Alert archive / Alabama / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 39, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Apr 4, 2011, 9:41 PM CDT for 5 counties in Alabama. It was in force for 64 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 4, 2011, 9:41 PM CDT (02:41 UTC)
- Expired
- Apr 4, 2011, 10:45 PM CDT
- In force
- 64 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Butler County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 4, 10:13 PM CDT | TSTM WND DMG | 3 Nw Gantt, AL | NW OF THE TOWN OF GANTT...EMA REPORTS SEVERAL AREAS WITH FALLEN TREES AND POWERLINES. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 4, 5:28 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 2.7 hours before the alert went out and 179 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
- 862 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 1607 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 251 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 9.2
The text
As transmitted, in the capitals the NWS used until 2016.
055
WUUS54 KMOB 050241
SVRMOB
ALC013-035-039-041-053-050345-
/O.NEW.KMOB.SV.W.0039.110405T0241Z-110405T0345Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
ISSUED BY NATIONAL WEATHER SERVICE NEW ORLEANS LA
941 PM CDT MON APR 4 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...
CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
THIS INCLUDES THE CITY OF EVERGREEN...
COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
THIS INCLUDES THE CITY OF ANDALUSIA...
CRENSHAW COUNTY IN SOUTH CENTRAL ALABAMA...
THIS INCLUDES THE CITY OF LUVERNE...
NORTHEASTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
* UNTIL 1045 PM CDT
* AT 935 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR RANGE...OR 16
MILES SOUTHEAST OF MONROEVILLE...AND MOVING EAST AT 70 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CASTLEBERRY...LOREE...FAIRNELSON...I65 AND US 84...BOYKIN...
NYMPH...CHINA...I65 AND AL 83...LYEFFION...JOHNSONVILLE...US 29 AND
CR 43...OWASSA...I65 AND CR 29...BROWNVILLE...BROOKLYN...WILCOX...
DEANS...PAUL...I65 AND CR 7...GARLAND...PLEASANT HOME...
STARLINGTON...COHASSETT...LOANGO...I65 AND AL 106...SHREVE...
BECK...MCKENZIE...BROOKS...GEORGIANA...RED LEVEL...AVANT...
CHAPMAN...SOUTH...RIVER FALLS...BOLLING...LIBERTYVILLE...
INDUSTRY...WALD...HEATH...GANTT...OAKY STREAK...SANFORD...
CLEARVIEW...GREEN BAY...PIGEON CREEK...BABBIE...ONYCHA...ROSE
HILL...EODA...DOZIER...OPP...ESTOTHEL...HONORAVILLE...BRANTLEY...
RUTLEDGE...BULLOCK...SAVILLE...LIVE OAK...PATSBURG...GLENWOOD...
BRADLEYTON AND PETREY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3165 8615 3164 8617 3153 8616 3153 8619
3116 8620 3114 8734 3161 8713 3196 8618
3184 8617 3181 8620 3180 8614
TIME...MOT...LOC 0241Z 248DEG 69KT 3136 8708
$$3 follow-up statements
986
WWUS54 KMOB 050258
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
ISSUED BY NATIONAL WEATHER SERVICE NEW ORLEANS LA
958 PM CDT MON APR 4 2011
ALC013-035-039-041-053-050345-
/O.CON.KMOB.SV.W.0039.000000T0000Z-110405T0345Z/
ESCAMBIA AL-COVINGTON AL-CONECUH AL-BUTLER AL-CRENSHAW AL-
958 PM CDT MON APR 4 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR CRENSHAW...SOUTHERN BUTLER...CONECUH...COVINGTON AND NORTHEASTERN
ESCAMBIA COUNTIES...
AT 954 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED. THIS STORM WAS
LOCATED NEAR JOHNSONVILLE...OR 9 MILES SOUTHEAST OF
EVERGREEN...MOVING EAST AT 70 MPH. WIND DAMAGE IS LIKELY WITH THIS
STORM.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
STARLINGTON...PAUL...I65 AND AL 106...GEORGIANA...COHASSETT...
MCKENZIE...SHREVE...CHAPMAN...BROOKS...AVANT...LOANGO...PLEASANT
HOME...BOLLING...RED LEVEL...BECK...WALD...SOUTH...INDUSTRY...
CAROLINA...RIVER FALLS...OAKY STREAK...ANDALUSIA...LIBERTYVILLE...
GANTT...HEATH...PIGEON CREEK...CLEARVIEW...SANFORD...DOZIER...ROSE
HILL...BABBIE...GREEN BAY...HONORAVILLE...EODA...ONYCHA...OPP...
RUTLEDGE...SAVILLE...BRANTLEY...LUVERNE...LIVE OAK...PATSBURG...
