Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 73, NWS Mobile, AL

April 29, 2014Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 29, 2014, 9:02 PM CDT for Covington County, Alabama. It was in force for 43 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, 9:02 PM CDT (02:02 UTC)
Expired
Apr 29, 2014, 9:45 PM CDT
In force
43 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Covington County, AL

The radar

The Eglin Afb radar (KEVX), 73 km from the middle of the area, began a volume at 02:04 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 nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 2.0 hours before the alert went out and 212 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, Tallahassee Rgnl, FL at 00:00Z on 2014-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 124 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2014-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.193958Sfc1 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
124 J/kg
Mixed-layer CIN
-255 J/kg
Mixed-layer LCL
1698 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
229 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.

298 
WUUS54 KMOB 300202
SVRMOB
ALC039-300245-
/O.NEW.KMOB.SV.W.0073.140430T0202Z-140430T0245Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 945 PM CDT

* AT 900 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  WATKINS BRIDGE...OR 19 MILES SOUTH OF ANDALUSIA...AND MOVING NORTH
  AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  STEDMAN...HOWELLS...RED OAK...GREEN BAY...ONYCHA...BABBIE...
  ESTOTHEL...SANFORD AND OPP

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.

PLEASE FOLLOW OUR OFFICE ON BOTH FACEBOOK AND TWITTER FOR MORE
INFORMATION ON SEVERE WEATHER AND TO RELAY WEATHER REPORTS AND
PHOTOS.

&&

LAT...LON 3099 8635 3099 8639 3099 8653 3101 8657
      3138 8638 3135 8619 3105 8618
TIME...MOT...LOC 0203Z 198DEG 23KT 3105 8644

$$
1 follow-up statement
852 
WWUS54 KMOB 300226
SVSMOB

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

ALC039-300245-
/O.CON.KMOB.SV.W.0073.000000T0000Z-140430T0245Z/
COVINGTON AL-
926 PM CDT TUE APR 29 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR COVINGTON COUNTY...

AT 922 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR WATKINS BRIDGE...OR 14 MILES SOUTHEAST OF ANDALUSIA...
MOVING NORTHEAST AT 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GREEN
BAY...OPP...ONYCHA...ESTOTHEL AND BABBIE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE FOLLOW OUR OFFICE ON BOTH FACEBOOK AND TWITTER FOR MORE
INFORMATION ON SEVERE WEATHER AND TO RELAY WEATHER REPORTS AND
PHOTOS.

&&

LAT...LON 3102 8640 3107 8649 3137 8635 3131 8619
      3124 8619
TIME...MOT...LOC 0226Z 210DEG 16KT 3114 8637

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 7:35 PM CDTSevere Thunderstorm WarningMOBConecuh, Escambia, Monroe25 min
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, 9:05 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; radar from the NEXRAD Level II archive.