Alert archive / New York / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 73, NWS Buffalo, NY

July 9, 2007Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 9, 2007, 3:23 AM EDT for Lewis County, New York. It was in force for 67 min. 1 report 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 9, 2007, 3:23 AM EDT (07:23 UTC)
Expired: Jul 9, 2007, 4:30 AM EDT
In force: 67 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), 16 km from the middle of the area, began a volume at 07:23 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
Jul 9, 4:15 AM EDT	TSTM WND DMG	Port Leyden, NY	WIRES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 7.4 hours before the alert went out and 175 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: 1204 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1212 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 090724
SVRBUF
NYC049-090830-
/O.NEW.KBUF.SV.W.0073.070709T0723Z-070709T0830Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 430 AM EDT

* AT 320 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 15 MILES WEST OF HIGHMARKET 
  TO 30 MILES SOUTHWEST OF HIGHMARKET...AND MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  LOWVILLE AND HIGHMARKET BY 335 AM EDT...

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 4383 7574 4350 7575 4345 7552 4362 7517
      4385 7516

$$

RSH

2 follow-up statements

000 
WWUS51 KBUF 090802
SVSBUF

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

NYC049-090830-
/O.CON.KBUF.SV.W.0073.000000T0000Z-070709T0830Z/
LEWIS NY-
402 AM EDT MON JUL 9 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 AM EDT
FOR LEWIS COUNTY...

AT 400 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 CONSTABLEVILLE TO 9 MILES 
EAST OF LOWVILLE...MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE OVER...
  SOUTHEASTERN LEWIS COUNTY.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 4383 7574 4350 7575 4345 7552 4362 7517
      4385 7516

$$

RSH

000 
WWUS51 KBUF 090831
SVSBUF

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

NYC049-090841-
/O.EXP.KBUF.SV.W.0073.000000T0000Z-070709T0830Z/
LEWIS NY-
431 AM EDT MON JUL 9 2007

...THE SEVERE THUNDERSTORM WARNING FOR LEWIS COUNTY EXPIRED AT 430 AM
EDT...

AT 431 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. WHILE THE 
ORIGINAL SEVERE STORMS HAVE EXITED THE COUNTY...ADDITIONAL STORMS 
WILL BRING MORE HEAVY RAIN AND POSSIBLY WIND GUSTS OVER 40 MPH TO 
THE COUNTY THROUGH 5:30 AM EDT.

LAT...LON 4383 7574 4350 7575 4345 7552 4362 7517
      4385 7516

$$

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, 2:33 AM EDT	Severe Thunderstorm Warning	BUF	Wayne	27 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.