Alert archive / New York / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 68, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Aug 9, 2009, 1:57 PM EDT for 4 counties in New York. It was in force for 63 min. 5 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, 1:57 PM EDT (17:57 UTC)
- Expired
- Aug 9, 2009, 3:00 PM EDT
- In force
- 63 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY, Livingston County, NY
The radar
The Buffalo radar (KBUF), 77 km from the middle of the area, began a volume at 18:00 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, 2:00 PM EDT | TSTM WND DMG | Ashford, NY | TREES/WIRES DOWN |
| Aug 9, 2:12 PM EDT | TORNADO 1 | Cuba, NY | EF-1 TORNADO CONFIRMED BY NWS SURVEY. PATH LENGTH 6 MILES, WIDTH 25 YDS. MAX WIND SPEED 100 MPH. NO INJURIES OR FATALITIES. |
| Aug 9, 2:12 PM EDT | TORNADO | Rushford, NY | PUBLIC REPORTED TORNADO TOUCHDOWN IN THE VICINITY OF RUSHFORD. WIDESPREAD DAMAGA REPORTED |
| Aug 9, 2:15 PM EDT | TSTM WND DMG | Black Creek, NY | 100 TO 200 TREES DOWN IN A ABOUT A 50 FOOT WIDE PATH. POSSIBLE TORNADO. WILL BE SURVEYED MONDAY MORNING. |
| Aug 9, 2:25 PM EDT | TSTM WND DMG | Hinsdale, NY | TREES/WIRES DOWN. NUMEROUS TREES/WIRES DOWN COUNTY WIDE. SOME ROADS BLOCKED BY FALLEN TREES |
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, 6.0 hours before the alert went out and 74 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 091757
SVRBUF
NYC003-009-013-051-091900-
/O.NEW.KBUF.SV.W.0068.090809T1757Z-090809T1900Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
157 PM EDT SUN AUG 9 2009
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ALLEGANY COUNTY IN WESTERN NEW YORK
CATTARAUGUS COUNTY IN WESTERN NEW YORK
SOUTHERN CHAUTAUQUA COUNTY IN WESTERN NEW YORK
SOUTHEASTERN LIVINGSTON COUNTY IN WESTERN NEW YORK
* UNTIL 300 PM EDT
* AT 156 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES EAST OF ARKPORT TO 9 MILES NORTHWEST OF
OLEAN TO 17 MILES SOUTHWEST OF JAMESTOWN...AND MOVING SOUTH AT
55 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
WESTON MILLS...ST. BONAVENTURE AND OLEAN BY 205 PM EDT...
WELLSVILLE BY 210 PM EDT...
WHITESVILLE BY 220 PM EDT...
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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.
&&
LAT...LON 4200 7977 4207 7978 4261 7755 4258 7753
4258 7765 4251 7771 4199 7775
TIME...MOT...LOC 1757Z 339DEG 48KT 4240 7757 4218 7850
4194 7950
$$
JJR2 follow-up statements
000
WWUS51 KBUF 091823
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
223 PM EDT SUN AUG 9 2009
NYC051-091832-
/O.CAN.KBUF.SV.W.0068.000000T0000Z-090809T1900Z/
LIVINGSTON NY-
223 PM EDT SUN AUG 9 2009
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LIVINGSTON COUNTY
IS CANCELLED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.
LAT...LON 4200 7949 4211 7955 4229 7842 4246 7771
4199 7775
TIME...MOT...LOC 1822Z 339DEG 48KT 4241 7753 4220 7838
4205 7939
$$
NYC003-009-013-091900-
/O.CON.KBUF.SV.W.0068.000000T0000Z-090809T1900Z/
CHAUTAUQUA NY-CATTARAUGUS NY-ALLEGANY NY-
223 PM EDT SUN AUG 9 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR ALLEGANY...SOUTHERN CATTARAUGUS AND SOUTHEASTERN CHAUTAUQUA
COUNTIES...
AT 220 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST OF ALMOND TO ISCHUA TO
PANAMA...OR ALONG A LINE EXTENDING FROM COHOCTON TO 10 MILES NORTH OF
OLEAN TO 9 MILES WEST OF JAMESTOWN...MOVING SOUTH AT 55 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
SCIO AND WESTON MILLS AND ST. BONAVENTURE BY 230 PM EDT...
WELLSVILLE AND RICHBURG AND PORTVILLE BY 235 PM EDT...
STANNARDS BY 240 PM EDT...
WHITESVILLE BY 245 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THESE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE
ACROSS MUCH OF THE SOUTHERN TIER. THIS IS AN EXTREMELY DANGEROUS
SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY
FROM WINDOWS
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.
&&
LAT...LON 4200 7949 4211 7955 4229 7842 4246 7771
4199 7775
TIME...MOT...LOC 1822Z 339DEG 48KT 4241 7753 4220 7838
4205 7939
$$
SAGE000
WWUS51 KBUF 091856
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
256 PM EDT SUN AUG 9 2009
NYC003-009-013-091906-
/O.EXP.KBUF.SV.W.0068.000000T0000Z-090809T1900Z/
CHAUTAUQUA NY-CATTARAUGUS NY-ALLEGANY NY-
256 PM EDT SUN AUG 9 2009
...THE SEVERE THUNDERSTORM WARNING FOR ALLEGANY...SOUTHERN
CATTARAUGUS AND SOUTHEASTERN CHAUTAUQUA COUNTIES WILL EXPIRE AT 300
PM EDT...
AT 256 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORMS THAT PROMPTED THE WARNING HAVE EXITED THE WARNED
AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.
LAT...LON 4200 7949 4211 7955 4229 7842 4246 7771
4199 7775
TIME...MOT...LOC 1856Z 339DEG 48KT 4198 7732 4177 7816
4163 7917
$$
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, 12:07 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 53 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, 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.