Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 42, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 30, 2012, 5:39 PM CDT for Covington County, Alabama. It was in force for 40 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
- Mar 30, 2012, 5:39 PM CDT (22:39 UTC)
- Expired
- Mar 30, 2012, 6:19 PM CDT
- In force
- 40 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Covington County, AL
The radar
The Eglin Afb radar (KEVX), 85 km from the middle of the area, began a volume at 22:41 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.7 hours before the alert went out and 217 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
- 7 J/kg
- Mixed-layer CIN
- -155 J/kg
- Mixed-layer LCL
- 1243 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
413
WUUS54 KMOB 302239
SVRMOB
ALC039-302330-
/O.NEW.KMOB.SV.W.0042.120330T2239Z-120330T2330Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
539 PM CDT FRI MAR 30 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
* UNTIL 630 PM CDT
* AT 536 PM CDT...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 9 MILES
SOUTH OF ANDALUSIA...OR 4 MILES SOUTH OF LIBERTYVILLE...AND MOVING
EAST AT 20 MPH.
* LOCATIONS IMPACTED INCLUDE...
HORN HILL... SANFORD... OPP...
ONYCHA... LIBERTYVILLE... CAROLINA...
BABBIE...
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 3112 8651 3124 8656 3140 8619 3134 8619
3117 8619
TIME...MOT...LOC 2239Z 249DEG 19KT 3119 8646
$$1 follow-up statement
364
WWUS54 KMOB 302319
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
619 PM CDT FRI MAR 30 2012
ALC039-302329-
/O.CAN.KMOB.SV.W.0042.000000T0000Z-120330T2330Z/
COVINGTON AL-
619 PM CDT FRI MAR 30 2012
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL COVINGTON COUNTY IS
CANCELLED...
LAT...LON 3112 8651 3124 8656 3140 8619 3134 8619
3117 8619
TIME...MOT...LOC 2319Z 249DEG 19KT 3127 8623
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 2:55 AM CDT | Dense Fog Advisory | MOB | Butler, Conecuh, Covington, Crenshaw, Escambia, Monroe | 6 hr |
| Mar 30, 1:54 PM CDT | Severe Thunderstorm Warning | MOB | Conecuh | 28 min |
| Mar 30, 3:13 PM CDT | Severe Thunderstorm Warning | MOB | Covington, Crenshaw | 20 min |
| Mar 30, 5:47 PM CDT | Tornado Warning | MOB | Covington | 31 min |
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.