Alert archive / West Virginia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 236, NWS Charleston, WV
NWS Charleston, WV issued this severe thunderstorm warning at Aug 21, 2011, 4:31 PM EDT for Jackson County, Mason County, Roane County, West Virginia; Meigs County, Ohio. It was in force for 19 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
- Aug 21, 2011, 4:31 PM EDT (20:31 UTC)
- Expired
- Aug 21, 2011, 4:50 PM EDT
- In force
- 19 min
- Issued by
- NWS Charleston, WV
- Area
- Storm-based polygon
Counties Meigs County, OH, Jackson County, WV, Mason County, WV, Roane County, WV
The radar
The Charleston,WV radar (KRLX), 56 km from the middle of the area, began a volume at 20:34 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.5 hours before the alert went out and 198 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
- 1624 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 844 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
327 WUUS51 KRLX 212031 SVRRLX OHC105-WVC035-053-087-212100- /O.NEW.KRLX.SV.W.0236.110821T2031Z-110821T2100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHARLESTON WV 431 PM EDT SUN AUG 21 2011 THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... JACKSON COUNTY IN WEST VIRGINIA... THIS INCLUDES THE CITY OF RIPLEY... EAST CENTRAL MASON COUNTY IN WEST VIRGINIA... WEST CENTRAL ROANE COUNTY IN WEST VIRGINIA... SOUTHEASTERN MEIGS COUNTY IN SOUTHEAST OHIO... * UNTIL 500 PM EDT * AT 430 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 6 MILES SOUTHWEST OF RAVENSWOOD...OR 7 MILES SOUTHEAST OF RACINE...AND MOVING SOUTHEAST AT 30 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SANDYVILLE AND KENNA. THIS WILL IMPACT THE FOLLOWING INTERSTATE...I-77 BETWEEN MILE MARKERS 125 AND 147 IN WEST VIRGINIA. PRECAUTIONARY/PREPAREDNESS ACTIONS... VERY HEAVY RAIN WILL ALSO FALL FROM THIS SEVERE THUNDERSTORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY. && LAT...LON 3879 8140 3861 8156 3886 8200 3901 8187 TIME...MOT...LOC 2031Z 304DEG 26KT 3888 8183 $$ 12
1 follow-up statement
316 WWUS51 KRLX 212050 SVSRLX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON WV 450 PM EDT SUN AUG 21 2011 OHC105-WVC035-053-087-212100- /O.CAN.KRLX.SV.W.0236.000000T0000Z-110821T2100Z/ MEIGS OH-MASON WV-JACKSON WV-ROANE WV- 450 PM EDT SUN AUG 21 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MEIGS COUNTY IN SOUTHEAST OHIO...AND WEST CENTRAL ROANE...JACKSON AND EAST CENTRAL MASON COUNTIES IN WEST VIRGINIA IS CANCELLED... THE STORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS AND NO LONGER POSES A SEVERE WEATHER THREAT...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. HOWEVER...GUSTY WINDS AND PEA SIZE HAIL ARE STILL POSSIBLE. PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY. LAT...LON 3879 8140 3861 8156 3886 8200 3901 8187 TIME...MOT...LOC 2050Z 304DEG 26KT 3880 8168 $$ 12
The office that day
Everything else NWS Charleston, WV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 8:29 AM EDT | Special Weather Statement | RLX | Pleasants | 31 min |
| Aug 21, 8:59 AM EDT | Special Weather Statement | RLX | Tyler | 31 min |
| Aug 21, 1:56 PM EDT | Special Weather Statement | RLX | Putnam | 34 min |
| Aug 21, 3:35 PM EDT | Severe Thunderstorm Warning | RLX | Jackson, Mason, Wirt | 55 min |
| Aug 21, 4:41 PM EDT | Severe Thunderstorm Warning | RLX | Mason | 34 min |
| Aug 21, 5:15 PM EDT | Severe Thunderstorm Warning | RLX | Jackson, Mason, Putnam | 30 min |
| Aug 21, 5:53 PM EDT | Special Weather Statement | RLX | Putnam | 22 min |
| Aug 21, 6:12 PM EDT | Severe Thunderstorm Warning | RLX | Cabell, Kanawha, Putnam | 48 min |
| Aug 21, 7:19 PM EDT | Special Weather Statement | RLX | Nicholas | 26 min |
| Aug 21, 7:28 PM EDT | Special Weather Statement | RLX | Nicholas | 17 min |
| Aug 21, 6:49 AM EDT | Special Weather Statement | RLX | Perry | 41 min |
| Aug 21, 7:32 AM EDT | Special Weather Statement | RLX | Morgan, Perry | 58 min |
| Aug 21, 7:49 AM EDT | Special Weather Statement | RLX | Gallia | 26 min |
| Aug 21, 1:20 PM EDT | Special Weather Statement | RLX | Lawrence | 40 min |
| Aug 21, 2:15 PM EDT | Special Weather Statement | RLX | Vinton | 30 min |
| Aug 21, 2:33 PM EDT | Special Weather Statement | RLX | Morgan | 27 min |
| Aug 21, 2:41 PM EDT | Severe Thunderstorm Warning | RLX | Jackson, Vinton | 34 min |
| Aug 21, 3:05 PM EDT | Special Weather Statement | RLX | Morgan, Perry | 25 min |
| Aug 21, 3:29 PM EDT | Severe Thunderstorm Warning | RLX | Jackson, Vinton | 15 min |
Nearby
Severe Thunderstorm Warnings in West Virginia, 2011Severe Thunderstorm Warnings in Ohio, 2011Every 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.