Increasing cyclonic flow aloft, a shortwave rotating through the upper level trough and a cold front moving across the Southern New England region created enough instability and lift to produce isolated thunderstorms across northern Connecticut. One of these storms produced severe thunderstorm winds that resulted in tree damage in Hartford, Connecticut.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOX wrote it up.
Increasing cyclonic flow aloft, a shortwave rotating through the upper level trough and a cold front moving across the Southern New England region created enough instability and lift to produce isolated thunderstorms across northern Connecticut. One of these storms produced severe thunderstorm winds that resulted in tree damage in Hartford, Connecticut.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boston/Norton, MA wrote its last area forecast discussion before the first event at Aug 21, 2:01 PM EST, 51 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAUNTON MA
301 PM EDT SUN AUG 21 2011
.SYNOPSIS...
A COLD FRONT APPROACHES FROM THE GREAT LAKES LATER TODAY AND
CROSSES NEW ENGLAND LATE TONIGHT...BRINGING SHOWERS AND
THUNDERSTORMS. HIGH PRESSURE FROM THE NORTHERN PLAINS THEN MOVES
IN WITH DRY WEATHER THROUGH MIDWEEK. ANOTHER FRONT MAY APPROACH
LATE IN THE WEEK WITH THE CHANCE OF MORE UNSETTLED WEATHER.
&&
.NEAR TERM /UNTIL 10 PM THIS EVENING/...
***A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTHERN
CONNECTICUT...WESTERN MASSACHUSETTS FROM WORCESTER COUNTY WEST
AND SOUTHERN NEW HAMPSHIRE***
2 PM UPDATE...RADAR SHOWS A LINE OF THUNDERSTORMS STRETCHING FROM
THE U.S./CANADA BORDER SOUTHWARD THROUGH VERMONT AND INTO THE
BERKSHIRES AND POINTS SOUTH. THESE STORMS ARE IN AN ENVIRONMENT
CHARACTERIZED BY MODERATE TO HIGH CAPE /1500-2000 J/KG/ AND LOW TO
MODERATE SHEAR. THIS ENVIRONMENT EXTENDS EASTWARD ACROSS MUCH OF
SOUTHERN NEW ENGLAND NEARLY TO THE COAST. THUS BELIEVE THESE
STORMS WILL BE ABLE TO SUSTAIN THEMSELVES AS THEY MOVE EASTWARD.
SOUTHWEST WINDS INCREASE ALOFT WITH 850 MB WINDS FORECAST TO
REACH 25-35 KNOTS AND 500 MB WINDS 35-40 KNOTS. THE MID LEVEL
LAPSE RATES ARE 6 TO 6.5 DEGREES IN OUR NORTHERN/WESTERN AREAS
THIS AFTERNOON. MODEL CROSS SECTIONS SHOW DEEP CLOUD-LEVEL
MOISTURE MOVING INTO NEW ENGLAND...AND PRECIPITABLE WATER VALUES
BETWEEN 1.5 AND 2.0 INCHES.
THE QUESTION REMAINING IS WHETHER THE LINE OF STORMS MOVING INTO
SOUTHERN NEW ENGLAND WILL BE ENOUGH TO WORK OVER THE ATMOSPHERE TO
PRECLUDE ANY ADDITIONAL STORMS TONIGHT WITH THE FRONT. PER THE
SATELLITE THERE IS AN AREA OF CLEARING IMMEDIATELY BEHIND THE THIS
LINE WHICH COULD GIVE US ANOTHER PERIOD OF SUN THIS AFTERNOON
PARTICULARLY IN WESTERN ZONES DEPENDING ON THE SPEED OF THE LINE.
HOWEVER...WITHOUT ANY CLEARING THERE MAY NOT BE ENOUGH INSTABILITY
TO SUSTAIN ANY THUNDERSTORMS. CURRENT RADAR TRENDS INDICATE
ANOTHER LINE OF THUNDERSTORMS ACROSS THE GREAT LAKES AND FAR
WESTERN NYS. SO FOR THE TIME BEING...WILL KEEP THE CURRENT
FORECAST WITH CATEGORICAL POPS THIS EVENING /MAINLY WESTERN
ZONES/.
