A strong low and disturbance in the upper levels of the atmosphere moved southeast across southern Quebec, impacting portions of eastern New York and western New England on Wednesday, July 26th. The disturbance and its associated surface cold front focused scattered strong to severe thunderstorms across eastern New York and western New England during the afternoon hours.
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 strong low and disturbance in the upper levels of the atmosphere moved southeast across southern Quebec, impacting portions of eastern New York and western New England on Wednesday, July 26th. The disturbance and its associated surface cold front focused scattered strong to severe thunderstorms across eastern New York and western New England during the afternoon hours. The airmass across the region had ample low level moisture present and became unstable with the heating of the day. The strong disturbance aloft helped intensify the thunderstorms. The thunderstorm activity evolved into a squall line from the Capital District south and east into the eastern Catskills, mid-Hudson Valley, Taconics, and western New England. Numerous wind damage reports occurred with a microburst just east of the Albany International Airport.
Microburst: A downburst that has an affected outflow area of less than 2.5 miles wide.
Downburst: A strong down draft, initiated by a thunderstorm, that induces an outburst of damaging straight line winds on or near the ground.
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 26, 10:32 AM EST, 2 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ALBANY NY 1132 AM EDT TUE JUL 26 2011 .SYNOPSIS... AN UPPER LEVEL DISTURBANCE WILL BRING SCATTERED SHOWERS AND SOME STRONG THUNDERSTORMS TO THE REGION TODAY. HIGH PRESSURE WILL BUILD IN FROM THE GREAT LAKES REGION TUESDAY NIGHT INTO WEDNESDAY WITH DRY WEATHER AND SEASONABLE TEMPERATURES. THE HIGH WILL MOVE OFF THE NEW ENGLAND COAST WEDNESDAY NIGHT INTO THURSDAY...AS A WARM FRONT WILL BE APPROACHING FROM THE OHIO VALLEY. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... AS OF 1130 AM...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR OUR ENTIRE AREA THROUGH 700 PM. THERE IS THE POTENTIAL FOR THUNDERSTORMS TO BECOME STRONG TO LOCALLY SEVERE...PRODUCING WIND GUSTS TO 60 MPH AND LARGE HAIL TO ONE INCH. WILL UPDATE THE GRIDS ACCORDINGLY. ********PREVIOUS NEAR TERM DISCUSSION******** AS OF 945 AM...CONVECTION WAS ALREADY DEVELOPING OVER LAKE ONTARIO AND COMING ASHORE ACROSS THE TUG HILL. OUR LOW LEVEL STRATUS DECK IS MIXING OUT ALLOWING FOR SURFACE HEATING TO START. DEWPOINTS ACROSS THE REGION THIS MORNING ARE GENERALLY