Tony Petrarca

FLOOD WARNING NOW IN EFFECT

June 7th, 2013 at 6:56 pm by under Tony's Pinpoint Weather Blog

Good Evening from Chief Meteorologist Tony R Petrarca..

Flood Warning has just been issued…Very heavy rain next several hours will lead to poor drainage and urban flooding in some areas. Also local rivers and streams will need to be watched. The map below shows how much rain has fallen so far since 6pm, but more is on the way.

Final totals will range from 2-4 inches by 7am Saturday. Stay tuned to Eyewitness News for updates

 rain amounts


Minor Flooding Possible Along Pawtuxet River Late Tonight

June 7th, 2013 at 2:48 pm by under General Talk, Tony's Pinpoint Weather Blog

Good Afternoon from Chief Meteorologist Tony Petrarca……

As of 1:45pm Today the Pawtuxet is well BELOW flood stage. However, with 2-4 inches of rain expected, minor flooding is possible after midnight Tonight into Saturday morning on the river. The graph below shows a forcecast rise of 1 foot above flood stage overnight.

Stay tuned for updates. Smaller rivers and streams of a slightly higher chance of flooding overnight.

 crar1_hg

 

 

 

 

 

 

 

 

 

 

 

 

Meanwhile the Blackstone River in Woonsocket will rise close to 8 feet by dawn Saturday, That is 1 foot below flood stage, so this river will need to be monitored closely should rainfall totals be higher tahn expected.

woor1_hg


Midnight Andrea Update

June 7th, 2013 at 12:14 am by under General Talk, Tony's Pinpoint Weather Blog

Good early Friday morning from Chief Meteorologist Tony Petrarca…

I just finished looking at new data.  A storm like last year’s Sandy is highly unlikely. However, some significant weather in the form of  heavy rain and some gusty winds are  likely…

Here is the lastest track forecast…storm makes its closest approach to our coast between 5-8am Saturday. It will not be a Tropical Storm at that time, even though gale force winds are likely on the south shore.

new track

 

This track will produce rainfall totals of 2-4″ from Friday morning thru Friday Night. The heaviest rain will  fall Friday Afternoon into Friday Night, ending early Saturday morning.  Street and urban flooding “possible” later Friday Afternoon/Night. We will need to monitor local rivers and streams.

While the storm is not expected to bring severe wind….some gale force winds of 35-45 mph in gusts, likely late Friday night along the south shore and islands. The time frame with this is roughly 12am -6am Saturday. The map below is a forecast of wind gusts late Friday Night….The good news is that the storm will race away Saturday morning with some developing sunshine. Despite a brief passing shower, most of Satuday looks rainfree after 8am. Sunday looks even better.  Stay tuned for updates. The exact track of the storm will determine rainfall amounts. Allow extra travel time…especially the Friday evening commute.   Tony Petrarca, updated 12:21am Friday

wind gusts

 

 

 


FLOOD WATCH FRIDAY AFTERNOON INTO SATURDAY A.M.

June 6th, 2013 at 4:15 pm by under General Talk, Tony's Pinpoint Weather Blog

Good afternoon from Chief Meteorologist Tony Petrarca….

Remanants from Tropical storm Andrea will approach Friday Afternoon/Night, then moving away later Saturday morning. High winds will not be a factor, however some gale force gusts along the south shore (especially lower Cape and Islands) up to 35-45 mph. Wide spread heavy rain likely…the  exact track of storm will determine final rainfall amounts. At this point a 2-4″ rain fall id forecasted and the reason why a Flood Watch has been issued. Stay tuned for updates on Eyewitness News Live at 10pm and 11pm

OVERVIEW:

RAINFALL: 2-4″  Potential flooding of some low lying streets, small streams. Big rivers need to be monitired, but at this point, the Pawtuxet and Blackstone will rise, but stay below flood stage.

WIND POTENTIAL : Not as big  factor, however late Friday night, winds will gust up to 40 mph along the south shore

COASTAL FLOODING:  Not a big factor. Slight chance of minor coastal flooding on south shore.

