A strong cold front and disturbance in the upper levels of the atmosphere moved across the region Sunday afternoon and evening, August 21st. There were two distinct rounds of strong to severe thunderstorms.
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 cold front and disturbance in the upper levels of the atmosphere moved across the region Sunday afternoon and evening, August 21st. There were two distinct rounds of strong to severe thunderstorms. The first occurred during the late morning and early afternoon hours, and the second during the late afternoon into early evening. Mainly damaging winds occurred with the severe thunderstorms.
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 Aug 21, 9:28 AM EST, 1 hour 32 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ALBANY NY 1028 AM EDT SUN AUG 21 2011 .SYNOPSIS... A COLD FRONT WILL APPROACH OUR REGION FROM THE EASTERN GREAT LAKES REGION...AND THE SAINT LAWRENCE RIVER VALLEY...AND CROSS OUR REGION THIS AFTERNOON AND EVENING. SHOWERS AND THUNDERSTORMS WILL OCCUR AHEAD AND ALONG THE FRONT WITH STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON AND EARLY THIS EVENING. HIGH PRESSURE WILL BEGIN TO BUILD INTO OUR AREA ON MONDAY WITH FAIR AND DRIER WEATHER INTO THE MID WEEK. && .NEAR TERM /THROUGH TONIGHT/... AS OF 10 AM EDT...AN ACTIVE SEVERE WEATHER DAY LOOKS LIKELY THIS AFTERNOON WITH MULTIPLE BANDS OF SHOWERS AND THUNDERSTORMS TO IMPACT THE FORECAST AREA THIS AFTERNOON INTO THE EARLY EVENING. THE INITIAL CONVECTION IS ASSOCIATED WITH A WEAK MID LEVEL VORT MAX AND SOME LOW AND MID LEVEL THERMALS ADVECTION. THE LATEST NAM SHOWS SOME ELEVATED INSTABILITY WITH SHOWALTER VALUES OF 0 TO -2C OVER THE SOUTHERN ADIRONDACK PARK. WE HAVE HAD A FEW STRONG THUNDERSTORMS MOVE ACROSS HERKIMER AND HAMILTON COUNTIES. WE HAVE HAVE RETOOLED THE POP AND WX TRENDS TO ADDRESS THIS THREAT. OUR HIRES WRF BASE REF PRODUCT SEEMS TO HAVE A GOOD HANDLE ON THINGS AT THIS POINT...AND IT SHOWS A RATHER INTENSE LINE OF CONVECTION FORMING TOWARDS 20Z...AND CROSSING THE FORECAST AREA BY 0100Z. THE 12Z KALB SOUNDING SHOWS ONLY 0-6 KM SHEAR VALUES OF 24 KTS NOW...BUT WE EXPECT THE DEEP SHEAR TO INCREASE TO 40-50 KTS BY THE LATE PM WITH A MULTICELL LINE...AND PERHAPS SOME SUPERCELL STRUCTURES WITH MLCAPE/SBCAPES GENERALLY 1000-2000 J/G OVER THE FCST AREA. THE 12Z SOUNDING ALL SHOWS H850-500 LAPSE RATES OF 6.8 C/KM WITH A WET BULB ZERO HEIGHT OF 10.3 KFT. THERE IS LOW-LEVEL VEERING IN THE BOUNDARY LAYER...BUT WITH THE STRONG CYCLONICALLY CURVED MID/UPPER LEVEL JET STREAK APPROACHING LATER TODAY WE BELIEVE THE