INTO THE LOWER AND MID 60S WHICH WILL BE THE KEY FACTOR TO OUR DEGREE OF INSTABILITY THIS AFTERNOON. MODIFIED 12Z SOUNDINGS SUGGEST SBCAPES CLIMB TO BETWEEN 1000-1500 J/KG. MORE IMPRESSIVE IS THE WIND FIELD AS 500MB JET STREAK APPROACHES FROM LOWER ONTARIO PROVIDENCE. EVEN MORE OF NOTE PER THE H2O VAPOR LOOP IS A STRONGER MID-UPPER LEVEL JET STREAK DIVING SOUTHEAST ACROSS LOWER MICHIGAN AND INTO WESTERN NY /ENHANCED LEFT FRONT QUAD/. IN ADDITION...THE 500MB TEMPS ARE EXPECTED TO DROP BACK TOWARD -13C ACROSS THE DACKS AND LAKE GEORGE SARATOGA REGION WITH AROUND -10C FOR THE SOUTHERN PORTIONS OF THE CWA. MID LEVEL LAPSE RATES ARE PROGGED TO BE BETWEEN 6.5-7 C/KM WITH STEEPER VALUES IN THE LOWER LEVELS. RUC13 WET BULB ZERO HEIGHTS ALSO DROP BACK TO LESS THAN 10K FEET THIS AFTERNOON. SO THE POTENTIAL FOR DAMAGING WIND GUSTS AND HAIL ARE THERE...YET LOCAL HAIL STUDIES SUGGEST HAIL SIZE MIGHT JUST FALL SHORT OF SEVERE CRITERIA /1"/ LIKELY DUE TO THE LACK OF CAPE- DENSITY. WE HAVE INITIATED AN RSO FOR GOES EAST TO START AFTER 14Z AND WE WILL MONITOR RADAR TRENDS VERY CLOSELY. MAIN UPDATE WAS TO HOURLY VALUES AND THE REMAINDER OF THE GRIDS ARE IN EXCELLENT SHAPE. AS OF 645 AM EDT...THE LOW STRATUS CLOUDS CONTINUE TO BE OVER ERN NY AND WRN NEW ENGLAND. THE LATEST OBSERVATIONS/SHORT TERM GUIDANCE TRENDS INDICATE DRYING FROM THE NORTH AND WEST WILL WORK INTO THE AREA BTWN 13Z-16Z. SOME ISOLD SHOWERS HAVE DEVELOPED OVER THE SOUTHEASTERN PERIPHERY OF THE FCST AREA AHEAD OF THE WEAK COLD/OCCLUDED FRONT. WE PLACED A FEW HOURS OF ISOLD SHOWERS THERE. THE STRONG UPPER LEVEL TROUGH IS APPROACHING FROM SOUTHEASTERN ONTARIO/QUEBEC. THE LATEST NAM CONTINUES TO SHOW MORE INSTABILITY THAN THE GFS...WHICH MAY SPARK SOME SEVERE THUNDERSTORMS. OUR THINKING CONTINUES FOR A MINOR EVENT...ESPECIALLY WHERE MORE HEATING OCCURS...WHICH APPEARS TO BE FROM THE CAPITAL REGION...BERKSHIRES...AND NRN CATSKILLS SOUTH AND EAST. PREVIOUS NEAR TERM FOLLOWS... AS OF 400 AM EDT...THE WATER VAPOR LOOP THIS MORNING SHOWS A POTENT CLOSED H500 UPPER LEVEL TROUGH DIVING S/SE ACROSS SOUTHEASTERN ONTARIO TOWARDS UPSTATE NY AND NEW ENGLAND FOR TODAY. THIS UPPER LEVEL TROUGH IS ASSOCIATED WITH H500 AIR OF -14C TO -15C THAT WILL ENCROACH NRN NY. WE ARE EXPECTING THE STRATUS TO BURN OFF LATER THIS MORNING WITH SOME CLEARING. THE STRONG CYCLONIC VORTICITY ADVECTION WITH THE UPPER LEVEL TROUGH WILL FOCUS SOME SCT STRONG TO POTENTIALLY SEVERE THUNDERSTORMS. THE CONVECTIVE INGREDIENTS ARE BETTER TODAY COMPARED TO YESTERDAY WITH SFC DESTABILIZATION EXPECTED IN THE LATE MORNING/AFTERNOON. THE MID LEVEL LAPSE RATES WILL STEEPEN TO 6-6.5C/KM WITH WET BULB ZERO HEIGHTS