Alert archive / New York / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 88, NWS Buffalo, NY

August 16, 2007Genesee County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 16, 2007, 4:00 PM EDT for Genesee County, New York. It was in force for 45 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, 4:00 PM EDT (20:00 UTC)
Expired
Aug 16, 2007, 4:45 PM EDT
In force
45 min
Issued by
NWS Buffalo, NY
Area
Counties, with a storm outline in the text

County Genesee County, NY

The radar

The Buffalo radar (KBUF), 57 km from the middle of the area, began a volume at 20:04 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

TimeReportWhereRemark
Aug 16, 4:15 PM EDTTSTM WND DMG2 N Batavia, NYWIRES DOWN NEAR BATAVIA AIRPORT

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, 8.0 hours before the alert went out and 54 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, Buffalo Intl Airport, NY at 12:00Z on 2007-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 571 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, Buffalo Intl Airport, NY at 12:00Z on 2007-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.1939587897117Sfc1 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
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 162000
SVRBUF
NYC037-162045-
/O.NEW.KBUF.SV.W.0088.070816T2000Z-070816T2045Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 445 PM EDT

* AT 359 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
  OAKFIELD...OR ABOUT 7 MILES NORTHWEST OF BATAVIA...AND MOVING EAST
  AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BATAVIA BY 410 PM EDT...
  BYRON BY 425 PM EDT...
  LE ROY BY 430 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 4307 7794 4306 7795 4305 7794 4291 7796
      4302 7840 4310 7836 4310 7794
TIME...MOT...LOC 2000Z 279DEG 25KT 4305 7828

$$

HITCHCOCK
2 follow-up statements
000 
WWUS51 KBUF 162023
SVSBUF

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

NYC037-162045-
/O.CON.KBUF.SV.W.0088.000000T0000Z-070816T2045Z/
GENESEE NY-
422 PM EDT THU AUG 16 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR GENESEE COUNTY...

AT 419 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 STAFFORD...OR ABOUT 6 MILES EAST OF BATAVIA...MOVING
EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LE ROY BY 425 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 4309 7794 4308 7795 4303 7794 4291 7796
      4299 7818 4307 7813 4310 7794
TIME...MOT...LOC 2022Z 281DEG 27KT 4302 7804

$$

HITCHCOCK
000 
WWUS51 KBUF 162044
SVSBUF

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

NYC037-162053-
/O.EXP.KBUF.SV.W.0088.000000T0000Z-070816T2045Z/
GENESEE NY-
443 PM EDT THU AUG 16 2007

...THE SEVERE THUNDERSTORM WARNING FOR GENESEE COUNTY EXPIRES AT 445
PM EDT...

AT 443 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.

AT 415 PM EDT...LAW ENFORCEMENT REPORTED WIRES DOWN NEAR THE BATAVIA 
AIRPORT. PLEASE REPORT SEVERE WEATHER TO LAW ENFORCEMENT FOR RELAY 
TO THE NATIONAL WEATHER SERVICE IN BUFFALO.

LAT...LON 4309 7794 4308 7795 4303 7794 4291 7796
      4299 7818 4307 7813 4310 7794
TIME...MOT...LOC 2043Z 281DEG 27KT 4299 7783

$$

HITCHCOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 2:27 PM EDTSpecial Marine WarningBUF63 min
Aug 16, 2:49 PM EDTSpecial Marine WarningBUF41 min
Aug 16, 4:38 PM EDTSevere Thunderstorm WarningBUFLivingston37 min
Aug 16, 4:47 PM EDTSevere Thunderstorm WarningBUFMonroe28 min
Aug 16, 4:55 PM EDTSevere Thunderstorm WarningBUFOntario54 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.