Below is computer model guidance on the location and amounts of rain…The heaviest from Fri. Afternoon thru late Fri. Night

Click Here For Our Interactive Hurricane Tracking Site

Andrea_rainfall

 

 


First Storm Of Hurricane Season Forms, Will Bring Rain Here

June 5th, 2013 at 6:46 pm by under General Talk, Tony's Pinpoint Weather Blog

 

Good Evening From Chief Meteorologist Tony Petrarca…

Hurricane season off to a fast start as a weak tropical storm Andrea has formed in the Gulf Of Mexico. While the storm is not expected to be a big player as far as winds…it will be a big rain producer. Remnants from the storm will move into our area as early as Friday bring periods of heavy rain thru early Saturday morning. Potential for 2-4″ of rain from Friday into early Saturday morning. Will need to monitor for the possiblity of minor urban and small river flooding…Meanwhile you can check out our Hurricane Tracker Site

The following is from the National Hurricane Center:  The immediate threat is for the Gulf and Florida

…TROPICAL STORM WARNING ISSUED FOR PARTS OF THE FLORIDA WEST
COAST…

SUMMARY OF 600 PM EDT…2200 UTC…INFORMATION
———————————————-
LOCATION…25.3N 86.5W
ABOUT 310 MI…500 KM SW OF TAMPA FLORIDA
ABOUT 320 MI…510 KM SSW OF APALACHICOLA FLORIDA
MAXIMUM SUSTAINED WINDS…40 MPH…65 KM/H
PRESENT MOVEMENT…N OR 360 DEGREES AT 3 MPH…6 KM/H
MINIMUM CENTRAL PRESSURE…1002 MB…29.59 INCHES

WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY…

A TROPICAL STORM WARNING HAS BEEN ISSUED FOR THE WEST COAST OF
FLORIDA FROM BOCA GRANDE TO OCHLOCKONEE RIVER.

A TROPICAL STORM WATCH HAS BEEN ISSUED FOR THE U.S. EAST COAST FROM
FLAGLER BEACH FLORIDA TO SURF CITY NORTH CAROLINA.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT…

A TROPICAL STORM WARNING IS IN EFFECT FOR…
* THE WEST COAST OF FLORIDA FROM BOCA GRANDE TO OCHLOCKNEE RIVER

A TROPICAL STORM WATCH IS IN EFFECT FOR…
* FLAGLER BEACH FLORIDA TO SURF CITY NORTH CAROLINA

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA…GENERALLY WITHIN 48 HOURS.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA…INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS…PLEASE MONITOR PRODUCTS ISSUED BY
YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE.

DISCUSSION AND 48-HOUR OUTLOOK
——————————
AT 600 PM EDT…2200 UTC…THE CENTER OF TROPICAL STORM ANDREA WAS
LOCATED NEAR LATITUDE 25.3 NORTH…LONGITUDE 86.5 WEST. ANDREA IS
MOVING TOWARD THE NORTH NEAR 3 MPH…6 KM/H. A NORTHEASTWARD MOTION
AT A FASTER FORWARD SPEED IS EXPECTED ON THURDAY AND THAT GENERAL
MOTION SHOULD CONTINUE THROUGH FRIDAY.  THE CENTER OF ANDREA
IS FORECAST TO REACH THE COAST OF THE FLORIDA BIG BEND ON
THURSDAY AFTERNOON OR EVENING…AND MOVE OVER SOUTHEASTERN GEORGIA
AND EASTERN SOUTH CAROLINA THURSDAY NIGHT AND FRIDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH…65 KM/H…WITH HIGHER
GUSTS.  LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 48
HOURS.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES…
220 KM…MAINLY TO THE EAST AND SOUTHEAST OF THE CENTER.

THE ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON RECONNAISSANCE
AIRCRAFT DATA IS 1002 MB…29.59 INCHES.

HAZARDS AFFECTING LAND
———————-
WIND…TROPICAL STORM CONDITIONS ARE EXPECTED TO FIRST REACH THE
GULF COAST WITHIN THE WARNING AREA BY THURSDAY AFTERNOON…MAKING OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS.