SEVERE THUNDERSTORMS ARE LIKELY...PER THE SEVERE THUNDERSTORM
WATCH...MAIN THREATS ARE DAMAGING WINDS AND LARGE HAIL. WITH WET
BULB ZERO HEIGHTS ABOUT 11KFT...LARGE HAIL IS GOING TO BE A BIT
HARDER TO ACHIEVE. WHILE SHEAR IS NOT OPTIMAL...THERE IS ENOUGH
SHEAR FOR THE POSSIBILITY OF AN ISOLATED TORNADO. HEAVY RAIN AND
FLOODING ARE A GREATER POSSIBILITY WITH PWAT VALUES 150 PERCENT OF
NORMAL.
&&
.SHORT TERM /10 PM THIS EVENING THROUGH MONDAY NIGHT/...
TONIGHT...
MODELS ARE IN DECENT AGREEMENT ON THE TIMING OF THE COLD FRONT...
THOUGH THE 12Z RUNS OF THE NAM/GFS SLOWED THE FRONT A BIT TO COME
MORE IN LINE WITH THE 21/00Z ECMWF. THIS BRINGS THE FRONT INTO
WESTERN PORTIONS OF THE AREA ABOUT 06Z AND TO THE EAST COAST BY
12Z. THE UPPER WINDS...INSTABILITY...AND HIGH PRECIPITABLE WATER
VALUES ALL LINGER INTO THE FIRST HALF OF THE NIGHT. CONTINUED
CATEGORICAL POPS THROUGH THE FIRST PART OF THE NIGHT. AS NOTED
ABOVE IN THE NEAR TERM SECTION...MAIN UNCERTAINTY FOR TONIGHT IS
WHETHER THE AREA WILL BE WORKED OVER ENOUGH BY THE STORMS THIS
AFTERNOON TO PRECLUDE ANY SEVERE WEATHER. TEMPS COME FROM
MOS...WITH AN EYE TOWARD DEWPOINTS REMAINING IN THE 60S TO NEAR 70
DURING THE NIGHT.
MONDAY...
COLD FRONT MOVES OFF THE EAST COAST AS AROUND 12Z WITH DRIER AIR
MOVING IN FROM WEST TO EAST. GENERALLY CLEARING SKIES ACROSS THE
AREA THOUGH MAY SEE SOME DIURNAL CUMULUS CLOUDS IN THE AFTERNOON
AND EVENING. TEMPS AT 850 MB WILL BE 9-12C...WHICH MIXED WOULD
PRODUCE MAX TEMPS IN THE UPPER 70S AND LOWER 80S.
MONDAY NIGHT...HIGH PRESSURE BUILDS INTO THE REGION WITH DRIER AND
COOLER AIR PUSHING INTO THE AREA. GOOD RADIATIONAL COOLING
EXPECTED OVERNIGHT WITH FEW CLOUDS IF ANY AND LIGHT WINDS.
DEWPOINTS IN THE UPPER 40S TO LOW 50S WILL ALLOW TEMPERATURES TO
FALL INTO THE UPPER 40S ACROSS THE NORTHWEST AND LOW TO MID 50S
ELSEWHERE.
&&
.LONG TERM /TUESDAY THROUGH SUNDAY/...
MODELS ARE GENERALLY IN CONSENSUS FOR MUCH OF THE EXTENDED. NAM IS
SLOWER TO LIFT OUT THE UPPER TROUGH...BUT CONSENSUS OF OTHER MODELS
IS QUICKER. CMC INDICATES A WEAK LOW PRESSURE OFF THE MID ATLANTIC
COAST 12Z THU...BUT OTHER MODELS INDICATE RETURN FLOW FROM HIGH
PRESSURE WITH A COLD FRONT ADVANCING FROM THE WEST AND WILL GO WITH
THIS MODEL CONSENSUS. ULTIMATELY THE CMC CATCHES UP WITH THE FRONT
AND TIMING IS COMPARABLE FOR A THURSDAY NIGHT FRONTAL PASSAGE
ACROSS OUR AREA...WHICH IS A LITTLE BIT QUICKER THAN YESTERDAY/S
RUNS. ECMWF AND GFS BOTH INDICATE HIGH PRESSURE FOR SAT...BUT INTO
NEXT WEEKEND WILL NEED TO MONITOR POSSIBLE TROPICAL MOISTURE WITH
UNCERTAINTY IN THE MODELS. GIVEN MODEL SIMILARITIES...WILL UTILIZE
PRIMARILY GFS FOR EXTENDED.
