A low pressure system moved eastward across the region on Wednesday, July 21st. The system's warm front lifted to the north during the morning ushering in a moist and unstable airmass.
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 ALY wrote it up.
A low pressure system moved eastward across the region on Wednesday, July 21st. The system's warm front lifted to the north during the morning ushering in a moist and unstable airmass. A cold front moved across the area during the evening. In addition, a vigorous disturbance in the upper levels of the atmosphere, along with strong winds, led to the development of multiple lines and clusters of strong to severe thunderstorms during the afternoon and evening hours.
A supercell moved across Litchfield County during the afternoon and produced intermittent damage along a track from Sharon to Litchfield with brief tornadic touchdowns confirmed in East Litchfield, Thomaston and Terryville.
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 Albany, NY wrote its last area forecast discussion before the first event at Jul 21, 12:19 PM EST, 1 hour 46 minutes earlier.
AREA FORECAST DISCUSSION...CORRECTED NATIONAL WEATHER SERVICE ALBANY NY 119 PM EDT WED JUL 21 2010 .SYNOPSIS... AN AREA OF LOW PRESSURE OVER THE GREAT LAKES REGION WILL MOVE EASTWARD TRIGGERING SHOWERS AND THUNDERSTORMS MAINLY THIS AFTERNOON AND EVENING. WEAK HIGH PRESSURE WILL BUILD IN FOR THURSDAY. ANOTHER LOW PRESSURE SYSTEM WILL IMPACT OUR REGION FRIDAY INTO THE WEEKEND. && .NEAR TERM /THROUGH TONIGHT/... SEVERE THUNDERSTORM WATCH 507 HAS BEEN ISSUED FOR ALL OF CWA THROUGH 00Z/THU. CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING...WITH THE MAIN THREAT BEING POTENTIALLY DAMAGING WINDS...AND LARGE HAIL. IT APPEARS THAT ACTIVITY MAY BECOME ORGANIZED INTO SEVERAL LINES...WITH POTENTIAL EMBEDDED BOWING SEGMENTS. FIRST SHORTWAVE LOCATED OVER SOUTHERN ONTARIO WILL LIKELY ALLOW SCATTERED STORMS TO FIRE ACROSS N/W AREAS OVER THE NEXT 2-4 HOURS...BEFORE SHIFTING E/SE. ANOTHER...POTENT SHORTWAVE LOCATED OVER THE WESTERN GREAT LAKES WILL THEN APPROACH TOWARD 00Z...WHICH SHOULD ALLOW ADDITIONAL STRONG TO SEVERE STORMS TO DEVELOP PRIOR TO ITS ARRIVAL LATER THIS AFTERNOON/EARLY EVENING. PREVIOUS DISCUSSION FOLLOWS... STRONG TO SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EVENING... AS OF 1030 AM...THUNDERSTORMS ALREADY TAKEN PLACE OVER BUFFALO/S AREA. IN OUR AREA...ENHANCED CU FIELD SEEN ACROSS THE MOHAWK VALLEY...AND THESE MIGHT ALREADY BE SPAWNING A FEW ISOLATED SHOWERS. ISSUED A NOWCAST TO REFLECT THIS TREND. ONE VERY SHORT WEAK IS MOVING ACROSS THE