Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 13, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Feb 22, 2012, 6:08 PM CST for Lawrence County, Alabama. It was in force for 23 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
- Feb 22, 2012, 6:08 PM CST (00:08 UTC)
- Expired
- Feb 22, 2012, 6:31 PM CST
- In force
- 23 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
County Lawrence County, AL
The radar
The Columbus AFB radar (KGWX), 105 km from the middle of the area, began a volume at 00:09 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
Birmingham, AL (KBMX), launched 00:00Z, 0.1 hours before the alert went out and 143 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
- 700 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 351 m²/s²
- 0-3 km storm-relative helicity
- 462 m²/s²
- Significant tornado parameter
- 2.0
- Supercell composite
- 6.7
The text
As transmitted, in the capitals the NWS used until 2016.
231 WUUS54 KHUN 230008 SVRHUN ALC079-230045- /O.NEW.KHUN.SV.W.0013.120223T0008Z-120223T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HUNTSVILLE AL 608 PM CST WED FEB 22 2012 THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN LAWRENCE COUNTY IN NORTHWEST ALABAMA... * UNTIL 645 PM CST * AT 605 PM CST...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 SOUTH OF MT HOPE...AND MOVING EAST AT 40 MPH. * LOCATIONS IMPACTED INCLUDE... WREN... SPEAKE... PRECAUTIONARY/PREPAREDNESS ACTIONS... DOPPLER RADAR HAS INDICATED SOME WEAK 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 INTERIOR ROOM. && LAT...LON 3431 8751 3447 8751 3449 8711 3430 8711 TIME...MOT...LOC 0008Z 271DEG 34KT 3437 8742 $$ SL
2 follow-up statements
689 WWUS54 KHUN 230021 SVSHUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 621 PM CST WED FEB 22 2012 ALC079-230045- /O.CON.KHUN.SV.W.0013.000000T0000Z-120223T0045Z/ LAWRENCE AL- 621 PM CST WED FEB 22 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CST FOR SOUTHEASTERN LAWRENCE COUNTY... AT 621 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WREN...MOVING EAST AT 35 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SPEAKE AND BANKHEAD NATIONAL FOREST. PRECAUTIONARY/PREPAREDNESS ACTIONS... DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 3431 8743 3447 8736 3447 8711 3430 8711 TIME...MOT...LOC 0021Z 275DEG 32KT 3436 8723 $$ SL
823 WWUS54 KHUN 230031 SVSHUN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 631 PM CST WED FEB 22 2012 ALC079-230041- /O.CAN.KHUN.SV.W.0013.000000T0000Z-120223T0045Z/ LAWRENCE AL- 631 PM CST WED FEB 22 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAWRENCE COUNTY IS CANCELED... WEATHER SERVICE DOPPLER RADAR INDICATES THE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY AND IS NO LONGER SEVERE. THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELED. HEAVY RAIN...SMALL HAIL...GUSTY WINDS...AND FREQUENT LIGHTNING ARE STILL POSSIBLE FROM THIS THUNDERSTORM. STAY INDOORS UNTIL THE STORM HAS PASSED. LAT...LON 3431 8743 3447 8736 3447 8711 3430 8711 TIME...MOT...LOC 0031Z 275DEG 32KT 3435 8712 $$ SL
The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 6:01 PM CST | Severe Thunderstorm Warning | HUN | Jackson, Madison | 29 min |
| Feb 22, 6:31 PM CST | Special Weather Statement | HUN | Madison | 29 min |
| Feb 22, 6:37 PM CST | Special Weather Statement | HUN | Morgan | 38 min |
| Feb 22, 6:38 PM CST | Special Weather Statement | HUN | Jackson | 37 min |
| Feb 22, 6:57 PM CST | Special Weather Statement | HUN | Cullman | 48 min |
| Feb 22, 7:13 PM CST | Special Weather Statement | HUN | DeKalb | 32 min |
| Feb 22, 7:22 PM CST | Special Weather Statement | HUN | Marshall | 38 min |
| Feb 22, 7:58 PM CST | Special Weather Statement | HUN | Etowah | 32 min |
| Feb 22, 8:05 PM CST | Special Weather Statement | HUN | DeKalb | 25 min |
| Feb 23, 3:03 AM CST | Wind Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 16 hr |
Nearby
Severe Thunderstorm Warnings in Alabama, 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.