Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 85, NWS Albany, NY
NWS Albany, NY issued this severe thunderstorm warning at Jul 7, 2009, 1:47 PM EDT for Herkimer County, New York. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 7, 2009, 1:47 PM EDT (17:47 UTC)
- Expired
- Jul 7, 2009, 2:45 PM EDT
- In force
- 58 min
- Issued by
- NWS Albany, NY
- Area
- Storm-based polygon
County Herkimer County, NY
The radar
The Ft Drum radar (KTYX), 69 km from the middle of the area, began a volume at 17:49 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 7, 11:05 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 5.8 hours before the alert went out and 123 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 93 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 857 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jul 7, 11:24 AM EDT, 2 hours 23 minutes earlier.
Area forecast discussion, Jul 7, 11:24 AM EDT, 2 hours 23 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ALBANY NY 1124 AM EDT TUE JUL 7 2009 ...SEVERE WEATHER LIKELY THIS AFTERNOON ACROSS EASTERN NY AND WESTERN NEW ENGLAND... .SYNOPSIS... ANOTHER UPPER LEVEL LOW PRESSURE SYSTEM WILL MOVE ACROSS THE REGION THROUGH WEDNESDAY...BRINGING MORE UNSETTLED WEATHER AND BELOW NORMAL TEMPERATURES. A BRIEF DRY PERIOD WITH MODERATING TEMPERATURES IS EXPECTED TOWARDS THE END OF THE WORK WEEK. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... SEVERE THUNDERSTORM WATCH # 559 IS IN EFFECT UNTIL 7 PM EDT. INFORMATIONAL NOTE...AN 18Z SOUNDINGS WILL BE DONE. YET ANOTHER CUTOFF/CLOSED LOW AT H500 OVER THE ONTARIO/QUEBEC BORDER IS IMPACTING THE REGION WITH AN IMPRESSIVE SHORTWAVE MOVING IN VIA THE WATER VAPOR LOOP ACROSS LAKE ERIE/WRN NY. THIS SHORT WAVE WILL FOCUS SCT SEVERE STORMS. ACCORDING TO THE CSTAR RESEARCH ...THIS LOOKS LIKE A CLASSIC SEVERE ENVIRONMENT FOR LARGE HAIL AND DAMAGING WINDS. BUF/S 500 HPA TEMPS IS -21C OUR 12Z TEMP IS -16C. AN ANOMALOUSLY COLD POOL OF AIR IS ALOFT. THE FORECAST AREA HAS A PREFRONTAL BAND OF SHOWERS AND THUNDERSTORMS MOVING ACROSS ERN NY. WE ARE EXPECTING SOME SCT SEVERE WITH THIS LINE WITH SBCAPES ACCORDING TO THE LAPS DATA...AND A MODIFIED 12Z KALB SOUNDING RISING INTO THE 1000-1500 J/KG RANGE. LAPSE RATES CONTINUE TO STEEPEN TO ABOUT 7C/KM IN THE H850-500/H700-500 LAYERS. WET BULB ZERO HEIGHTS ARE IN THE 7.5-9 KFT RANGE ACROSS THE RANGE WHICH ARE VERY OPTIMAL FOR SEVERE HAIL WITH SUFFICIENT HEATING. THE DEEP SHEAR IN THE 0-6 KM LAYER IS ABOUT 40 KTS...WITH A STRENGTHENING LOW LEVEL FLOW IN THE AFTERNOON WITH THE APPROACHING SHORT WAVE. WE ARE EXPECTING MULTI- CELLS/ISOLD SUPER CELLS. THE TORNADO THREAT IS VERY SMALL DUE TO A WEAK LLJ/AND HIGH LCLS. VIL OF THE DAY AT KALB FROM 12Z SOUNDING IS 41 KG/M2...WE ARE