LOWERING TO 9-11 KFT AGL OVER THE REGION. THE 0-6 KM DEEP SHEAR VALUES INCREASE TO 40-50 KTS. THE SHEAR IS TOP HEAVY ABOVE THE BOUNDARY LAYER. THE BIGGEST DIFFERENCE BTWN THE NAM AND GFS IS THE AMOUNTS OF SFC BASED INSTABILITY THAT MAY BE REALIZED. THE GFS HAS GENERALLY 500-1000 J/KG IN PLACE DURING THE PM OVER ERN NY AND WRN NEW ENGLAND...WHILE THE NAM HAS 500-1500 J/KG WITH SOME POCKETS UP TO 2000 J/KG. THE HIGHER AMOUNTS ON THE NAM ARE BEING FORECAST WITH SFC DEWPTS IN THE U60S TO L70S ! WE ARE EXPECTING SFC DEWPTS MAINLY IN THE LOWER TO M60S. THE UPPER JET DYNAMICS LOOK MORE FAVORABLE WITH PORTIONS OF ERN NY AND WRN NEW ENGLAND NEAR THE RIGHT REAR QUADRANT OF A H250 JET STREAK OF 80-100 KTS. FINALLY...A LOOK AT THE MAGLENTA CONDITIONAL SEVERE WEATHER INDEX IMPLIES A MINOR SEVERE EVENT /LESS THAN 10 SEVERE REPORTS/ WITH THE FOLLOWING NAM/GFS MODEL SOUNDING PARAMETERS UTILIZED: CAPE = 1000 J/KG MAX SOUNDING WINDS = 90 KTS EHI = 1.0 STORM SPEED - 30 KTS SRH (0-3 KM) = 100 (M/S)2 THE LOCAL HAIL INDEX IMPLIES HAIL STONES UP TO NICKEL TO QUARTER SIZE MAY BE POSSIBLE WITH EQUILIBRIUM LEVELS OF 30 KFT AGL. THE MODEL SOUNDINGS ALSO DO HINT AT AN INVERTED-V SIGNATURE FOR THE POTENTIAL OF DAMAGING WINDS WITH ANY STRONG TO SEVERE CONVECTION TOO. WE WILL INCLUDE SMALL HAIL AND GUSTY WINDS IN THE GRIDDED AND TEXT FORECASTS FOR THE ENTIRE FCST AREA. ORGANIZED MULTICELL CONVECTION WILL LIKELY FORM INTO A LINE WITH POSSIBLY SOME BOWING SEGMENTS. THE 00Z NCEP 4KM WRF-NMM BASE REF RUN FOR SPC SHOWS A FAIRLY STRONG LINE OF CONVECTION SWEEPING ACROSS THE REGION DURING THE MID TO LATE PM...ESPECIALLY FROM THE CAPITAL REGION SOUTH AND EAST WHERE THE MOST HEATING AND DESTABILIZATION WILL LIKELY OCCUR. WE WILL MENTION THE POSSIBILITY OF STRONG TO SEVERE THUNDERSTORMS IN THE HWOALY PRODUCT. MAX TEMPS WILL RANGE FROM THE LOWER TO MID 80S IN THE VALLEYS...AND U60S TO U70S OVER THE MTNS. && .SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY NIGHT/... TONIGHT...THE UPPER LEVEL LOW MOVES DOWNSTREAM...AND ITS ASSOCIATED SFC TROUGH/COLD FRONT PASSES ACROSS NEW ENGLAND. WEAK COLD AIR ADVECTION OCCURS IN THE WAKE OF THE UPPER LEVEL DISTURBANCE WITH H850 TEMPS FALLING TO 11 TO 13C OVER THE REGION. THE SKIES WILL GRADUALLY CLEAR WITH HIGH PRESSURE BUILDING IN FROM THE GREAT LAKES REGION AND OHIO VALLEY. LOWS WILL GENERALLY RANGE FROM THE U50S TO L60S IN THE VALLEYS WITH 50-55F RANGE READINGS OVER THE MTNS. WEDNESDAY...THIS DAY WILL FEATURE LOTS OF SUNSHINE AS LOW AND MID LEVEL HEIGHTS RISE OVER THE REGION. H850 TEMPS WILL BE IN THE 12-14C RANGE WITH DECENT MIXING FROM H850. THE SFC HIGH WILL BUILD IN OVER WRN NY AND PA DURING THE