Alert archive / West Virginia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 310, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Sep 1, 2012, 4:47 PM EDT for Berkeley County, Morgan County, West Virginia. It was in force for 43 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 1, 2012, 4:47 PM EDT (20:47 UTC)
- Expired
- Sep 1, 2012, 5:30 PM EDT
- In force
- 43 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
Counties Berkeley County, WV, Morgan County, WV
The radar
The Sterling radar (KLWX), 79 km from the middle of the area, began a volume at 20:47 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.8 hours before the alert went out and 87 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
- 1284 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1119 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
485 WUUS51 KLWX 012047 SVRLWX WVC003-065-012130- /O.NEW.KLWX.SV.W.0310.120901T2047Z-120901T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 447 PM EDT SAT SEP 1 2012 THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MORGAN COUNTY IN THE PANHANDLE OF WEST VIRGINIA... BERKELEY COUNTY IN THE PANHANDLE OF WEST VIRGINIA... * UNTIL 530 PM EDT * AT 442 PM EDT...A SEVERE THUNDERSTORM WAS DETECTED NEAR HIGHLAND RIDGE...AND WAS MOVING SOUTHEAST AT 10 MPH. THIS STORM IS CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF QUARTERS AND DAMAGING WINDS IN EXCESS OF 60 MPH. * LOCATIONS IMPACTED INCLUDE... GREENWOOD... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE. THIS STORM IS PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE INDOORS IMMEDIATELY. LAT...LON 3935 7812 3955 7835 3964 7820 3951 7791 TIME...MOT...LOC 2047Z 317DEG 9KT 3954 7821 $$ KCS
1 follow-up statement
909 WWUS51 KLWX 012112 SVSLWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 512 PM EDT SAT SEP 1 2012 WVC003-065-012130- /O.CON.KLWX.SV.W.0310.000000T0000Z-120901T2130Z/ MORGAN WV-BERKELEY WV- 512 PM EDT SAT SEP 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR BERKELEY AND MORGAN COUNTIES... AT 512 PM EDT...A SEVERE THUNDERSTORM WAS DETECTED NEAR HIGHLAND RIDGE...AND WAS MOVING SOUTHEAST AT 10 MPH. THIS STORM IS CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF QUARTERS AND DAMAGING WINDS IN EXCESS OF 60 MPH. LOCATIONS IMPACTED INCLUDE... JONES SPRINGS... TOMAHAWK... SHANGHAI... ARDEN... GERRARDSTOWN... BERKELEY... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE. LAT...LON 3935 7812 3955 7835 3964 7820 3951 7791 TIME...MOT...LOC 2112Z 317DEG 9KT 3949 7815 $$ KCS
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 3:42 PM EDT | Special Weather Statement | LWX | Berkeley, Morgan | 63 min |
| Sep 1, 3:54 PM EDT | Severe Thunderstorm Warning | LWX | Berkeley, Morgan | 51 min |
| Sep 1, 4:36 PM EDT | Flash Flood Warning | LWX | Morgan | 3 hr |
| Sep 1, 5:48 PM EDT | Special Weather Statement | LWX | Morgan | 57 min |
| Sep 1, 6:13 PM EDT | Flash Flood Warning | LWX | Morgan | 2 hr |
Nearby
Severe Thunderstorm Warnings in West Virginia, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.