Tony Petrarca

Tropical Storm Dorian

July 24th, 2013 at 6:48 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony Petrarca

The 4th named storm of the hurricane season has formed..Dorian.  It is far out at sea, actually closer to the coast of Africa than the United States, so many days to watch the developments.  By August and certainly September we start seeing more storms form in this part of the Atlantic near the Cape Verde Islands.  Storms like Dorian have a very long  journey across the Atlantic if they are to reach the United States. Many atmospheric variables come into play..some which favor a storm sustaining, others which cause them to weaken. Below is  a map which shows typical paths of storms born of the Cape Verde Islands…

500px-Cape_Verde_hurricane_track

 

 

 

 

 

 

Infact the great 1938 New England hurricane formed off the coast of Africa.   We will keep a close on on Dorian. The  5 days forecast maintains at least tropical storm strength as it approaches near Puerto Rico early next week as  minimal tropical storm.

ddorian

 

 

 

 

 

Dorain  5 Day Forecast Track

 


Severe Storms Saturday Will Break The Heat….

July 17th, 2013 at 12:37 am by under Tony's Pinpoint Weather Blog

Good Early Weds. Morning From Chief Meteorologist Tony Petrarca…

Looking ahead to Saturday….all the “ingredients” may come together to produce strong to severe thunderstorms.  The combination of heat, humidity, an approaching cold front and wind speeds increasing in the upper levels of the atmosphere (just to name a few), will help develop these storms later in the day…..stay tuned for updates. This strong cold front will break the heat wave, bringing relief on Sunday.

saturday

 Saturday Afternoon Forecast Map Shows Strong Cold Front


A 5-7 Day New England Heat Wave…

July 15th, 2013 at 6:54 pm by under Tony's Pinpoint Weather Blog

Good Evening from chief meteorologist Tony Petrarca…..

Its not just the heat, its the humidity too. In the winter we have the feel like temperature called the “Wind Chill”. In the Summer it’s called the “Heat Index”. The combination of the high humidity makes the already hot temperatures feel hotter. The heat index will be approaching over 100 degrees Tuesday in those areas shaded in pink…now  ALL locations will be hot Tuesday, but the most significant heat index values will be those areas shaded in pink on the map below.

One way our bodies cool off is by having the perspiration on our skin evaporating…the evaporation process removes heat and our body temperture cools. However when the humidity in the air is very high, it is more difficult for evaporation to occur and our body temperature does not cool…hence the heat index.

heat index

 

 

 

 

 

 


New England Tornadoes

July 11th, 2013 at 6:39 pm by under General Talk, Tony's Pinpoint Weather Blog

Good Evening from chief meteorologist Tony Petrarca

While tornadoes in New England are not a common occurance in terms of frequency. we certainly have a history.  As noted in Pete Mangione’s  previous blog, it was a confirmed Tornado just 25 miles from the Rhode Island border yesterday evening. I found some data on New England tornado locations and path lengths.  Red lines on the map below are past tracks of twisters. A few notable things to point out…1) The maximum frequency is across the Connecticutt River Valley And Central Massachusetts…..2) Notice the lack of activity near the coast.  Keep in mind, tornadoes form inside of severe thunderstorms…severe thunderstorms need very warm to hot air to maintain intensity. Many times on  a Summer Afternoon cool, ocean air will keep temperatures across the southern 1/3 of the state cooler, so thunderstorms tend to be weaker. That’s not to say the coast does not see violent thunder, but it is less frequent. 

 

 

 506px-New_England_tornado_paths[1]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

New England Tornado Tracks


Tornado Touches Down Over R.I. Border

July 10th, 2013 at 10:06 pm by under General Talk, Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony Petrarca….

Tornado touched down early the evening in northeast Connecticut.  As the tornadic thunderstorm approached northwest Rhode Island it diminished significantly. Below is a radar image of  the small, but strong storm over northeast Conn. Myself and meteorologist TJ DelSanto were concerned about this storm due to the “shape” of the radar signiture.  The subtle hook like shape is an indicator of some rotation within the storm. After the tornado warning was issued for northeast Conn., a picture of the tornado on our social media came in, showing the actual twister on the ground…and all of this just 20-25 miles away from the Rhode Island border! 