REGION NOW WITH LITTLE INSTABILITY TO WORK WITH. THE STRONGER ONE...ABOUT TO MOVE OVER THE GREAT LAKES...WILL BE THE TRIGGER FOR THIS AFTERNOON. THIS SHORT WAVE WILL INCREASE THE MID LEVEL WIND FIELD AS WELL AS COOLING THE MID LEVEL TEMPS. IN ADDITION...IT WILL DRAG A COLD FRONT THROUGH THE AREA BUT NOT UNTIL MUCH LATER IN THE AFTERNOON. MOST MODELS INDICATE THAT THE CONVECTION WILL COME LATER INSTEAD OF EARLIER...PROBABLY NOT IMPACTING OUR REGION UNTIL AFTER 18Z AND LINGER WELL AFTER 00Z. IT LOOKS AS IF LINE OF STORMS WILL ORGANIZE...PERHAPS INTO BOWING SEGMENTS...WITH ISOLATED SUPERCELLS POSSIBLE. MODIFYING OUR CURRENT 12Z RAOB...WE GET UP TO 2000 J/KG WITH THE 0-6 KM SHEAR APPROACHING 40KTS. MID LEVEL LAPSE RATES ARE MODEST BUT SHOULD STEEPEN TO AROUND 6.0 C/KM BY THIS AFTERNOON. THE DATA CONTINUES TO SUPPORT AT LEAST A SLIGHT RISK OF SEVERE THUNDERSTORMS. DECIDED TO BEEF UP THE ENHANCED WORDING...GOING WITH "POSSIBLE DAMAGING WINDS" AND "POSSIBLE LARGE HAIL." NO WATCHES YET BUT ONE COULD BE COMING SOON. OUR SOUNDING INDICATES PROJECTED HIGH TEMPS ARE ON TRACK...85-90 HUDSON VALLEY...80-85 MOST OTHER AREAS...EXCEPT 75-80 NW AREAS. LEFT HIGH TEMPS ALONE FOR NOW. OTHERWISE...NO REAL CHANGES TO THE EXISTING FORECAST EXCEPT TO TOUCH UP THE HOURLY GRIDS. *******PREVIOUS NEAR TERM DISCUSSION****************** A WAVE OF LOW PRESSURE WILL MOVE EASTWARD AND ACROSS THE REGION TODAY AS A MORE VIGOROUS SHORT WAVE MOVES THROUGH LONGWAVE TROUGH. THE TIMING OF THE SHORT WAVE AND UPPER LEVEL TROUGH AXIS WILL UTILIZE THE HEATING OF DAY. THE MODELS HAVE COME INTO BETTER AGREEMENT WITH THE MOVEMENT AND STRENGTH OF THE SURFACE LOW. THERE IS THE POTENTIAL FOR STRONG TO SEVERE STORMS THIS AFTERNOON AND EARLY EVENING. THE MODELS INDICATE 850-500 LAPSE RATES OF AROUND 6C/KM WITH 500 MB TEMPERATURES COOLING TO -10 TO -12C BY EVENING. THE 0-6 KM BULK SHEAR IS FORECAST TO BE 40 TO 50 KNOTS. 500 MB WINDS FORECAST TO INCREASE TO 40 TO 50 KNOTS AND 850 MB WINDS TO 25 TO 30 KNOTS. THE REGION IS FORECAST TO BE UNDER THE LEFT- FRONT QUADRANT/EXIT REGION OF 100+ KNOT JET BY LATE AFTERNOON/EARLY EVENING. AS FOR CAPE EXPECTING VALUES OF 1000 TO 1500 J/KG DEPENDING CLOUD COVER. ALL THIS IS POINTING TOWARD SOME SEVERE THUNDERSTORMS ACROSS THE FORECAST AREA THIS AFTERNOON AND EARLY EVENING. THE MODEL SOUNDINGS CONTINUE INDICATE POSSIBLE INVERTED-V SIGNATURE IN THE LOWER LEVELS WHICH COULD PROMOTE DOWNBURST WINDS...THIS OCCURRED ON SATURDAY JULY 17TH. BOTH DAMAGING WINDS AND LARGE HAIL ARE THE THREATS WITH THE WINDS THE MAIN THREAT. WILL KEEP ENHANCED WORDING IN GRIDS. DECIDED TO KEEP POPS IN CHANCE CATEGORY AND WENT WITH SCATTERED WORDING FOR COVERAGE. PRECIPITABLE WATER VALUES ARE EXPECTED TO INCREASE TO AROUND 1 1/2 INCHES WHICH MEANS SOME STORMS WILL PRODUCE HEAVY DOWNPOURS. && .