Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 64, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 4, 2009, 7:10 PM EDT for Jefferson County, Lewis County, New York. It was in force for 65 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 4, 2009, 7:10 PM EDT (23:10 UTC)
- Expired
- Aug 4, 2009, 8:15 PM EDT
- In force
- 65 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Jefferson County, NY, Lewis County, NY
The radar
The Ft Drum radar (KTYX), 45 km from the middle of the area, began a volume at 23:12 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 4, 7:20 PM EDT | TSTM WND DMG | Philadelphia, NY | 14X80 TRAILER TIPPED OVER ON A CAR |
| Aug 4, 7:31 PM EDT | TSTM WND DMG | Antwerp, NY | TREES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 11.2 hours before the alert went out and 218 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1014 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KBUF 042310 SVRBUF NYC045-049-050015- /O.NEW.KBUF.SV.W.0064.090804T2310Z-090805T0015Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BUFFALO NY 710 PM EDT TUE AUG 4 2009 THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN JEFFERSON COUNTY IN CENTRAL NEW YORK NORTHEASTERN LEWIS COUNTY IN CENTRAL NEW YORK * UNTIL 815 PM EDT * AT 707 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 18 MILES NORTH OF FORT DRUM TO CALCIUM...AND MOVING EAST AT 25 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... CALCIUM BY 715 PM EDT... FORT DRUM BY 725 PM EDT... WEST CARTHAGE AND CARTHAGE BY 745 PM EDT... INDIAN RIVER BY 815 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...HAIL...VERY HEAVY RAIN AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4439 7584 4409 7515 4395 7515 4397 7608 TIME...MOT...LOC 2309Z 268DEG 20KT 4431 7568 4405 7590 $$ TJP
2 follow-up statements
000 WWUS51 KBUF 042330 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 730 PM EDT TUE AUG 4 2009 NYC045-049-050015- /O.CON.KBUF.SV.W.0064.000000T0000Z-090805T0015Z/ LEWIS NY-JEFFERSON NY- 730 PM EDT TUE AUG 4 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR NORTHEASTERN JEFFERSON AND NORTHEASTERN LEWIS COUNTIES... AT 728 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM ANTWERP TO FORT DRUM... MOVING EAST AT 25 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... DEFERIET BY 735 PM EDT... WEST CARTHAGE AND CARTHAGE BY 740 PM EDT... CARTHAGE BY 745 PM EDT... NATURAL BRIDGE BY 800 PM EDT... INDIAN RIVER AND HARRISVILLE BY 815 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...VERY HEAVY RAIN...HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4397 7591 4431 7565 4409 7515 4395 7515 TIME...MOT...LOC 2330Z 268DEG 20KT 4423 7558 4408 7571 $$ TJP
000 WWUS51 KBUF 050016 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 816 PM EDT TUE AUG 4 2009 NYC045-049-050025- /O.EXP.KBUF.SV.W.0064.000000T0000Z-090805T0015Z/ LEWIS NY-JEFFERSON NY- 816 PM EDT TUE AUG 4 2009 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON AND NORTHEASTERN LEWIS COUNTIES HAS EXPIRED... AT 815 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE EXITED THE WARNED AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER...THUNDERSTORMS WILL CONTINUE TO PRODUCE HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS THROUGH 9 PM EDT. LAT...LON 4397 7591 4431 7565 4409 7515 4395 7515 TIME...MOT...LOC 2330Z 268DEG 20KT 4423 7558 4408 7571 $$ TJP
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 4:23 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Wyoming | 52 min |
| Aug 4, 5:35 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Livingston, Monroe, Ontario, Wyoming | 55 min |
| Aug 4, 6:55 PM EDT | Special Marine Warning | BUF | 65 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.