Alert archive / Alabama / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 220, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Nov 22, 2011, 1:57 PM CST for Choctaw County, Alabama. It was in force for 63 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
- Nov 22, 2011, 1:57 PM CST (19:57 UTC)
- Expired
- Nov 22, 2011, 3:00 PM CST
- In force
- 63 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Choctaw County, AL
The radar
The Mobile radar (KMOB), 156 km from the middle of the area, began a volume at 19:59 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 22, 11:58 AM CST | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.0 hours before the alert went out and 174 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
- 1114 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 197 m²/s²
- 0-3 km storm-relative helicity
- 207 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
827
WUUS54 KMOB 221957
SVRMOB
ALC023-222100-
/O.NEW.KMOB.SV.W.0220.111122T1957Z-111122T2100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
157 PM CST TUE NOV 22 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 300 PM CST
* AT 150 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 12 MILES EAST OF MERIDIAN TO 15 MILES NORTHEAST OF QUITMAN TO
10 MILES SOUTH OF QUITMAN TO 11 MILES NORTHWEST OF
WAYNESBORO...AND MOVING EAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
TOXEY... PENNINGTON... NEEDHAM...
LISMAN... GILBERTOWN... BUTLER...
THE MAIN THREAT FROM THIS LINE WILL BE WIND DAMAGE DOWNING POWER
LINES AND TREES FROM 55 TO 60 MPH WIND GUSTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST TUESDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3231 8793 3229 8794 3230 8798 3228 8801
3214 8801 3214 8804 3208 8804 3205 8811
3201 8811 3199 8806 3195 8808 3196 8810
3195 8812 3192 8808 3190 8812 3187 8814
3186 8847 3198 8847 3231 8842
TIME...MOT...LOC 1955Z 255DEG 35KT 3233 8847 3229 8850
3219 8847 3209 8850 3201 8863 3191 8861
3182 8868
$$2 follow-up statements
798
WWUS54 KMOB 222031
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
231 PM CST TUE NOV 22 2011
ALC023-222100-
/O.CON.KMOB.SV.W.0220.000000T0000Z-111122T2100Z/
CHOCTAW AL-
231 PM CST TUE NOV 22 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CST
FOR NORTHERN CHOCTAW COUNTY...
AT 227 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 17 MILES NORTHEAST OF BUTLER TO 16 MILES NORTHWEST
OF CHATOM...MOVING EAST AT 40 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PENNINGTON...LAVACA...PLEASANT HILL...OAKCHIA...LOU...THORNTON
SPRINGS...NAHEOLA...TOMPKINSVILLE...ARARAT...SPRING HILL AND SLATER
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST TUESDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3231 8793 3228 8801 3215 8801 3214 8804
3208 8804 3205 8811 3201 8811 3199 8806
3195 8808 3196 8810 3195 8812 3192 8808
3190 8812 3187 8814 3187 8843 3209 8837
3231 8820
TIME...MOT...LOC 2031Z 255DEG 35KT 3232 8804 3218 8808
3192 8825 3173 8831
$$151
WWUS54 KMOB 222046
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
246 PM CST TUE NOV 22 2011
ALC023-222100-
/O.CON.KMOB.SV.W.0220.000000T0000Z-111122T2100Z/
CHOCTAW AL-
246 PM CST TUE NOV 22 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CST
FOR CENTRAL CHOCTAW COUNTY...
AT 241 PM CST...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM SLATER TO 12 MILES SOUTH OF
CHAPPELL HILL...MOVING EAST AT 35 MPH.
THE LINE OF SEVERE THUNDERSTORMS WILL OTHERWISE REMAIN OVER MAINLY
RURAL AREAS OF THE INDICATED COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST TUESDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3208 8805 3205 8811 3201 8811 3198 8806
3195 8808 3196 8810 3195 8812 3190 8812
3187 8814 3188 8829 3204 8826 3209 8817
TIME...MOT...LOC 2046Z 254DEG 30KT 3203 8807 3187 8819
3173 8821
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 22, 8:46 AM CST | Special Marine Warning | MOB | 44 min | |
| Nov 22, 9:12 AM CST | Special Marine Warning | MOB | 48 min | |
| Nov 22, 3:22 PM CST | Small Craft Advisory | MOB | 13 hr | |
| Nov 22, 4:04 PM CST | Special Marine Warning | MOB | 116 min | |
| Nov 22, 5:37 PM CST | Special Marine Warning | MOB | 53 min | |
| Nov 22, 5:46 PM CST | Severe Thunderstorm Warning | MOB | Butler, Covington, Crenshaw | 44 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2011Every severe thunderstorm warning in 2011
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.