TUESDAY AND TUESDAY NIGHT... UPPER TROF PIVOTS EASTWARD OFF THE
ATLANTIC COAST DURING TUESDAY...WHILE SURFACE HIGH PRESSURE CENTER
MOVES TO AND EVENTUALLY OFF THE MID ATLANTIC COASTLINE. FEW CLOUDS
EXPECTED DURING THIS PERIOD. HIGHS MAINLY 75 TO 80...TUESDAY NIGHT
GOOD RADIATIONAL COOLING BRINGS A SECOND NIGHT OF BELOW NORMAL
LOWS...MAINLY AROUND 50 TO THE UPPER 50S.
WEDNESDAY AND WEDNESDAY NIGHT...
GETTING INTO RETURN FLOW AS HIGH PRESSURE MOVES FURTHER
OFFSHORE...WITH INCREASING SOUTHERLY FLOW. EXPECT A GRADUAL INCREASE
IN HUMIDITY WITH TEMPS CLOSE TO SEASONABLE. COULD SEE SOME INCREASE
IN CLOUDS...BUT PRECIP SHOULD GENERALLY HOLD OFF UNTIL APPROACHING
COLD FRONT GETS CLOSER TO OUR AREA. CONTINUED SLIGHT CHANCE POPS
WESTERN ZONES LATE WED NIGHT.
THURSDAY...
THU SHOULD BE HUMID WITH A COLD FRONT APPROACHING FROM THE
WEST...MOVING INTO OR INTO WESTERN FRINGES OF SOUTHERN NEW ENGLAND.
POTENTIAL FOR SHOWERS AND THUNDERSTORMS IN SOUTHERN NEW ENGLAND
AHEAD OF AND ALONG THIS FRONT...ATTM WILL GO WITH CHANCE POPS.
CONTINUED CHANCE FOR SHOWERS AND THUNDERSTORMS THROUGH THU NIGHT AS
COLD FRONT TRACKS THROUGH THE FORECAST AREA.
FRIDAY...
COLD FRONT SHOULD SLIDE OFFSHORE WITH HIGH PRESSURE REPLACING IT
OVER OUR AREA. LOWER CONFIDENCE IN THIS TIMEFRAME AS PREVIOUS MODEL
RUNS HAD FRONT STILL OVER THE AREA. FOR THIS PACKAGE...KEPT SLIGHT
CHANCE POPS IN THE MORNING BUT THEN DRY.
SATURDAY...
SATURDAY SHOULD BE QUIET WITH HIGH PRESSURE ACROSS THE REGION.
HOWEVER...MODELS DIFFER IN SOLUTIONS AND CONFIDENCE IS LOW. SOME
INCREASE IN MOISTURE EXPECTED INTO SAT NIGHT...BUT WHETHER IT IS TROPICAL
IN NATURE OR NOT IS STILL YET TO BE DETERMINED.
&&
.AVIATION /19Z SUNDAY THROUGH FRIDAY/...
FORECASTER CONFIDENCE LEVELS...
LOW...LESS THAN 30 PERCENT
MODERATE...30 PERCENT TO 60 PERCENT
HIGH...GREATER THAN 60 PERCENT
THROUGH 00Z...MODERATE TO HIGH CONFIDENCE. A LINE OF SHOWERS AND
THUNDERSTORMS ARE MOVING ACROSS THE WESTERN ZONES AT 18Z. THIS
LINE SHOULD PROGRESS STEADILY EASTWARD OVER THE NEXT SEVERAL
HOURS. CONDITIONS WILL BRIEFLY LOWER TO MVFR-IFR IN ANY
THUNDERSTORMS. HEAVY RAIN IS LIKELY WITH THESE STORMS...AND
POSSIBLY WIND GUSTS 40-50 KNOTS.
TONIGHT...MODERATE CONFIDENCE. A COLD FRONT WILL APPROACH SOUTHERN
NEW ENGLAND THIS EVENING...CROSSING THE REGION FROM WEST TO EAST
BETWEEN 06 AND 12Z. AREAS OF MVFR-IFR LIKELY IN SHOWERS AND
TSTMS THROUGH 06Z...WITH THE POTENTIAL FOR HEAVY DOWNPOURS AND WIND
GUSTS AROUND 50 KNOTS. WINDS WILL SHIFT TO WEST-NORTHWEST AFTER
THE FRONT MOVES THROUGH...WITH ANY LOW CONDITIONS IMPROVING TO VFR
ESPECIALLY IN THE CT VALLEY AND VICINITY.