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... THE SURFACE LOW WILL DEEPEN AS IT HEADS TOWARD THE CANADIAN MARITIMES THURSDAY. WILL HAVE CYCLONIC FLOW ACROSS REGION WITH BRISK AND GUSTY NORTHWEST WINDS. IT WILL BE COOLER ACROSS MUCH OF THE FORECAST AREA WITH HIGHS IN THE 70S TO LOWER 80S. IT WILL BE WARMER ACROSS THE MID HUDSON VALLEY AND LITCHFIELD COUNTY WITH MID TO UPPER 80S. DEW POINTS WILL BE DROPPING AS THE DAY PROGRESSES. HAVE LIMITED ANY CHANCE FOR SHOWERS TO THE WESTERN ADIRONDACKS. THE WINDS WILL DIMINISH THURSDAY NIGHT AS THE PRESSURE GRADIENT WEAKENS AND THE SURFACE HIGH BUILDS IN. HEIGHTS WILL RISE AT ALL LEVELS. COMFORTABLE SLEEPING WEATHER WITH TEMPERATURES IN THE 50S TO LOWER 60S. A WARM FRONT WILL APPROACH THE REGION FROM THE OHIO VALLEY FRIDAY. CLOUDS WILL BE IN INCREASE AND MUCH OF REGION SHOULD REMAIN IN THE COOLER SIDE OF THE BOUNDARY WHICH WILL KEEP TEMPERATURES FROM GETTING VERY WARM. THE FRONT WILL MOVE NORTHWARD ACROSS THE REGION FRIDAY NIGHT ALLOWING A MUGGY AIRMASS TO MOVE IN. CONVECTION IS EXPECTED AHEAD OF AND ALONG THE BOUNDARY. && .LONG TERM /SATURDAY THROUGH TUESDAY/... A LOOK AT MODEL THETA/E VALUES SUGGESTS THE ENTIRE FORECAST AREA IS IN THE WARM SECTOR SATURDAY MORNING...WHILE THERE ARE SLIGHT DIFFERENCES BETWEEN THE ECMWF AND THE GFS...MIDDAY THETA/E VALUES FOR THE MOST PART RANGE FROM AROUND 350K IN THE ADIRONDACKS AND SOUTHERN VERMONT TO AS HIGH AS 365 IN OUR SOUTHEASTERN AREAS. THE AIR GETS PRETTY OPPRESSIVE WITH DEWPOINTS IN THE LOWER 70S ALTHOUGH WE DID GO A COUPLE DEGREES BELOW THE GMOS MAXIMUM TEMPERATURE IN THE HUDSON VALLEY SINCE THERE WILL BE SOME CLOUDS WHICH WILL BLOCK OUT SOME OF THE SUNSHINE. EVEN SO...WE ARE LOOKING AT AROUND 90 IN THE HUDSON VALLEY FROM ALBANY SOUTH...SO IT WILL FEEL RATHER HOT AND SULTRY. WE ARE ALSO LOOKING AT RATHER RESPECTABLE CAPE VALUES MIDDAY SATURDAY...THE GFS COMES UP WITH OVER 2000 J/KG SOUTH AND EAST OF ALBANY AND REACHES 3000 IN LITCHFIELD COUNTY. PWAT VALUES ARE IMPRESSIVE AS WELL...RIGHT AROUND 2 INCHES. THE GFS AND ECMWF ARE CURRENTLY SUGGESTING THE COLD FRONT WILL COME THROUGH SATURDAY EVENING AND BE JUST SOUTH OF ULSTER...DUTCHESS...AND LITCHFIELD COUNTIES BY 12Z SUNDAY. WE HAVE LINGERING SHOWERS...NO THUNDER...SUNDAY MORNING WITH JUST A SLIGHT CHANCE SUNDAY AFTERNOON AND HOPEFULLY SKIES SHOULD BE PARTLY CLOUDY BY MID AFTERNOON AND MOSTLY CLEAR BY EVENING. LOWS SATURDAY NIGHT WILL RANGE FROM