Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 71, NWS Mobile, AL

April 29, 2014Conecuh County, Escambia County, Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 29, 2014, 7:35 PM CDT for Conecuh County, Escambia County, Monroe County, Alabama. It was in force for 25 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, 7:35 PM CDT (00:35 UTC)
Expired
Apr 29, 2014, 8:00 PM CDT
In force
25 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Conecuh County, AL, Escambia County, AL, Monroe County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.6 hours before the alert went out and 218 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2014-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 407 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2014-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
407 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
688 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.6
Supercell composite
5.0

Open this sounding in Storm Lab

The text

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

961 
WUUS54 KMOB 300035
SVRMOB
ALC035-053-099-300100-
/O.NEW.KMOB.SV.W.0071.140430T0035Z-140430T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
ISSUED BY NATIONAL WEATHER SERVICE NEW ORLEANS LA
735 PM CDT TUE APR 29 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  CENTRAL ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF BREWTON...
  SOUTH CENTRAL MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 800 PM CDT

* AT 731 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR HOLMAN PRISON...OR 22 MILES WEST OF
  BREWTON...AND MOVING EAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO I65
  AND AL 113...BARNETT CROSSROADS...OSAKA...FOSHEE...WALLACE...
  RANGE...I65 AND AL 41...LENOX...KEEGO...APPLETON...I65 AND CR 6...
  EAST BREWTON...KIRKLAND...ROCK HILL...ROBERTS...NYMPH...
  JOHNSONVILLE...CASTLEBERRY AND BOYKIN

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 900 PM CDT TUESDAY EVENING
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3139 8686 3103 8683 3108 8752 3130 8750
TIME...MOT...LOC 0035Z 260DEG 45KT 3117 8738

$$
1 follow-up statement
893 
WWUS54 KMOB 300058
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
ISSUED BY NATIONAL WEATHER SERVICE NEW ORLEANS LA
758 PM CDT TUE APR 29 2014

ALC035-053-099-300108-
/O.EXP.KMOB.SV.W.0071.000000T0000Z-140430T0100Z/
CONECUH AL-ESCAMBIA AL-MONROE AL-
758 PM CDT TUE APR 29 2014

...THE SEVERE THUNDERSTORM WARNING FOR MONROE...ESCAMBIA AND CONECUH
COUNTIES WILL EXPIRE AT 800 PM CDT...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER 
SEVERE. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3139 8686 3103 8683 3108 8752 3130 8750
TIME...MOT...LOC 0058Z 260DEG 45KT 3122 8705

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 7:50 PM CDTFlash Flood WarningMOBBaldwin, Mobile115 min
Apr 29, 8:18 PM CDTSpecial Marine WarningMOB42 min
Apr 29, 8:20 PM CDTSpecial Marine WarningMOB25 min
Apr 29, 8:53 PM CDTRiver Flood WarningMOBBaldwin, Covington, Escambia57 hr
Apr 29, 9:02 PM CDTSevere Thunderstorm WarningMOBCovington43 min
Apr 29, 9:05 PM CDTSpecial Marine WarningMOB40 min
Apr 29, 9:07 PM CDTFlash Flood Warning EmergencyMOBBaldwin, Mobile18 hr
Apr 29, 9:49 PM CDTTornado WarningMOBCovington26 min
Apr 29, 10:23 PM CDTRiver Flood WarningMOBBaldwin40 hr
Apr 29, 10:46 PM CDTSpecial Marine WarningMOB89 min
Apr 29, 11:23 PM CDTRiver Flood WarningMOBBaldwin, Covington, Escambia49 hr
Apr 29, 11:34 PM CDTRiver Flood WarningMOBBaldwin69 hr
Apr 29, 11:43 PM CDTSpecial Marine WarningMOB92 min
Apr 30, 1:26 AM CDTSpecial Marine WarningMOB94 min
Apr 30, 1:43 AM CDTRiver Flood WarningMOBBaldwin50 hr
Apr 30, 2:04 AM CDTSpecial Marine WarningMOB26 min
Apr 30, 2:14 AM CDTSevere Thunderstorm WarningMOBButler, Clarke, Monroe, Wilcox46 min
Apr 30, 2:48 AM CDTSpecial Marine WarningMOB117 min
Apr 30, 4:29 AM CDTSpecial Marine WarningMOB2 hr
Apr 30, 6:26 AM CDTSpecial Marine WarningMOB2 hr
Apr 30, 7:06 AM CDTCoastal Flood StatementMOB8 hr
Apr 30, 9:04 AM CDTSevere Thunderstorm WarningMOBCovington26 min
Apr 30, 10:35 AM CDTRiver Flood WarningMOBBaldwin, Escambia71 hr
Apr 30, 2:06 PM CDTAreal Flood WarningMOBBaldwin, Mobile24 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2014Every 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.