Alert archive / New York / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 47, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 31, 2012, 5:38 PM EDT for Allegany County, New York. It was in force for 52 min. 2 reports 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 31, 2012, 5:38 PM EDT (21:38 UTC)
- Expired
- Jul 31, 2012, 6:30 PM EDT
- In force
- 52 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
County Allegany County, NY
The radar
The Buffalo radar (KBUF), 107 km from the middle of the area, began a volume at 21:40 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 |
|---|---|---|---|
| Jul 31, 6:02 PM EDT | HAIL 0.75 | Wellsville, NY | |
| Jul 31, 6:28 PM EDT | TSTM WND DMG | Whitesville, NY | POWERLINES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 9.6 hours before the alert went out and 265 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.
- Mixed-layer CAPE
- 666 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1048 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
090
WUUS51 KBUF 312138
SVRBUF
NYC003-312230-
/O.NEW.KBUF.SV.W.0047.120731T2138Z-120731T2230Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
538 PM EDT TUE JUL 31 2012
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN ALLEGANY COUNTY IN WESTERN NEW YORK
* UNTIL 630 PM EDT
* AT 532 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED 7 MILES NORTHWEST OF
WELLSVILLE...AND MOVING EAST AT 30 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...
WELLSVILLE...
ALFRED...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO DAMAGING WINDS...THIS STORM IS PRODUCING TORRENTIAL
DOWNPOURS AND SMALL HAIL. RAINFALL FROM THIS STORM COULD EASILY
EXCEED ONE INCH AND RESULT IN EXTENSIVE PONDING ON ROADWAYS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
&&
LAT...LON 4209 7819 4225 7819 4236 7773 4224 7773
4203 7775
TIME...MOT...LOC 2137Z 262DEG 25KT 4217 7802
$$
RSH2 follow-up statements
063
WWUS51 KBUF 312205
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
605 PM EDT TUE JUL 31 2012
NYC003-312230-
/O.CON.KBUF.SV.W.0047.000000T0000Z-120731T2230Z/
ALLEGANY NY-
605 PM EDT TUE JUL 31 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR EAST CENTRAL ALLEGANY COUNTY...
AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ARKPORT TO 7 MILES SOUTHWEST OF WELLSVILLE...MOVING
EAST AT 25 MPH.
SOME LOCATIONS IN THE WARNING INCLUDE...
ANDOVER...
WHITESVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO SMALL HAIL AND DAMAGING WINDS...THIS LINE OF STORMS
IS PRODUCING VERY HEAVY RAIN. RAIN FALL AMOUNTS OF AN INCH OR MORE
WILL BE LIKELY WITH THIS LINE OF STORMS. THIS WILL RESULT IN
WIDESPREAD PONDING ON ROADWAYS AND POSSIBLY SOME POOR DRAINAGE
FLOODING. CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH
THESE STORMS.
&&
LAT...LON 4208 7808 4229 7792 4236 7773 4224 7773
4203 7775
TIME...MOT...LOC 2203Z 255DEG 20KT 4238 7771 4204 7796
$$
RSH205
WWUS51 KBUF 312237
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
637 PM EDT TUE JUL 31 2012
NYC003-312247-
/O.EXP.KBUF.SV.W.0047.000000T0000Z-120731T2230Z/
ALLEGANY NY-
637 PM EDT TUE JUL 31 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ALLEGANY COUNTY
HAS EXPIRED...
AT 637 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.
LAT...LON 4208 7808 4229 7792 4236 7773 4224 7773
4203 7775
TIME...MOT...LOC 2205Z 255DEG 20KT 4238 7770 4204 7795
$$
RSHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:28 PM EDT | Severe Thunderstorm Warning | BUF | Livingston | 32 min |
| Jul 31, 4:50 PM EDT | Areal Flood Advisory | BUF | Genesee, Livingston, Monroe, Wyoming | 3 hr |
| Jul 31, 5:05 PM EDT | Special Weather Statement | BUF | Allegany | 55 min |
| Jul 31, 5:13 PM EDT | Special Marine Warning | BUF | 2 hr | |
| Jul 31, 5:22 PM EDT | Flash Flood Warning | BUF | Genesee, Livingston, Monroe | 3 hr |
| Jul 31, 5:31 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 59 min |
| Jul 31, 6:03 PM EDT | Severe Thunderstorm Warning | BUF | Oswego | 57 min |
| Jul 31, 6:09 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 17 min |
| Jul 31, 6:10 PM EDT | Special Marine Warning | BUF | 88 min | |
| Jul 31, 6:29 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Oswego | 61 min |
| Jul 31, 6:48 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 72 min |
Nearby
Severe Thunderstorm Warnings in New York, 2012Every severe thunderstorm warning in 2012
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.