THE UPPER 50S ACROSS THE ADIRONDACKS TO NEAR 70 IN THE HUDSON VALLEY. SUNDAY WILL BE QUITE A BIT COOLER...ESPECIALLY NORTH AND WEST OF ALBANY...WITH HIGHS IN THE ADIRONDACKS AND HIGHER ELEVATIONS OF SOUTHERN VERMONT ONLY REACHING THE MID 70S...A LITTLE OVER 80 IN THE MOHAWK VALLEY AND CAPITAL DISTRICT...AND IN THE MID 80S IN THE LOWER HUDSON AND HOUSATONIC VALLEYS. AS COOLER AND DRIER AIR POURS INTO THE REGION BEHIND THE FRONT LOWS SUNDAY NIGHT WILL RANGE FROM THE UPPER 40S NORTH TO JUST OVER 60 IN THE HUDSON VALLEY. MONDAY AND TUESDAY WILL BE SUNNY AND PLEASANT...HIGHS FROM THE MID 70S TO THE MID 80S WITH LOWS MOSTLY IN THE 50S...MIDDAY HUMIDITY VALUES A LITTLE UNDER 50 PERCENT...AND NO PRECIP. && .AVIATION /18Z WEDNESDAY THROUGH SUNDAY/... ...SEVERE THUNDERSTORM WATCH UNTIL 800 PM... THUNDERSTORMS HAVE ALREADY DEVELOPED UPSTREAM OF THE TAF SITES...AND IT NOW APPEARS THAT THEY COULD HAVE A DIRECT IMPACT ON ALL OF THEM. WE GAVE THE TIMES OF TSRA OUR BEST SHOT WHICH IS EARLIEST AT KGFL/LATEST AT KPOU. HOWEVER ANY STORM COULD POP UP ANY TIME FROM 18Z ON. ANY OF THE STORMS COULD CONTAIN STRONG DAMAGING WINDS AND LARGE HAILS. WE ARE UNDER A SEVERE THUNDERSTORMS UNTIL 00Z. MUCH OF THE TIME WILL BE VFR WITH ONLY MODERATE SURFACE WINDS AROUND 10KTS FROM THE SOUTH OR SOUTHWEST...A LITTLE MORE GUSTY AT KALB. LATER THIS EVENING...THUNDERSTORMS WILL DISSIPATE AFTER 02Z AFTER THE COLD FRONT MOVES ON BY ...AND WE WILL BE LEFT WITH USUAL FOG DILEMMA...ESPECIALLY AT KGFL. A SLIGHT BREEZE BEHIND THE COLD FRONT MIGHT MITIGATE THE FORMATION OF IFR FOG AT KGFL. VFR CONDITIONS EXPECTED AT THE OTHER TAF SITES. HOWEVER...IF HEAVY RAINFALL FALLS AT ANY OF THE TAF SITES...WE WILL HAVE TO RECONSIDER THE FOG SCENARIO. PLEASE REFER BACK TO OUR DISCUSSION LATER ON. OUTLOOK... THU...VFR...NO SIG WX. FRI-SAT NIGHT...VFR/MVFR...CIG/VIS. INCR CHC IFR IN SHRA/TSRA. SUN...VFR WITH A CHC OF -SHRA. MON/TUE...VFR...NO SIG WX. && .FIRE WEATHER... AN AREA OF LOW PRESSURE OVER THE GREAT LAKES REGION WILL MOVE EASTWARD TODAY TRIGGERING SHOWERS AND THUNDERSTORMS MAINLY THIS AFTERNOON AND EVENING. SOME STORMS MAY BECOME STRONG TO SEVERE. WEAK HIGH PRESSURE WILL BUILD IN FOR THURSDAY. ANOTHER LOW PRESSURE SYSTEM WILL IMPACT OUR REGION FRIDAY INTO THE WEEKEND. RELATIVE HUMIDITY VALUES WILL DROP TO MINIMUMS IN THE 50S THIS AFTERNOON AND RECOVER TO NEAR 100 PERCENT TONIGHT. MINIMUMS THURSDAY AFTERNOON WILL BE MAINLY IN THE MID 40S TO 50S WITH SLIGHT LOWER VALUES IN THE MID HUDSON VALLEY AND NORTHWEST CONNECTICUT AND A BIT HIGHER VALUES ACROSS THE WESTERN ADIRONDACKS WITH A RECOVER TO 90 TO NEAR 100 PERCENT THURSDAY