 

hook echo Click Here For Latest

 

 

torn storrs Ct

 

 

 

 

 

 

 

 

uuuuuu


Chantal Update

July 8th, 2013 at 6:49 pm by under Tony's Pinpoint Weather Blog

Good Evening….

Tropical Storm Chantal has not become better developed as of yet….however, over the next few days the storm is expected to get a bit stronger, followed by some weakening as it approaches the Bahamas by Saturday.  Storm is still far away, located about  390 miles east of Barbados.

What is interesting about this storm is the location and time of year it formed. We usually don’t see too many storms form in this part of the Atlantic in early July.  This may be a sign of things to come as far as the hurricane season as a whole which is expected to be very active.  Thanks for checking our blog…stay tuned for updates this week on future movements on Chantal……Tony Petrarca

chantal


Unsettled Weather Pattern (At Times)

June 26th, 2013 at 7:11 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony Petrarca…

When we refer to the weather “pattern” we are talking about a  certain kind of weather that sets up for several days to  several weeks.  The weather players  that are setting up in the atmosphere right now will maintain right thru next week. The map below shows the “Players”. One is an area of low pressure across the upper Mid-West and Great Lakes. The other is an area of High pressure offshore (sometimes called the Bermuda High). Both will be parked in place thru early next week. The wind flow around both systems is such that warm and humid air will be drawn into our area (its already here). This air is “unstable” meaning it has the ability to rise very easily.  Rising air creates showers and thunder. The faster the air rises, the more severe  a thunderstorm can be.  Now this doesn’t mean each day is going to be raining non-stop every hour. There will be “rain-free” stretches too….but, when it does rain, heavy downpours can happen. That is why a “Flash Flood Watch” has been issued for Thursday and Friday.

unsettled

 

 

 

 

 


RIVER UPDATES

June 14th, 2013 at 7:00 pm by under General Talk, Tony's Pinpoint Weather Blog

Good Evening from Chief Meteorologist Tony Petrarca….

My Latest Video Forecast Click Here

Even though the rain has ended an additional slight rise in water levels will continue to due runnoff. While most rivers will experience “minor” flooding, the Pawtuxet will range a  flood range as “Moderate” Tonight into Saturday. Stay tuned for updates

river update

 

 

THE FLOOD WARNING CONTINUES FOR
  THE BLACKSTONE RIVER AT WOONSOCKET.
* FROM THIS EVENING TO SATURDAY MORNING…OR UNTIL THE WARNING IS
  CANCELLED.
* AT  4:16 PM FRIDAY THE STAGE WAS 8.4 FEET.
* FLOOD STAGE IS 9.0 FEET.
* MINOR FLOODING IS FORECAST.
* FORECAST…THE RIVER WILL RISE ABOVE FLOOD STAGE BY TONIGHT AND
  CONTINUE TO RISE TO NEAR 9.1 FEET AFTER MIDNIGHT TONIGHT. THE
  RIVER WILL FALL BELOW FLOOD STAGE BY EARLY TOMORROW.
* IMPACT…AT 9.0 FEET…FLOODING MAY BEGIN TO AFFECT THE LOWER
  PARKING AREA TO THE ALBION MILL APARTMENTS. LOWER LYING
  RESIDENTIAL AREAS ALONG THE RHODE ISLAND AND MASSACHUSETTS
  LINE…INCLUDING THE LOWER LEVEL OF THE RIVER ISLAND CONDOMINIUMS
  IN WOONSOCKET…MAY BEGIN TO EXPERIENCE FLOODING. BUSINESSES ALONG
  THE RIVER SHOULD TAKE THE NECESSARY ACTIONS TO PROTECT PROPERTY.

 

THE FLOOD WARNING CONTINUES FOR
  THE PAWTUXET RIVER AT CRANSTON.
* UNTIL FURTHER NOTICE…OR UNTIL THE WARNING IS CANCELLED.
* AT  3:45 PM FRIDAY THE STAGE WAS 11.0 FEET.
* FLOOD STAGE IS 9.0 FEET.
* MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS FORECAST.
* FORECAST…THE RIVER WILL CONTINUE RISING TO NEAR 11.2 FEET
  AFTER MIDNIGHT TONIGHT THEN BEGIN FALLING ON SUNDAY BUT STILL
  REMAIN ABOVE FLOOD STAGE.
* IMPACT…AT 11.0 FEET…STRUCTURES AND HOMES ARE IMPACTED IN LOW
  LYING SECTIONS OF WARWICK.  AFFECTED AREAS INCLUDE HOMES AND
  BUSINESSES ON WELLINGTON AVENUE AND AVERY ROAD IN CRANSTON…AS
  WELL AS PIONEER AVENUE…BELLOWS STREET…VENTURI AVENUE AND A
  PORTION OF RIVER STREET IN WARWICK.

