Alert archive / New York / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 71, NWS Buffalo, NY

July 9, 2007Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 9, 2007, 2:33 AM EDT for Wayne County, New York. It was in force for 27 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: Jul 9, 2007, 2:33 AM EDT (06:33 UTC)
Expired: Jul 9, 2007, 3:00 AM EDT
In force: 27 min
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

County Wayne County, NY

The radar

The Ft Drum radar (KTYX), 115 km from the middle of the area, began a volume at 06:34 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 nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 6.6 hours before the alert went out and 150 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: 1033 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1283 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 297 m²/s²
0-3 km storm-relative helicity: 323 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 8.6

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 090633
SVRBUF
NYC117-090700-
/O.NEW.KBUF.SV.W.0071.070709T0633Z-070709T0700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
233 AM EDT MON JUL 9 2007

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 300 AM EDT

* AT 226 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS 
  WERE LOCATED ALONG A LINE EXTENDING FROM 12 MILES NORTHWEST OF 
  OSWEGO TO 22 MILES NORTHWEST OF MONTEZUMA...AND MOVING EAST AT 45
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WOLCOTT

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. 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 4308 7674 4306 7703 4327 7697 4327 7697
      4325 7697 4324 7695 4327 7693 4328 7695
      4330 7673

$$

RSH

2 follow-up statements

000 
WWUS51 KBUF 090647
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
246 AM EDT MON JUL 9 2007

NYC117-090700-
/O.CON.KBUF.SV.W.0071.000000T0000Z-070709T0700Z/
WAYNE NY-
246 AM EDT MON JUL 9 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM EDT
FOR WAYNE COUNTY...

AT 238 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS 
WERE LOCATED ALONG A LINE EXTENDING FROM OSWEGO TO 15 MILES NORTH OF 
MONTEZUMA...MOVING EAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE OVER...
  NORTHEASTERN WAYNE COUNTY.

LAT...LON 4308 7674 4306 7703 4327 7697 4327 7697
      4325 7697 4324 7695 4327 7693 4328 7695
      4330 7673

$$

RSH

000 
WWUS51 KBUF 090700
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
300 AM EDT MON JUL 9 2007

NYC117-090710-
/O.EXP.KBUF.SV.W.0071.000000T0000Z-070709T0700Z/
WAYNE NY-
300 AM EDT MON JUL 9 2007

...THE SEVERE THUNDERSTORM WARNING FOR WAYNE COUNTY EXPIRED AT 300 AM
EDT...

AT 300 AM 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.

LAT...LON 4308 7674 4306 7703 4327 7697 4327 7697
      4325 7697 4324 7695 4327 7693 4328 7695
      4330 7673

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 11:51 PM EDT	Special Marine Warning	BUF		84 min
Jul 9, 1:52 AM EDT	Special Marine Warning	BUF		53 min
Jul 9, 2:10 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga	50 min
Jul 9, 2:13 AM EDT	Severe Thunderstorm Warning	BUF	Oswego	62 min
Jul 9, 2:30 AM EDT	Special Marine Warning	BUF		60 min
Jul 9, 2:53 AM EDT	Special Marine Warning	BUF		52 min
Jul 9, 3:15 AM EDT	Severe Thunderstorm Warning	BUF	Oswego	30 min
Jul 9, 3:23 AM EDT	Severe Thunderstorm Warning	BUF	Lewis	67 min
Jul 9, 4:12 PM EDT	Special Marine Warning	BUF		33 min
Jul 9, 4:23 PM EDT	Special Marine Warning	BUF		67 min
Jul 9, 4:34 PM EDT	Special Marine Warning	BUF		56 min
Jul 9, 5:34 PM EDT	Special Marine Warning	BUF		50 min
Jul 9, 5:43 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	62 min
Jul 9, 6:28 PM EDT	Special Marine Warning	BUF		81 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.