NIGHT. A SOUTHERLY FLOW WILL DEVELOP THIS MORNING SHIFTING TO THE SOUTHWEST DURING THE AFTERNOON AHEAD AN APPROACHING COLD FRONT. WINDS WILL SHIFT TO THE WEST WITH THE PASSAGE OF THE FRONT WITH SPEEDS INCREASING ON THURSDAY TO 10 TO 20 MPH WITH GUST UP TO 30 MPH POSSIBLE. && .HYDROLOGY... AN AREA OF LOW PRESSURE OVER THE GREAT LAKES REGION WILL MOVE EASTWARD TODAY TRIGGERING SHOWERS AND THUNDERSTORMS MAINLY THIS AFTERNOON AND EVENING. WEAK HIGH PRESSURE WILL BUILD IN FOR THURSDAY. CONVECTION IS EXPECTED AGAIN FRIDAY INTO THE WEEKEND AS ANOTHER LOW PRESSURE SYSTEM MOVES ACROSS REGION. THERE IS THE POTENTIAL FOR LOCALLY HEAVY RAINFALL WHICH COULD CAUSE MINOR FLOODING LOW LYING AND POOR DRAINAGE AREAS. WIDESPREAD HEAVY RAIN THAT WOULD SIGNIFICANTLY AFFECT THE RIVERS IS NOT EXPECTED AT THIS TIME. FOR DETAILS ON SPECIFIC AREA RIVERS AND LAKES...INCLUDING OBSERVED AND FORECAST RIVER STAGES AND LAKE ELEVATIONS...PLEASE VISIT THE ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ GRAPHS ON OUR WEBSITE. && .ALY WATCHES/WARNINGS/ADVISORIES... CT...NONE. NY...NONE. MA...NONE. VT...NONE. && NEAR TERM...HWJIV SHORT TERM...HWJIV CORRECTED UTC TIME FOR EXPIRATION OF WATCH WHICH IS 00Z (NOT 02Z).
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ALBANY NY 1131 AM EDT WED JUL 21 2010 CTZ001-013-MAZ001-025-NYZ032-033-038>043-047>054-058>061-063>066- 082>084-VTZ013>015-221115- NORTHERN LITCHFIELD-SOUTHERN LITCHFIELD-NORTHERN BERKSHIRE- SOUTHERN BERKSHIRE-NORTHERN HERKIMER-HAMILTON-SOUTHERN HERKIMER- SOUTHERN FULTON-MONTGOMERY-NORTHERN SARATOGA-NORTHERN WARREN- NORTHERN WASHINGTON-SCHOHARIE-WESTERN SCHENECTADY- EASTERN SCHENECTADY-SOUTHERN SARATOGA-WESTERN ALBANY-EASTERN ALBANY- WESTERN RENSSELAER-EASTERN RENSSELAER-WESTERN GREENE-EASTERN GREENE- WESTERN COLUMBIA-EASTERN COLUMBIA-WESTERN ULSTER-EASTERN ULSTER- WESTERN DUTCHESS-EASTERN DUTCHESS-NORTHERN FULTON-SOUTHEAST WARREN- SOUTHERN WASHINGTON-BENNINGTON-WESTERN WINDHAM-EASTERN WINDHAM- 1131 AM EDT WED JUL 21 2010 ...SEVERE THUNDERSTORM WATCH 507 IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWESTERN CONNECTICUT...WESTERN MASSACHUSETTS...EAST CENTRAL NEW YORK AND SOUTHERN VERMONT. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS A CHANCE OF THUNDERSTORMS FRIDAY INTO SATURDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT WWW.WEATHER.GOV/ALBANY
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
213 PM EDT WED JUL 21 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0154 PM TSTM WND DMG PITTSTOWN 42.84N 73.48W
07/21/2010 RENSSELAER NY EMERGENCY MNGR
TREES DOWN ON COOKS BURO RD. POWER OUTAGES ALSO REPORTED.
