Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 181, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Aug 16, 2012, 12:59 PM CDT for Wayne County, Mississippi; Choctaw County, Washington County, Alabama. It was in force for 22 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, 12:59 PM CDT (17:59 UTC)
- Expired
- Aug 16, 2012, 1:21 PM CDT
- In force
- 22 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Choctaw County, AL, Washington County, AL, Wayne County, MS
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 6.0 hours before the alert went out and 189 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
- 2430 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 902 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -49 m²/s²
- 0-3 km storm-relative helicity
- -58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
599
WUUS54 KMOB 161759
SVRMOB
ALC023-129-MSC153-161900-
/O.NEW.KMOB.SV.W.0181.120816T1759Z-120816T1900Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1259 PM CDT THU AUG 16 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
SOUTHWESTERN CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 200 PM CDT
* AT 1257 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WAS LOCATED 11 MILES NORTHEAST OF
WAYNESBORO...OR 10 MILES WEST OF SILAS...AND MOVING EAST AT 15 MPH.
* LOCATIONS IMPACTED INCLUDE...
SILAS... MILLRY...
LAT...LON 3184 8816 3181 8818 3176 8815 3175 8814
3176 8811 3174 8809 3166 8808 3165 8809
3162 8808 3157 8809 3169 8861 3187 8858
TIME...MOT...LOC 1759Z 280DEG 14KT 3177 8849
$$1 follow-up statement
142
WWUS54 KMOB 161821
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
121 PM CDT THU AUG 16 2012
ALC023-129-MSC153-161831-
/O.CAN.KMOB.SV.W.0181.000000T0000Z-120816T1900Z/
CHOCTAW AL-WASHINGTON AL-WAYNE MS-
121 PM CDT THU AUG 16 2012
...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR
NORTHEASTERN WAYNE...NORTHWESTERN WASHINGTON AND SOUTHWESTERN CHOCTAW
COUNTIES...
AT 116 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN
WAYNE...NORTHWESTERN WASHINGTON AND SOUTHWESTERN CHOCTAW COUNTIES HAS
WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM
WARNING HAS BEEN CANCELLED.
LAT...LON 3184 8816 3181 8818 3176 8815 3175 8814
3176 8811 3174 8809 3166 8808 3165 8809
3162 8808 3157 8809 3169 8861 3187 8858
TIME...MOT...LOC 1821Z 280DEG 14KT 3176 8839
$$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, 12:46 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw, Clarke | 33 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, 2012Severe Thunderstorm Warnings in Mississippi, 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.