STORM SURGE…THE COMBINATION OF A STORM SURGE AND THE TIDE WILL
CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE FLOODED BY RISING
WATERS.  THE WATER COULD REACH THE FOLLOWING HEIGHTS ABOVE GROUND
IF THE PEAK SURGE OCCURS AT THE TIME OF HIGH TIDE…

TAMPA BAY NORTHWARD TO APALACHICOLA…2 TO 4 FT
FLORIDA WEST COAST SOUTH OF TAMPA BAY…1 TO 2 FT

THE DEEPEST WATER WILL OCCUR ALONG THE IMMEDIATE COAST NEAR AND TO
THE SOUTH OF THE LANDFALL LOCATION. SURGE-RELATED FLOODING DEPENDS
ON THE RELATIVE TIMING OF THE SURGE AND THE TIDAL CYCLE…AND CAN
VARY GREATLY OVER SHORT DISTANCES.  FOR INFORMATION SPECIFIC TO
YOUR AREA…PLEASE SEE PRODUCTS ISSUED BY YOUR LOCAL NATIONAL
WEATHER SERVICE OFFICE.

RAINFALL…ANDREA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF
3 TO 6 INCHES OVER MUCH OF THE FLORIDA PENINSULA…EASTERN PARTS OF
THE FLORIDA PANHANDLE…AND SOUTHEASTERN GEORGIA…WITH ISOLATED
MAXIMUM AMOUNTS OF 8 INCHES POSSIBLE.  TOTAL RAIN ACCUMULATIONS OF
2 TO 4 INCHES ARE ALSO EXPECTED OVER EASTERN SOUTH CAROLINA AND
EASTERN NORTH CAROLINA.

TORNADOES…ISOLATED TORNADOES ARE POSSIBLE OVER THE FLORIDA
PENINSULA LATE TONIGHT THROUGH THURSDAY.

 

 

 

Trp Storm

 


Slight Risk Of Severe Storms This Evening

May 29th, 2013 at 5:44 am by under General Talk, Tony's Pinpoint Weather Blog

image

Good Morning from Chief Meteorologist Tony Petrarca…. ingredients may come together by late afternoon or early evening for thunderstorms… some which will be locally severe. The risk of damaging winds and hail for the areas shaded in yellow. Time frame is 6pm to 10pm Today. Stay tuned for updates via wpri.com and twitter.


The Bermuda High

May 28th, 2013 at 11:14 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony Petrarca….

Are you ready for some heat and humidty. One weather feature  we monitor during the summer is high pressure that is sprawled across the Atlantic ocean. This semi-permanent weather  system will sometimes set up  over Bermuda. The circulation around  high pressure is clock wise. In this position  (over Bermuda), the high pressure cell circulates very warm humid air from the Gulf Of Mexico and the Bahamas and draws it north  into New England…This will be the  set up starting this Thursday and extending into this weekend.  It should be noted that the position and strength of this high pressure system determines future movement of Atlantic hurricanes along the east coast. Hurricane season starts June 1st, but the peak season is usually during August and September…

Bermuda High


Memorial Day Weekend Snow !!??

May 24th, 2013 at 9:30 pm by under General Talk, Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca

Hmmm….I thought that headline would get your attention, but yes, it will happen. HOWEVER, I am refering to the the high mountains of northern New England.  The map below is one of our high resolution computer models called the RPM.  It  shows small accumulations in the Green and White Mountains of Vermont and New Hampshire, as well as far Northern Maine. It would not surprise me to see some wet snow mixing with cold rain Saturday Night in the Berkshires of western Masssachusetts.  For most of us its a cold rain Saturday.

RPM Snowfall Accumulation Forecast Saturday Night Into Sunday Morning…

rpm snowfall


3-D Doppler Radar Technology…What We Use.

May 22nd, 2013 at 12:48 am by under Tony's Pinpoint Weather Blog

Good Morning…actually very early morning (12:18am)…

Still analyzing the data from the Moore Oklahoma Tornado. The doppler radar technology we use in our weather department is state of the art when it comes to tracking severe weather.  One feature we use is called “X Vision”, in which we can take cross sections of severe thunderstorms and look inside of them in real time. Keep in mind, tornadoes form inside of severe thunderstorms only. Looking inside of these huge storms gives us a wealth of information about the inner structure of the storm, and clues us in on things like hail, tornado, and wind (microbursts) potential. This in turn allows us to give you specific and advanced warnings of dangerous weather headed your way. Stay tuned to Eyewitness News during severe thunderstorm season to see how we use “X-Vision” technology.

