Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 28, NWS Mobile, AL

March 9, 20115 counties in Alabama; Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Mar 9, 2011, 9:10 AM CST for 5 counties in Alabama; Okaloosa County, Santa Rosa County, Florida. It was in force for 65 min. 7 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: Mar 9, 2011, 9:10 AM CST (15:10 UTC)
Expired: Mar 9, 2011, 10:15 AM CST
In force: 65 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, Okaloosa County, FL, Santa Rosa County, FL

What was reported inside it

Time	Report	Where	Remark
Mar 9, 9:12 AM CST	TSTM WND DMG	3 Se Loango, AL	TREE DOWN NEAR INTERSECTION OF ROSIN RIDGE ROAD AND KNOWELS DRIVE.
Mar 9, 9:27 AM CST	TSTM WND DMG	2 W Andalusia, AL	DAMAGE TO METAL AWNING AT ANDALUSIA ELEMENTARY SCHOOL ON HIGHWAY 29 SOUTH.
Mar 9, 9:29 AM CST	TSTM WND DMG	1 Ene Andalusia, AL	POWER LINE DOWN NEAR SOUTH BYPASS.
Mar 9, 9:30 AM CST	TSTM WND DMG	2 Sse Andalusia, AL	TREE DOWN ON HIGHWAY 55 SOUTH NEAR GUARDIAN ANGEL.
Mar 9, 9:30 AM CST	TSTM WND DMG	5 S Andalusia, AL	POWER LINE DOWN ON BAY BRANCH ROAD.
Mar 9, 9:32 AM CST	TSTM WND DMG	Andalusia, AL	TREES AND POWER LINES DOWN NEAR AIRPORT ROAD AND SOUTH BYPASS.
Mar 9, 9:35 AM CST	TSTM WND DMG	2 E Libertyville, AL	TREE DOWN ON HEAD FARM ROAD.

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
Mar 9, 7:26 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 3.2 hours before the alert went out and 202 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 467 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 743 m²/s²
0-3 km storm-relative helicity: 1250 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

338 
WUUS54 KMOB 091510
SVRMOB
ALC013-035-039-041-053-FLC091-113-091615-
/O.NEW.KMOB.SV.W.0028.110309T1510Z-110309T1615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
910 AM CST WED MAR 9 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  NORTHEASTERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...
  SOUTHEASTERN BUTLER COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHEASTERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITIES OF...OPP...FLORALA...ANDALUSIA...
  SOUTHERN CRENSHAW COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF LUVERNE...
  EASTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 1015 AM CST

* AT 906 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM 14 MILES NORTHWEST OF ANDALUSIA TO 10 MILES
  EAST OF EAST BREWTON...AND MOVING EAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  RIVER FALLS AND GANTT AROUND 920 AM CST...
  DOZIER...PLEASANT HOME...HEATH AND ANDALUSIA AROUND 925 AM CST...
  CAROLINA AROUND 930 AM CST...
  SANFORD AND LIBERTYVILLE AROUND 935 AM CST...
  BABBIE AROUND 940 AM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3165 8615 3164 8617 3163 8615 3153 8616
      3153 8619 3099 8618 3099 8638 3089 8638
      3090 8694 3177 8656 3177 8615
TIME...MOT...LOC 1510Z 283DEG 32KT 3148 8653 3113 8684

$$

1 follow-up statement

863 
WWUS54 KMOB 091602
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1002 AM CST WED MAR 9 2011

ALC013-035-041-091611-
/O.CAN.KMOB.SV.W.0028.000000T0000Z-110309T1615Z/
CONECUH AL-BUTLER AL-CRENSHAW AL-
1002 AM CST WED MAR 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CRENSHAW...
SOUTHEASTERN BUTLER AND SOUTHEASTERN CONECUH COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3120 8670 3136 8639 3145 8634 3144 8619
      3099 8618 3099 8638 3089 8638 3090 8694
TIME...MOT...LOC 1601Z 283DEG 32KT 3138 8601 3103 8632

$$

ALC039-053-FLC091-113-091615-
/O.CON.KMOB.SV.W.0028.000000T0000Z-110309T1615Z/
ESCAMBIA AL-COVINGTON AL-OKALOOSA FL-SANTA ROSA FL-
1002 AM CST WED MAR 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM CST
FOR NORTHEASTERN SANTA ROSA...NORTHERN OKALOOSA...COVINGTON AND
SOUTHEASTERN ESCAMBIA COUNTIES...

