Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 65, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 9, 2009, 12:07 PM EDT for 4 counties in New York. It was in force for 53 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
- Aug 9, 2009, 12:07 PM EDT (16:07 UTC)
- Expired
- Aug 9, 2009, 1:00 PM EDT
- In force
- 53 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Erie County, NY, Genesee County, NY, Niagara County, NY, Orleans County, NY
The radar
The Buffalo radar (KBUF), 35 km from the middle of the area, began a volume at 16:10 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 |
|---|---|---|---|
| Aug 9, 12:20 PM EDT | TSTM WND DMG | 2 E Lewiston, NY | TREES AND WIRES DOWN |
| Aug 9, 12:25 PM EDT | TSTM WND DMG | Newfane, NY | TREES/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 |
|---|---|---|---|
| Aug 9, 11:57 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.1 hours before the alert went out and 36 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
- 913 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 495 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KBUF 091607
SVRBUF
NYC029-037-063-073-091700-
/O.NEW.KBUF.SV.W.0065.090809T1607Z-090809T1700Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1207 PM EDT SUN AUG 9 2009
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN ERIE COUNTY IN WESTERN NEW YORK
NORTHERN GENESEE COUNTY IN WESTERN NEW YORK
NIAGARA COUNTY IN WESTERN NEW YORK
ORLEANS COUNTY IN WESTERN NEW YORK
* UNTIL 100 PM EDT
* AT 1206 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE OVER WESTERN LAKE ONTARIO
MOVING SOUTHEAST AT 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SANBORN BY 1220 PM EDT...
PENDLETON BY 1225 PM EDT...
AMHERST BY 1230 PM EDT...
AKRON BY 1235 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.
&&
LAT...LON 4335 7873 4335 7868 4338 7854 4338 7802
4309 7798 4287 7872 4320 7907 4327 7907
TIME...MOT...LOC 1606Z 315DEG 51KT 4329 7899
$$
SAGE2 follow-up statements
000
WWUS51 KBUF 091632
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1232 PM EDT SUN AUG 9 2009
NYC029-037-063-073-091700-
/O.CON.KBUF.SV.W.0065.000000T0000Z-090809T1700Z/
GENESEE NY-ORLEANS NY-NIAGARA NY-ERIE NY-
1232 PM EDT SUN AUG 9 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM EDT
FOR NORTHEASTERN ERIE...NIAGARA...ORLEANS AND NORTHERN GENESEE
COUNTIES...
AT 1230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THE STRONGEST STORMS RAN FROM LOCKPORT TO
MEDINA...MOVING SOUTHEAST AT 55 MPH.
THE SEVERE THUNDERSTORMS WILL BE NEAR...
CLARENCE CENTER BY 1240 PM EDT...
AKRON BY 1245 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.
&&
LAT...LON 4326 7873 4334 7845 4337 7802 4309 7798
4287 7872 4317 7903 4319 7903
TIME...MOT...LOC 1631Z 311DEG 46KT 4312 7869
$$
SAGE000
WWUS51 KBUF 091658
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1258 PM EDT SUN AUG 9 2009
NYC029-037-063-073-091708-
/O.EXP.KBUF.SV.W.0065.000000T0000Z-090809T1700Z/
GENESEE NY-ORLEANS NY-NIAGARA NY-ERIE NY-
1258 PM EDT SUN AUG 9 2009
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ERIE...NIAGARA...
ORLEANS AND NORTHERN GENESEE COUNTIES HAS EXPIRED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.
LAT...LON 4326 7873 4334 7845 4337 7802 4309 7798
4287 7872 4317 7903 4319 7903
TIME...MOT...LOC 1658Z 311DEG 46KT 4289 7833
$$
SAGEThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 10:05 AM EDT | Small Craft Advisory | BUF | 5 hr | |
| Aug 9, 11:56 AM EDT | Special Marine Warning | BUF | 42 min | |
| Aug 9, 12:46 PM EDT | Special Marine Warning | BUF | 59 min | |
| Aug 9, 12:51 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Erie, Genesee, Livingston, Monroe, Wyoming | 54 min |
| Aug 9, 1:35 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 3 more | 55 min |
| Aug 9, 1:42 PM EDT | Special Marine Warning | BUF | 33 min | |
| Aug 9, 1:57 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Livingston | 63 min |
| Aug 9, 2:07 PM EDT | Tornado Warning | BUF | Allegany, Cattaraugus | 39 min |
| Aug 9, 2:18 PM EDT | Flash Flood Warning | BUF | Allegany, Cattaraugus, Chautauqua | 84 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.