The image below is a dramtic 3D look at the Moore Oklahoma thunderstorm and tornado. You can clearly see the funnel touching theX Vision Moore OK Tornado ground just outside of Moore.  Other clues are the hieght of the storm (50, 000 feet !!)..along with the location of large hail.

 Thanks for logging on….Tony R Petrarca

 


Massive Oklahoma Tornado

May 21st, 2013 at 12:07 am by under Tony's Pinpoint Weather Blog

From Chief Meteorologist Tony Petrarca..

The pictures from Moore Oklahoma are heartbreaking…the damage, incredible, even for Oklahoma, which is no stranger to tornadoes.

The strength, size and duration of this particular tornado is rare. Tornado stength is measured using the Fujita Scale.  Twisters are ranked on a scale from Zero to Five. A zero is the weakest, a five is considered catastrophic. Yesterday’s Moore Oklahoma tornado is estimated to be a 4 or 5 on that scale.  That puts winds up to 200mph or higher. Whole cars are lifted and thrown hundreds of feet.

Latest News On Severe Outbreak Click Here

F4 Damage Moore OK

Damage From More Oklahoma, May 20th, 2013

 

THE FUJITA TORNADO SCALE

fujita F5

 

 SEVERE WEATHER OUTLOOK FOR TUESDAY, MAY 21st, 2013….

SEVERE RISK AREAS IN YELLOW AND RED, GREEN SHADING REPRESENTS GENERAL THUNDERSTORMS WHICH MAY BE STRONG BUT NOT SEVERE

 day2otlk_1730


More Severe Weather For Plains…

May 20th, 2013 at 3:28 pm by under Tony's Pinpoint Weather Blog

 

RISK POTENTIAL TODAY….

Good Evening …

After a slow start. tornado season continues to become more active last several days. As of this writing a Tornado Warning has been issued for Oklahoma City.  This large weather sysytem will affect our weather next several days, but nothing severe…however, this risk of occasional showers and thuderstorms is expe this week. Many hours however will be rain free too, so not a washout.  This storm across the Plains is helping to draw in high humidity across our area….that in turn will produce dense fog along our south coast Tonight. A Dense Fog Advisory has been issues for the coast from 10pm Tonight thru 10am Tuesday..

Thanks for logging on…….Tony Petrarca

 

 

day1otlk_1630


Funnel Cloud And Tornadoes

May 10th, 2013 at 11:17 pm by under Tony's Pinpoint Weather Blog

Good Evening ….

A busy weather day this past Thursday with confirmed Tornado in Stoughton, Mass and a funnel cloud in North Smithfield RI.  What is the difference?  A funnel cloud is a rotating vortex of air that is suspended above the ground, but never makes contact.  The photo below is an archive picture from the Midwest and not the North Smithfield funnel…..If the funnel cloud makes contact with the ground, it  is then classified as a Tornado.

Funnel cloud

 

 

 

Here  is a link to the video of the North Smithfield funnel cloud….Its difficult to tell if the funnel makes contact with the ground or not…If it did, it was just for a few seconds.   What do you think….does the funnel make contact with the ground?

http://www.wpri.com/dpp/news/local_news/blackstone/funnel-cloud-forms-near-n-smithfield

Below is an archive picture of a tornado…clearly here, the funnel cloud is touching the ground

tornado

 

Here is the video link of the actual  tornado in Stoughton Mass. Watch closely and you can see the swirling column of air (estimated at 60-86 mph) hitting the ground.

http://www.wpri.com/dpp/news/local_news/se_mass/tornado-touches-down-in-stoughton

Thanks for logging On !    Chief Meteorologist Tony Petrarca

 


One more warm dry day…

May 6th, 2013 at 6:45 pm by under Tony's Pinpoint Weather Blog

Good evening ….