BULLOCK...BRADLEYTON...PETREY AND GLENWOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3165 8615 3164 8617 3153 8616 3153 8619
3116 8620 3114 8734 3161 8713 3196 8618
3184 8617 3181 8620 3180 8614
TIME...MOT...LOC 0258Z 261DEG 65KT 3134 8680
$$345
WWUS54 KMOB 050318
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
ISSUED BY NATIONAL WEATHER SERVICE NEW ORLEANS LA
1018 PM CDT MON APR 4 2011
ALC013-035-039-041-053-050345-
/O.CON.KMOB.SV.W.0039.000000T0000Z-110405T0345Z/
ESCAMBIA AL-COVINGTON AL-CONECUH AL-BUTLER AL-CRENSHAW AL-
1018 PM CDT MON APR 4 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR CRENSHAW...SOUTHERN BUTLER...CONECUH...COVINGTON AND NORTHEASTERN
ESCAMBIA COUNTIES...
AT 1011 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED. THIS STORM WAS
LOCATED NEAR RIVER FALLS...OR NEAR ANDALUSIA...MOVING EAST AT 75
MPH. WIND DAMAGE IS LIKELY WITH THIS STORM.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
DOZIER...ROSE HILL...BABBIE...GREEN BAY...HONORAVILLE...EODA...
ONYCHA...OPP...RUTLEDGE...SAVILLE...BRANTLEY...LUVERNE...LIVE OAK...
PATSBURG...BULLOCK...BRADLEYTON...PETREY AND GLENWOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3165 8615 3164 8617 3153 8616 3153 8619
3116 8620 3114 8734 3161 8713 3196 8618
3184 8617 3181 8620 3180 8614
TIME...MOT...LOC 0318Z 261DEG 65KT 3139 8638
$$330
WWUS54 KMOB 050332
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1032 PM CDT MON APR 4 2011
ALC013-050340-
/O.CAN.KMOB.SV.W.0039.000000T0000Z-110405T0345Z/
BUTLER AL-
1032 PM CDT MON APR 4 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BUTLER COUNTY IS
CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
LAT...LON 3165 8615 3164 8617 3153 8616 3153 8619
3116 8620 3117 8698 3151 8647 3191 8632
3196 8618 3184 8617 3181 8620 3180 8614
TIME...MOT...LOC 0330Z 268DEG 33KT 3190 8603 3136 8634
3116 8672
$$
ALC035-039-041-053-050345-
/O.CON.KMOB.SV.W.0039.000000T0000Z-110405T0345Z/
ESCAMBIA AL-COVINGTON AL-CONECUH AL-CRENSHAW AL-
1032 PM CDT MON APR 4 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR CRENSHAW...SOUTHEASTERN CONECUH...NORTHERN COVINGTON AND
NORTHEASTERN ESCAMBIA COUNTIES...
AT 1028 PM CDT...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM 18
MILES NORTHEAST OF LUVERNE TO 8 MILES NORTHEAST OF ANDALUSIA TO 19
MILES SOUTHWEST OF ANDALUSIA...MOVING EAST AT 45 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BULLOCK...CAROLINA...SANFORD...WIGGINS...FRIENDSHIP...LIBERTYVILLE...
BABBIE...STANLEY...HORN HILL...BLUE SPRINGS...BLAIRS...BEULAH...
OPP...ONYCHA AND GREEN BAY
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY ON THE LOWEST
FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A
ROOM SUCH AS A CLOSET OR BATHROOM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
LAT...LON 3165 8615 3164 8617 3153 8616 3153 8619
3116 8620 3117 8698 3151 8647 3191 8632
3196 8618 3184 8617 3181 8620 3180 8614
TIME...MOT...LOC 0330Z 268DEG 33KT 3190 8603 3136 8634
3116 8672
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 7:05 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw, Clarke, Washington | 55 min |
| Apr 4, 7:08 PM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 67 min |
| Apr 4, 7:30 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw, Clarke, Mobile, Washington, Wilcox | 60 min |
| Apr 4, 7:38 PM CDT | Tornado Warning | MOB | Washington | 56 min |
| Apr 4, 7:54 PM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 53 min |
| Apr 4, 8:21 PM CDT | Tornado Warning | MOB | Clarke, Monroe, Washington | 39 min |
| Apr 4, 8:30 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 3 more | 60 min |
| Apr 4, 9:44 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Covington, Escambia | 61 min |
| Apr 4, 9:47 PM CDT | Special Marine Warning | MOB | 88 min | |
| Apr 4, 10:46 PM CDT | Severe Thunderstorm Warning | MOB | Covington | 44 min |
| Apr 4, 11:36 PM CDT | Special Marine Warning | MOB | 84 min | |
| Apr 5, 5:09 AM CDT | Fire Weather Watch | MOB | Butler, Conecuh, Covington, Crenshaw, Escambia, Monroe and 1 more | 25 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.