Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 53, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 25, 2009, 6:17 PM EDT for 4 counties in New York. It was in force for 43 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
- Jul 25, 2009, 6:17 PM EDT (22:17 UTC)
- Expired
- Jul 25, 2009, 7:00 PM EDT
- In force
- 43 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Orleans County, NY
The radar
The Buffalo radar (KBUF), 65 km from the middle of the area, began a volume at 22:20 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 |
|---|---|---|---|
| Jul 25, 6:29 PM EDT | TSTM WND DMG | Brockport, NY | TREES AND WIRES DOWN |
| Jul 25, 6:48 PM EDT | TSTM WND DMG | Churchville, NY | TREES AND WIRES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 25, 3:50 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.3 hours before the alert went out and 63 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1504 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 138 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 252217 SVRBUF NYC037-051-055-073-252300- /O.NEW.KBUF.SV.W.0053.090725T2217Z-090725T2300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BUFFALO NY 617 PM EDT SAT JUL 25 2009 THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN GENESEE COUNTY IN WESTERN NEW YORK NORTH CENTRAL LIVINGSTON COUNTY IN WESTERN NEW YORK WESTERN MONROE COUNTY IN WESTERN NEW YORK SOUTHEASTERN ORLEANS COUNTY IN WESTERN NEW YORK * UNTIL 700 PM EDT * AT 616 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 5 MILES NORTH OF BYRON TO 7 MILES SOUTH OF BATAVIA...MOVING NORTHEAST AT 30 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... PAVILION AND BYRON BY 625 PM EDT... BROCKPORT AND LE ROY BY 635 PM EDT... YORK BY 640 PM EDT... CHURCHVILLE BY 645 PM EDT... CALEDONIA BY 650 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THESE STORMS. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SATURDAY EVENING FOR WESTERN NEW YORK. && LAT...LON 4330 7781 4287 7780 4289 7823 4315 7816 TIME...MOT...LOC 2217Z 242DEG 26KT 4315 7807 4291 7816 $$ RSH
2 follow-up statements
000 WWUS51 KBUF 252252 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 652 PM EDT SAT JUL 25 2009 NYC037-051-055-073-252300- /O.CON.KBUF.SV.W.0053.000000T0000Z-090725T2300Z/ LIVINGSTON NY-GENESEE NY-MONROE NY-ORLEANS NY- 652 PM EDT SAT JUL 25 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR SOUTHEASTERN ORLEANS...WESTERN MONROE...EASTERN GENESEE AND NORTH CENTRAL LIVINGSTON COUNTIES... AT 649 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SPENCERPORT...MOVING NORTHEAST AT 30 MPH. THIS STORM WAS SHOWING SIGNS OF ROTATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SATURDAY EVENING FOR WESTERN NEW YORK. && LAT...LON 4330 7781 4287 7780 4289 7823 4315 7816 TIME...MOT...LOC 2251Z 242DEG 26KT 4315 7781 $$ RSH
000 WWUS51 KBUF 252301 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 701 PM EDT SAT JUL 25 2009 NYC037-051-055-073-252311- /O.EXP.KBUF.SV.W.0053.000000T0000Z-090725T2300Z/ LIVINGSTON NY-GENESEE NY-MONROE NY-ORLEANS NY- 701 PM EDT SAT JUL 25 2009 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ORLEANS...WESTERN MONROE...EASTERN GENESEE AND NORTH CENTRAL LIVINGSTON COUNTIES HAS EXPIRED... AT 701 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE THUNDERSTORMS THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE STILL POSSIBLE FROM OTHER THUNDERSTORMS MOVING IN FROM WYOMING COUNTY. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SATURDAY EVENING FOR WESTERN NEW YORK. LAT...LON 4330 7781 4287 7780 4289 7823 4315 7816 TIME...MOT...LOC 2252Z 242DEG 26KT 4315 7780 $$ RSH
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 10:05 PM EDT | Special Marine Warning | BUF | 30 min | |
| Jul 25, 3:21 PM EDT | Special Marine Warning | BUF | 54 min | |
| Jul 25, 3:32 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 58 min |
| Jul 25, 4:11 PM EDT | Tornado Warning | BUF | Erie | 18 min |
| Jul 25, 4:26 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 64 min |
| Jul 25, 4:40 PM EDT | Special Marine Warning | BUF | 65 min | |
| Jul 25, 5:03 PM EDT | Tornado Warning | BUF | Genesee, Monroe, Orleans | 42 min |
| Jul 25, 5:14 PM EDT | Special Marine Warning | BUF | 91 min | |
| Jul 25, 5:25 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Monroe, Orleans | 65 min |
| Jul 25, 5:46 PM EDT | Tornado Warning | BUF | Monroe | 44 min |
| Jul 25, 6:56 PM EDT | Severe Thunderstorm Warning | BUF | Monroe | 64 min |
| Jul 25, 6:58 PM EDT | Special Marine Warning | BUF | 92 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.