EXPECTING THIS VALUE TO DROP INTO THE UPPER 30S. OUR EXTENDED FCST IS ALSO DONE FOR THE DAY...SEE BELOW. ...PREVIOUS NEAR TERM BELOW... SHOWERS AND STORMS HAVE MOVED INTO ADJACENT WESTERN NEW ENGLAND AND SHOULD BE COMPLETELY OUT OF OUR CWA AFTER 400 AM. AFTER A BRIEF BREAK MORE SHOWERS FROM THE NIAGARA FRONTIER WILL HEAD INTO OUR ADIRONDACKS BY SUN RISE OR A LITTLE LATER. THEN...THE MAIN ENERGY ASSOCIATED WITH THE UPPER AIR LOW LOCATED NORTH OF SUE SAINT MARIE MI (A SURFACE COLD FRONT)...AIDED BY 110+ KT JET AT THE 300 HPA LEVEL...WILL ARRIVE BY MIDDAY. DYNAMICS ARE STRONG WITH SYSTEM. 500 HPA TEMPERATURES ARE FORECAST TO DROP TO -18C...QUIET COLD FOR THE TIME OF YEAR. EVEN WITHOUT SUFFICIENT SUNSHINE TODAY...SBCAPES WILL LIKELY JUMP UP TO THE 750-1000 J/KG RANGE. IF WE WERE TO GET SOME GOOD SUNSHINE AND TEMPS WERE RAISED A COUPLE OF DEGREES...SBCAPES COULD EASILY JUMP TO ABOUT 1500 J/KG. ONCE AGAIN WE FEEL THE NAM PLANAR DEWPOINTS ARE A LITTLE HIGH...FORECASTING POCKETS OF SBCAPE VALUES EXCEEDING 2000 J/KG HOWEVER...EVEN THE GFS INDICATES DEWPOINTS WILL EASILY REACH INTO THE 60S JUST TO THE SOUTH AND EAST OF ALBANY. 850-500 HPA LAPSE RATES APPROACH (AND IN SOME CASES) EXCEED 7.0C/KM. WETBULB TEMPERATURES FALL TO AROUND 8,000 FEET AND THE BULK SHEAR APPROACHES 40KTS. THE POTENTIAL TODAY IS THERE FOR SOME OF OUR STORMS TO BECOME SEVERE...CONTAINING LARGE HAIL AND DAMAGING WIND GUSTS. THERE IS AN OUTSIDE THAT ONE OR TWO CELLS COULD BECOME SUPER CELLS. HOWEVER...LCL VALES DROPPING TO ABOUT 2500 FEET AGL WILL PROBABLY PRECLUDE ANY TORNADOES IN OUR REGION. EITHER WAY...IT COULD BE A ROUGH DAY IN OUR PARTS. FOR NOW...WILL CONTINUE WITH SMALL HAIL AND GUSTY WIND WORDING IN OUR ZONES. (IF AND WHEN AN OFFICIAL SEVERE THUNDERSTORM WATCH IS ISSUED...FORECASTERS CAN PUMP UP WORDING). WENT WITH A BLEND OF THE MAV/MET VALUES FOR AFTERNOON HIGHS. WITH 850 HPA FORECAST AROUND +9C WE FORECAST HIGH TEMPERATURES 70-75 IN THE HUDSON VALLEY...60S HIGHER TERRAIN. NORMALLY THESE VALUES WOULD NOT BE WARM ENOUGH TO TRIGGER CONVECTION BUT ONCE AGAIN WE ARE LOOKING AT AN UNUSUALLY COLD UPPER AIR LOW. && .SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY NIGHT/... THE COLD FRONT WILL SHIFT TO OUR EAST LATER TONIGHT. THE THREAT OF STRONG TO EVEN LOCALLY SEVERE THUNDERSTORMS WILL CONTINUE INTO THE EVENING HOURS. THE ATMOSPHERE WILL SLOWLY SETTLE DOWN OVERNIGHT BUT THERE WILL BE ADDITIONAL LIGHT SHOWERS THAT MIGHT ACTUALLY BE LAKE ENHANCED AS 850 HPA TEMPERATURES ARE FORECAST TO DROP TO ABOUT +6C AND OF COURSE...WITH THE UPPER AIR LOW STILL TO OUR NORTH...THE FLOW FROM THE SURFACE TO THE 500 HPA WILL BE CYCLONIC. THE UPPER AIR LOW WILL PAINFULLY SLOWLY MOVE EAST TO OUR NORTHEAST WEDNESDAY BUT MORE SHORT WAVES WILL LIKELY PIVOT AROUND