Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 49, NWS Mobile, AL

April 15, 20115 counties in Alabama; Escambia County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Apr 15, 2011, 10:56 PM CDT for 5 counties in Alabama; Escambia County, Florida. It was in force for 64 min. 3 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: Apr 15, 2011, 10:56 PM CDT (03:56 UTC)
Expired: Apr 16, 2011, 12:00 AM CDT
In force: 64 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Baldwin County, AL, Conecuh County, AL, Escambia County, AL, Mobile County, AL, Monroe County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 84 km from the middle of the area, began a volume at 03:58 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
Apr 15, 11:30 PM CDT	TORNADO	Barnett Crossroads, AL	TREES DOWN ON WILDFORK RD. IN BARNETT CROSSROADS AND IN THE APPLETON COMMUNITY.
Apr 15, 11:50 PM CDT	TORNADO	9 N Brewton, AL	MULTIPLE HOMES AND OTHER STRUCTURES REPORTED DAMAGED ON AND NEAR HWY 31 NORTH OF BREWTON NEAR THE COUNTY LINE.
Apr 16, 12:10 AM CDT	TORNADO	Damascus, AL	TREE DOWN ON A HOME WITH OCCUPANTS TRAPPED INSIDE AT 5416 DAMASCUS RD. VFD WORKING TO FREE OCCUPANTS.

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 15, 7:48 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.9 hours before the alert went out and 230 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: 2774 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 697 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 267 m²/s²
0-3 km storm-relative helicity: 318 m²/s²
Significant tornado parameter: 5.3
Supercell composite: 18.2

Open this sounding in Storm Lab

The text

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

298 
WUUS54 KMOB 160356
SVRMOB
ALC003-035-053-097-099-FLC033-160500-
/O.NEW.KMOB.SV.W.0049.110416T0356Z-110416T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1056 PM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  SOUTHERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHWESTERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...
  NORTHERN MOBILE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL MIDNIGHT CDT

* AT 1049 PM CDT...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 8 MILES WEST OF FRISCO CITY ACROSS NORTHER BALDWIN COUNTY TO  
  12 MILES EAST OF LUCEDALE MISSISSIPPI...AND MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  FRISCO CITY AND LOTT AND COLEMAN D AROUND 1100 PM CDT...
  EXCEL...CARNEY...VOCATION AND I65 AND CR 1 AROUND 1105 PM CDT...
  OAK GROVE...I65 AND AL 21 AND HOLMAN PRISON AROUND 1110 PM CDT...
  REPTON AROUND 1115 PM CDT...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 10 AND 96.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3112 8686 3100 8706 3100 8717 3094 8727
      3073 8732 3076 8799 3078 8800 3076 8801
      3077 8842 3107 8843 3117 8780 3143 8766
      3142 8760 3145 8757 3147 8670 3143 8667
TIME...MOT...LOC 0354Z 270DEG 34KT 3139 8747 3108 8765
          3097 8835

$$

4 follow-up statements

214 
WWUS54 KMOB 160412
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1112 PM CDT FRI APR 15 2011

ALC003-035-053-097-099-FLC033-160500-
/O.CON.KMOB.SV.W.0049.000000T0000Z-110416T0500Z/
ESCAMBIA AL-CONECUH AL-MONROE AL-BALDWIN AL-MOBILE AL-ESCAMBIA FL-
1112 PM CDT FRI APR 15 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR NORTHERN ESCAMBIA...CENTRAL MOBILE...NORTHERN BALDWIN...SOUTH
CENTRAL MONROE...SOUTHERN CONECUH AND ESCAMBIA COUNTIES...

AT 1107 PM CDT...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 8 MILES 
EAST OF FRISCO CITY TO 6 MILES NORTHEAST OF ATMORE TO 11 MILES EAST 
OF LUCEDALE...MOVING EAST AT 50 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MILLERTOWN AND LOTT AROUND 1115 PM CDT...
  MAUVILLA...INDIAN HILLS...CRAWFORD AND OAK GROVE AROUND 1120 PM
  CDT...
  I65 AND AL 83...KUSHLA...I65 AND AL 158 AND EIGHT MILE AROUND 1125
  PM CDT...