PRIMARY SEVERE THREAT WILL BE WIND...WITH SOME HAIL. THE LATEST MAGLENTA SEVERE WEATHER INDEX CAME OUT WITH A MAJOR SEVERE WEATHER EVENT POSSIBLE. THIS IS A CONDITIONAL POINT INDEX FROM PAST COMET RESEARCH. HERE ARE THE PARAMETERS INPUTTED: CAPE = 1500 J/KG MAX SOUNDING WINDS = 65 EHI = 1.0 SRH (0-3 KM) = 150 (M/S)2 STORM SPEED = 30 KTS WE WILL CONTINUE TO MONITOR THE MESOSCALE TRENDS. THE ONE LIMITER ON THE AREAL EXTENT OF TODAYS CONVECTION WOULD BE THE CLOUD COVER. THERE BREAKS IN THESE BANDS...AND THE UPPER LEVEL DYNAMICS BECOME MORE IMPRESSIVE BY THE MID PM...INTO THE EARLY EVENING. PREVIOUS NEAR TERM... AS OF 630 AM EDT...MID AND HIGH CLOUDS HAVE OVERSPREAD MUCH OF THE FA AND WERE STARTING TO LOWER AND THICKEN WITH STILL A FEW BREAKS IN THE OVC ACRS FAR SE PTNS OF THE FA. TEMPS AT 6 AM WERE GENERALLY IN THE MID 50S TO LOWER 60S WITH JUST A FEW LIGHT SHOWERS ACROSS FAR NW PTNS OF FA. HAVE MADE VERY FEW CHANGES TO FORECAST WITH THIS UPDATE OTHER THAN TO ADJUST SOME GRIDS TO BETTER FIT CURRENT TRENDS. AREA OF CONVECTION CURRENTLY ACROSS CENTRAL AND WESTERN NY...SHOULD BE ARRIVING ACRS NW THIRD OF FA BTWN 12Z AND 13Z AND CENTRAL THIRD OF FA BTWN 13Z AND 15Z. FAR SE PTN OF FA MAY END UP REMAINING DRY TIL LATE THIS MRNG. FOR TODAY...THERE IS THE POTENTIAL FOR SOME STRONG TO SEVERE THUNDERSTORMS ESPECIALLY FROM MID MORNING THROUGH THIS AFTERNOON AHEAD OF A STRONG COLD FRONT WHICH IS EXPECTED TO DROP SOUTHEAST FROM THE EASTERN GREAT LAKES THIS MORNING REACHING THE HUDSON VALLEY LATE IN THE DAY. ML MUCAPES REACH 1000-2500 J/KG THIS AFTERNOON... H7-H5 LAPSE RATE NOT OVERLY IMPRESSIVE 5.5 TO 6.5 C/KM...0-3 KM HELICITY 100-300 M2/S2 WITH HIGHEST VALUES ON GFS AND NAM TOWARDS 00Z ACROSS THE SE TWO THIRDS OF THE FA...AND CYCLONICALLY CURVED H5 JET OF 60 TO 70 KNOTS MOVING INTO FA INDICATE THAT THE POTENTIAL CERTAINLY EXISTS FOR SEVERE CONVECTION...HOWEVER HEATING AND INSTABILITY MAY BE SIGNIFICANTLY INHIBITED BY CLOUD COVER. WILL CONTINUE TO HIGHLIGHT SLIGHT RISK POTENTIAL IN HWO AND HAVE PLACED ENHANCED WORDING IN THE GRIDS STARTING AROUND 14Z MENTIONING HEAVY RAIN...SMALL HAIL AND GUSTY WINDS. GIVEN HELICITY AND BUFKIT HODOGRAPHS THERE ALSO IS THE POSSIBILITY OF SOME RIGHT TURNING SUPERCELL STORMS PROVIDED ENOUGH INSTABILITY OCCURS AS WELL AS LARGE HAIL WITH WBZ HEIGHTS GENERALLY 9-12 KFT THROUGH THIS AFTERNOON. LOCAL SEVERE WEATHER CHECKLIST POINTS TO POTENTIAL FOR ISOLATED TO CHANCE SVR AT KGFL...KPOU AND KALB WITH POSSIBILITY FOR SOME ROTATION IN CELLS MID TO LATE AFTERNOON. HIRES COMPOSITE REFLECTIVITY ALSO INDICATES THAT THERE MAYBE SEVERAL LINES OF