IT. EITHER WAY...LOTS OF LOW LEVEL MOISTURE WILL CONTINUE TO SWIRL AROUND IT. EVEN WITH ONLY MARGINAL BREAKS OF SUNSHINE...BOTH MODELS INDICATE SBCAPES GENERALLY IN THE 250-500 J/KG RANGE. WILL CONTINUE WITH SLIGHT CHANCES OF THUNDER ALONG WITH CHANCES OF SHOWERS...LIKELY OVER THE HIGHER TERRAIN NORTH AND EAST OF ALBANY. WITH WET BULB TEMPERATURES FALLING BELOW 8000 FEET...WILL INTRODUCE THE CHANCE OF SMALL HAIL FOR THAT DAY AS WELL. WITH A FAIR AMOUNT OF CLOUDS (ESPECIALLY OVER THE HIGHER TERRAIN) AND 850 HPA TEMPERATURES ONLY WARMING TO ABOUT +8C...WENT WITH HIGH TEMPERATURES ONCE AGAIN 70-75 VALLEY LOCATIONS...60S HIGHER TERRAIN. WHAT MONTH ARE TALKING ABOUT AGAIN? EVEN ON WEDNESDAY NIGHT INTO EARLY THURSDAY THE SLOWLY DEPARTING UPPER AIR LOW...WILL ATTEMPT TO SEND US BOUTS OF LOW LEVEL MOISTURE OUR WAY. BY LATER IN THE DAY...THE FLOW WILL FINALLY TURN MORE ANTICYCLONIC AND DRY OUT THE LOWER LEVELS. HAVING STATED THIS...850 HPA TEMPERATURES DO NOT WARM MUCH ON THURSDAY...ONLY RANGING FROM 7-9C...STILL BELOW NORMAL FOR THE TIME YEAR. THEREFORE SURFACE TEMPERATURES DONT LOOK A LOT WARMER THAN WEDNESDAY...JUST A FEW POINTS...BUT STILL WELL BELOW NORMAL AS WELL. CONTINUE WITH THE MAV/MET BLEND IDEA FOR HI/LOW TEMPERATURES IN THE SHORT TERM RANGE. && .LONG TERM /FRIDAY NIGHT THROUGH MONDAY/... PERIOD TO START OUT DRY FRI NIGHT...WITH A MILD SOUTHERLY RETURN FLOW DEVELOPING AS HIGH PRESSURE SHIFTS EASTWARD TOWARDS THE ATLANTIC SEABOARD. HOWEVER...A COLD FRONT WILL BE APPROACHING FROM THE GREAT LAKES REGION BY SAT MORNING. THE COLD FRONT SHOULD PASS THROUGH SAT AFTERNOON INTO SAT EVENING. EXTENT OF CLOUD COVER AHEAD OF THE FRONT UNCERTAIN AT THIS TIME...SO LOW CONFIDENCE IN SEVERE POTENTIAL. ALSO...DUE TO POSSIBLE TIMING ISSUES WILL LIMIT POPS AT 50 PERCENT FOR NOW...WITH PLENTY OF TIME TO REFINE FORECAST. WILL MENTION THUNDER TO DUE AT LEAST ELEVATED INSTABILITY PRESENT. SHOULD LOW LEVEL MOISTURE INCREASE SUFFICIENTLY...THERE WILL BE A BETTER CHANCE FOR ROBUST CONVECTION. GFS/ECMWF IN FAIRLY GOOD AGREEMENT FOR THIS SYSTEM...SO FRONT SHOULD PUSH EAST OF THE REGION LATE SAT NIGHT INTO EARLY SUN MORNING. WILL MENTION LOW CHANCE FOR MAINLY A FEW HIGHER ELEVATION SHOWERS ON SUN DUE TO CYCLONIC FLOW ALOFT WITH A POSSIBLE DISTURBANCE OR TWO MOVING THROUGH. IN GENERAL THE MAIN STORY WILL BE COOL TEMPS ONCE AGAIN...WITH NORTHWEST FLOW REGIME SETTLING IN THROUGH THROUGH MON. TEMPS EXPECTED TO BE A GOOD 5-10 DEGREES BELOW AVG. MODELS REALLY START TO DIVERGE MON NIGHT INTO TUE...AS THE ECMWF SHOWING AN UPPER LEVEL RIDGE BUILDING ACROSS THE MIDWEST WITH AN AMPLIFIED PATTERN AND THE TROF STILL PERSISTING ACROSS THE NORTHEAST. HOWEVER...THE GFS IS DEPICTING A FLATTER UPPER LEVEL PATTERN WITH A WARM FRONT APPROACHING FROM THE