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 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3112 8686 3100 8706 3100 8717 3093 8729
      3073 8732 3077 8800 3078 8800 3076 8801
      3077 8842 3101 8842 3114 8775 3124 8748
      3145 8747 3147 8670 3143 8667
TIME...MOT...LOC 0411Z 264DEG 45KT 3142 8720 3111 8738
          3093 8834

$$

621 
WWUS54 KMOB 160421
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1121 PM CDT FRI APR 15 2011

ALC003-035-053-097-099-FLC033-160500-
/O.CON.KMOB.SV.W.0049.000000T0000Z-110416T0500Z/
ESCAMBIA AL-CONECUH AL-MONROE AL-BALDWIN AL-MOBILE AL-ESCAMBIA FL-
1121 PM CDT FRI APR 15 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR NORTHERN ESCAMBIA...CENTRAL MOBILE...NORTHERN BALDWIN...SOUTH
CENTRAL MONROE...SOUTHERN CONECUH AND ESCAMBIA COUNTIES...

AT 1117 PM CDT... RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS 
CAPABLE OF PRODUCING DAMAGING WINDS OVER 60 MPH. THESE STORMS WERE 
ALONG A LINE EXTENDING FROM 10 MILES SOUTHEAST OF MONROEVILLE TO 9 
MILES NORTH OF FLOMATON TO ATMORE TO BAY MINETTE...MOVING EAST AT 45 
MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  LONDON...PHILLIPSVILLE...I65 AND US 84 AND FAIRVIEW AROUND 1130 PM
  CDT...
  I65 AND AL 83...PINEVILLE...PEA RIDGE AND OLD SPARTA AROUND 1135 PM
  CDT...
  MCKINNON AND ENON AROUND 1140 PM CDT...

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 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3112 8686 3100 8706 3100 8717 3093 8729
      3073 8732 3078 8800 3076 8801 3077 8842
      3078 8842 3093 8841 3102 8782 3115 8751
      3125 8743 3145 8738 3147 8670 3143 8667
TIME...MOT...LOC 0421Z 263DEG 40KT 3144 8715 3114 8721
          3102 8744 3094 8777

$$

299 
WWUS54 KMOB 160429
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1129 PM CDT FRI APR 15 2011

ALC097-160437-
/O.CAN.KMOB.SV.W.0049.000000T0000Z-110416T0500Z/
MOBILE AL-
1129 PM CDT FRI APR 15 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MOBILE COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3112 8686 3100 8706 3100 8717 3093 8729
      3073 8732 3078 8791 3100 8787 3115 8751
      3125 8743 3145 8738 3147 8670 3144 8668
      3143 8667
TIME...MOT...LOC 0427Z 263DEG 40KT 3145 8709 3118 8715
          3105 8737 3095 8769

$$

ALC003-035-053-099-FLC033-160500-
/O.CON.KMOB.SV.W.0049.000000T0000Z-110416T0500Z/
ESCAMBIA AL-CONECUH AL-MONROE AL-BALDWIN AL-ESCAMBIA FL-
1129 PM CDT FRI APR 15 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR NORTHERN ESCAMBIA...NORTHERN BALDWIN...SOUTH CENTRAL MONROE...
SOUTHERN CONECUH AND ESCAMBIA COUNTIES...

AT 1126 PM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS 
OVER 45 TO 50 MPH.  THESE STORMS WERE ALONG A LINE EXTENDING FROM 9 
MILES WEST OF EVERGREEN TO 7 MILES NORTHWEST OF BREWTON TO 6 MILES 
NORTHEAST OF BAY MINETTE...MOVING EAST AT 45 MPH.

THE SEVERE THUNDERSTORM WARNING WILL REMAIN IN EFFECT SOUTHWARD INTO 
CENTRAL BALDWIN COUNTY BECAUSE ADDITIONAL SEVERE THUNDERSTORM 
DEVELOPMENT REMAINS A HIGH LIKELIHOOD AS THE LINE APPROACHES.

SEVERE THUNDERSTORMS WILL BE NEAR...
  PINEVILLE...OLD SPARTA...I65 AND US 84 AND FAIRVIEW AROUND 1135 PM
  CDT...
  MCKINNON...ENON...BAY SPRINGS AND JAY VILLA AROUND 1140 PM CDT...
  PEA RIDGE AND RABB AROUND 1145 PM CDT...

