Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 100, NWS Buffalo, NY

September 28, 2011Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 28, 2011, 4:15 PM EDT for Wayne County, New York. It was in force for 15 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: Sep 28, 2011, 4:15 PM EDT (20:15 UTC)
Expired: Sep 28, 2011, 4:30 PM EDT
In force: 15 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Wayne County, NY

The radar

The Buffalo radar (KBUF), 129 km from the middle of the area, began a volume at 20:16 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 12:00Z, 8.3 hours before the alert went out and 127 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 52 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.

042 
WUUS51 KBUF 282015
SVRBUF
NYC117-282030-
/O.NEW.KBUF.SV.W.0100.110928T2015Z-110928T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
415 PM EDT WED SEP 28 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 430 PM EDT

* AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  WILLIAMSON...OR 10 MILES EAST OF WEBSTER...AND MOVING NORTH AT 20
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  PULTNEYVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE 
NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO 
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY 
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 4316 7710 4316 7735 4329 7735 4330 7716
      4329 7709
TIME...MOT...LOC 2015Z 180DEG 18KT 4325 7722

$$

HIBBERT

1 follow-up statement

018 
WWUS51 KBUF 282029
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
429 PM EDT WED SEP 28 2011

NYC117-282037-
/O.EXP.KBUF.SV.W.0100.000000T0000Z-110928T2030Z/
WAYNE NY-
429 PM EDT WED SEP 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WAYNE COUNTY WILL
EXPIRE AT 430 PM EDT...

AT 427 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE WARNED 
AREA...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO 
EXPIRE. MARINERS SHOULD REMAIN AWARE OF HAZARDOUS MARINE CONDITIONS 
ALONG THE WESTERN SHORE OF WAYNE COUNTY.

LAT...LON 4316 7710 4316 7735 4329 7735 4330 7716
      4329 7709
TIME...MOT...LOC 2027Z 180DEG 18KT 4331 7722

$$

HIBBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 28, 3:46 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	29 min
Sep 28, 4:03 PM EDT	Small Craft Advisory	BUF		4 days
Sep 28, 4:10 PM EDT	Special Marine Warning	BUF		49 min
Sep 28, 6:10 PM EDT	Areal Flood Advisory	BUF	Monroe, Ontario, Wayne	3 hr

Nearby

Severe Thunderstorm Warnings in New York, 2011 Every severe thunderstorm warning in 2011

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.