STORMS WITH THE POSSIBILITY FOR TRAINING CELLS ACROSS CWA STARTING LATE THIS MORNING AND NOT ENDING ACROSS EASTERN AREAS UNTIL AROUND MIDNIGHT. THUS THUNDERSTORMS WILL LIKELY LINGER THROUGH THIS EVENING ESPECIALLY ACROSS EASTERN AREAS UNTIL THE COLD FRONT HAS CLEARED THE FA. WILL KEEP MENTION OF THUNDER THROUGH AROUND MIDNIGHT WITH ENHANCED WORDING THROUGH MID EVENING AND THEN JUST CHANCE OF SHOWERS AFTER MIDNIGHT. TOTAL RAINFALL AMOUNTS THROUGH THIS EVENING ARE GENERALLY EXPECTED TO BE BETWEEN THREE QUARTERS OF AN INCH AND AN INCH AND A HALF WITH LOCALLY HIGHER AMOUNTS IN TRAINING CELLS. EXPECT HIGHS TODAY TO BE IN THE MID 70S TO LOWER 80S WITH LOWS TONIGHT EXPECTED TO BE IN THE MID 50S TO MID 60S. && .SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/... FOR MONDAY INTO MONDAY NIGHT EXPECT HIGH PRESSURE TO BUILD INTO THE REGION AT THE SURFACE FROM THE OHIO VALLEY. HOWEVER UPPER TROUGH WITH SEVERAL VORT LOBES ROTATING AROUND IT AND GOOD COLD POOL ALOFT WILL RESULT IN WIDELY SCATTERED TO SCATTERED SHOWERS MAINLY ACROSS THE NORTHERN HALF OF THE FORECAST AREA THROUGH MONDAY EVENING. THERE ALSO MAYBE SOME LAKE ENHANCEMENT TO THE SHOWERS EAST OF LAKE ONTARIO AS H8 TEMPS COOL TO +6 TO +8 C BY TUESDAY MORNING. EXPECT HIGHS ON MONDAY TO BE IN THE UPPER 60S TO UPPER 70S IN MOST PLACES WITH LOWS MONDAY NIGHT IN THE LOWER 40S TO LOWER 50S. EXPECT DRY WEATHER TUESDAY AND TUESDAY NIGHT AS A LARGE RIDGE OF HIGH PRESSURE BUILDS ACROSS THE MIDDLE ATLANTIC REGION AND THE NORTHEAST. HIGHS ON TUESDAY ARE EXPECTED TO BE IN THE 70S WITH LOWS TUESDAY NIGHT IN THE MID 40S TO MID 50S. && .LONG TERM /WEDNESDAY THROUGH SATURDAY/... WED...MODELS IN DECENT AGREEMENT IN HIGH PRESSURE RIDGE TRANSLATING ACROSS THE REGION...WITH GENERALLY FAIR WEATHER...AND NEAR SEASONABLE TEMPERATURES AS MAXES REACH AROUND OR JUST OVER 80 IN VALLEYS...AND MID 70S ACROSS HIGHER ELEVATIONS. WED NT-THU NT...MODELS ALSO CONSISTENT WITH COLD FRONTAL PASSAGE LATE THU AFTERNOON OR EVENING...PRECEDED AND ACCOMPANIED BY SCATTERED SHOWERS/TSTMS. WILL KEEP CHC POPS...MAINLY FOR THE AFTERNOON/EVE HOURS...HIGHEST ACROSS NORTHERN AREAS. TEMPS SHOULD REMAIN A BIT ABOVE SEASONAL LEVELS...WITH MAXES REACHING 80-85 IN VALLEYS...AND 75-80 ACROSS HIGHER ELEVATIONS...AND MINS MAINLY IN THE 50S...EXCEPT LOWER 60S IN VALLEYS. FRI-SAT...UNCERTAINTY INCREASES DURING THIS TIME PERIOD...ESP ACROSS SOUTHERN AREAS AS MOISTURE COULD STREAM NORTHWARD FROM THE SOUTHEAST STATES...DEPENDING ON THE EVENTUAL TRACK/EVOLUTION OF IRENE. FOR NOW...WILL INDICATE FAIR CONDITIONS FRI/FRI NT...THEN SOME CLOUDS AND SLIGHT CHC