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 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3112 8686 3100 8706 3100 8717 3093 8729
      3073 8732 3078 8791 3100 8787 3115 8751
      3125 8743 3145 8738 3147 8670 3144 8668
      3143 8667
TIME...MOT...LOC 0427Z 263DEG 40KT 3145 8709 3118 8715
          3105 8737 3095 8769

$$

190 
WWUS54 KMOB 160450
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1150 PM CDT FRI APR 15 2011

ALC099-160459-
/O.CAN.KMOB.SV.W.0049.000000T0000Z-110416T0500Z/
MONROE AL-
1150 PM CDT FRI APR 15 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHERN MONROE 
COUNTY IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3112 8686 3100 8706 3100 8717 3093 8729
      3073 8732 3078 8791 3100 8787 3114 8751
      3117 8723 3125 8717 3146 8709 3147 8670
      3145 8670 3143 8667
TIME...MOT...LOC 0449Z 264DEG 32KT 3145 8694 3116 8698
          3108 8711 3101 8747 3095 8784

$$

ALC003-035-053-FLC033-160500-
/O.CON.KMOB.SV.W.0049.000000T0000Z-110416T0500Z/
ESCAMBIA AL-CONECUH AL-BALDWIN AL-ESCAMBIA FL-
1150 PM CDT FRI APR 15 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR NORTHERN ESCAMBIA...NORTHERN BALDWIN...SOUTHEASTERN CONECUH AND
ESCAMBIA COUNTIES...

AT 1145 PM CDT... CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND 
DAMAGING WINDS OVER 60 MPH.  THESE STORMS WERE ALONG A LINE 
EXTENDING FROM EVERGREEN TO BREWTON TO ATMORE TO 8 MILES NORTHWEST 
OF BAY MINETTE...MOVING EAST AT 35 TO 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  VANGORDON...I65 AND AL 287...DOUGLASVILLE AND RABB AROUND 1155 PM
  CDT...
  BOYKIN...KEEGO...DYAS AND DAMASCUS AROUND MIDNIGHT CDT...

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 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3112 8686 3100 8706 3100 8717 3093 8729
      3073 8732 3078 8791 3100 8787 3114 8751
      3117 8723 3125 8717 3146 8709 3147 8670
      3145 8670 3143 8667
TIME...MOT...LOC 0449Z 264DEG 32KT 3145 8694 3116 8698
          3108 8711 3101 8747 3095 8784

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 7:14 PM CDT	Tornado Warning	MOB	Washington	36 min
Apr 15, 7:24 PM CDT	Tornado Warning Emergency	MOB	Mobile, Washington	51 min
Apr 15, 7:36 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	39 min
Apr 15, 7:39 PM CDT	Tornado Warning	MOB	Clarke, Monroe, Wilcox	29 min
Apr 15, 7:54 PM CDT	Tornado Warning	MOB	Clarke, Monroe, Wilcox	51 min
Apr 15, 8:11 PM CDT	Tornado Warning Emergency	MOB	Washington	49 min
Apr 15, 8:28 PM CDT	Tornado Warning	MOB	Washington	47 min
Apr 15, 8:50 PM CDT	Tornado Warning	MOB	Baldwin, Clarke, Escambia, Mobile, Monroe, Washington	55 min
Apr 15, 9:15 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Mobile, Washington	45 min
Apr 15, 9:18 PM CDT	Flash Flood Warning	MOB	Washington	117 min
Apr 15, 9:38 PM CDT	Tornado Warning	MOB	Conecuh, Monroe	52 min
Apr 15, 9:41 PM CDT	Tornado Warning	MOB	Clarke, Washington	49 min
Apr 15, 9:59 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	61 min
Apr 15, 10:05 PM CDT	Tornado Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	55 min
Apr 15, 10:24 PM CDT	Tornado Warning	MOB	Butler, Clarke, Conecuh, Monroe, Wilcox	51 min
Apr 15, 10:32 PM CDT	Tornado Warning	MOB	Baldwin, Mobile	33 min
Apr 15, 10:59 PM CDT	Tornado Warning	MOB	Baldwin, Conecuh, Escambia, Monroe	61 min
Apr 15, 11:10 PM CDT	Tornado Warning	MOB	Butler, Crenshaw	16 min
Apr 15, 11:33 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	42 min
Apr 15, 11:45 PM CDT	Tornado Warning	MOB	Conecuh, Covington, Escambia	60 min
Apr 16, 12:00 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw	60 min
Apr 16, 12:11 AM CDT	Severe Thunderstorm Warning	MOB	Crenshaw	32 min
Apr 16, 12:38 AM CDT	Tornado Warning	MOB	Covington	52 min
Apr 16, 1:01 AM CDT	Severe Thunderstorm Warning	MOB	Covington	33 min
Apr 16, 5:44 AM CDT	Red Flag Warning	MOB		13 hr

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; radar from the NEXRAD Level II archive.