Alert archive / New York / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 17, NWS Buffalo, NY

April 12, 2008Livingston County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Apr 12, 2008, 1:43 AM EDT for Livingston County, Wyoming County, New York. It was in force for 32 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: Apr 12, 2008, 1:43 AM EDT (05:43 UTC)
Expired: Apr 12, 2008, 2:15 AM EDT
In force: 32 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Livingston County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 76 km from the middle of the area, began a volume at 05:43 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
Apr 12, 1:50 AM EDT	TSTM WND DMG	West Sparta, NY	TREES DOWN

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 00:00Z, 5.7 hours before the alert went out and 72 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: 81 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1292 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 120543
SVRBUF
NYC051-121-120615-
/O.NEW.KBUF.SV.W.0017.080412T0543Z-080412T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
143 AM EDT SAT APR 12 2008

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 215 AM EDT

* AT 140 AM 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
  PORTAGEVILLE...OR 20 MILES WEST OF DANSVILLE...AND MOVING NORTHEAST
  AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MOUNT MORRIS BY 150 AM EDT...

LAT...LON 4285 7777 4255 7771 4252 7806 4264 7811
TIME...MOT...LOC 0543Z 239DEG 53KT 4265 7792

$$

RSH

2 follow-up statements

000 
WWUS51 KBUF 120601
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
202 AM EDT SAT APR 12 2008

NYC121-120612-
/O.CAN.KBUF.SV.W.0017.000000T0000Z-080412T0615Z/
WYOMING NY-
202 AM EDT SAT APR 12 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WYOMING COUNTY IS
CANCELLED...

LAT...LON 4261 7772 4260 7773 4259 7772 4255 7771
      4254 7780 4281 7786 4281 7783 4285 7777
TIME...MOT...LOC 0602Z 239DEG 53KT 4279 7759

$$

NYC051-120615-
/O.CON.KBUF.SV.W.0017.000000T0000Z-080412T0615Z/
LIVINGSTON NY-
202 AM EDT SAT APR 12 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM EDT
FOR CENTRAL LIVINGSTON COUNTY...

AT 156 AM 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 7 MILES SOUTHEAST OF GENESEO...MOVING NORTHEAST AT 61 MPH.

LAT...LON 4261 7772 4260 7773 4259 7772 4255 7771
      4254 7780 4281 7786 4281 7783 4285 7777
TIME...MOT...LOC 0602Z 239DEG 53KT 4279 7759

$$

RSH

000 
WWUS51 KBUF 120611
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
211 AM EDT SAT APR 12 2008

NYC051-120621-
/O.EXP.KBUF.SV.W.0017.000000T0000Z-080412T0615Z/
LIVINGSTON NY-
211 AM EDT SAT APR 12 2008

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL LIVINGSTON COUNTY WILL
EXPIRE AT 215 AM EDT...

AT 211 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 4261 7772 4260 7773 4259 7772 4255 7771
      4254 7780 4281 7786 4281 7783 4285 7777
TIME...MOT...LOC 0611Z 239DEG 53KT 4285 7743

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 12:51 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	24 min
Apr 12, 1:15 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Wyoming	30 min
Apr 12, 1:34 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario	26 min
Apr 12, 1:56 AM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario, Wayne	19 min
Apr 12, 2:08 AM EDT	Special Marine Warning	BUF		37 min
Apr 12, 2:37 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Jefferson, Oswego	23 min
Apr 12, 3:11 AM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	34 min

Nearby

Severe Thunderstorm Warnings in New York, 2008 Every severe thunderstorm warning in 2008

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.