MIDWEST. FOR NOW WILL MENTION CHANCE POPS WITH COOL TEMPS PERSISTING. && .AVIATION /15Z TUESDAY THROUGH SATURDAY/... ANY FOG WILL BURN OFF AT THE TERMINALS BY 13Z. THEN...ANOTHER DISTURBANCE WILL TOUCH OFF SCATTERED SHOWERS. AS A COLD/OCCLUDED FRONT APPROACHES LATER TODAY...SHOWERS WILL BECOME MORE NUMEROUS AND THUNDERSTORMS ARE POSSIBLE. IT APPEARS THAT OCCASIONAL SHOWERS WILL IMPACT THE AIRPORTS LATER TODAY WITH POSSIBLY BRIEF DROPS IN VSBY TO MVFR (MAYBE EVEN IFR) AND CIGS POSSIBLY DROPPING INTO THE MVFR CATEGORY AS WELL. IT IS NOT CERTAIN HOW EXTENSIVE THUNDERSTORM ACTIVITY WILL BE BUT THREAT IS THERE FOR ANY OF THEM TO BECOME BRIEFLY SEVERE INCLUDING STRONG WIND GUSTS AND PENNY SIZE HAIL DURING THE AFTERNOON. FOR NOW...DID GO WITH CATEGORICAL SHOWERS AT KGFL/KALB DURING THE AFTERNOON...STILL WENT WITH VCSH AT KPOU. INCLUDED THE CB TERMINOLOGY. THE SHOWER/STORM THREAT WILL CONTINUE INTO THE EVENING HOURS BEFORE DIMINISHING OVERNIGHT. THERE MIGHT BE FOG OVERNIGHT...ESPECIALLY IF WE GET BREAKS IN THE CLOUDS AND A WET GROUND FROM EARLIER RAINFALL. THE WIND FIELD WILL BE LIGHT. PLEASE REFER BACK TO THIS DISCUSSION FOR LATER DISCUSSION AND REASSESSMENT OF THE SITUATION. OUTLOOK... WED...VFR...CHANCE OF MVFR IN -SHRAS/-TSRAS. THU-FRI...VFR...XCP AM MVFR FOG POSSIBLE...NO SIG WX. SAT...MAINLY VFR WITH GOOD CHC SHRA/TSRA. && .FIRE WEATHER... EXPECT OCCASIONAL SHOWER ACTIVITY BY MIDDAY...EVEN SOME IN THE MORNING. THUNDERSTORMS ARE A GOOD BET AS WELL... AND SOME OF THESE COULD BECOME QUITE ROBUST WITH HAIL AND GUSTY WINDS. SHOWERS AND STORMS WILL DIMINISH DURING THE EVENING WITH A FEW LEFTOVER SHOWERS POSSIBLE OVERNIGHT AND AGAIN INTO WEDNESDAY. BY AFTERNOON...A THUNDERSTORM STILL CANNOT BE RULED OUT THAT MIGHT CONTAIN SMALL HAIL. FINALLY...BY THURSDAY...SOME DRIER WEATHER IS ANTICIPATED BUT TEMPERATURES WILL STILL BELOW NORMAL. RH VALUES WILL REMAIN QUITE ELEVATED THROUGH WEDNESDAY...APPROACHING 100 PERCENT EACH NIGHT. THE WIND WILL BE LIGHT VARIABLE TO SOUTH TODAY UNDER 10 MPH AND TONIGHT. THE WIND WILL NORTH TO NORTHWEST 5-15 MPH ON WEDNESDAY. && .HYDROLOGY... ANOTHER UPPER LEVEL LOW PRESSURE SYSTEM WILL PLAGUE THE REGION INTO MID WEEK...ALTHOUGH...FLASH FLOOD POTENTIAL LOOKS CONSIDERABLY LOWER THAN LAST WEEK DUE TO LOW PWATS AND MORE PROGRESSIVE MOVING STORMS. PRECIPITABLE WATERS WILL INCREASE THROUGH THE DAY BUT ARE EXPECTED TO REMAIN NEAR OR SLIGHTLY ABOVE NORMAL. WHILE WIDESPREAD HEAVY RAINFALL LOOKS MINIMAL AT THE PRESENT TIME...ONE STORM CAN DUMP OUT ENOUGH RAIN TO PRODUCE URBAN AND SMALL STREAM FLOODING. AGAIN...OVERALL THREAT OF SIGNIFICANT FLOODING IS LOWER THAN LAST WEEK. AS FOR RIVER FLOOD POTENTIAL...DO NOT EXPECT MUCH IN THE WAY OF ANY SIGNIFICANT RESPONSE AS RIVERS HAVE HAD A CHANCE TO RECEDE FOLLOWING LAST WEEK/S HEAVY PRECIP. HOWEVER...MINOR RISES ARE EXPECTED DEPENDING ON WHERE THUNDERSTORM ACTIVITY MOVES ACROSS. && .ALY WATCHES/WARNINGS/ADVISORIES... CT...NONE. NY...NONE. MA...NONE. VT...NONE. && SYNOPSIS...HWJIV NEAR TERM...WASULA/HWJIV SHORT TERM...HWJIV LONG TERM...JPV AVIATION...HWJIV FIRE WEATHER...HWJIV HYDROLOGY...BGM