The streak of dry sunny weather will come to an end by mid week.  That is actually good news considering how dry it has been.  We have been abnormally dry of late.  Infact, since March 1st rainfall is running 5 inches below average.

After some clouds and morning fog Tuesday, sunshine will warm things up nicely by afternoon. The forecast map below are the high temperatures by 3pm. Inland areas around 70-75 with the coast in the mid to upper 60s due to light sea breeze.

ttemps_n

 

Rain arrives by Wednesday…Thanks for logging on !!    Tony Petrarca

 

 


Seasonable Temperatures, Not Much Rain

April 29th, 2013 at 6:44 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony Petrarca…

Weather pattern that we are in will continue to feature mostly dry air along with near normal temperatures. Rainfall for the month of April is running around 2.55″ below average. Widespread rainfall is not in the forecast next 5-7 days. Notice the forecast high temperatures for Tuesday, mid and upper 60s inland.  Slight sea breezes this week will keep the shores a bit cooler.   Thanks for logging on to wpri.com.  Have a nice evening !

Tony Petrarca

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Pinpoint Weather Team On Twitter

 

5Tony

 

 


Major Improvements Weds. Afternoon…

April 23rd, 2013 at 6:51 pm by under Tony's Pinpoint Weather Blog

 

Good Evening  from chief meteorologist Tony Petrarca…..

Certainly not feeling like late April, almost May Today.  Temperatures stayed in 40s all day. Normal high temperature this time of year is around 63.  Today’s chilly air did not come from Canada, but rather of the cold Atlantic waters. No surprise this time year to have the water still cold.  But even though the ocean is cold, the late April sun is strong enough to warm things up nicely….the key in getting the warmth is not only having the sun out (obviously), but also a wind that comes in off the land (example: west or northwest breeze), rather than the water.

Look at the forecast map below.  See what afternoon sun and a  land breeze for most of the day can do….Highs Wednesday Afternoon recover 65-70…that almost 25 degrees warmer than Today!   A late day sea breeze will knock the temperatures back down along south shore…regardless a much milder day on the way…enjoy.

warmup

 

 


Showers Tonight Into Early Saturday Morning…

April 19th, 2013 at 6:05 pm by under Tony's Pinpoint Weather Blog

 

Good Evening From Chief Meteorologist Tony Petrarca..

I am tracking an approaching cold front which has produced a few showers early this evening. The trend will be for “off and on” showers early Tonight, followed by a steady rain and even some thunder after midnight.  Some slow improvements Saturday.  My forecast map below shows rain (areas of green) extending into early Saturday morning. However, as the cold front sweeps offshore, rain should end from west to east by 10am.  The sun returns by late morning, and especially by afternoon. Bottom line, 2nd half of Saturday looks better than the 1st half

Saturday AM


Gusty South Winds Friday…

April 18th, 2013 at 6:54 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca….

Gusty South winds on Friday will bring in milder and humid air…however, notice on our forecast map below, the warmest air will be found well inland, away from south shore. A south wind means the air will be coming in from the chilly Atlantic waters, so the south shore will be 10 degrees cooler, but northern suburbs stay mild with less ocean influence.

Also with higher humidity levels moving in Friday, some areas of fog is likely early. Expecting occasional light showers or sprinkles, but the day as a whole does not looks like a washout. The more widespread heavier rain will arrive later Friday Night into Saturday morning..

temps


Milder Temperatures This Week…

April 15th, 2013 at 6:02 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca….

Mildest air this week will be found inland, away from the south shore.  High temperatures Tuesday will reach the lower 60s  away from the ocean.  A south wind will keep the immediate shoreline in 50s.  Even milder air Wednesday as temperatures climb to 65-70.

Tuesday

 


Warm Sun, Green Thumb !

April 8th, 2013 at 6:54 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca...

With the weather warming up in the coming weeks,its time to start thinking about planting.  Below are average dates for planting in our area.  The average date of our last frost around here is  April 26. Despite milder afternoons, you can still get chilly temperatures late at night and near dawn this time of year.

When determining the best planting dates in the spring for seeds, the date of the last spring frost is important to your success. Other factors can also influence planting dates, including soil temperature, altitude and slope of land, nearby waters, and day length.

