Alert archive / New York / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 102, NWS Buffalo, NY

August 25, 2007Cattaraugus County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 25, 2007, 5:39 PM EDT for Cattaraugus County, New York. It was in force for 36 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 25, 2007, 5:39 PM EDT (21:39 UTC)
Expired: Aug 25, 2007, 6:15 PM EDT
In force: 36 min
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

County Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 101 km from the middle of the area, began a volume at 21:42 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 25, 5:50 PM EDT	TSTM WND DMG	Knapp Creek, NY	TREES DOWN ON ROAD.
Aug 25, 5:55 PM EDT	TSTM WND DMG	Portville, NY	NUMEROUS TREES 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 25, 1:58 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.7 hours before the alert went out and 99 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 239 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 645 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 252140
SVRBUF
NYC009-252215-
/O.NEW.KBUF.SV.W.0102.070825T2139Z-070825T2215Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CATTARAUGUS COUNTY IN WESTERN NEW YORK

* UNTIL 615 PM EDT

* AT 538 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 9 MILES SOUTHEAST OF ALLEGANY
  PARK...OR ABOUT NEAR BRADFORD...AND MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LIMESTONE BY 545 PM EDT...
  OLEAN BY 555 PM EDT...
  WESTON MILLS BY 600 PM EDT...

IN ADDITION TO 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 4200 7830 4200 7885 4206 7885 4220 7831
TIME...MOT...LOC 2139Z 258DEG 36KT 4198 7866

$$

HITCHCOCK

2 follow-up statements

000 
WWUS51 KBUF 252153
SVSBUF

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

NYC009-252215-
/O.CON.KBUF.SV.W.0102.000000T0000Z-070825T2215Z/
CATTARAUGUS NY-
553 PM EDT SAT AUG 25 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR CATTARAUGUS COUNTY...

AT 550 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 6 MILES SOUTH OF ST.
BONAVENTURE...OR ABOUT 7 MILES EAST OF BRADFORD...MOVING EAST AT 40
MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  OLEAN BY 600 PM EDT...
  WESTON MILLS BY 600 PM EDT...
  PORTVILLE BY 605 PM EDT...

IN ADDITION TO 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 4220 7832 4217 7832 4216 7831 4200 7830
      4201 7865 4211 7864
TIME...MOT...LOC 2153Z 258DEG 36KT 4200 7847

$$

HITCHCOCK

000 
WWUS51 KBUF 252214
SVSBUF

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

NYC009-252223-
/O.EXP.KBUF.SV.W.0102.000000T0000Z-070825T2215Z/
CATTARAUGUS NY-
613 PM EDT SAT AUG 25 2007

...THE SEVERE THUNDERSTORM WARNING FOR CATTARAUGUS COUNTY EXPIRES AT
615 PM EDT...

AT 613 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 WESTERN NEW YORK.

LAT...LON 4220 7832 4217 7832 4216 7831 4200 7830
      4201 7865 4211 7864
TIME...MOT...LOC 2213Z 258DEG 36KT 4204 7821

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 9:16 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	59 min
Aug 24, 9:30 PM EDT	Severe Thunderstorm Warning	BUF	Livingston	35 min
Aug 24, 11:01 PM EDT	Special Marine Warning	BUF		89 min
Aug 24, 11:08 PM EDT	Special Marine Warning	BUF		42 min
Aug 24, 11:13 PM EDT	Special Marine Warning	BUF		64 min
Aug 24, 11:52 PM EDT	Special Marine Warning	BUF		83 min
Aug 25, 2:17 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	58 min
Aug 25, 2:39 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	66 min
Aug 25, 5:56 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	51 min

Nearby

Severe Thunderstorm Warnings in New York, 2007 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.