Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 27, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 1, 2012, 11:56 AM CST for Covington County, Alabama. 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
- Mar 1, 2012, 11:56 AM CST (17:56 UTC)
- Expired
- Mar 1, 2012, 12:15 PM CST
- In force
- 19 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Covington County, AL
The radar
The Eglin Afb radar (KEVX), 69 km from the middle of the area, began a volume at 17:58 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, 5.9 hours before the alert went out and 202 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
- 240 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 499 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 170 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
285
WUUS54 KMOB 011756
SVRMOB
ALC039-011815-
/O.NEW.KMOB.SV.W.0027.120301T1756Z-120301T1815Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1156 AM CST THU MAR 1 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEAST COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
* UNTIL 1215 PM CST
* AT 1153 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED 9 MILES NORTHEAST OF FLORALA...
OR 7 MILES SOUTH OF ONYCHA...AND MOVING EAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
BLUE SPRINGS... GREEN BAY...
&&
LAT...LON 3106 8619 3108 8637 3122 8631 3122 8619
3111 8618
TIME...MOT...LOC 1756Z 281DEG 33KT 3112 8621
$$2 follow-up statements
010
WWUS54 KMOB 011808
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1208 PM CST THU MAR 1 2012
ALC039-011815-
/O.CON.KMOB.SV.W.0027.000000T0000Z-120301T1815Z/
COVINGTON AL-
1208 PM CST THU MAR 1 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CST
FOR SOUTHEASTERN COVINGTON COUNTY...
AT 1202 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED 11 MILES SOUTHEAST OF
OPP...MOVING EAST AT 40 MPH.
THE STORM WILL EXIT THE COUNTY BY 1215 PM CST.
LAT...LON 3106 8619 3107 8628 3114 8628 3122 8619
3111 8618
TIME...MOT...LOC 1808Z 262DEG 34KT 3114 8611
$$277
WWUS54 KMOB 011811
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1211 PM CST THU MAR 1 2012
ALC039-011821-
/O.EXP.KMOB.SV.W.0027.000000T0000Z-120301T1815Z/
COVINGTON AL-
1211 PM CST THU MAR 1 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COVINGTON COUNTY
WILL BE ALLOWED TO EXPIRE AT 1215 PM CST...
THE SEVERE THUNDERSTORM HAS SINCE MOVED EAST OF THE COUNTY.
LAT...LON 3106 8619 3107 8628 3114 8628 3122 8619
3111 8618
TIME...MOT...LOC 1811Z 180DEG 0KT 3113 8618
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 9:08 AM CST | Areal Flood Advisory | MOB | Baldwin, Clarke, Monroe, Washington | 112 min |
| Mar 1, 9:51 AM CST | Severe Thunderstorm Warning | MOB | Conecuh, Escambia | 54 min |
| Mar 1, 11:38 AM CST | Severe Thunderstorm Warning | MOB | Butler, Conecuh, Monroe | 22 min |
| Mar 1, 3:50 PM CST | Dense Fog Advisory | MOB | 15 hr | |
| Mar 1, 3:55 PM CST | Marine Dense Fog Advisory | MOB | 20 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.