Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 52, NWS Mobile, AL

April 29, 20148 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 29, 2014, 1:00 AM CDT for 8 counties in Alabama. It was in force for 60 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: Apr 29, 2014, 1:00 AM CDT (06:00 UTC)
Expired: Apr 29, 2014, 2:00 AM CDT
In force: 60 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Baldwin County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Escambia County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 126 km from the middle of the area, began a volume at 06:00 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
Apr 28, 7:59 PM CDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 6.0 hours before the alert went out and 213 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: 1160 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1240 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 236 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

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

427 
WUUS54 KMOB 290600
SVRMOB
ALC003-025-035-039-053-097-099-129-290700-
/O.NEW.KMOB.SV.W.0052.140429T0600Z-140429T0700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
100 AM CDT TUE APR 29 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHWESTERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
  ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHWESTERN BALDWIN COUNTY IN SOUTHWEST ALABAMA...
  EXTREME SOUTH CENTRAL CLARKE COUNTY IN SOUTHWEST ALABAMA...
  NORTHERN MOBILE COUNTY IN SOUTHWEST ALABAMA...
  SOUTHEASTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 200 AM CDT

* AT 1258 AM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF
  PRODUCING DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE
  EXTENDING FROM 8 MILES NORTHEAST OF MONROEVILLE TO 19 MILES
  SOUTHWEST OF FRISCO CITY TO CITRONELLE...AND MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOWA CHOCTAW RESERVATION...                 MOVICO...
  POARCH CREEK RESERVATION...                 MOUNT VERNON...
  CITRONELLE...         CALVERT...            I65 AND CR 47...
  URIAH...              MONROEVILLE...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 44 AND 103.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CDT TUESDAY FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3123 8675 3100 8737 3104 8837 3129 8772
      3155 8728 3151 8640 3146 8640
TIME...MOT...LOC 0600Z 274DEG 36KT 3158 8715 3129 8761
          3108 8817

$$

1 follow-up statement

316 
WWUS54 KMOB 290628
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
128 AM CDT TUE APR 29 2014

ALC025-129-290638-
/O.CAN.KMOB.SV.W.0052.000000T0000Z-140429T0700Z/
WASHINGTON AL-CLARKE AL-
128 AM CDT TUE APR 29 2014

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR EXTREME
SOUTH CENTRAL CLARKE AND SOUTHEASTERN WASHINGTON COUNTIES...

AT 123 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR EXTREME SOUTH
CENTRAL CLARKE AND SOUTHEASTERN WASHINGTON COUNTIES HAS MOVED OUT OF 
THE COUNTY...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

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

LAT...LON 3123 8675 3100 8737 3104 8819 3117 8793
      3115 8787 3119 8787 3130 8764 3155 8728
      3151 8640 3146 8640
TIME...MOT...LOC 0628Z 274DEG 36KT 3156 8682 3127 8728
          3106 8784

$$

ALC003-035-039-053-097-099-290700-
/O.CON.KMOB.SV.W.0052.000000T0000Z-140429T0700Z/
CONECUH AL-COVINGTON AL-ESCAMBIA AL-MONROE AL-BALDWIN AL-MOBILE AL-
128 AM CDT TUE APR 29 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR NORTHEASTERN MOBILE...NORTHWESTERN BALDWIN...SOUTHERN MONROE...
ESCAMBIA...NORTHWESTERN COVINGTON AND CONECUH COUNTIES...

AT 123 AM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS OVER 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM
10 MILES NORTHEAST OF EVERGREEN TO 12 MILES SOUTH OF FRISCO CITY TO
14 MILES NORTHEAST OF CREOLA...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  MOVICO...             POARCH CREEK RESERVATION...
  MOUNT VERNON...       I65 AND CR 47...      URIAH...
  MEGARGEL...           FRISCO CITY...        EXCEL...
  REPTON...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 45 AND 103.

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.