POPS FOR SAT. TEMPS SHOULD BE NEAR...OR PERHAPS A BIT BELOW SEASONAL LEVELS...WITH MAX TEMPS GENERALLY 75-80 IN VALLEYS...AND 70-75 ACROSS HIGHER ELEVATIONS...WITH MINS MAINLY IN THE 50S FOR VALLEYS...AND 40S ACROSS HIGHER ELEVATIONS. && .AVIATION /14Z SUNDAY THROUGH THURSDAY/... A COLD FRONT WILL APPROACH FROM THE GREAT LAKES REGION AND THE ST LAWRENCE RIVER VALLEY LATER THIS AFTERNOON AND EVENING...PRECEDED AND ACCOMPANIED BY SEVERAL BANDS OF SHOWERS AND THUNDERSTORMS...SOME OF WHICH MAY BE QUITE STRONG. THE FRONT WILL THEN MOVE SOUTH AND EAST OF THE REGION LATE SUNDAY NIGHT. EXPECT MAINLY VFR CONDITIONS UNTIL SHOWERS/TSTMS DEVELOP BY LATE MORNING/EARLY THIS AFTERNOON. IT APPEARS THAT SEVERAL BANDS/LINES OF SHOWERS/TSTMS WILL MOVE ACROSS THE TAF SITES THROUGH THIS EVENING...WHICH WILL LIKELY PRODUCE PERIODS OF MVFR/IFR VSBYS. ADDITIONAL SHOWERS/TSTMS MAY LINGER THROUGH 04Z-06Z/MON...ESP AT KPOU. SOME OF THE TSTMS THIS AFTERNOON/EVENING MAY BE ACCOMPANIED BY STRONG WIND GUSTS...AND HAIL...ALONG WITH BRIEFLY VERY HEAVY RAIN WITH BRIEF REDUCTIONS IN VSBYS. ADDITIONAL MVFR/IFR VSBYS/CIGS MAY DEVELOP ONCE THE RAIN ENDS LATE TONIGHT INTO EARLY MON MORNING...ESPECIALLY IF BREAKS IN THE CLOUDS DEVELOP. THE BEST CHANCE FOR THIS APPEARS TO BE AT KGFL...AND KPOU. HOWEVER...OVERALL CONFIDENCE IN THIS ADDITIONAL FOG/LOW CLOUD DEVELOPMENT LATE TONIGHT IS LOW AT THIS TIME. AS FOR WINDS...EXPECT LIGHT/VARIABLE WINDS TO BECOME MAINLY S/SW BY MID MORNING...AT 5-10 KT...WITH WINDS BECOMING MORE SW/W BY LATE AFTERNOON. WINDS WILL BECOME NW SUN NIGHT...AT LESS THAN 8 KT. WINDS WILL BE MUCH STRONGER...AND VARIABLE IN DIRECTION IN AND NEAR ANY SHOWERS AND TSTMS MAINLY THIS AFTERNOON AND TONIGHT. OUTLOOK... MON...VFR. SLIGHT CHC -SHRA KGFL NORTH. TUE-WED...EARLY AM IFR FOG POSSIBLE. OTHERWISE...VFR WITH NO SIG WX. THU...VFR/MVFR...CHC -SHRA/-TSRA. && .FIRE WEATHER... WET FLAG CONDITIONS ARE EXPECTED THROUGH THIS EVENING... A COLD FRONT WILL APPROACH OUR REGION FROM THE GREAT LAKES EARLY THIS MORNING AND CROSS OUR REGION THIS AFTERNOON AND EVENING. SHOWERS AND THUNDERSTORMS WILL OCCUR AHEAD AND ALONG THE FRONT WITH STRONG TO SEVERE THUNDERSTORMS POSSIBLE FROM LATER THIS MORNING THROUGH THIS EVENING. HIGH PRESSURE WILL BEGIN TO BUILD INTO OUR AREA ON MONDAY. RELATIVE HUMIDITY VALUES WILL ONLY DROP TO 50 TO 70 PERCENT TODAY...RECOVER TO 85 TO 100 PERCENT TONIGHT AND DROP TO 35 TO 65 PERCENT ON MONDAY. WINDS WILL BE SOUTH TO SOUTHWEST AT 5 TO 15 MPH WITH GUSTS UP TO 25 MPH TODAY EXCEPT HIGHER GUSTS POSSIBLE IN THUNDERSTORMS...BECOMING NORTHWEST AT 5 TO 10 MPH AFTER MIDNIGHT