 

Crop Start Seeds Indoors Start Seeds in the Ground
Beans Apr 16-30
Beets Mar 26-May 7
Broccoli Feb 18-Mar 4 Mar 26-Apr 2
Brussels sprouts Feb 18-Mar 4
Cabbage Feb 18-Mar 4 Apr 9-23
Carrots Mar 12-26
Cauliflower Feb 18-Mar 4 Apr 9-23
Celery Feb 18-Mar 4
Corn Apr 30-May 7
Cucumbers Mar 19-Apr 2 Apr 23-30
Lettuce Mar 4-19 Apr 9-30
Melons Mar 19-Apr 2 Apr 30-May 7
Onion sets Mar 19-26
Parsnips Mar 26-Apr 16
Peas Mar 4-19
Peppers Feb 18-Mar 4
Potato tubers Apr 16-30
Pumpkins Mar 19-Apr 2 Apr 23-30
Radishes Apr 9-23
Spinach Mar 4-19
Squash, summer Mar 19-Apr 2 Apr 23-30
Squash, winter Mar 19-Apr 2 Apr 23-30
Tomatoes Feb 18-Mar 4

Warm Sun, Cold Ocean…

April 4th, 2013 at 6:33 pm by under Tony's Pinpoint Weather Blog

Good Evening from Chief Meteorologist Tony Petrarca…

Now that we are in April, the angle of the sun is getting higher, so its ability to warm the air is greater. However, we cant ignore the fact that we are surrounded by ocean that is still chilly, only 42 degrees.  Any component of wind coming in off the ocean (sea breeze) will offset the sun’s warming potential. Today was a good example of that with places like Newport almost 10 degrees cooler than places like Smithfield And Providence.

highs

 

 

 

 

 

 

 

 

 

 

 

 

 

High Temperatures This Afternoon

sea breeze

 

 

 

 

Cool Marine Air In Blue Covers Southern 1/3 of Area Today


Watching Friday…..

April 3rd, 2013 at 6:43 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist  Tony Petrarca….

Watching an offshore storm Friday which will graze our area with some rain…especially along the shore. Latest data shows this storm trending further offshore with less of an impact, just some rain showers. If the trend continues further out to sea, we would miss the rain all together. At this point, I am going to keep showers in the forecast. One of our more reliable computer models (RPM) shows the rain (in green) just clipping us Friday afternoon.  This does not look like a major impact storm with excessive rain or wind….

friday

 

 

 

 


Welcome to April…

April 1st, 2013 at 6:23 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca…

April in Southern New England can be a real “rollercoaster” ride with significant weather changes from day to day. Infact Today was a good example..in Providnce it was sunny and 60 at 2pm this afternoon, then 3 hours later the temperature dropped 15 degrees with rain.  April is a transition month from Winter to Spring, so it can be notorious for having warm temperatures one day, then much colder weather a few days later, only to get warmer several days later…

Below are some interesting weather charts which depict what an average April is like…

clip_image002

 

 

 

 

Temperature

The month of April is characterized by rapidly rising daily high temperatures, with daily highs increasing from 53°F to 63°F over the course of the month, exceeding 73°F or dropping below 43°F only one day in ten.

 

Snow

The likelihood of snow falling is highest around April 1, occurring in 12% of days

clip_image002

 

 

 

 

 

 

The Days Are Getting Longer….I Love It !!

The earliest sunrise is at 5:43am on April 30; the latest sunset is at 7:43pm on April 30; the latest sunrise is at 6:28am on April 1; the earliest sunset is at 7:12pm on April 1.

Over the course of April, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:17 hours, implying an average day-over-day increase of 2.6 minutes.

The shortest day of the month is April 1 with 12:43 hours of daylight; the longest day is April 30 with 14:00 hours of daylight.

 

 


It’s All About “Source Region”…

March 27th, 2013 at 6:53 pm by under Tony's Pinpoint Weather Blog

warm sourcenGood Evening From Chief Meteorologist Tony Petrarca..