 

 

 

 

 


Pawtuxet River History

June 13th, 2013 at 9:32 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meterologist  Tony Petrarca

With more rain Tonight, rivers and streams continue to rise. However any flooding is expected to be minor to boderline moderate. Ofcourse, there will always be comparisons to the historic floods of 2010. This current flood threat is no where close to being a repeat of 2010. In this current situation, the forecast for the Pawtuxet is 1-2 feet above floodstage.  Back in 2010 it was a staggering 12 feet above flood stage, making it one of the worst floods in 100 years. Bottomline, history will not repeat itself. Nonetheless even minor flooding is still too much water .  Low lying residents along the Pawtuxet, Pawcatuck and other rivers should monitor weather forecasts next 24 hours.

riversn

 


Another Rainstorm On The Way…

June 12th, 2013 at 4:54 pm by under Tony's Pinpoint Weather Blog

Good Afternoon/Evening ….

This incredible wet June weather pattern continues. Storm system on Thursday will bring widespread heavy rain, starting Thursday afternoon and night. It will taper to lighter showers by Friday morning  (Weekend will be nice).  Ofcourse the ground remains very saturated from all the rain since last Friday. Rivers remain high too. Expecting rainfall totals with this next storm to range from  1 to 3″ by Friday morning. This will more than likely create some street and urban flooding in those areas with “poor drainage”  Moderate flooding will occur on some rivers by late Thursday Night iinto Friday morning. A Flood Watch has been issued again starting Thursday afternoon.

Below is a rain total forecast from one of our high resolution models called the RPM.  It is indicating 1-3″ of rain. Based on data we have been looking at here in the Pinpoint Weather Center, we agree with this model output.

 

RPM qpf2km

Stay tuned for updates over the next few days. Thanks for logging  on to wpri.com  weather blog

Chief Meteorologist Tony Petrarca

 


Minor Flooding Continues On Pawtuxet and Pawcatuck Rivers…

June 11th, 2013 at 8:25 pm by under Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony Petrarca

Latest numbers on Rivers….

Pawcatuck River is at 7.8 ft….that’s about  8inches above flood stage. A slow rise will contine overnight.

Pawtuxet Rver is at 10.46 ft.   That is 1.5 feet above flood stage which is minor  to boderline  moderate flooding. A slow rise to 11 feet expected overnight, then slowly receeding Wednesday

The problem….more rain expected Thursday PM into Friday morning.


Still Need To Monitor Rivers And Streams Thu Tuesday…

June 10th, 2013 at 6:28 pm by under General Talk, Tony's Pinpoint Weather Blog

Good Evening From Chief Meteorologist Tony R Petrarca….

More rain moving in next 24 hours. Not as much as Friday’s storm, we are expecting 1-2 inches. That in itself is not extreme, however the ground  is still saturated and rivers still swollen from Friday’s rain.  Keeping an eye on all rivers like the Pawcatuck, Pocassett, Pawtuxet and Blackstone to name a few. At this point the only River Flood Warning in effect is the Pawtuxet. That river expected to go 1-2 feet above flood stage which is minor to moderate (see graph below). At this point the Blackstone expected to swell but stay below flood. Pawcatuck is near flood stage now (7 feet) and minor flooding is likely. If we get more than  the 1-2 inches of rain we are currently forecasting, then  a more significant flooding will occur on these rivers. Stay tuned…

river 2_hg

 


New Rainfall Totals Since Friday Morning…

June 7th, 2013 at 11:59 pm by under General Talk, Tony's Pinpoint Weather Blog

From Chief Meteorologist Tony Petrarca….as of 11:56pm Friday, up to 3-6 inches of rain has fallen creating flooding problems across the region. Rain will continue overnight with still the risk of flash flooding. Rain ends by 8am Saturday. Local rivers and stream will still need to be monitored thru Saturday Morning

New rain


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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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