Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 34, NWS Mobile, AL

March 22, 2012Clarke County, Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 22, 2012, 11:38 AM CDT for Clarke County, Washington County, Alabama. It was in force for 67 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
Mar 22, 2012, 11:38 AM CDT (16:38 UTC)
Expired
Mar 22, 2012, 12:45 PM CDT
In force
67 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 103 km from the middle of the area, began a volume at 16:38 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
Mar 22, 10:55 AM CDTTornado WatchSPC6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.6 hours before the alert went out and 209 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 12:00Z on 2012-03-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2012-03-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
882 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
182 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.

088 
WUUS54 KMOB 221638
SVRMOB
ALC025-129-221745-
/O.NEW.KMOB.SV.W.0034.120322T1638Z-120322T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1138 AM CDT THU MAR 22 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CLARKE COUNTY IN SOUTHWEST ALABAMA...
  EAST CENTRAL WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1245 PM CDT

* AT 1134 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 11 MILES SOUTHEAST OF CHATOM...
  OR 4 MILES SOUTHWEST OF WAGARVILLE...AND MOVING NORTHEAST AT 30
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  JACKSON...            WAGARVILLE...         SAINT STEPHENS...
  LEROY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CDT THURSDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA.

&&

LAT...LON 3178 8783 3157 8764 3129 8807 3142 8821
TIME...MOT...LOC 1638Z 229DEG 25KT 3142 8805

$$
1 follow-up statement
849 
WWUS54 KMOB 221650
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1150 AM CDT THU MAR 22 2012

ALC025-129-221745-
/O.CON.KMOB.SV.W.0034.000000T0000Z-120322T1745Z/
WASHINGTON AL-CLARKE AL-
1150 AM CDT THU MAR 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT
FOR CENTRAL CLARKE AND EAST CENTRAL WASHINGTON COUNTIES...

AT 1148 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR PRESTWICK...OR 11
MILES SOUTH OF JACKSON...MOVING NORTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LEROY...CARSON...STAVE CREEK...MAYS CROSSROADS...MCVAY...WINN...
TODDTOWN...ZIMCO...UNION...SUGGSVILLE AND WHATLEY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CDT THURSDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA.

&&

LAT...LON 3149 8812 3178 8783 3157 8764 3135 8798
TIME...MOT...LOC 1650Z 229DEG 25KT 3147 8798

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 22, 8:50 AM CDTSevere Thunderstorm WarningMOBWashington55 min
Mar 22, 10:26 AM CDTSpecial Marine WarningMOB49 min
Mar 22, 11:00 AM CDTSevere Thunderstorm WarningMOBChoctaw45 min
Mar 22, 11:13 AM CDTSpecial Marine WarningMOB2 hr
Mar 22, 1:05 PM CDTSpecial Marine WarningMOB115 min
Mar 22, 1:36 PM CDTFlash Flood WarningMOBClarke, Mobile, Washington6 hr
Mar 22, 2:53 PM CDTAreal Flood AdvisoryMOBMobile3 hr
Mar 22, 3:17 PM CDTSpecial Marine WarningMOB43 min
Mar 22, 3:45 PM CDTFlash Flood WarningMOBBaldwin, Clarke, Escambia, Mobile, Monroe, Washington6 hr
Mar 22, 4:01 PM CDTAreal Flood WarningMOBChoctaw, Clarke, Washington12 hr
Mar 22, 4:25 PM CDTSevere Thunderstorm WarningMOBWilcox50 min
Mar 22, 5:43 PM CDTSpecial Marine WarningMOB62 min
Mar 22, 6:46 PM CDTSpecial Marine WarningMOB89 min
Mar 22, 6:51 PM CDTSevere Thunderstorm WarningMOBBaldwin, Conecuh, Escambia, Monroe54 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012Every severe thunderstorm warning in 2012

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.