Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 129, NWS Mobile, AL

July 6, 2012Conecuh County, Covington County, Escambia County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 6, 2012, 12:49 AM CDT for Conecuh County, Covington County, Escambia County, Alabama. It was in force for 41 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
Jul 6, 2012, 12:49 AM CDT (05:49 UTC)
Expired
Jul 6, 2012, 1:30 AM CDT
In force
41 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Conecuh County, AL, Covington County, AL, Escambia County, AL

The radar

The Eglin Afb radar (KEVX), 94 km from the middle of the area, began a volume at 05:51 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, 5.8 hours before the alert went out and 241 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 2012-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1231 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, Tallahassee Rgnl, FL at 00:00Z on 2012-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939Sfc1 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
1231 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
1231 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
64 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.

453 
WUUS54 KMOB 060549
SVRMOB
ALC035-039-053-060630-
/O.NEW.KMOB.SV.W.0129.120706T0549Z-120706T0630Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1249 AM CDT FRI JUL 6 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHWESTERN COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA...
  EASTERN ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 130 AM CDT

* AT 1244 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 12 MILES
  SOUTHWEST OF ANDALUSIA...OR 8 MILES WEST OF CAROLINA...AND MOVING
  SOUTH AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  US 29 AND CR 43...

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.

&&

LAT...LON 3099 8661 3100 8690 3130 8674 3126 8654
TIME...MOT...LOC 0550Z 017DEG 15KT 3120 8667

$$
1 follow-up statement
534 
WWUS54 KMOB 060626
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
126 AM CDT FRI JUL 6 2012

ALC035-039-053-060637-
/O.EXP.KMOB.SV.W.0129.000000T0000Z-120706T0630Z/
CONECUH AL-COVINGTON AL-ESCAMBIA AL-
126 AM CDT FRI JUL 6 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE FOR
EASTERN ESCAMBIA...SOUTHWESTERN COVINGTON AND SOUTHEASTERN CONECUH
COUNTIES...

AT 121 AM CDT...THE STORM THAT PROMPTED THE WARNING FOR EASTERN
ESCAMBIA...SOUTHWESTERN COVINGTON AND SOUTHEASTERN CONECUH COUNTIES
HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM
WARNING WILL BE ALLOWED TO EXPIRE AT 130 AM CDT.

LAT...LON 3099 8661 3100 8690 3130 8674 3126 8654
TIME...MOT...LOC 0627Z 017DEG 15KT 3105 8672

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 4:52 AM CDTSpecial Marine WarningMOB38 min
Jul 6, 5:28 AM CDTSpecial Marine WarningMOB92 min
Jul 6, 5:38 AM CDTSpecial Marine WarningMOB97 min
Jul 6, 7:03 AM CDTSpecial Marine WarningMOB87 min
Jul 6, 7:46 AM CDTSpecial Marine WarningMOB89 min
Jul 6, 8:38 AM CDTSpecial Marine WarningMOB82 min
Jul 6, 9:19 AM CDTSpecial Marine WarningMOB86 min
Jul 6, 9:38 AM CDTSpecial Marine WarningMOB85 min
Jul 6, 12:39 PM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington51 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.