Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 57, NWS Buffalo, NY

July 26, 2009Cayuga County, Oswego County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 26, 2009, 3:12 PM EDT for Cayuga County, Oswego County, Wayne County, New York. It was in force for 50 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
Jul 26, 2009, 3:12 PM EDT (19:12 UTC)
Expired
Jul 26, 2009, 4:02 PM EDT
In force
50 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 19:15 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

TimeReportWhereRemark
Jul 26, 3:16 PM EDTHAIL 0.885 N Clyde, NY
Jul 26, 3:27 PM EDTTSTM WND DMG1 S Wolcott, NYTREES AND POWER LINES DOWN

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, 7.2 hours before the alert went out and 165 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.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2009-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 267 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2009-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
267 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KBUF 261912
SVRBUF
NYC011-075-117-262015-
/O.NEW.KBUF.SV.W.0057.090726T1912Z-090726T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
312 PM EDT SUN JUL 26 2009

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CAYUGA COUNTY IN CENTRAL NEW YORK
  WEST CENTRAL OSWEGO COUNTY IN CENTRAL NEW YORK
  EASTERN WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 415 PM EDT

* AT 309 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  CLYDE...OR 8 MILES NORTHWEST OF MONTEZUMA...AND MOVING NORTHEAST AT
  30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WOLCOTT BY 335 PM EDT  
  FAIR HAVEN BY 355 PM EDT  
  OSWEGO BY 410 PM EDT...

LAT...LON 4302 7680 4301 7688 4307 7698 4332 7684
      4332 7679 4335 7675 4335 7670 4341 7665
      4347 7654 4346 7652 4340 7637
TIME...MOT...LOC 1911Z 214DEG 28KT 4309 7685

$$

SFM
2 follow-up statements
000 
WWUS51 KBUF 261938
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
338 PM EDT SUN JUL 26 2009

NYC011-075-117-262015-
/O.CON.KBUF.SV.W.0057.000000T0000Z-090726T2015Z/
WAYNE NY-OSWEGO NY-CAYUGA NY-
338 PM EDT SUN JUL 26 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN CAYUGA...WEST CENTRAL OSWEGO AND NORTHEASTERN WAYNE
COUNTIES...

AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED 8 MILES SOUTH OF FAIR HAVEN...OR 15 MILES WEST OF 
FULTON...MOVING NORTHEAST AT 30 MPH. THE STORM HAS A HISTORY OF 
NICKEL SIZE HAIL AND DAMAGING WINDS.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  FAIR HAVEN BY 345 PM EDT...
  HANNIBAL BY 350 PM EDT...
  MINETTO BY 400 PM EDT...

LAT...LON 4324 7662 4323 7668 4330 7681 4332 7684
      4332 7679 4335 7675 4335 7670 4341 7665
      4347 7654 4346 7652 4340 7637
TIME...MOT...LOC 1937Z 214DEG 28KT 4328 7671

$$

SFM
000 
WWUS51 KBUF 262002
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
402 PM EDT SUN JUL 26 2009

NYC011-075-117-262012-
/O.CAN.KBUF.SV.W.0057.000000T0000Z-090726T2015Z/
WAYNE NY-OSWEGO NY-CAYUGA NY-
402 PM EDT SUN JUL 26 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CAYUGA...WEST
CENTRAL OSWEGO AND NORTHEASTERN WAYNE COUNTIES IS CANCELLED...

THE STORM HAS MOVED OUT INTO LAKE ONTARIO AND IS NO LONGER A THREAT 
TO LAND AREAS.

LAT...LON 4324 7662 4323 7668 4330 7681 4332 7684
      4332 7679 4335 7675 4335 7670 4341 7665
      4347 7654 4346 7652 4340 7637
TIME...MOT...LOC 2002Z 214DEG 28KT 4347 7653

$$

SFM

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 25, 8:00 PM EDTSevere Thunderstorm WarningBUFMonroe, Ontario, Wayne41 min
Jul 25, 8:07 PM EDTSpecial Marine WarningBUF76 min
Jul 25, 9:35 PM EDTSpecial Marine WarningBUF55 min
Jul 26, 1:51 PM EDTSevere Thunderstorm WarningBUFGenesee, Wyoming39 min
Jul 26, 3:45 PM EDTSpecial Marine WarningBUF57 min
Jul 26, 4:48 PM EDTAreal Flood AdvisoryBUFCayuga, Ontario, Wayne117 min
Jul 26, 5:02 PM EDTSevere Thunderstorm WarningBUFCayuga, Ontario, Wayne58 min
Jul 26, 5:45 PM EDTSevere Thunderstorm WarningBUFCayuga35 min
Jul 26, 6:05 PM EDTSevere Thunderstorm WarningBUFOswego55 min
Jul 26, 6:59 PM EDTTornado WarningBUFCattaraugus46 min
Jul 26, 7:24 PM EDTSpecial Marine WarningBUF48 min
Jul 26, 7:46 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus37 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.