When predicting temperatures one simple thing we look at is “Source Region”. Where is the air coming from…. what is the source?  Air that moves thru  our area can originate from Canada, Gulf Of Mexico, The Atlantic, Southern Plains, ect.  Of  late, our air masses have been moving in  from Canada, resulting in temperatures that have been averaging below normal….To get milder air, we need more of an air flow from the Southern Plains and or Gulf Of Mexico. A large scale southwest wind would draw upon milder air from this source region. The weather pattern of late has not favored any air masses from the south moving in.  However, a slight moderation in temperature is expected this weekend, BUT, the air from Canada will move back in by next week, bringing cool days and cold nights.

Canadian Snowpack

 

 

 

 

 


Snow Cover Now Compared To Laast

March 26th, 2013 at 6:17 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca…

An interesting comparison on the snow cover on the ground right now (almost 47% of the U.S.) compared to this time last year…wow! Look at the bare ground in 2012.  Not much snow last Winter, and Spring came early in 2012. Infact the ice had already melted on New Hampshire’s largest lake, Winnipesaukee,  one of the earliest ice melts there in 100 years last year. That lake is still covered in ice right now

Cover lastyear

 

 

 

cover1

 

 

 


Snow Thursday Evening..

March 21st, 2013 at 12:32 am by under Tony's Pinpoint Weather Blog

Good morning from Chief Meteorologist Tony R Petrarca:

The map below shows our weather set up for a narrow band of snow Thursday Evening/Night. While the 2nd map below this text may look confusing, I will walk you thru what we are analyzing and make it simple.     So….here we go with weather lesson 101:

This map is a “streamline” map. It shows how the air near the surface is flowing and in what direction.  Notice how the air flow converges into one narrow zone over Southern New England. The red dot represents Providence. The zone or axis of where the air meets or collides is called a “NorLun Trough”  (the “Lun” in that word is short for Lundestedt, the last name of my roommate in weather school who actually coined this word many years ago)

Converging air is forced to rise….the faster moist air rises in the atmosphere, the more conducive it is in creating rain, or in this case snow. Here is the tricky part. Usually with Norlun situations, the zone of snow is very narrow in width. The exact location and duration of this weather feature will determine how much snow will fall. I have seen NorLun cases where one town may get 6″ of snow while a town only 10-15 miles away gets only a dusting.  The likely zone of snow from this on Thursday evening will be south  and east of Providence and especially across Southeast Massachusetts.

The other map below is an early call on snow fall accumulations Thursday Night….keep in mind how difficult pinpointing the exact location of the narrow snow band, so stay tuned to forecasts. The snowfall rates may be heavy, but at the same times localized in nature, covering only a small area.

THu snow

 

 

norlun 3


Winter Hangs On….

March 18th, 2013 at 6:41 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca…

I am tracking a developing storm near the Mid Atlantic Coast at this hour…it will bring snow sleet and rain next 12-18 hours. The atmosphere is plenty cold enough for all snow later this evening and overnight, however, slightly milder air will be drawn in by Tuesday morning and that will result in a transition over to sleet and then “plain rain”, first in our southern suburbs, several hours later northern Rhode Island. Before the transition to sleet and rain, snow will accumulate to 1-2″ along the shore….2-4″ inland including, Warwick, Cranston and the Providence Metro area. North and west of Providence (especially NW of Route 295), 4 to 6 inches of snow is expected by late Tuesday morning.

snow tredn

This messy weather will have a high impact on the Tuesday morning commute, especially inland areas. Allow for some extra travel time. There may be cancellations and/or delays in those areas that see mostly snow rather than rain. Precipitation will switch back briefly to snow Tuesday evening in northern suburbs before ending.


Additional Snow Wind Tonight

March 7th, 2013 at 7:23 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony Petrarca

After some small accumulations this morning, round two of snow has kicked in for tonight thru Friday morning. As of this writing, Cumberland has 2-3″ of snow with up to 7″ of snow being reported in Foxboro and Mansfield Mass. and Norton Mass. already has 8″ on the ground. Large ocean storm is semi stalled off our coast. However the large circulation around it continues to draw in Atlantic Moisture into the area. Also a separate weather system is approaching from the west. The net result will be additional snow Tonight. Now that temperatures have cooled, there is a better chance of the snow sticking and accumulating. The higher totals will be found across interior southeastern Massachusetts (Taunton, Attleboro, Mansfield, Foxboro)  where several inches has  fallen already. In the Providence metro area, including northern RI we are expecting amounts that can range anywhere from only 5″ to  close to 9″.   Right now I am favoring a round 5-6″ in that zone. Further south and east of Providence (Kent County, Washington County) around 3-5″ of snow.