TONIGHT...AND NORTHWEST AT 10 TO 15 MPH WITH GUSTS 25 TO 30 MPH ON MONDAY. && .HYDROLOGY... FOR TODAY THROUGH THIS EVENING...THE POSSIBILITY EXISTS FOR US TO PICK UP ANOTHER WIDESPREAD THREE QUARTERS OF AN INCH TO AN INCH AND A HALF OF RAIN WITH LOCALLY HIGHER AMOUNTS IN AREAS WHICH HAVE A PROLONGED PERIOD OF CONVECTION. TRAINING OF THUNDERSTORM CELLS IS POSSIBLE AS SEVERAL LINES OF CONVECTION ARE POSSIBLE WITH THE LINES ADVANCING EAST AS THE INDIVIDUAL CELLS MOVE FROM SOUTHWEST TO NORTHEAST AT 30 TO 40 MPH. PWATS INCREASE TO 1.3 TO 1.7 INCHES THIS AFTERNOON WHICH ALSO INDICATES THE POTENTIAL FOR SOME HEAVY RAINFALL. WHILE THIS AMOUNT OF RAIN IS NOT EXPECTED TO HAVE A MAJOR IMPACT ON MOST RIVER BASINS...IT MAY BE ENOUGH TO RESULT IN PONDING OF WATER ON ROADWAYS AND FLOODING OF POORLY DRAINED LOW LYING AREAS AS WELL AS RESULT IN SIGNIFICANT RISES ON CREEKS AND STREAMS. DRIER WEATHER IS EXPECTED FROM MONDAY THROUGH WEDNESDAY WITH JUST SOME WIDELY SCATTERED TO SCATTERED SHOWERS MONDAY INTO EARLY MONDAY EVENING MAINLY ACROSS THE NORTHERN MOUNTAINS. 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...11/WASULA NEAR TERM...11/WASULA SHORT TERM...11 LONG TERM...KL AVIATION...KL/WASULA FIRE WEATHER...11 HYDROLOGY...IAA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ALBANY NY 1050 AM EDT SUN AUG 21 2011 CTZ001-013-MAZ001-025-NYZ032-033-038>043-047>054-058>061-063>066- 082>084-VTZ013>015-221100- 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- 1050 AM EDT SUN AUG 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWESTERN CONNECTICUT...WESTERN MASSACHUSETTS...EAST CENTRAL NEW YORK AND SOUTHERN VERMONT. .DAY ONE...TODAY AND TONIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY THROUGH THIS EVENING. THE THUNDERSTORMS ARE EXPECTED TO FORM ALONG AND AHEAD OF A COLD FRONT WHICH WILL BE MOVING FROM THE EASTERN GREAT LAKES REGION...TO THE HUDSON VALLEY EARLY THIS EVENING...AND MOVE EAST OF WESTERN NEW ENGLAND LATE THIS EVENING. THE THUNDERSTORMS WHICH MAY OCCUR IN SEVERAL LINES HAVE THE POTENTIAL TO PRODUCE DAMAGING WINDS AND LARGE HAIL...AS WELL AS HEAVY DOWNPOURS WHICH MAY RESULT IN PONDING OF WATER ON ROADWAYS AND FLOODING OF POORLY DRAINED LOW LYING AREAS. THE THUNDERSTORMS ARE EXPECTED TO MOVE FROM SOUTHWEST TO NORTHEAST AT 30 TO 40 MPH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. THERE IS A CHANCE OF THUNDERSTORMS LATE THURSDAY INTO THURSDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATER THIS MORNING THROUGH THIS EVENING ACROSS ALL OR PARTS OF EASTERN NEW YORK AND ADJACENT WESTERN NEW ENGLAND. IN ADDITION...SPOTTERS ARE REQUESTED TO SEND MEASURED RAINFALL REPORTS OF 2 INCHES OR MORE AS WELL AS ANY REPORTS OF FLOODING OR NEAR BANKFULL RIVERS OR STREAMS TO THE NATIONAL WEATHER SERVICE VIA THE SEVERE WEATHER REPORT FORM ON THE INTERNET OR BY TELEPHONE.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1034 AM EDT SUN AUG 21 2011