PM. HUMIDITY LEVELS WILL BE VERY COMFORTABLE FOR LATE JULY. MAX TEMPS WILL BE IN THE 80 TO 85F RANGE IN THE VALLEYS...AND 70S OVER THE HIGHER TERRAIN. WEDNESDAY NIGHT...THE SFC HIGH CRESTS OVER NY AND NEW ENGLAND. SOME HIGH CLOUDS MAY INCREASE WELL AFTER MIDNIGHT WITH THE INCREASING LOW AND MID LEVEL WARM ADVECTION. WE STILL EXPECT SOME RADIATIONAL COOLING THROUGH THE THIN CIRRUS THAT MAY MOVE IN WITH TEMPS MAINLY IN THE 50S TO NEAR 60F IN THE HUDSON RIVER VALLY. THURSDAY-THURSDAY NIGHT...THE NAM IS AN OUTLIER RACING WARM ADVECTION SHOWERS AND THUNDERSTORMS IN THE FCST AREA AHEAD OF A WARM FRONT OVER THE OH VALLEY ON THU. THE GFS/UKMET/ECMWF ARE SLOWER WITH THE ISENTROPIC LIFT...AND THE DEEPER SYNOPTIC FORCING DURING THE DAY. WE KEPT IT MAINLY DRY DURING THE DAY THU WITH JUST A SLIGHT CHC OF A SHOWER OR THUNDERSTORM WEST OF THE HUDSON RIVER VALLEY. WE INCREASED THE POPS OVERNIGHT WITH PERHAPS SOME NOCTURNAL SHOWERS AND THUNDERSTORMS. HUMIDITY LEVELS WILL BE ON THE INCREASE TO CLOSE THE WEEK. MIN TEMPS THU NIGHT WILL BE IN THE M60S TO L70S. && .LONG TERM /FRIDAY THROUGH MONDAY/... MORE HOT AND HUMID WEATHER ON TAP AS WE HEAD INTO THE THE WEEKEND. BROAD RIDGING OVER MUCH OF THE CONUS WITH ZONAL FLOW ACROSS THE NORTHERN TIER. WARM FRONT SHOULD BE LIFTING TO OUR NORTH AND EAST FRIDAY MORNING ALLOWING THE HEAT AND HUMIDITY TO RETURN. A COLD FRONT WILL APPROACH FROM THE NORTHWEST/GREAT LAKES REGION DURING THE DAY AND INDICATIONS ARE THIS BOUNDARY SHOULD MOVE ACROSS THE FRIDAY AS A MID LEVEL TROUGH MOVES THROUGH FAST FLOW AND GIVES IT A PUSH. SCATTERED CONVECTION WOULD BE EXPECTED WITH THE FRONTAL PASSAGE. WITH AREA IN THE WARM SECTOR FRIDAY IT WILL BE HOT WITH DEW POINTS ON THE RISE...INTO THE MID 60S TO LOWER 70S...MAKING FOR UNCOMFORTABLE CONDITIONS. HEAT INDICES MAY APPROACH 100 DEGREES IN PORTIONS OF THE MID HUDSON VALLEY DURING THE AFTERNOON. DESPITE THE COLD FRONTAL PASSAGE ABOVE NORMAL TEMPERATURES ARE EXPECTED INTO EARLY NEXT WEEK RUNNING ABOUT 5 DEGREES ABOVE NORMAL. HOWEVER HUMIDITY LEVELS WILL BE LOWER WITH DEW POINTS DROPPING BACK. && .AVIATION /16Z TUESDAY THROUGH SATURDAY/... MVFR-IFR CONDITIONS OCCURRING ACROSS LOCAL AREA. SOUTHERLY WINDS HAVE KEPT FOG FROM DEVELOPING. LOW LEVEL CLOUDS WILL MOVE OFF TO THE EAST AND BREAK UP BY MID MORNING INBETWEEN THE EXITING FRONTAL BOUNDARY AND THE APPROACHING UPPER TROUGH. THE UPPER TROUGH AND ITS ASSOCIATED COLD POOL WILL MOVE OVER REGION DURING THE DAY AND ALONG WITH HEATING SCATTERED SHOWERS AND THUNDERSTORMS WILL OCCUR. SOME THUNDERSTORMS WILL PRODUCE GUSTY WINDS AND SMALL HAIL WITH SEVERE THUNDERSTORMS POSSIBLE. INDICATED CONVECTIVE THREAT IN TAFS WITH A