Alert archive / New York / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 97, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Sep 11, 2011, 2:46 PM EDT for Livingston County, Monroe County, Ontario County, New York. It was in force for 44 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
- Sep 11, 2011, 2:46 PM EDT (18:46 UTC)
- Expired
- Sep 11, 2011, 3:30 PM EDT
- In force
- 44 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Livingston County, NY, Monroe County, NY, Ontario County, NY
The radar
The Buffalo radar (KBUF), 109 km from the middle of the area, began a volume at 18:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 11, 3:08 PM EDT | TSTM WND DMG | Canandaigua, NY | BRANCHES AND LIMBS DOWN. DIME SIZE HAIL |
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, 6.8 hours before the alert went out and 106 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
- 1397 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
243
WUUS51 KBUF 111846
SVRBUF
NYC051-055-069-111930-
/O.NEW.KBUF.SV.W.0097.110911T1846Z-110911T1930Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
246 PM EDT SUN SEP 11 2011
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN LIVINGSTON COUNTY IN WESTERN NEW YORK
SOUTH CENTRAL MONROE COUNTY IN WESTERN NEW YORK
ONTARIO COUNTY IN WESTERN NEW YORK
* UNTIL 330 PM EDT
* AT 245 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM LIMA TO 6 MILES SOUTH OF
CANANDAIGUA...OR ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST OF
GENESEO TO 6 MILES SOUTH OF CANANDAIGUA...AND MOVING EAST AT 20
MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...
CANANDAIGUA...
VICTOR...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE 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 4293 7778 4303 7748 4304 7721 4276 7710
4275 7725 4276 7731 4270 7734 4269 7736
TIME...MOT...LOC 1846Z 255DEG 15KT 4291 7760 4280 7728
$$
HIBBERT3 follow-up statements
306
WWUS51 KBUF 111901
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
301 PM EDT SUN SEP 11 2011
NYC051-055-111911-
/O.CAN.KBUF.SV.W.0097.000000T0000Z-110911T1930Z/
LIVINGSTON NY-MONROE NY-
301 PM EDT SUN SEP 11 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MONROE AND
NORTHEASTERN LIVINGSTON COUNTIES IS CANCELLED...
LAT...LON 4269 7736 4290 7755 4304 7721 4276 7710
4275 7725 4276 7731 4271 7734
TIME...MOT...LOC 1901Z 255DEG 15KT 4293 7752 4282 7720
$$
NYC069-111930-
/O.CON.KBUF.SV.W.0097.000000T0000Z-110911T1930Z/
ONTARIO NY-
301 PM EDT SUN SEP 11 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR CENTRAL ONTARIO COUNTY...
AT 259 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM EAST BLOOMFIELD TO COTTAGE
CITY...OR ALONG A LINE EXTENDING FROM 13 MILES WEST OF CANANDAIGUA TO
6 MILES SOUTHEAST OF CANANDAIGUA...MOVING EAST AT 15 MPH.
SOME LOCATIONS IN THE WARNING INCLUDE...
GORHAM...
SHORTSVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE 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 4269 7736 4290 7755 4304 7721 4276 7710
4275 7725 4276 7731 4271 7734
TIME...MOT...LOC 1901Z 255DEG 15KT 4293 7752 4282 7720
$$
HIBBERT121 WWUS51 KBUF 111921 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 321 PM EDT SUN SEP 11 2011 NYC069-111930- /O.CON.KBUF.SV.W.0097.000000T0000Z-110911T1930Z/ ONTARIO NY- 321 PM EDT SUN SEP 11 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR CENTRAL ONTARIO COUNTY... AT 317 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM CANANDAIGUA TO GORHAM WITH THE STRONGEST STORM ABOUT 4 MILES SOUTHWEST OF GORHAM...MOVING EAST AT 15 MPH. SOME LOCATIONS IN THE WARNING INCLUDE... GORHAM... PRECAUTIONARY/PREPAREDNESS ACTIONS... THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4275 7725 4289 7741 4297 7719 4276 7710 TIME...MOT...LOC 1920Z 255DEG 15KT 4290 7729 4279 7713 $$ HIBBERT
579 WWUS51 KBUF 111931 SVSBUF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 331 PM EDT SUN SEP 11 2011 NYC069-111940- /O.EXP.KBUF.SV.W.0097.000000T0000Z-110911T1930Z/ ONTARIO NY- 331 PM EDT SUN SEP 11 2011 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ONTARIO COUNTY HAS EXPIRED... AT 330 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE THUNDERSTORM 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 THE THUNDERSTORM ACROSS CENTRAL ONTARIO COUNTY IN THE VICINITY OF GORHAM. LAT...LON 4275 7725 4289 7741 4297 7719 4276 7710 TIME...MOT...LOC 1930Z 255DEG 15KT 4291 7723 4280 7707 $$ HIBBERT
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 12:34 PM EDT | Special Weather Statement | BUF | Erie | 56 min |
| Sep 11, 12:40 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua, Erie | 3 hr |
| Sep 11, 12:43 PM EDT | Special Weather Statement | BUF | Genesee | 62 min |
| Sep 11, 12:46 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Wyoming | 44 min |
| Sep 11, 1:33 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Wyoming | 42 min |
| Sep 11, 1:34 PM EDT | Flash Flood Warning | BUF | Livingston, Wyoming | 3 hr |
| Sep 11, 1:55 PM EDT | Severe Thunderstorm Warning | BUF | Ontario | 50 min |
| Sep 11, 2:04 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Wyoming | 41 min |
| Sep 11, 2:17 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Ontario, Wyoming | 43 min |
| Sep 11, 4:31 PM EDT | Special Weather Statement | BUF | Chautauqua | 59 min |
| Sep 11, 5:01 PM EDT | Special Weather Statement | BUF | Erie | 59 min |
| Sep 11, 5:21 PM EDT | Areal Flood Advisory | BUF | Niagara | 114 min |
Nearby
Severe Thunderstorm Warnings in New York, 2011Every severe thunderstorm warning in 2011
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.