Alert archive / New York / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 101, NWS Buffalo, NY

August 25, 2007Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 25, 2007, 2:39 PM EDT for Lewis County, New York. It was in force for 66 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 25, 2007, 2:39 PM EDT (18:39 UTC)
Expired
Aug 25, 2007, 3:45 PM EDT
In force
66 min
Issued by
NWS Buffalo, NY
Area
Counties, with a storm outline in the text

County Lewis County, NY

The radar

The Ft Drum radar (KTYX), 24 km from the middle of the area, began a volume at 18:41 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 25, 1:58 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 6.7 hours before the alert went out and 170 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, Albany, NY at 12:00Z on 2007-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1654 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, Albany, NY at 12:00Z on 2007-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.193958Sfc1 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
1654 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
643 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.7

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 251840
SVRBUF
NYC049-251945-
/O.NEW.KBUF.SV.W.0101.070825T1839Z-070825T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
239 PM EDT SAT AUG 25 2007

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN LEWIS COUNTY IN CENTRAL NEW YORK

* UNTIL 345 PM EDT

* AT 235 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 16
  MILES SOUTHWEST OF HIGHMARKET...OR ABOUT NEAR CAMDEN...AND MOVING
  NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CONSTABLEVILLE BY 300 PM EDT...
  PORT LEYDEN AND LYONS FALLS BY 305 PM EDT...
  GREIG BY 330 PM EDT...

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 4342 7554 4347 7576 4350 7575 4351 7577
      4366 7577 4394 7515 4361 7512
TIME...MOT...LOC 1839Z 240DEG 39KT 4341 7566

$$

HITCHCOCK
2 follow-up statements
000 
WWUS51 KBUF 251913
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
312 PM EDT SAT AUG 25 2007

NYC049-251945-
/O.CON.KBUF.SV.W.0101.000000T0000Z-070825T1945Z/
LEWIS NY-
312 PM EDT SAT AUG 25 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT 
FOR SOUTHERN LEWIS COUNTY...

AT 309 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 7 MILES SOUTHWEST OF HIGHMARKET...OR ABOUT 14 MILES NORTH OF
CAMDEN...MOVING NORTHEAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HIGHMARKET BY 320 PM EDT...
  TURIN BY 325 PM EDT...
  GREIG AND BRANTINGHAM BY 340 PM EDT...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 4342 7554 4347 7576 4350 7575 4351 7577
      4366 7577 4394 7515 4361 7512
TIME...MOT...LOC 1912Z 240DEG 39KT 4355 7562

$$

HITCHCOCK
000 
WWUS51 KBUF 251941
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
340 PM EDT SAT AUG 25 2007

NYC049-251950-
/O.EXP.KBUF.SV.W.0101.000000T0000Z-070825T1945Z/
LEWIS NY-
340 PM EDT SAT AUG 25 2007

...THE SEVERE THUNDERSTORM WARNING FOR LEWIS COUNTY EXPIRES AT 345 PM
EDT...

AT 340 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE WARNED AREA...
THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

PLEASE REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT FOR RELAY TO 
THE NATIONAL WEATHER SERVICE IN BUFFALO.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT 
SATURDAY EVENING FOR PORTIONS OF CENTRAL AND NORTHERN NEW YORK.

LAT...LON 4342 7554 4347 7576 4350 7575 4351 7577
      4366 7577 4394 7515 4361 7512
TIME...MOT...LOC 1940Z 240DEG 39KT 4370 7525

$$

HITCHCOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 9:16 PM EDTSevere Thunderstorm WarningBUFOntario59 min
Aug 24, 9:30 PM EDTSevere Thunderstorm WarningBUFLivingston35 min
Aug 24, 11:01 PM EDTSpecial Marine WarningBUF89 min
Aug 24, 11:08 PM EDTSpecial Marine WarningBUF42 min
Aug 24, 11:13 PM EDTSpecial Marine WarningBUF64 min
Aug 24, 11:52 PM EDTSpecial Marine WarningBUF83 min
Aug 25, 2:17 PM EDTSevere Thunderstorm WarningBUFOswego58 min
Aug 25, 5:39 PM EDTSevere Thunderstorm WarningBUFCattaraugus36 min
Aug 25, 5:56 PM EDTSevere Thunderstorm WarningBUFAllegany51 min

Nearby

Severe Thunderstorm Warnings in New York, 2007Every severe thunderstorm warning in 2007

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.