Below is a link of what has fallen already since this morning….some of these morning amounts melted by this afternoon…take note of when observations were taken

Snow Reports So Far

Amounts Include What Fell Since This Morning

 

 

 

 


Storm Update….

March 6th, 2013 at 12:16 am by under Tony's Pinpoint Weather Blog

Good Evening…Actually Good Morning, From Chief Meteorologist Tony Petrarca:

Even with the storm 18 hours away, our computer guidance is still not in complete agreement. Infact I am looking at multiple sets of new data that suggests anywhere from 1 to 20 inches of snow.  So where do we go from here?   Additional data will come in during the overnight from 1am thru 5am…I would suggest checking back on Eyewitness News starting at 430am.

The bulk of any accumulating wet snow will fall Wednesday night into Thursday morning.

The peak for strong wind gusts will occur Weds Night Into Thursday with gust of 45-55 mph along the shore. Minor coastal flooding is possible along the Rhode Island south shore during multiple high tide cycles next 48 hours…however, the more significant coastal flood threat and erosion will  be along “east facing”  shores of Massachusetts from Boston thru Cape And Islands.

Below is the snowfall accumulation forecast with amounts by Thursday Afternoon. Again, with such a complex weather set up, I recommend checking back to to see if these numbers need to be adjusted. Meanwhile any travel both Wednesday morning and afternoon should not be a problem. Things will deteriorate by Weds evening into Thursday.

Watch Latest Video Forecast Click Here

 

 

 

Snow Amounts By Thursday Noon


Nor’easter Weds Into Thursday

March 5th, 2013 at 12:23 am by under Tony's Pinpoint Weather Blog

Good morning from chief Meteorologist Tony R Petrarca

What is so challenging with this upcoming storm is the huge variability in both precipitation type and amounts. Where it rains, it will be a lot of rain 1.5 to 3″ of rain….and where it stays mostly snow, 6-12″ of snow is possible. All of this may occur over a very short distance. Bottom line, the weather for example in Newport and Narragansett will be vastly different then Pascoag,  Foster Gloucester. For some its a snow storm, for others, a rain and wind storm….the coast will deal with flooding during high tide cycles…..Also with the heavy rains, rivers will need to be monitored. Needless to say, a very challenging forecast.  My advice…check back for updates (tweets too) during Tuesday.  Its almost 12:30 am….going to get some shut eye…talk again soon…..Tony

Best chances for snow vs rain

 


Slow Moving Ocean Storm Late Weds. Into Friday Morning.

March 4th, 2013 at 6:41 pm by under Tony's Pinpoint Weather Blog

Good Evening from Chief Meteorologist Tony R Petrarca…

Large and slow moving coastal storm will form off the Mid Atlantic coast Wednesday evening  and extend Thursday into early Friday. The storm will bring a wide variety of weather, including wet snow (for some locations) sleet, rain, strong winds (especially near coast), beach erosion, large waves and surf, along with some coastal flooding during multiple high tide cycles. Still some uncertainty with the amounts and type of precipitation, so check back for updates. Again, impacts are likely, especially for coastal areas, but the magnitude is still in question.  At this point the highest chances for any wet accumulating snow would be in the higher elevations of northwest Rhode Island, Northeast, Conn., Worcester, and Berkshires. Elsewhere it would be a cold rain sleet mix along with gusty winds. Keep in mind that a shift in storm track could make the wet snow impact more pronounced in the Providence metro area.

Below is forecast of storm location south of New England by Thursday morning. Since it is slow moving, a long duration fetch of east and northeast winds will bring in moisture off the ocean (rain snow sleet) as well as maintain waves and offshore swells which will head towards our coastline:

Offshore Storm Thursday Morning