MONDAY...HIGH CONFIDENCE. COLD FRONT MOVES OFFSHORE WITH VFR IN
CLEARING SKIES ALL AREAS. CLOUDS MAY REDEVELOP IN THE AFTERNOON
BUT CONDITIONS SHOULD REMAIN VFR.
MONDAY NIGHT...HIGH CONFIDENCE. VFR.
KBOS TERMINAL...HIGH CONFIDENCE IN TAF CONDITIONS. MODERATE
CONFIDENCE IN TIMING.
OUTLOOK...TUESDAY THROUGH FRIDAY...
TUESDAY AND WEDNESDAY...MODERATE TO HIGH CONFIDENCE FOR VFR
CONDITIONS.
&&
.MARINE...
EXPECT S-SW WINDS GUSTING UP TO 20 KT WITH SEAS BUILDING UP TO 5 FT
ON THE OUTER WATERS. SHOWERS AND TSTMS ARE LIKELY TONIGHT WITH
LOCALLY ROUGH SEAS POSSIBLE. A SMALL CRAFT ADVISORY IS IN EFFECT
THROUGH THE NIGHT FOR THESE ZONES.
MONDAY...WINDS SHIFT TO W-NW AS COLD FRONT CLEARS THE WATERS. EXPECT
SEAS STARTING AROUND 5 FT ON THE OUTER AND SOUTHERN WATERS...THEN
DIMINISHING THROUGH THE DAY. THESE SEAS WILL LINGER LONGEST SOUTH
OF NANTUCKET.
MONDAY NIGHT...WINDS AND SEAS REMAIN BELOW SMALL CRAFT CRITERIA.
OUTLOOK...TUESDAY THROUGH FRIDAY...
TUESDAY AND WEDNESDAY...HIGH PRESSURE. WINDS AND SEAS EXPECTED TO
REMAIN BELOW SMALL CRAFT ADVISORY CRITERIA.
THURSDAY AND THURSDAY NIGHT...THERE IS A CHANCE FOR SOUTHWEST WIND
GUSTS TO 25 KT AND SEAS UP TO 5 FT ON THE OUTER COASTAL
WATERS...AHEAD OF AN APPROACHING COLD FRONT.
&&
.HYDROLOGY...
PRECIPITABLE WATER VALUES OF 1.5 TO 2.0 INCHES IN PLACE WILL LINGER
UNTIL THE COLD FRONT MOVES THROUGH LATER TONIGHT. THIS WILL
SUPPORT LOCALLY HEAVY DOWNPOURS...AND COULD PRODUCE POCKETS OF URBAN/POOR
DRAINAGE FLOODING THIS AFTERNOON AND TONIGHT. BUT LOW AND MID-
LEVEL SOUTHWEST WINDS WILL KEEP STORMS MOVING FAIRLY WELL.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
MA...NONE.
NH...NONE.
RI...NONE.
MARINE...SMALL CRAFT ADVISORY FROM 10 PM THIS EVENING TO NOON EDT
MONDAY FOR ANZ235-237.
SMALL CRAFT ADVISORY FROM 1 AM TO NOON EDT MONDAY FOR ANZ250.
SMALL CRAFT ADVISORY FROM 7 PM THIS EVENING TO 7 PM EDT MONDAY
FOR ANZ254>256.