NYZ033-042-211530-
HAMILTON NY-NORTHERN WARREN NY-
1034 AM EDT SUN AUG 21 2011
...A STRONG THUNDERSTORM IN
HAMILTON COUNTY IN EASTERN NEW YORK...
WARREN COUNTY IN EAST CENTRAL NEW YORK...
AT 1031 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING...AROUND HALF INCH HAIL...WINDS
AROUND 45 MPH...FREQUENT LIGHTNING...AND HEAVY RAIN. THIS STORM WAS
LOCATED NEAR MOFFITT BEACH CAMPGROUND...OR ABOUT 6 MILES SOUTHEAST OF
SPECULATOR...AND MOVING NORTHEAST AT 30 MPH.
THE THUNDERSTORM WILL BE NEAR...
JOHNSBURG BY 1105 AM EDT
NORTH CREEK BY 1110 AM EDT
CHESTERTOWN BY 1120 AM EDT
EAGLE POINT CAMPGROUND AND SCAROON MANOR PUBLIC CAMPGROUND BY 1125 AM
EDT
RAINFALL AMOUNTS WILL RANGE FROM A TENTH OF AN INCH TO A HALF INCH.
LAT...LON 4363 7356 4345 7398 4336 7434 4362 7449
4373 7422 4377 7406 4375 7405 4379 7369
TIME...MOT...LOC 1432Z 245DEG 28KT 4351 7430
TAWSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALBANY NY 1114 AM EDT SUN AUG 21 2011 NYZ039-041>043-050-082>084-211615- SOUTHERN WASHINGTON NY-NORTHERN WASHINGTON NY-NORTHERN WARREN NY- SOUTHEAST WARREN NY-SOUTHERN FULTON NY-NORTHERN FULTON NY- SOUTHERN SARATOGA NY-NORTHERN SARATOGA NY- 1114 AM EDT SUN AUG 21 2011 ...A STRONG THUNDERSTORM IN WASHINGTON COUNTY IN EAST CENTRAL NEW YORK... WARREN COUNTY IN EAST CENTRAL NEW YORK... FULTON COUNTY IN EASTERN NEW YORK... SARATOGA COUNTY IN EAST CENTRAL NEW YORK... AT 1111 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING...WINDS AROUND 40 MPH...FREQUENT LIGHTNING...AND HEAVY RAIN. THIS STORM WAS LOCATED NEAR BROADALBIN...OR ABOUT 12 MILES EAST OF GLOVERSVILLE...AND MOVING NORTHEAST AT 30 MPH. THE THUNDERSTORM WILL BE NEAR... CORINTH BY 1145 AM EDT WEST GLENS FALLS BY NOON EDT FORT EDWARD AND GLENS FALLS BY 1205 PM EDT HUDSON FALLS BY 1210 PM EDT RAINFALL RATES MAY RANGE FROM A TENTH TO A QUARTER OF AN INCH FROM THIS THUNDERSTORM. LAT...LON 4349 7344 4324 7329 4299 7418 4316 7428 TIME...MOT...LOC 1514Z 245DEG 28KT 4312 7410 TAW
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1125 AM EDT SUN AUG 21 2011
NYZ048>052-211600-
WESTERN SCHENECTADY NY-EASTERN SCHENECTADY NY-WESTERN ALBANY NY-
EASTERN ALBANY NY-SOUTHERN SARATOGA NY-
1125 AM EDT SUN AUG 21 2011
...A STRONG THUNDERSTORM IN
SCHENECTADY COUNTY IN EAST CENTRAL NEW YORK...
