Alert archive / New York / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 89, NWS Buffalo, NY

August 16, 2007Livingston County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 16, 2007, 4:38 PM EDT for Livingston County, New York. It was in force for 37 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: Aug 16, 2007, 4:38 PM EDT (20:38 UTC)
Expired: Aug 16, 2007, 5:15 PM EDT
In force: 37 min
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

County Livingston County, NY

The radar

The Buffalo radar (KBUF), 89 km from the middle of the area, began a volume at 20:40 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 16, 4:53 PM EDT	TSTM WND DMG	Lima, NY	LARGE TREE LIMBS DOWN ON WIRES

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, 8.6 hours before the alert went out and 86 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: 571 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 893 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 162039
SVRBUF
NYC051-162115-
/O.NEW.KBUF.SV.W.0089.070816T2038Z-070816T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
438 PM EDT THU AUG 16 2007

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LIVINGSTON COUNTY IN WESTERN NEW YORK

* UNTIL 515 PM EDT

* AT 436 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
  AVON...OR ABOUT 7 MILES NORTH OF GENESEO...AND MOVING EAST AT 30
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LIMA BY 455 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 4294 7758 4293 7756 4285 7758 4285 7759
      4284 7758 4280 7759 4280 7760 4288 7790
      4295 7787
TIME...MOT...LOC 2038Z 276DEG 27KT 4290 7778

$$

HITCHCOCK

2 follow-up statements

000 
WWUS51 KBUF 162052
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
452 PM EDT THU AUG 16 2007

NYC051-162115-
/O.CON.KBUF.SV.W.0089.000000T0000Z-070816T2115Z/
LIVINGSTON NY-
452 PM EDT THU AUG 16 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT 
FOR NORTHERN LIVINGSTON COUNTY...

AT 449 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 NEAR LIMA...OR ABOUT 10 MILES NORTHEAST OF GENESEO...MOVING
EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LIMA AND LIVONIA BY 500 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 4293 7756 4285 7758 4285 7759 4280 7759
      4285 7774 4295 7774 4294 7758
TIME...MOT...LOC 2052Z 276DEG 27KT 4289 7764

$$

HITCHCOCK

000 
WWUS51 KBUF 162107
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
507 PM EDT THU AUG 16 2007

NYC051-162117-
/O.EXP.KBUF.SV.W.0089.000000T0000Z-070816T2115Z/
LIVINGSTON NY-
507 PM EDT THU AUG 16 2007

...THE SEVERE THUNDERSTORM WARNING FOR LIVINGSTON COUNTY EXPIRES AT
515 PM EDT...

AT 507 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 LAW ENFORCEMENT FOR RELAY TO THE 
NATIONAL WEATHER SERVICE IN BUFFALO.

LAT...LON 4293 7756 4285 7758 4285 7759 4280 7759
      4285 7774 4295 7774 4294 7758
TIME...MOT...LOC 2107Z 276DEG 27KT 4288 7749

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 2:27 PM EDT	Special Marine Warning	BUF		63 min
Aug 16, 2:49 PM EDT	Special Marine Warning	BUF		41 min
Aug 16, 4:00 PM EDT	Severe Thunderstorm Warning	BUF	Genesee	45 min
Aug 16, 4:47 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	28 min
Aug 16, 4:55 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	54 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.