AT 957 AM 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 9 MILES
EAST OF FRIENDSHIP TO LOCKHART...OR ALONG A LINE EXTENDING FROM ELBA
TO FLORALA...MOVING EAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  HOWELLS AROUND 1010 AM CST...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THESE STORMS.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. 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 NOON CST WEDNESDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3120 8670 3136 8639 3145 8634 3144 8619
      3099 8618 3099 8638 3089 8638 3090 8694
TIME...MOT...LOC 1601Z 283DEG 32KT 3138 8601 3103 8632

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 8, 7:11 PM CST	Severe Thunderstorm Warning	MOB	Mobile, Washington	34 min
Mar 8, 8:23 PM CST	Severe Thunderstorm Warning	MOB	Washington	37 min
Mar 8, 9:04 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington	41 min
Mar 8, 9:44 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington, Wilcox	46 min
Mar 9, 1:32 AM CST	Flash Flood Warning	MOB	Choctaw	118 min
Mar 9, 4:20 AM CST	Flash Flood Warning	MOB	Choctaw	6 hr
Mar 9, 4:22 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	38 min
Mar 9, 4:32 AM CST	Tornado Warning	MOB	Choctaw	33 min
Mar 9, 5:07 AM CST	Flash Flood Warning	MOB	Choctaw	6 hr
Mar 9, 5:40 AM CST	Tornado Warning	MOB	Choctaw, Clarke	33 min
Mar 9, 5:51 AM CST	Flash Flood Warning	MOB	Clarke, Washington, Wilcox	6 hr
Mar 9, 6:37 AM CST	Tornado Warning	MOB	Washington	17 min
Mar 9, 7:08 AM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile, Washington	52 min
Mar 9, 7:26 AM CST	Flash Flood Warning	MOB	Baldwin, Clarke, Mobile, Washington	6 hr
Mar 9, 7:33 AM CST	Flash Flood Warning	MOB	Monroe	6 hr
Mar 9, 7:52 AM CST	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	83 min
Mar 9, 7:54 AM CST	Special Marine Warning	MOB		81 min
Mar 9, 8:01 AM CST	Tornado Warning	MOB	Baldwin, Mobile	44 min
Mar 9, 8:14 AM CST	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	61 min
Mar 9, 8:27 AM CST	Tornado Warning	MOB	Baldwin, Mobile	63 min
Mar 9, 8:35 AM CST	Tornado Warning	MOB	Conecuh, Covington, Escambia	40 min
Mar 9, 8:41 AM CST	Flash Flood Warning	MOB	Baldwin, Mobile	4 hr
Mar 9, 8:48 AM CST	Flash Flood Warning	MOB	Conecuh, Escambia	5 hr
Mar 9, 8:50 AM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw	40 min
Mar 9, 9:02 AM CST	Severe Thunderstorm Warning	MOB	Baldwin, Escambia	58 min
Mar 9, 9:10 AM CST	Tornado Warning	MOB	Baldwin	50 min
Mar 9, 9:16 AM CST	Tornado Warning	MOB	Baldwin	44 min
Mar 9, 9:16 AM CST	Tornado Warning	MOB	Covington	59 min
Mar 9, 9:19 AM CST	Special Marine Warning	MOB		116 min
Mar 9, 9:23 AM CST	Special Marine Warning	MOB		97 min
Mar 9, 9:25 AM CST	Flash Flood Warning	MOB	Baldwin	6 hr
Mar 9, 9:26 AM CST	Tornado Warning	MOB	Baldwin, Escambia	49 min
Mar 9, 9:26 AM CST	Tornado Warning	MOB	Covington, Crenshaw	26 min
Mar 9, 9:36 AM CST	Flash Flood Warning	MOB	Conecuh, Covington, Escambia	114 min
Mar 9, 9:40 AM CST	Tornado Warning	MOB	Baldwin	50 min
Mar 9, 9:44 AM CST	Areal Flood Advisory	MOB	Butler, Conecuh, Covington, Crenshaw	4 hr
Mar 9, 9:54 AM CST	Tornado Warning	MOB	Covington	25 min
Mar 9, 10:09 AM CST	Severe Thunderstorm Warning	MOB	Covington	66 min
Mar 9, 10:22 AM CST	Areal Flood Warning	MOB	Choctaw	5 hr
Mar 9, 10:55 AM CST	Special Marine Warning	MOB		80 min
Mar 9, 11:00 AM CST	Areal Flood Warning	MOB	Choctaw	5 hr
Mar 9, 11:14 AM CST	Tornado Warning	MOB	Baldwin	61 min
Mar 9, 11:30 AM CST	River Flood Warning	MOB	Clarke, Monroe, Wilcox	10 days
Mar 9, 11:54 AM CST	Areal Flood Advisory	MOB	Conecuh, Covington, Escambia	111 min
Mar 9, 11:58 AM CST	Special Marine Warning	MOB		2 hr
Mar 9, 12:00 PM CST	Areal Flood Warning	MOB	Clarke, Washington, Wilcox	4 hr
Mar 9, 2:02 PM CST	Special Marine Warning	MOB		58 min
Mar 9, 10:17 AM CST	Flash Flood Warning	MOB	Santa Rosa	6 hr
Mar 9, 10:30 AM CST	Tornado Warning	MOB	Okaloosa, Santa Rosa	32 min
Mar 9, 11:03 AM CST	Flash Flood Warning	MOB	Okaloosa	5 hr
Mar 9, 11:10 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa	65 min
Mar 9, 11:41 AM CST	Tornado Warning	MOB	Okaloosa	26 min
Mar 9, 11:48 AM CST	Flash Flood Warning	MOB	Okaloosa, Santa Rosa	4 hr
Mar 9, 12:16 PM CST	Tornado Warning	MOB	Okaloosa, Santa Rosa	26 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Severe Thunderstorm Warnings in Florida, 2011 Every 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.