Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 206, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Oct 18, 2012, 2:39 AM CDT for Choctaw County, Clarke County, Alabama. It was in force for 51 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
- Oct 18, 2012, 2:39 AM CDT (07:39 UTC)
- Expired
- Oct 18, 2012, 3:30 AM CDT
- In force
- 51 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Choctaw County, AL, Clarke County, AL
The radar
The Mobile radar (KMOB), 149 km from the middle of the area, began a volume at 07:43 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, 7.7 hours before the alert went out and 175 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1776 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
138
WUUS54 KMOB 180739
SVRMOB
ALC023-025-180830-
/O.NEW.KMOB.SV.W.0206.121018T0739Z-121018T0830Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
239 AM CDT THU OCT 18 2012
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
NORTHERN CLARKE COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 330 AM CDT
* AT 238 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 8 MILES
SOUTHEAST OF BUTLER...OR 8 MILES WEST OF PUTNAM...AND MOVING EAST
AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
THOMASVILLE... FULTON...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.
TO REPORT SEVERE WEATHER...CALL (800) 284-9059.
&&
LAT...LON 3212 8819 3208 8805 3206 8807 3207 8810
3205 8811 3200 8810 3201 8808 3199 8806
3200 8772 3198 8767 3174 8768 3186 8827
TIME...MOT...LOC 0739Z 291DEG 37KT 3198 8816
$$1 follow-up statement
309
WWUS54 KMOB 180813
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
313 AM CDT THU OCT 18 2012
ALC023-180822-
/O.CAN.KMOB.SV.W.0206.000000T0000Z-121018T0830Z/
CHOCTAW AL-
313 AM CDT THU OCT 18 2012
...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR CENTRAL
CHOCTAW COUNTY...
AT 310 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR CENTRAL
CHOCTAW COUNTY HAS MOVED OUT OF THE COUNTY...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.
ADDITIONAL THUNDERSTORMS ARE CURRENTLY MOVING ACROSS CENTRAL CHOCTAW
COUNTY...WITH THE PRIMARY THREATS BEING DANGEROUS LIGHTNING AND
HEAVY DOWNPOURS.
LAT...LON 3197 8767 3174 8768 3182 8809 3183 8810
3199 8803 3200 8770
TIME...MOT...LOC 0812Z 283DEG 36KT 3190 8784
$$
ALC025-180830-
/O.CON.KMOB.SV.W.0206.000000T0000Z-121018T0830Z/
CLARKE AL-
313 AM CDT THU OCT 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR NORTHERN CLARKE COUNTY...
AT 310 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 8 MILES WEST OF
THOMASVILLE...OR 7 MILES SOUTHEAST OF HOLTAMVILLE...MOVING EAST AT 40
MPH.
LOCATIONS IMPACTED INCLUDE...
THOMASVILLE... FULTON...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.
TO REPORT SEVERE WEATHER...CALL (800) 284-9059.
&&
LAT...LON 3197 8767 3174 8768 3182 8809 3183 8810
3199 8803 3200 8770
TIME...MOT...LOC 0812Z 283DEG 36KT 3190 8784
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 1:56 AM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 49 min |
| Oct 18, 3:11 AM CDT | Areal Flood Advisory | MOB | Choctaw | 2 hr |
| Oct 18, 4:59 AM CDT | Areal Flood Advisory | MOB | Clarke | 2 hr |
| Oct 18, 8:23 AM CDT | Special Marine Warning | MOB | 97 min | |
| Oct 18, 10:19 AM CDT | Special Marine Warning | MOB | 41 min | |
| Oct 18, 11:01 AM CDT | Special Marine Warning | MOB | 51 min | |
| Oct 18, 2:28 PM CDT | Fire Weather Watch | MOB | Butler, Conecuh, Covington, Crenshaw, Escambia | 15 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.