&&
BGMSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALBANY NY 225 PM EDT WED JUL 21 2010 NYZ032-033-211900- HAMILTON NY-NORTHERN HERKIMER NY- 225 PM EDT WED JUL 21 2010 ...A STRONG THUNDERSTORM IN NORTHERN HAMILTON COUNTY IN EASTERN NEW YORK... NORTHERN HERKIMER COUNTY IN EASTERN NEW YORK... AT 220 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING...AROUND HALF INCH HAIL...WINDS AROUND 50 MPH...FREQUENT LIGHTNING...AND HEAVY RAIN. THIS STORM WAS LOCATED 19 MILES WEST OF LAKE EATON CAMPGROUND...OR ABOUT 18 MILES NORTH OF OLD FORGE...AND MOVING EAST AT 20 MPH. THE THUNDERSTORM WILL BE NEAR... 8 MILES WEST OF LAKE EATON CAMPGROUND BY 300 PM EDT JPV
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALBANY NY 225 PM EDT WED JUL 21 2010 NYZ047-211900- SCHOHARIE NY- 225 PM EDT WED JUL 21 2010 ...A STRONG THUNDERSTORM IN SCHOHARIE COUNTY IN EAST CENTRAL NEW YORK... AT 220 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING...AROUND HALF INCH HAIL...WINDS AROUND 50 MPH...FREQUENT LIGHTNING. THIS STORM WAS LOCATED 7 MILES WEST OF JEFFERSON...OR ABOUT 6 MILES EAST OF DAVENPORT...AND MOVING EAST AT 25 MPH. THE THUNDERSTORM WILL BE NEAR... JEFFERSON BY 235 PM EDT NORTH BLENHEIM...GILBOA...7 MILES SOUTH OF BREAKABEEN AND 9 MILES SOUTHWEST OF LIVINGSTONVILLE BY 300 PM EDT HWJIV
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALBANY NY 234 PM EDT WED JUL 21 2010 NYZ039-040-082-211915- MONTGOMERY NY-SOUTHERN FULTON NY-NORTHERN FULTON NY- 234 PM EDT WED JUL 21 2010 ...A STRONG THUNDERSTORM IN MONTGOMERY COUNTY IN EASTERN NEW YORK... FULTON COUNTY IN EASTERN NEW YORK... AT 229 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING...AROUND HALF INCH HAIL...WINDS AROUND 50 MPH...FREQUENT LIGHTNING...AND HEAVY RAIN. THIS STORM WAS LOCATED NEAR ST. JOHNSVILLE...OR ABOUT 10 MILES NORTH OF CANAJOHARIE...AND MOVING SOUTHEAST AT 25 MPH. THE THUNDERSTORM WILL BE NEAR... EPHRATAH BY 240 PM EDT JOHNSTOWN AND 6 MILES SOUTHWEST OF GLOVERSVILLE BY 300 PM EDT FONDA BY 305 PM EDT TRIBES HILL BY 310 PM EDT FORT JOHNSON...AMSTERDAM AND 8 MILES SOUTHWEST OF HAGAMAN BY 315 PM EDT AROUND ONE HALF INCH OF RAIN WILL FALL IN A SHORT AMOUNT OF TIME...WHICH WILL CAUSE PONDING OF WATER ON ROADS AND POOR DRAINAGE LOCATIONS. JPV
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALBANY NY 235 PM EDT WED JUL 21 2010 NYZ033-041-042-083-211915- HAMILTON NY-NORTHERN SARATOGA NY-NORTHERN WARREN NY- SOUTHEAST WARREN NY- 235 PM EDT WED JUL 21 2010 ...A STRONG THUNDERSTORM IN HAMILTON COUNTY IN EASTERN NEW YORK... SARATOGA COUNTY IN EAST CENTRAL NEW YORK... WARREN COUNTY IN EAST CENTRAL NEW YORK... AT 234 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING...AROUND HALF INCH HAIL...WINDS AROUND 50 MPH...FREQUENT LIGHTNING...AND HEAVY RAIN. THIS STORM WAS LOCATED NEAR WELLS...OR ABOUT 14 MILES SOUTH OF SPECULATOR...AND MOVING EAST AT 35 MPH. THE THUNDERSTORM WILL BE NEAR... WELLS AND SACANDAGA CAMPGROUND BY 240 PM EDT DAY CENTER BY 300 PM EDT AROUND ONE HALF INCH OF RAIN WILL FALL IN A SHORT AMOUNT OF TIME...WHICH WILL CAUSE PONDING OF WATER ON ROADS AND POOR DRAINAGE LOCATIONS. JPV
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE ALBANY NY
304 PM EDT WED JUL 21 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0154 PM TSTM WND DMG PITTSTOWN 42.84N 73.48W
07/21/2010 RENSSELAER NY EMERGENCY MNGR
TREES DOWN ON COOKS BURO RD. POWER OUTAGES ALSO REPORTED.
