Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 95, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 29, 2009, 1:40 PM EDT for Cayuga County, Oswego County, Wayne County, New York. It was in force for 65 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
- Aug 29, 2009, 1:40 PM EDT (17:40 UTC)
- Expired
- Aug 29, 2009, 2:45 PM EDT
- In force
- 65 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Cayuga County, NY, Oswego County, NY, Wayne County, NY
The radar
The Ft Drum radar (KTYX), 100 km from the middle of the area, began a volume at 17:41 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 nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.7 hours before the alert went out and 174 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
- 562 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 608 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KBUF 291740
SVRBUF
NYC011-075-117-291845-
/O.NEW.KBUF.SV.W.0095.090829T1740Z-090829T1845Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
140 PM EDT SAT AUG 29 2009
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN CAYUGA COUNTY IN CENTRAL NEW YORK
SOUTHWESTERN OSWEGO COUNTY IN CENTRAL NEW YORK
EASTERN WAYNE COUNTY IN WESTERN NEW YORK
* UNTIL 245 PM EDT
* AT 138 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED 20 MILES WEST OF WEEDSPORT...OR
8 MILES NORTHWEST OF WATERLOO...AND MOVING NORTHEAST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
CATO BY 225 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
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.
THIS IS A DANGEROUS STORM. 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 4322 7648 4312 7647 4311 7649 4307 7649
4302 7661 4303 7667 4302 7672 4302 7679
4319 7690 4339 7651 4323 7637
TIME...MOT...LOC 1740Z 240DEG 24KT 4301 7693
$$
JJR2 follow-up statements
000
WWUS51 KBUF 291817
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
217 PM EDT SAT AUG 29 2009
NYC011-075-117-291845-
/O.CON.KBUF.SV.W.0095.000000T0000Z-090829T1845Z/
WAYNE NY-OSWEGO NY-CAYUGA NY-
217 PM EDT SAT AUG 29 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR NORTHWESTERN CAYUGA...SOUTHWESTERN OSWEGO AND SOUTHEASTERN WAYNE
COUNTIES...
AT 216 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR CONQUEST...OR 9 MILES
NORTHEAST OF MONTEZUMA...MOVING NORTHEAST AT 30 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
CATO BY 225 PM EDT...
MERIDIAN BY 230 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 4322 7648 4312 7647 4311 7649 4307 7649
4302 7661 4303 7667 4302 7672 4303 7675
4322 7682 4339 7651 4323 7637
TIME...MOT...LOC 1817Z 240DEG 24KT 4313 7663
$$
JJR000
WWUS51 KBUF 291845
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
245 PM EDT SAT AUG 29 2009
NYC011-075-117-291855-
/O.EXP.KBUF.SV.W.0095.000000T0000Z-090829T1845Z/
WAYNE NY-OSWEGO NY-CAYUGA NY-
245 PM EDT SAT AUG 29 2009
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN
CAYUGA...SOUTHWESTERN OSWEGO AND SOUTHEASTERN WAYNE COUNTIES HAS
EXPIRED AS OF 245 PM EDT...
AT 245 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED SOMEWHAT AND WAS
NO LONGER SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 4322 7648 4312 7647 4311 7649 4307 7649
4302 7661 4303 7667 4302 7672 4303 7675
4322 7682 4339 7651 4323 7637
TIME...MOT...LOC 1844Z 240DEG 24KT 4322 7642
$$
JJRThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 1:00 PM EDT | Severe Thunderstorm Warning | BUF | Ontario, Wayne | 60 min |
| Aug 29, 4:01 PM EDT | Small Craft Advisory | BUF | 33 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.