Alert archive / Alabama / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 8, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Feb 1, 2011, 6:38 PM CST for Covington County, Escambia County, Alabama; Okaloosa County, Florida. It was in force for 52 min. 2 reports 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
- Feb 1, 2011, 6:38 PM CST (00:38 UTC)
- Expired
- Feb 1, 2011, 7:30 PM CST
- In force
- 52 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Covington County, AL, Escambia County, AL, Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 77 km from the middle of the area, began a volume at 00:38 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 1, 7:07 PM CST | TSTM WND DMG | Lockhart, AL | SEVERAL TREES REPORTED BLOWN DOWN AROUND THE LOCKHART AREA. |
| Feb 1, 7:12 PM CST | TSTM WND DMG | Florala, AL | DAMAGE TO THE ROOF OF A LOCAL BUSINESS. TREES AND A FEW POWER POLES BLOWN DOWN. |
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 |
|---|---|---|---|
| Feb 1, 1:03 PM CST | Tornado Watch | SPC | 7 hr |
| Feb 1, 6:19 PM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.6 hours before the alert went out and 224 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
- 64 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 453 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 326 m²/s²
- 0-3 km storm-relative helicity
- 355 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
011
WUUS54 KMOB 020038
SVRMOB
ALC039-053-FLC091-020130-
/O.NEW.KMOB.SV.W.0008.110202T0038Z-110202T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
638 PM CST TUE FEB 1 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
SOUTHERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
THIS INCLUDES THE CITIES OF...OPP...FLORALA...
SOUTHEASTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
* UNTIL 730 PM CST
* AT 633 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 18 MILES SOUTHWEST OF ANDALUSIA TO 20 MILES WEST OF FLORALA TO
14 MILES NORTHWEST OF CRESTVIEW...AND MOVING EAST AT 55 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
LIBERTYVILLE...CAROLINA AND LAUREL HILL AROUND 645 PM CST...
SANFORD...HORN HILL...LOCKHART AND FLORALA AROUND 650 PM CST...
BABBIE...OPP AND ONYCHA AROUND 655 PM CST...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST TUESDAY EVENING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 1100 PM CST TUESDAY EVENING FOR SOUTH CENTRAL
ALABAMA AND NORTHWEST FLORIDA.
&&
LAT...LON 3098 8638 3080 8640 3079 8678 3092 8678
3099 8672 3114 8686 3119 8668 3141 8619
3100 8617
TIME...MOT...LOC 0038Z 248DEG 65KT 3118 8663 3109 8656
3096 8660
$$3 follow-up statements
316
WWUS54 KMOB 020053
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
653 PM CST TUE FEB 1 2011
ALC053-020101-
/O.CAN.KMOB.SV.W.0008.000000T0000Z-110202T0130Z/
ESCAMBIA AL-
653 PM CST TUE FEB 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ESCAMBIA COUNTY
IS CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST TUESDAY EVENING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 1100 PM CST TUESDAY EVENING FOR SOUTH CENTRAL
ALABAMA AND NORTHWEST FLORIDA.
LAT...LON 3098 8638 3080 8640 3079 8678 3092 8678
3093 8677 3111 8655 3120 8666 3141 8619
3100 8617
TIME...MOT...LOC 0051Z 242DEG 62KT 3129 8641 3121 8638
3103 8642 3083 8668
$$
ALC039-FLC091-020130-
/O.CON.KMOB.SV.W.0008.000000T0000Z-110202T0130Z/
COVINGTON AL-OKALOOSA FL-
653 PM CST TUE FEB 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CST
FOR NORTHERN OKALOOSA AND SOUTHERN COVINGTON COUNTIES...
AT 647 PM CST...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS
OVER 60 MPH. THESE STORMS WERE ALONG A LINE EXTENDING FROM
ANDALUSIA TO 9 MILES SOUTH OF ANDALUSIA TO 11 MILES WEST OF
CRESTVIEW...MOVING NORTHEAST AT 60 MPH.
THE GREATEST THREAT ARE WIND DAMAGING WIND GUSTS TO BETWEEN 55 AND
65 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
GARDEN CITY...COUNTY LINE AND BLAIRS AROUND 700 PM CST...
SVEA AND LOCKHART AROUND 705 PM CST...