Hazardous weather outlook, Jul 7, 11:16 AM EDT, 2 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ALBANY NY 1116 AM EDT TUE JUL 7 2009 CTZ001-013-MAZ001-025-NYZ032-033-038>043-047>054-058>061-063>066- 082>084-VTZ013>015-081530- 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- 1116 AM EDT TUE JUL 7 2009 ...SEVERE THUNDERSTORM WATCH 559 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 ON SATURDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTERS ARE ACTIVATED FOR THE FOLLOWING COUNTIES... HERKIMER...HAMILTON...FULTON...MONTGOMERY...SARATOGA...WARREN... WASHINGTON...SCHOHARIE...SCHENECTADY...ALBANY...RENSSELAER... GREEENE...COLUMBIA...ULSTER...DUTCHESS...LITCHFIELD...BERKSHIRE... BENNINGTON...WINDHAM. SKYWARN SPOTTERS SHOULD SEND SEVERE WEATHER REPORTS TO THE NATIONAL WEATHER SERVICE ACCORDING TO PRESCRIBED PROCEDURES.
In the hours before
Special weather statement, Jul 7, 1:02 PM EDT, 45 minutes before
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</html>The office that day
Everything else NWS Albany, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 11:35 AM EDT | Severe Thunderstorm Warning | ALY | Albany, Columbia, Greene, Rensselaer | 55 min |
| Jul 7, 12:03 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer | 57 min |
| Jul 7, 12:31 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Rensselaer | 54 min |
| Jul 7, 2:37 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Herkimer, Montgomery | 53 min |
| Jul 7, 3:27 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Montgomery | 63 min |
| Jul 7, 3:28 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 77 min |
| Jul 7, 3:58 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Montgomery, Schenectady, Schoharie | 62 min |
| Jul 7, 4:36 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer, Saratoga, Schenectady | 54 min |
| Jul 7, 4:43 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Greene | 50 min |
| Jul 7, 6:14 PM EDT | Severe Thunderstorm Warning | ALY | Washington | 46 min |
| Jul 7, 12:41 PM EDT | Areal Flood Advisory | ALY | Bennington | 101 min |
| Jul 7, 1:21 PM EDT | Severe Thunderstorm Warning | ALY | Windham | 50 min |
| Jul 7, 7:08 PM EDT | Areal Flood Advisory | ALY | Bennington, Windham | 3 hr |
| Jul 7, 6:07 PM EDT | Severe Thunderstorm Warning | ALY | Berkshire | 38 min |
Nearby
Severe Thunderstorm Warnings in New York, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.