Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 62, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 4, 2009, 4:23 PM EDT for Erie County, Genesee County, Wyoming County, New York. It was in force for 52 min. 1 report 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, 4:23 PM EDT (20:23 UTC)
- Expired
- Aug 4, 2009, 5:15 PM EDT
- In force
- 52 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Erie County, NY, Genesee County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 51 km from the middle of the area, began a volume at 20:23 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, 4:28 PM EDT | HAIL 1 | Strykersville, NY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.4 hours before the alert went out and 47 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
- 132 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 961 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 57 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 042023
SVRBUF
NYC029-037-121-042115-
/O.NEW.KBUF.SV.W.0062.090804T2023Z-090804T2115Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
423 PM EDT TUE AUG 4 2009
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL ERIE COUNTY IN WESTERN NEW YORK
SOUTHEASTERN GENESEE COUNTY IN WESTERN NEW YORK
WYOMING COUNTY IN WESTERN NEW YORK
* UNTIL 515 PM EDT
* AT 421 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES
SOUTH OF WALES CENTER...OR 7 MILES SOUTHEAST OF EAST AURORA...AND
MOVING EAST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
VARYSBURG BY 450 PM EDT...
WARSAW BY 505 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...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 4274 7871 4303 7795 4296 7791 4295 7793
4291 7793 4291 7795 4269 7795 4264 7797
4263 7799 4252 7863
TIME...MOT...LOC 2022Z 248DEG 25KT 4268 7855
$$
TJP2 follow-up statements
000
WWUS51 KBUF 042044
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
444 PM EDT TUE AUG 4 2009
NYC029-037-121-042115-
/O.CON.KBUF.SV.W.0062.000000T0000Z-090804T2115Z/
WYOMING NY-GENESEE NY-ERIE NY-
444 PM EDT TUE AUG 4 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR EAST CENTRAL ERIE...SOUTHEASTERN GENESEE AND WYOMING COUNTIES...
AT 442 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR VARYSBURG...OR 13 MILES EAST OF EAST AURORA...MOVING
EAST AT 30 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
VARYSBURG BY 450 PM EDT...
WARSAW BY 505 PM EDT...
WYOMING BY 515 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...HAIL...AND DEADLY CLOUD TO GROUND
LIGHTNING. THE STORM IS ALSO PRODUCING VERY HEAVY RAIN THAT CAN
CAUSE PONDING OF WATER ON ROADWAYS AND POOR DRAINAGE FLOODING.
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A
STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 4274 7871 4303 7795 4296 7791 4295 7793
4291 7793 4291 7795 4269 7795 4264 7797
4263 7799 4252 7863
TIME...MOT...LOC 2043Z 248DEG 25KT 4273 7836
$$
TJP000
WWUS51 KBUF 042113
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
513 PM EDT TUE AUG 4 2009
NYC029-037-121-042122-
/O.EXP.KBUF.SV.W.0062.000000T0000Z-090804T2115Z/
WYOMING NY-GENESEE NY-ERIE NY-
513 PM EDT TUE AUG 4 2009
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ERIE...
SOUTHEASTERN GENESEE AND WYOMING COUNTIES WILL EXPIRE AT 515 PM
EDT...
RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS ARE
STILL POSSIBLE AS SCATTERED THUNDERSTORMS CONTINUE TO TRACK EAST
ACROSS SOUTHERN ERIE AND WYOMING COUNTIES THROUGH 6 PM EDT.
LAT...LON 4274 7871 4303 7795 4296 7791 4295 7793
4291 7793 4291 7795 4269 7795 4264 7797
4263 7799 4252 7863
TIME...MOT...LOC 2112Z 248DEG 25KT 4276 7805
$$
TJPThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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 | |
| Aug 4, 7:10 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 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.