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

&&

LAT...LON 3123 8675 3100 8737 3104 8819 3117 8793
      3115 8787 3119 8787 3130 8764 3155 8728
      3151 8640 3146 8640
TIME...MOT...LOC 0628Z 274DEG 36KT 3156 8682 3127 8728
          3106 8784

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 9:30 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	45 min
Apr 28, 10:12 PM CDT	Tornado Warning	MOB	Choctaw	63 min
Apr 28, 10:15 PM CDT	Severe Thunderstorm Warning	MOB	Washington	45 min
Apr 28, 10:25 PM CDT	Tornado Warning	MOB	Choctaw, Washington	50 min
Apr 28, 10:49 PM CDT	Flash Flood Warning	MOB	Choctaw, Washington	4 hr
Apr 28, 11:12 PM CDT	Tornado Warning	MOB	Clarke, Washington	48 min
Apr 28, 11:14 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	61 min
Apr 28, 11:24 PM CDT	Severe Thunderstorm Warning	MOB	Washington	36 min
Apr 28, 11:54 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	66 min
Apr 29, 12:31 AM CDT	Flash Flood Warning	MOB	Clarke, Washington	4 hr
Apr 29, 12:38 AM CDT	Severe Thunderstorm Warning	MOB	Clarke, Conecuh, Monroe, Wilcox	67 min
Apr 29, 1:18 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	57 min
Apr 29, 1:21 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Crenshaw, Monroe, Wilcox	54 min
Apr 29, 1:35 AM CDT	Tornado Warning	MOB	Butler, Crenshaw	40 min
Apr 29, 1:49 AM CDT	Special Marine Warning	MOB		41 min
Apr 29, 2:00 AM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Covington, Escambia	60 min
Apr 29, 2:10 AM CDT	Flash Flood Warning	MOB	Mobile	4 hr
Apr 29, 2:14 AM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	46 min
Apr 29, 2:15 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia, Mobile	60 min
Apr 29, 2:27 AM CDT	Special Marine Warning	MOB		63 min
Apr 29, 2:56 AM CDT	Flash Flood Warning	MOB	Baldwin, Mobile	4 hr
Apr 29, 2:58 AM CDT	Severe Thunderstorm Warning	MOB	Covington, Crenshaw, Escambia	62 min
Apr 29, 3:15 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	90 min
Apr 29, 3:29 AM CDT	Special Marine Warning	MOB		2 hr
Apr 29, 4:34 AM CDT	Flash Flood Warning	MOB	Baldwin, Mobile	4 hr
Apr 29, 4:35 AM CDT	River Flood Warning	MOB	Covington, Escambia	4 days
Apr 29, 4:47 AM CDT	Special Marine Warning	MOB		118 min
Apr 29, 4:53 AM CDT	Special Marine Warning	MOB		67 min
Apr 29, 6:44 AM CDT	Special Marine Warning	MOB		91 min
Apr 29, 8:15 AM CDT	Special Marine Warning	MOB		90 min
Apr 29, 10:43 AM CDT	Special Marine Warning	MOB		92 min
Apr 29, 11:41 AM CDT	Special Marine Warning	MOB		94 min
Apr 29, 12:25 PM CDT	Special Marine Warning	MOB		95 min
Apr 29, 12:28 PM CDT	Special Marine Warning	MOB		92 min
Apr 29, 1:33 PM CDT	Special Marine Warning	MOB		57 min
Apr 29, 1:53 PM CDT	Flash Flood Warning	MOB	Baldwin, Mobile	3 hr
Apr 29, 2:16 PM CDT	Special Marine Warning	MOB		89 min
Apr 29, 2:26 PM CDT	Severe Thunderstorm Warning	MOB	Washington	34 min
Apr 29, 2:41 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	34 min
Apr 29, 2:50 PM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	40 min
Apr 29, 2:55 PM CDT	Special Marine Warning	MOB		20 min
Apr 29, 2:57 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	48 min
Apr 29, 3:16 PM CDT	Special Marine Warning	MOB		59 min
Apr 29, 3:50 PM CDT	Special Marine Warning	MOB		25 min
Apr 29, 3:55 PM CDT	Flash Flood Warning	MOB	Baldwin	2 hr
Apr 29, 4:13 PM CDT	Special Marine Warning	MOB		62 min
Apr 29, 4:15 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	60 min
Apr 29, 4:41 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Washington	49 min
Apr 29, 5:11 PM CDT	Special Marine Warning	MOB		64 min
Apr 29, 5:11 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	64 min
Apr 29, 5:24 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	51 min
Apr 29, 5:50 PM CDT	Special Marine Warning	MOB		55 min
Apr 29, 6:18 PM CDT	Special Marine Warning	MOB		27 min
Apr 29, 6:19 PM CDT	Areal Flood Warning	MOB	Baldwin, Mobile	12 hr
Apr 29, 6:41 PM CDT	Special Marine Warning	MOB		64 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2014 Every severe thunderstorm warning in 2014

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.