&&
SYNOPSIS...RLG/NMB
NEAR TERM...RLG
SHORT TERM...RLG
LONG TERM...NMB
AVIATION...RLG/NMB
MARINE...RLG/NMB
HYDROLOGY...HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAUNTON MA 403 AM EDT SUN AUG 21 2011 CTZ002>004-MAZ002>024-026-NHZ011-012-015-RIZ001>008-220815- HARTFORD CT-TOLLAND CT-WINDHAM CT-WESTERN FRANKLIN MA- EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-CENTRAL MIDDLESEX MA- WESTERN ESSEX MA-EASTERN ESSEX MA-WESTERN HAMPSHIRE MA- WESTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-EASTERN HAMPDEN MA- SOUTHERN WORCESTER MA-WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA- SUFFOLK MA-EASTERN NORFOLK MA-NORTHERN BRISTOL MA- WESTERN PLYMOUTH MA-EASTERN PLYMOUTH MA-SOUTHERN BRISTOL MA- SOUTHERN PLYMOUTH MA-BARNSTABLE MA-DUKES MA-NANTUCKET MA- NORTHERN MIDDLESEX MA-CHESHIRE NH-EASTERN HILLSBOROUGH NH- WESTERN AND CENTRAL HILLSBOROUGH NH-NORTHWEST PROVIDENCE RI- SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-EASTERN KENT RI-BRISTOL RI- WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI- 403 AM EDT SUN AUG 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN CONNECTICUT...CENTRAL MASSACHUSETTS...EASTERN MASSACHUSETTS...NORTHEASTERN MASSACHUSETTS...SOUTHEASTERN MASSACHUSETTS...WESTERN MASSACHUSETTS...SOUTHERN NEW HAMPSHIRE...NORTHERN RHODE ISLAND AND SOUTHERN RHODE ISLAND. .DAY ONE...TODAY AND TONIGHT. A FEW STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND THIS EVENING. THESE THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS AND HAIL. THEY MAY ALSO PRODUCE BRIEF HEAVY DOWNPOURS THAT COULD CAUSE LOCAL URBAN AND POOR DRAINAGE FLOODING. THE GREATEST RISK OF STRONGER THUNDERSTORMS SHOULD BE ACROSS SOUTHERN NEW HAMPSHIRE... CENTRAL AND WESTERN MASSACHUSETTS AND NORTHERN CONNECTICUT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED TODAY. ANZ230>237-250-251-254>256-220815- BOSTON HARBOR-CAPE COD BAY-NANTUCKET SOUND-VINEYARD SOUND- BUZZARDS BAY-RHODE ISLAND SOUND-NARRAGANSETT BAY-BLOCK ISLAND SOUND- COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK NATIONAL MARINE SANCTUARY-MASSACHUSETTS BAY AND IPSWICH BAY- COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20 NM- COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD AND NANTUCKET- COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT TO 20 NM SOUTH OF BLOCK ISLAND- 403 AM EDT SUN AUG 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MASSACHUSETTS COASTAL WATERS AND RHODE ISLAND COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. THUNDERSTORMS ARE POSSIBLE LATER THIS AFTERNOON AND TONIGHT. THESE THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS AND LOCALLY HEAVY DOWNPOURS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED.
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
243 PM EDT SUN AUG 21 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0228 PM TSTM WND DMG WESTMORELAND 42.97N 72.45W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREES AND WIRES DOWN ON SOUTH VILLAGE ROAD
0229 PM TSTM WND DMG SURRY 43.05N 72.33W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREE DOWN ACROSS ROAD ON ROUTE 12A NEAR FIRE STATION
&&
KABSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
247 PM EDT SUN AUG 21 2011
MAZ003>005-010-026-NHZ011-012-015-211945-
CENTRAL MIDDLESEX COUNTY MA-CHESHIRE NH-EASTERN FRANKLIN MA-EASTERN
HAMPSHIRE MA-EASTERN HILLSBOROUGH NH-NORTHERN WORCESTER MA-NORTHWEST
MIDDLESEX COUNTY MA-WESTERN AND CENTRAL HILLSBOROUGH NH-
247 PM EDT SUN AUG 21 2011
...STRONG THUNDERSTORMS APPROACHING NORTH CENTRAL MASSACHUSETTS AND
THE MANCHESTER NASHUA REGION OF SOUTHERN NEW HAMPSHIRE...
AT 245 PM EDT...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING
WIND GUSTS TO 50 MPH AND UP TO NICKEL SIZED HAIL EXTENDED FROM KEENE
TO ORANGE. THE STORMS WERE MOVING NORTHEAST AT 25 MPH.
THIS LINE OF STORMS WILL MOVE ACROSS MUCH OF NORTH CENTRAL
MASSACHUSETTS AND SOUTHWEST NEW HAMPSHIRE THROUGH 4 PM.
FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. THESE STORMS
MAY STRENGTHEN AND COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. STAY
TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE
WARNINGS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE.