ALBANY COUNTY IN EAST CENTRAL NEW YORK...
SARATOGA COUNTY IN EAST CENTRAL NEW YORK...
AT 1121 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING...WINDS AROUND 50 MPH...FREQUENT
LIGHTNING...AND HEAVY RAIN. THIS STORM WAS LOCATED NEAR ALTAMONT
INCLUDING THE COUNTY FAIRGROUNDS...OR ABOUT 8 MILES SOUTHWEST OF
ROTTERDAM...AND MOVING NORTHEAST AT 30 MPH.
THE THUNDERSTORM WILL BE NEAR...
ROTTERDAM AND 6 MILES NORTHWEST OF GUILDERLAND BY 1135 AM EDT
SCHENECTADY...NISKAYUNA...SCOTIA AND COLONIE BY 1140 AM EDT
NISKAYUNA...ALPLAUS AND EAST GLENVILLE BY 1145 AM EDT
CLIFTON PARK BY 1150 AM EDT
RAINFALL RATES WILL RANGE FROM A TENTH TO A THIRD OF AN INCH.
LAT...LON 4291 7378 4278 7369 4259 7409 4267 7417
4271 7416 4273 7417 4271 7419 4271 7421
4273 7423
TIME...MOT...LOC 1523Z 235DEG 28KT 4272 7405
TAWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1128 AM EDT SUN AUG 21 2011
NYZ042-043-211615-
NORTHERN WASHINGTON NY-NORTHERN WARREN NY-
1128 AM EDT SUN AUG 21 2011
...A STRONG THUNDERSTORM MOVING INTO
NORTHERN WASHINGTON COUNTY IN EAST CENTRAL NEW YORK...
NORTHEASTERN WARREN COUNTY IN EAST CENTRAL NEW YORK...
AT 1126 AM 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 EAGLE POINT CAMPGROUND...OR ABOUT 14 MILES NORTH OF
WARRENSBURG...AND MOVING NORTHEAST AT 30 MPH.
THE THUNDERSTORM WILL BE NEAR...
ROGERS ROCK CAMPGROUND AND 7 MILES NORTHWEST OF HAGUE BY 1155 AM EDT
RAINFALL RATES MAY APPROACH A HALF AN INCH IN AN HOUR.
LAT...LON 4381 7337 4379 7337 4358 7384 4373 7398
4377 7392 4377 7384 4381 7339
TIME...MOT...LOC 1527Z 235DEG 28KT 4371 7380
TAWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1144 AM EDT SUN AUG 21 2011
NYZ041-048>050-084-211630-
SOUTHERN WASHINGTON NY-WESTERN SCHENECTADY NY-EASTERN SCHENECTADY NY-
SOUTHERN SARATOGA NY-NORTHERN SARATOGA NY-
1144 AM EDT SUN AUG 21 2011
...A STRONG THUNDERSTORM IN
WASHINGTON COUNTY IN EAST CENTRAL NEW YORK...
SCHENECTADY COUNTY IN EAST CENTRAL NEW YORK...
SARATOGA COUNTY IN EAST CENTRAL NEW YORK...
AT 1140 AM 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 ROTTERDAM JUNCTION...OR ABOUT OVER SCOTIA...AND MOVING
NORTHEAST AT 30 MPH.
THE THUNDERSTORM WILL BE NEAR...