VICINITY SHOWER AND CB. VFR CONDITIONS ARE EXPECTED TO DOMINATE HOWEVER MVFR-IFR CONDITIONS WILL OCCUR WITH STORMS. WITH LOSS OF HEATING STORMS AND CLOUDS WILL DISSIPATE. MVFR FOG IS EXPECTED TO FORM TONIGHT AS WINDS WEAKEN AND SKIES CLEAR WITH IFR FOG POSSIBLE AT KGFL. OUTLOOK... WED-WED NIGHT...VFR. NO SIG WX. THU...VFR. SLIGHT CHC SHRA/TSRA IN THE AFTN. THU NIGHT-FRI...MAINLY VFR. CHC SHRA/TSRA WITH MVFR POSSIBLE. SAT...VFR. NO SIG WX. && .FIRE WEATHER... AN UPPER LEVEL DISTURBANCE WILL BRING SCATTERED SHOWERS AND SOME STRONG THUNDERSTORMS TO THE REGION TODAY. HIGH PRESSURE WILL BUILD IN FROM THE GREAT LAKES REGION TUESDAY NIGHT INTO WEDNESDAY WITH DRY WEATHER AND SEASONABLE TEMPERATURES. THE HIGH WILL MOVE OFF THE NEW ENGLAND COAST WEDNESDAY NIGHT INTO THURSDAY...AS A WARM FRONT WILL BE APPROACHING FROM THE OHIO VALLEY. THE RH VALUES WILL LOWER TO 50 TO 65 PERCENT THIS AFTERNOON...THEN HAVE AN EXCELLENT RECOVERY TO 85 TO 100 PERCENT WEDNESDAY MORNING. THEY WILL LOWER TO 45 TO 60 PERCENT BY THE LATE AFTERNOON. THE WINDS WILL SHIFT FROM THE SOUTH OR SOUTHWEST TO THE WEST NORTHWEST THIS AFTERNOON AT 10 TO 20 MPH. THEY WILL LIGHTEN FROM THE WEST NORTHWEST OVERNIGHT TO 5 TO 10 MPH. NORTHWEST WINDS WILL PREVAIL ON WEDNESDAY AT 10 TO 15 MPH. && .HYDROLOGY... NO HYDRO PROBLEMS ARE EXPECTED ON THE MAIN STEM RIVERS THE NEXT 5 DAYS. THE STRONG UPPER LEVEL DISTURBANCE WILL BRING SHOWERS AND THUNDERSTORM INTO EARLY THIS EVENING WITH RAINFALL AMOUNTS RANGING FROM A TENTH TO A HALF AN INCH. DRY WEATHER WILL RETURN TUESDAY NIGHT INTO THURSDAY...BEFORE A MORE HUMID AIR MASS RETURNS TO CLOSE TO THE WORK WEEK WITH INCREASING CHANCES OF SHOWERS AND THUNDERSTORMS. 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. && SYNOPSIS...WASULA NEAR TERM...HWJIV/BGM/WASULA SHORT TERM...WASULA LONG TERM...IAA AVIATION...IAA FIRE WEATHER... HYDROLOGY...WASULA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ALBANY NY 1137 AM EDT TUE JUL 26 2011 CTZ001-013-MAZ001-025-NYZ032-033-038>043-047>054-058>061-063>066- 082>084-VTZ013>015-271100- 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- 1137 AM EDT TUE JUL 26 2011 ...SEVERE THUNDERSTORM WATCH 686 IN EFFECT UNTIL 7 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...WEDNESDAY THROUGH MONDAY. THERE IS A CHANCE OF THUNDERSTORMS THURSDAY NIGHT INTO FRIDAY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1128 AM EDT TUE JUL 26 2011
NYZ038>040-261600-
MONTGOMERY NY-SOUTHERN FULTON NY-SOUTHERN HERKIMER NY-
1128 AM EDT TUE JUL 26 2011
...A STRONG THUNDERSTORM IN
MONTGOMERY COUNTY IN EASTERN NEW YORK...
FULTON COUNTY IN EASTERN NEW YORK...
HERKIMER COUNTY IN EASTERN NEW YORK...