MCRAE AND FLORALA AROUND 710 PM CST...
HOWELLS AROUND 720 PM CST...
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 800 PM CST TUESDAY EVENING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 1100 PM CST TUESDAY EVENING FOR SOUTH CENTRAL
ALABAMA AND NORTHWEST FLORIDA.
LAT...LON 3098 8638 3080 8640 3079 8678 3092 8678
3093 8677 3111 8655 3120 8666 3141 8619
3100 8617
TIME...MOT...LOC 0051Z 242DEG 62KT 3129 8641 3121 8638
3103 8642 3083 8668
$$010
WWUS54 KMOB 020103
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
703 PM CST TUE FEB 1 2011
ALC039-FLC091-020130-
/O.CON.KMOB.SV.W.0008.000000T0000Z-110202T0130Z/
COVINGTON AL-OKALOOSA FL-
703 PM CST TUE FEB 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CST
FOR NORTHERN OKALOOSA AND SOUTHEASTERN COVINGTON COUNTIES...
AT 657 PM CST...A LINE OF THUNDERSTORMS EXTENDED FROM OPP TO
FLORALA TO CRESTVIEW...MOVING NORTHEAST AT 60 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
MCRAE AND FLORALA AROUND 710 PM CST...
HOWELLS AROUND 715 PM CST...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY ON THE LOWEST
FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A
ROOM SUCH AS A CLOSET OR BATHROOM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST TUESDAY EVENING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 1100 PM CST TUESDAY EVENING FOR SOUTH CENTRAL
ALABAMA AND NORTHWEST FLORIDA.
LAT...LON 3098 8638 3080 8640 3079 8678 3090 8666
3108 8650 3120 8640 3127 8649 3141 8619
3100 8617
TIME...MOT...LOC 0102Z 242DEG 62KT 3138 8621 3130 8618
3112 8626 3085 8655
$$321
WWUS54 KMOB 020118
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
718 PM CST TUE FEB 1 2011
ALC039-FLC091-020130-
/O.CON.KMOB.SV.W.0008.000000T0000Z-110202T0130Z/
COVINGTON AL-OKALOOSA FL-
718 PM CST TUE FEB 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CST
FOR NORTHEASTERN OKALOOSA AND SOUTHEASTERN COVINGTON COUNTIES...
AT 712 PM CST... CAPABLE OF PRODUCING DAMAGING WINDS OVER 60 MPH.
THESE STORMS WERE ALONG A LINE EXTENDING FROM BEULAH TO HOWELLS TO
FLORALA TO AUBURN...OR ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST
OF OPP TO 12 MILES NORTHEAST OF FLORALA TO FLORALA TO CRESTVIEW...
MOVING NORTHEAST AT 70 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
RURAL SOUTHEASTERN COVINGTON COUNTY AT 730 PM CST
THE MOST INTENSE PORTION OF THE THUNDERSTORM LINE WAS OVER EXTREME
SOUTHEASTERN COVINGTON COUNTY....AND OVER NORTHEASTERN OKALOOSA
COUNTY FLORIDA.
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 800 PM CST TUESDAY EVENING
FOR NORTHWEST FLORIDA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1100 PM CST TUESDAY EVENING FOR SOUTH CENTRAL ALABAMA AND NORTHWEST
FLORIDA.
LAT...LON 3080 8662 3097 8659 3106 8640 3115 8629
3125 8628 3126 8618 3100 8617 3098 8638
3080 8640
TIME...MOT...LOC 0117Z 242DEG 62KT 3124 8612 3116 8609
3101 8624 3085 8644
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 1, 6:15 PM CST | Special Marine Warning | MOB | 45 min | |
| Feb 1, 7:00 PM CST | Special Marine Warning | MOB | 50 min | |
| Feb 1, 7:48 PM CST | Special Marine Warning | MOB | 57 min | |
| Feb 1, 8:51 PM CST | Special Marine Warning | MOB | 54 min | |
| Feb 2, 2:40 PM CST | Winter Weather Advisory | MOB | Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more | 27 hr |
| Feb 1, 6:08 PM CST | Severe Thunderstorm Warning | MOB | Okaloosa, Santa Rosa | 52 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2011Severe Thunderstorm Warnings in Florida, 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; radar from the NEXRAD Level II archive.