BURNT HILLS BY 1150 AM EDT
BALLSTON SPA...ROUND LAKE AND 7 MILES SOUTHEAST OF ROCK CITY FALLS BY
NOON EDT
MILTON BY 1205 PM EDT
SARATOGA SPRINGS BY 1215 PM EDT
6 MILES WEST OF GREENWICH BY 1230 PM EDT
RAINFALL RATES MAY APPROACH A HALF AN INCH AN HOUR FROM THIS
THUNDERSTORM.
LAT...LON 4307 7339 4279 7400 4289 7410 4290 7409
4296 7410 4327 7359
TIME...MOT...LOC 1543Z 234DEG 25KT 4291 7397
TAWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1147 AM EDT SUN AUG 21 2011
NYZ058-063-064-211630-
WESTERN GREENE NY-WESTERN ULSTER NY-EASTERN ULSTER NY-
1147 AM EDT SUN AUG 21 2011
...A STRONG THUNDERSTORM IN
GREENE COUNTY IN EAST CENTRAL NEW YORK...
ULSTER COUNTY IN EAST CENTRAL NEW YORK...
AT 1145 AM 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 WEST SHOKAN...OR ABOUT 14 MILES NORTHEAST OF
GRAHAMSVILLE...AND MOVING NORTHEAST AT 30 MPH.
THE THUNDERSTORM WILL BE NEAR...
OLIVEBRIDGE BY 1155 AM EDT
MOUNT TREMPER BY NOON EDT
KENNETH L WILSON CAMPGROUND BY 1205 PM EDT
WOODSTOCK AND WEST HURLEY BY 1210 PM EDT
SAUGERTIES BY 1225 PM EDT
RAINFALL AMOUNTS MAY RANGE FROM A QUARTER OF AN INCH TO AN INCH FROM
THIS THUNDERSTORM.
LAT...LON 4197 7447 4224 7404 4217 7404 4216 7400
4217 7400 4212 7391 4209 7393 4207 7392
4206 7394 4201 7394 4182 7434
TIME...MOT...LOC 1547Z 234DEG 25KT 4195 7431
TAWThe Albany radar (KENX), 27 km away, was scanning. The volume nearest the first event began at 15:59 UTC.
13 thunderstorm wind, 1 lightning, 1 funnel cloud. Local standard time, as filed.
A 30 year old male was injuried when he was struck by lightning while riding an ATV at the Indian Lookout Country Club in Pattersonville near Duanesburg.
Trees and wires were reported down on Route 2 and trees down on burning wires on Pine Road in Livingston due to strong thunderstorm winds.
Trees and power lines were reported down on Beaver Dam Road between Trinity Place and Route 144 in Selkirk due to strong thunderstorm winds.
Trees and wires were reported down in Esopus due to strong thunderstorm winds.
Trees were reported down on wires with power outages due to strong thunderstorm winds approximately 5 miles northeast of Albany.
Trees and wires were reported down in Watervliet with power outages due to strong thunderstorm winds.
A tree was reported down due to strong thunderstorm winds and was blocking Frisbee Street in Canaan.
A tree was reported down in Waterford due to strong thunderstorm winds.
A funnel cloud was observed over Pleasant Valley.
Trees were reported down in Dover Plains due to strong thunderstorm winds.
Two trees were reported down in White Creek due to strong thunderstorm winds.
A tree and powerlines were reported down on West Mountain Road due to strong thunderstorm winds, resulting in power outages in Queensbury.
An awning was reported torn off a building due to strong thunderstorm winds at the Levi's outlet store on Route 9 in Queensbury. Also, trees and wires were reported down.
Trees were reported down in Fort Ann due to strong thunderstorm winds.
Numerous trees were reported down in Granville due to strong thunderstorm winds with some trees on houses.
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, 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: 337469, 337491, 337497, 337504, 337520, 337530, 337541, 337543, 337447, 337544, 337545, 337565, 337546, 337569, 337563.