Alert archive / New York / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 9, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at May 11, 2015, 9:57 PM EDT for 5 counties in New York. It was in force for 48 min. 3 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
- May 11, 2015, 9:57 PM EDT (01:57 UTC)
- Expired
- May 11, 2015, 10:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Erie County, NY, Genesee County, NY, Livingston County, NY, Orleans County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 47 km from the middle of the area, began a volume at 01:57 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 |
|---|---|---|---|
| May 11, 10:07 PM EDT | TSTM WND DMG | 2 E Alden, NY | TREE AND WIRES DOWN. |
| May 11, 10:07 PM EDT | TSTM WND DMG | Leroy, NY | TREE AND WIRES DOWN. |
| May 11, 10:10 PM EDT | TSTM WND DMG | 1 Sw Pembroke, NY | TREE AND WIRES DOWN MAPLE RD. |
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 |
|---|---|---|---|
| May 11, 8:18 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.0 hours before the alert went out and 44 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
- 14 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1723 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
301
WUUS51 KBUF 120157
SVRBUF
NYC029-037-051-073-121-120245-
/O.NEW.KBUF.SV.W.0009.150512T0157Z-150512T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
957 PM EDT MON MAY 11 2015
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN LIVINGSTON COUNTY IN WESTERN NEW YORK...
GENESEE COUNTY IN WESTERN NEW YORK...
NORTHEASTERN ERIE COUNTY IN WESTERN NEW YORK...
NORTHERN WYOMING COUNTY IN WESTERN NEW YORK...
SOUTHEASTERN ORLEANS COUNTY IN WESTERN NEW YORK...
* UNTIL 1045 PM EDT
* AT 956 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
WAS LOCATED OVER ALDEN...OR NEAR CLARENCE...AND MOVING NORTHEAST AT
45 MPH.
* LOCATIONS IMPACTED INCLUDE...
CLARENCE...BATAVIA...ALBION...DARIEN LAKES STATE PARK...MARILLA...
LE ROY...PEMBROKE AND AVON.
THIS INCLUDES INTERSTATE 90 BETWEEN EXITS 48A AND 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4301 7865 4309 7850 4309 7847 4310 7846
4334 7800 4314 7800 4313 7791 4304 7795
4304 7791 4299 7790 4299 7780 4288 7775
4275 7856
TIME...MOT...LOC 0156Z 239DEG 40KT 4294 7851
$$
CHURCH2 follow-up statements
380
WWUS51 KBUF 120225
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1025 PM EDT MON MAY 11 2015
NYC029-121-120234-
/O.CAN.KBUF.SV.W.0009.000000T0000Z-150512T0245Z/
ERIE NY-WYOMING NY-
1025 PM EDT MON MAY 11 2015
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ERIE AND NORTHERN
WYOMING COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 4315 7834 4334 7800 4314 7800 4313 7791
4304 7795 4304 7791 4299 7790 4299 7780
4288 7775 4287 7828
TIME...MOT...LOC 0224Z 239DEG 40KT 4312 7811
$$
NYC037-051-073-120245-
/O.CON.KBUF.SV.W.0009.000000T0000Z-150512T0245Z/
LIVINGSTON NY-GENESEE NY-ORLEANS NY-
1025 PM EDT MON MAY 11 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHWESTERN LIVINGSTON...GENESEE AND SOUTHEASTERN ORLEANS
COUNTIES...
AT 1024 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. IN
ADDITION...AT 1007 PM WIND DAMAGE WAS REPORTED NEAR DARIEN. THIS
STORM WAS LOCATED NEAR BYRON...OR 8 MILES NORTHEAST OF
BATAVIA...MOVING NORTHEAST AT 45 MPH.
LOCATIONS IMPACTED INCLUDE...
BATAVIA...ALBION...LE ROY...AVON...ATTICA...PAVILION...BYRON AND
CALEDONIA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4315 7834 4334 7800 4314 7800 4313 7791
4304 7795 4304 7791 4299 7790 4299 7780
4288 7775 4287 7828
TIME...MOT...LOC 0224Z 239DEG 40KT 4312 7811
$$
CHURCH694
WWUS51 KBUF 120241
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1041 PM EDT MON MAY 11 2015
NYC037-051-073-120250-
/O.EXP.KBUF.SV.W.0009.000000T0000Z-150512T0245Z/
LIVINGSTON NY-GENESEE NY-ORLEANS NY-
1041 PM EDT MON MAY 11 2015
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LIVINGSTON...
GENESEE AND SOUTHEASTERN ORLEANS COUNTIES WILL EXPIRE AT 1045 PM
EDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER GUSTY WINDS
ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 4315 7834 4334 7800 4314 7800 4313 7791
4304 7795 4304 7791 4299 7790 4299 7780
4288 7775 4287 7828
TIME...MOT...LOC 0238Z 239DEG 40KT 4312 7811
$$
CHURCHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 8:26 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 64 min |
| May 11, 8:53 PM EDT | Special Marine Warning | BUF | 2 hr | |
| May 11, 8:59 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 46 min |
| May 11, 9:20 PM EDT | Special Weather Statement | BUF | Niagara | 40 min |
| May 11, 9:35 PM EDT | Special Weather Statement | BUF | Cattaraugus | 40 min |
| May 11, 9:45 PM EDT | Special Weather Statement | BUF | Erie, Genesee | 45 min |
| May 11, 10:28 PM EDT | Special Marine Warning | BUF | 62 min | |
| May 11, 10:40 PM EDT | Special Weather Statement | BUF | Monroe | 35 min |
| May 11, 11:21 PM EDT | Special Marine Warning | BUF | 114 min | |
| May 12, 3:51 PM EDT | Freeze Watch | BUF | Allegany, Cattaraugus, Lewis | 12 hr |
Nearby
Severe Thunderstorm Warnings in New York, 2015Every severe thunderstorm warning in 2015
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.