&&
LAT...LON 4306 7164 4307 7152 4305 7150 4305 7146
4302 7144 4301 7139 4293 7137 4293 7144
4284 7143 4282 7139 4238 7148 4241 7259
4312 7184 4314 7166
JWDPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
313 PM EDT SUN AUG 21 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0228 PM TSTM WND DMG WESTMORELAND 42.97N 72.45W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREES AND WIRES DOWN ON SOUTH VILLAGE ROAD
0229 PM TSTM WND DMG SURRY 43.05N 72.33W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREE DOWN ACROSS ROAD ON ROUTE 12A NEAR FIRE STATION
0237 PM TSTM WND DMG ALSTEAD 43.15N 72.37W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREES DOWN ON WIRES ON ROUTE 12A. TREES AND WIRES DOWN
BLOCKING HIGH STREET.
&&
KABSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 313 PM EDT SUN AUG 21 2011 MAZ003-004-NHZ011-015-212000- CHESHIRE NH-EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-WESTERN AND CENTRAL HILLSBOROUGH NH- 313 PM EDT SUN AUG 21 2011 ...STRONG THUNDERSTORM IN NORTH CENTRAL MASSACHUSETTS... AT 310 PM EDT...A STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH AND PENNY SIZED HAIL WAS NEAR ROYALSTON...AND WAS MOVING NORTHEAST AT 40 MPH. * SOME LOCATIONS AFFECTED INCLUDE...WINCHENDON...FITZWILLIAM... RINDGE...JAFFREY...SHARON...PETERBOROUGH...TEMPLE AND GREENFIELD. FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. THESE STORMS MAY STRENGTHEN AND COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE WARNINGS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE. && LAT...LON 4303 7190 4286 7173 4258 7216 4267 7228 JWD
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
315 PM EDT SUN AUG 21 2011
CTZ002-212000-
HARTFORD CT-
315 PM EDT SUN AUG 21 2011
AT 313 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL...AND WIND GUSTS
UP TO 40 MPH...10 MILES WEST OF BRISTOL...OR ABOUT 9 MILES NORTHWEST
OF WOLCOTT...MOVING EAST AT 20 MPH.
* SOME LOCATIONS AFFECTED INCLUDE...BRISTOL...BURLINGTON...
SOUTHINGTON...PLAINVILLE...CANTON...NEW BRITAIN...FARMINGTON AND
AVON.
FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. THESE STORMS
MAY STRENGTHEN AND COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. STAY
TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE
WARNINGS.
&&
LAT...LON 4181 7295 4186 7296 4191 7286 4163 7277
4157 7277 4155 7282 4156 7284 4155 7284
4154 7286 4156 7288 4156 7295 4164 7294
4164 7299 4180 7302
SIPPRELLPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
346 PM EDT SUN AUG 21 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0228 PM TSTM WND DMG WESTMORELAND 42.97N 72.45W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREES AND WIRES DOWN ON SOUTH VILLAGE ROAD
0229 PM TSTM WND DMG SURRY 43.05N 72.33W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREE DOWN ACROSS ROAD ON ROUTE 12A NEAR FIRE STATION
0235 PM TSTM WND DMG WALPOLE 43.08N 72.43W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREES AND WIRES DOWN ON KINGSBURY ROAD. LARGE LIMBS
DOWN ON COUNTY ROAD.
0237 PM TSTM WND DMG ALSTEAD 43.15N 72.37W
08/21/2011 CHESHIRE NH AMATEUR RADIO
TREES DOWN ON WIRES ON ROUTE 12A. TREES AND WIRES DOWN
BLOCKING HIGH STREET.
0246 PM TSTM WND DMG KEENE 42.95N 72.30W
08/21/2011 CHESHIRE NH CO-OP OBSERVER
NUMEROUS REPORTS THROUGHOUT DOWNTOWN KEENE OF MULTIPLE
LARGE TREE LIMBS DOWN OBSTRUCTING SIDEWALKS AND ROADS.
ONE TREE STRUCK BY LIGHTNING AND ANOTHER TREE DOWN
ACROSS A PORTION OF A HOUSE.
&&
KABThe Brookhaven radar (KOKX), 102 km away, was scanning. The volume nearest the first event began at 19:52 UTC.
1 thunderstorm wind. Local standard time, as filed.
A large tree on Pliny Street was downed by thunderstorm winds, landing on a house.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Connecticut in 2011Every state in 2011This day in weather historyWarnings in Connecticut, August 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 337766.