0225 PM HAIL WILLIAMSTOWN 42.71N 73.20W
07/21/2010 E0.50 INCH BERKSHIRE MA TRAINED SPOTTER
0229 PM TSTM WND GST NORTH ADAMS 42.69N 73.11W
07/21/2010 M43.00 MPH BERKSHIRE MA ASOS
0230 PM HAIL NORTH ADAMS 42.69N 73.11W
07/21/2010 E0.25 INCH BERKSHIRE MA TRAINED SPOTTER
0230 PM HAIL NORTH ADAMS 42.69N 73.11W
07/21/2010 E0.25 INCH BERKSHIRE MA DEPT OF HIGHWAYS
0230 PM LIGHTNING NORTH ADAMS 42.69N 73.11W
07/21/2010 BERKSHIRE MA TRAINED SPOTTER
CORNER OF LIBERTY STREET AND ORCHARD STREET TRANSFORMER
HIT BY LIGHTNING.
&&
KGM/RAGThe Albany radar (KENX), 92 km away, was scanning. The volume nearest the first event began at 19:06 UTC.
6 thunderstorm wind, 5 hail, 4 tornado, 1 funnel cloud. Local standard time, as filed.
Numerous trees and wires were downed by straight line winds from a thunderstorm. Damage was observed along Main Street in Sharon, along Fairfield Road and on West Cornwall Road near Route 7.
Nickel to quarter size hail was reported during a thunderstorm in Sharon.
Multiple trees were reported down in Cornwall, including a large tree on Route 7, due to strong thunderstorm winds.
Trees were reported down along Route 4 in West Goshen due to strong thunderstorm winds.
Hail ranging from a half an inch up to golf ball size was reported during a thunderstorm throughout the Town of Litchfield.
Hail ranging in size from a half of an inch up to quarter size was reported during a thunderstorm in the Town of Torrington.
A funnel cloud was observed from the Village Green in Litchfield.
Golf ball size hail was reported during a thunderstorm in East Litchfield.
Wires were reported down on a car in East Litchfield due to strong thunderstorm winds.
A supercell that moved across Litchfield County during the afternoon hours produced a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In East Litchfield, tornadic damage occurred in a line across East Litchfield Road and East Litchfield Road South.
Trees were reported down on Route 63 in Litchfield heading toward Morris due to strong thunderstorm winds.
A supercell that moved across Litchfield County during the afternoon hours produced a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In Thomaston, tornadic damage occurred just west of Fenn Road.
Penny to nickel size hail was reported during a thunderstorm in Harwinton.
A supercell that moved across Litchfield County during the afternoon hours produced a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In Thomaston, tornadic damage occurred near D Welton Way.
A supercell that moved across Litchfield County during the afternoon hours produced a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In Terryville, tornadic damage occurred along Prospect Street and Route 6. Damage was reported to a gas station awning on Route 6.
Trees and wires were reported down in Thomaston due to strong thunderstorm winds. Some wires were down on cars. Also, fires were reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Connecticut in 2010Every state in 2010This day in weather historyThe tornado archive for Connecticut, 2010Warnings in Connecticut, July 2010
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: 248292, 251479, 251489, 251490, 251480, 251483, 248311, 251584, 251607, 248282, 251606, 248283, 251603, 248285, 248288, 251604.