Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 2, NWS Mobile, AL

February 20, 2014Clarke County, Wilcox County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 20, 2014, 8:27 PM CST for Clarke County, Wilcox County, Alabama. It was in force for 63 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
Feb 20, 2014, 8:27 PM CST (02:27 UTC)
Expired
Feb 20, 2014, 9:30 PM CST
In force
63 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Clarke County, AL, Wilcox County, AL

The radar

The Birmingham radar (KBMX), 136 km from the middle of the area, began a volume at 02:28 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.

IssuedProductOfficeLasted
Feb 20, 6:05 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.5 hours before the alert went out and 136 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 2014-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 755 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 2014-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.19395878Sfc1 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
755 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
734 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.7

Open this sounding in Storm Lab

The text

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

964 
WUUS54 KMOB 210227
SVRMOB
ALC025-131-210330-
/O.NEW.KMOB.SV.W.0002.140221T0227Z-140221T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
827 PM CST THU FEB 20 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN WILCOX COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHERN CLARKE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 930 PM CST

* AT 824 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 8 MILES
  NORTHWEST OF GROVE HILL...OR 9 MILES WEST OF FULTON...AND MOVING
  NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BOYKIN...             YELLOW BLUFF...       PINE HILL...
  CATHERINE...          CAMDEN...             THOMASVILLE...
  FULTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST FRIDAY MORNING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3224 8739 3221 8737 3220 8733 3214 8725
      3210 8722 3208 8719 3204 8717 3167 8789
      3182 8801 3199 8783 3201 8763 3213 8763
      3214 8753 3226 8753 3228 8750 3228 8745
TIME...MOT...LOC 0227Z 235DEG 31KT 3181 8785

$$

JP
2 follow-up statements
993 
WWUS54 KMOB 210247
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
847 PM CST THU FEB 20 2014

ALC025-131-210330-
/O.CON.KMOB.SV.W.0002.000000T0000Z-140221T0330Z/
WILCOX AL-CLARKE AL-
847 PM CST THU FEB 20 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CST
FOR NORTH CENTRAL CLARKE AND WESTERN WILCOX COUNTIES...

AT 844 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR ROUNDHILL...OR NEAR THOMASVILLE...MOVING NORTHEAST AT 35
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FINLEY
CROSSING...ATKEISON...HESTLE...CULPEPER...SUNNY SOUTH...PINE HILL...
SHEPPARD...COY...MACMILLAN...ARLINGTON...KIMBROUGH...ANNE MANIE...
YELLOW BLUFF...COAL BLUFF...LAMISON...FLATWOOD...ROCKWEST...BETHEL...
BOILING SPRINGS...MIDWAY...CATHERINE...PRAIRIE...CAMDEN...PRAIRIE
BLUFF...MILLERS FERRY...GASTONBURG...BOYKIN...REHOBOTH AND ALBERTA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST FRIDAY MORNING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3224 8739 3221 8737 3220 8733 3214 8725
      3210 8722 3208 8719 3204 8717 3174 8776
      3190 8791 3199 8783 3201 8763 3213 8763
      3214 8753 3226 8753 3228 8750 3228 8745
TIME...MOT...LOC 0247Z 235DEG 31KT 3191 8768

$$
588 
WWUS54 KMOB 210256
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
856 PM CST THU FEB 20 2014

ALC025-131-210306-
/O.CAN.KMOB.SV.W.0002.000000T0000Z-140221T0330Z/
WILCOX AL-CLARKE AL-
856 PM CST THU FEB 20 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CLARKE AND
WESTERN WILCOX COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CST FRIDAY MORNING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3224 8739 3221 8737 3220 8733 3214 8725
      3210 8722 3208 8719 3204 8717 3174 8776
      3190 8791 3199 8783 3201 8763 3213 8763
      3214 8753 3226 8753 3228 8750 3228 8745
TIME...MOT...LOC 0256Z 235DEG 31KT 3195 8760

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 7:51 PM CSTMarine Dense Fog AdvisoryMOB7 hr
Feb 20, 7:55 PM CSTTornado WarningMOBClarke, Washington35 min
Feb 20, 10:31 PM CSTAreal Flood AdvisoryMOBChoctaw3 hr
Feb 20, 10:57 PM CSTSevere Thunderstorm WarningMOBChoctaw, Washington78 min
Feb 21, 12:10 AM CSTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington80 min
Feb 21, 12:34 AM CSTAreal Flood AdvisoryMOBBaldwin, Choctaw, Clarke, Mobile, Washington116 min
Feb 21, 1:04 AM CSTSevere Thunderstorm WarningMOBClarke, Monroe, Wilcox41 min
Feb 21, 1:48 AM CSTAreal Flood AdvisoryMOBBaldwin, Clarke, Escambia, Mobile, Monroe117 min
Feb 21, 1:52 AM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile53 min
Feb 21, 1:57 AM CSTSpecial Marine WarningMOB93 min
Feb 21, 2:34 AM CSTSevere Thunderstorm WarningMOBBaldwin56 min
Feb 21, 2:46 AM CSTAreal Flood AdvisoryMOBButler, Conecuh, Escambia, Monroe119 min
Feb 21, 3:04 AM CSTWind AdvisoryMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more6 hr
Feb 21, 3:37 AM CSTAreal Flood AdvisoryMOBBaldwin, Butler, Conecuh, Covington, Crenshaw, Escambia113 min
Feb 21, 3:54 AM CSTAreal Flood AdvisoryMOBBaldwin2 hr
Feb 21, 3:54 AM CSTSpecial Marine WarningMOB96 min
Feb 21, 4:30 AM CSTSpecial Marine WarningMOB90 min
Feb 21, 4:42 AM CSTSpecial Marine WarningMOB93 min
Feb 21, 5:25 AM CSTSpecial Marine WarningMOB95 min
Feb 21, 10:46 AM CSTRiver Flood WarningMOBChoctaw, Clarke, Washington3 days

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.