Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 180, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Aug 16, 2012, 12:46 PM CDT for Choctaw County, Clarke County, Alabama. It was in force for 33 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 16, 2012, 12:46 PM CDT (17:46 UTC)
- Expired
- Aug 16, 2012, 1:19 PM CDT
- In force
- 33 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Choctaw County, AL, Clarke County, AL
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 5.8 hours before the alert went out and 181 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
- 761 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1023 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
700
WUUS54 KMOB 161746
SVRMOB
ALC023-025-161845-
/O.NEW.KMOB.SV.W.0180.120816T1746Z-120816T1845Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1246 PM CDT THU AUG 16 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
NORTHWESTERN CLARKE COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 145 PM CDT
* AT 1243 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WAS LOCATED 4 MILES SOUTHWEST OF
BUTLER...OR 6 MILES NORTHEAST OF NEEDHAM...AND MOVING SOUTHEAST AT
15 MPH.
* LOCATIONS IMPACTED INCLUDE...
TOXEY... NEEDHAM... BUTLER...
LAT...LON 3206 8810 3205 8811 3200 8810 3201 8808
3199 8806 3199 8799 3197 8795 3173 8813
3201 8842 3217 8827
TIME...MOT...LOC 1746Z 311DEG 15KT 3204 8826
$$1 follow-up statement
519
WWUS54 KMOB 161819
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
119 PM CDT THU AUG 16 2012
ALC023-025-161829-
/O.CAN.KMOB.SV.W.0180.000000T0000Z-120816T1845Z/
CHOCTAW AL-CLARKE AL-
119 PM CDT THU AUG 16 2012
...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR
NORTHWESTERN CLARKE AND CHOCTAW COUNTIES...
AT 116 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHWESTERN
CLARKE AND CHOCTAW COUNTIES HAS WEAKENED TO BELOW SEVERE LIMITS...
THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
LAT...LON 3206 8810 3205 8811 3200 8810 3201 8808
3199 8806 3199 8799 3197 8795 3173 8813
3201 8842 3217 8827
TIME...MOT...LOC 1819Z 311DEG 15KT 3195 8814
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 10:09 AM CDT | Special Marine Warning | MOB | 96 min | |
| Aug 16, 12:59 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw, Washington | 22 min |
| Aug 16, 1:36 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 22 min |
| Aug 16, 2:35 PM CDT | Severe Thunderstorm Warning | MOB | Clarke, Monroe | 30 min |
| Aug 16, 3:34 PM CDT | Severe Thunderstorm Warning | MOB | Wilcox | 29 min |
| Aug 16, 4:22 PM CDT | Special Marine Warning | MOB | 53 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.