Alert archive / New York / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 13, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Apr 27, 2011, 7:42 PM EDT for Cayuga County, Ontario County, Wayne County, New York. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2011, 7:42 PM EDT (23:42 UTC)
- Expired
- Apr 27, 2011, 8:30 PM EDT
- In force
- 48 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Cayuga County, NY, Ontario County, NY, Wayne County, NY
The radar
The Ft Drum radar (KTYX), 117 km from the middle of the area, began a volume at 23:45 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 27, 3:10 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.7 hours before the alert went out and 153 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
- 27 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 987 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
075
WUUS51 KBUF 272342
SVRBUF
NYC011-069-117-280030-
/O.NEW.KBUF.SV.W.0013.110427T2342Z-110428T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
742 PM EDT WED APR 27 2011
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN CAYUGA COUNTY IN CENTRAL NEW YORK
NORTHEASTERN ONTARIO COUNTY IN WESTERN NEW YORK
WAYNE COUNTY IN WESTERN NEW YORK
* UNTIL 830 PM EDT
* AT 739 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 MARION
TO 5 MILES NORTHEAST OF PHELPS TO GENEVA...OR ALONG A LINE
EXTENDING FROM 17 MILES EAST OF FAIRPORT TO 8 MILES NORTHWEST OF
WATERLOO TO GENEVA...AND MOVING NORTHEAST AT 45 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...
CLYDE...
CATO...
WEEDSPORT...
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 TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT WEDNESDAY EVENING
FOR WESTERN NEW YORK.
&&
LAT...LON 4276 7710 4295 7706 4316 7726 4331 7690
4332 7679 4335 7673 4335 7670 4342 7662
4325 7660 4326 7649 4304 7650 4301 7695
4282 7697
TIME...MOT...LOC 2343Z 241DEG 39KT 4314 7705 4301 7693
4285 7697
$$
HIBBERT2 follow-up statements
238
WWUS51 KBUF 280003
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
803 PM EDT WED APR 27 2011
NYC069-280013-
/O.CAN.KBUF.SV.W.0013.000000T0000Z-110428T0030Z/
ONTARIO NY-
803 PM EDT WED APR 27 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ONTARIO COUNTY IS
CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT WEDNESDAY EVENING
FOR WESTERN NEW YORK.
LAT...LON 4304 7650 4301 7695 4318 7694 4325 7660
4326 7649
TIME...MOT...LOC 0003Z 241DEG 39KT 4325 7679 4312 7667
4296 7671
$$
NYC011-117-280030-
/O.CON.KBUF.SV.W.0013.000000T0000Z-110428T0030Z/
WAYNE NY-CAYUGA NY-
803 PM EDT WED APR 27 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR NORTH CENTRAL CAYUGA AND SOUTHEASTERN WAYNE COUNTIES...
AT 759 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 NORTH
ROSE TO SAVANNAH TO 9 MILES SOUTH OF SAVANNAH...OR ALONG A LINE
EXTENDING FROM 16 MILES NORTHWEST OF MONTEZUMA TO MONTEZUMA TO
CAYUGA...MOVING NORTHEAST AT 45 MPH.
SOME LOCATIONS IN THE WARNING INCLUDE...
VICTORY...
IRA...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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 TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT WEDNESDAY EVENING
FOR WESTERN NEW YORK.
&&
LAT...LON 4304 7650 4301 7695 4318 7694 4325 7660
4326 7649
TIME...MOT...LOC 0003Z 241DEG 39KT 4325 7679 4312 7667
4296 7671
$$
HIBBERT680
WWUS51 KBUF 280027
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
827 PM EDT WED APR 27 2011
NYC011-117-280037-
/O.EXP.KBUF.SV.W.0013.000000T0000Z-110428T0030Z/
WAYNE NY-CAYUGA NY-
827 PM EDT WED APR 27 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CAYUGA AND
SOUTHEASTERN WAYNE COUNTIES WILL EXPIRE AT 830 PM EDT...
AT 827 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND WERE NO
LONGER SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT WEDNESDAY EVENING
FOR WESTERN NEW YORK.
LAT...LON 4304 7650 4301 7695 4318 7694 4325 7660
4326 7649
TIME...MOT...LOC 0027Z 241DEG 39KT 4338 7648 4325 7636
4309 7640
$$
HIBBERTThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 10:21 PM EDT | Areal Flood Advisory | BUF | Ontario, Wayne | 3 hr |
| Apr 27, 1:57 PM EDT | Gale Warning | BUF | 30 hr | |
| Apr 27, 1:57 PM EDT | Small Craft Advisory | BUF | 20 hr | |
| Apr 27, 1:58 PM EDT | Flash Flood Watch | BUF | Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more | 22 hr |
| Apr 27, 1:58 PM EDT | Wind Advisory | BUF | Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more | 26 hr |
| Apr 27, 4:25 PM EDT | Special Marine Warning | BUF | 50 min | |
| Apr 27, 4:49 PM EDT | Special Weather Statement | BUF | Chautauqua | 41 min |
| Apr 27, 5:05 PM EDT | Special Marine Warning | BUF | 25 min | |
| Apr 27, 5:06 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 54 min |
| Apr 27, 5:43 PM EDT | Tornado Warning | BUF | Allegany, Cattaraugus | 32 min |
| Apr 27, 5:51 PM EDT | Special Marine Warning | BUF | 84 min | |
| Apr 27, 6:11 PM EDT | Special Weather Statement | BUF | Genesee, Livingston, Monroe, Wyoming | 64 min |
| Apr 27, 6:17 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Livingston | 43 min |
| Apr 27, 6:52 PM EDT | Special Weather Statement | BUF | Ontario, Wayne | 53 min |
| Apr 27, 6:56 PM EDT | Special Marine Warning | BUF | 94 min | |
| Apr 27, 6:56 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario, Wayne | 49 min |
| Apr 27, 7:32 PM EDT | Severe Thunderstorm Warning | BUF | Ontario | 13 min |
| Apr 27, 7:39 PM EDT | Areal Flood Advisory | BUF | Allegany, Livingston, Monroe, Ontario, Wayne | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.