AT 1123 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING...WINDS AROUND 50 MPH...AND HEAVY
RAIN. THIS STORM WAS LOCATED 9 MILES WEST OF FRANKFORT...OR ABOUT
OVER UTICA...AND MOVING EAST AT 30 MPH.
THE THUNDERSTORM WILL BE NEAR...
FRANKFORT AND CEDARVILLE BY 1140 AM EDT
ILION...MOHAWK AND HERKIMER BY 1145 AM EDT
JORDANVILLE BY 1155 AM EDT
6 MILES SOUTH OF LITTLE FALLS BY NOON EDT
THIS IS A DANGEROUS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
LAT...LON 4311 7517 4305 7471 4286 7477 4289 7487
4286 7489 4292 7522 4306 7522
TIME...MOT...LOC 1528Z 283DEG 28KT 4302 7520
LFM/HEA/KGMSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1140 AM EDT TUE JUL 26 2011
NYZ042-043-261615-
NORTHERN WASHINGTON NY-NORTHERN WARREN NY-
1140 AM EDT TUE JUL 26 2011
...A STRONG THUNDERSTORM IN
WASHINGTON COUNTY IN EAST CENTRAL NEW YORK...
WARREN COUNTY IN EAST CENTRAL NEW YORK...
AT 1138 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING...WINDS GUSTING TO 50
MPH...AND HEAVY RAIN. THIS STORM WAS LOCATED NEAR HAGUE...OR ABOUT
11 MILES NORTHWEST OF WHITEHALL...AND MOVING EAST AT 20 MPH.
THE THUNDERSTORM WILL BE NEAR...
HAGUE AND HULETTS LANDING BY 1145 AM EDT
7 MILES SOUTH OF ROGERS ROCK CAMPGROUND BY 1150 AM EDT
THIS IS A DANGEROUS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND EASTERN NEW YORK AND SOUTHERN VERMONT.
LAT...LON 4380 7337 4379 7335 4377 7334 4372 7337
4369 7340 4365 7342 4362 7341 4361 7353
4370 7363 4380 7356 4381 7345 4381 7337
TIME...MOT...LOC 1539Z 273DEG 15KT 4370 7354
KGM/HEA/LFMThe Albany radar (KENX), 94 km away, was scanning. The volume nearest the first event began at 17:34 UTC.
14 thunderstorm wind. Local standard time, as filed.
Trees and wires were reported down on Vosburg Street in Ilion due to strong thunderstorm winds.
A National Weather Service survey team verified a microburst centered at Computer Drive West and Wolf Road in Colonie. Damage was confined to downed trees, with no damage to structures. A few trees were toppled or snapped. Mostly branches were downed.
Trees were reported down in Sharon Springs due to strong thunderstorm winds, with some minor flooding also reported on Beechwood Road.
Trees were reported down in Seward due to strong thunderstorm winds.
Many evergreen trees were reported uprooted and snapped in Middleburgh due to strong thunderstorm winds.
Trees and wires were reported down approximately 1 mile east of Schodack Center due to strong thunderstorm winds.
Trees were reported down on powerlines in Nassau due to strong thunderstorm winds.
Trees and wires were reported down in Stephentown due to strong thunderstorm winds.
Trees and wires were reported down on Routes 20 and 22 in Lebanon Springs due to strong thunderstorm winds.
A tree was reported down on a vehicle on Route 22 in Lebanon Springs due to strong thunderstorm winds.
Trees and powerlines were reported down in Woodstock due to strong thunderstorm winds.
A tree was reported down blocking traffic on Route 375 in Woodstock due to strong thunderstorm winds.
A large tree was reported down blocking the southbound entrance to the Taconic State Parkway at the Route 199 ramp in Milan due to strong thunderstorm winds.
Trees and wires were reported down in Lithgow due to strong thunderstorm winds. Vehicles were reported trapped due to an impassable road, Route 44.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2011Every state in 2011This day in weather historyWarnings in New York, July 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: 333115, 333116, 333117, 333118, 333119, 333122, 333158, 333129, 333133, 333141, 333121, 333156, 333162, 333146.