Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 109, NWS Mobile, AL

July 3, 2012Conecuh County, Escambia County, Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 3, 2012, 2:47 PM CDT for Conecuh County, Escambia County, Monroe County, Alabama. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 3, 2012, 2:47 PM CDT (19:47 UTC)
Expired
Jul 3, 2012, 3:19 PM CDT
In force
32 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

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

The radar

The Mobile radar (KMOB), 122 km from the middle of the area, began a volume at 19:49 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.

What was reported inside it

TimeReportWhereRemark
Jul 3, 3:05 PM CDTTSTM WND DMG1 E Excel, ALMULTIPLE TREES DOWN AND DOWNED POWERLINES ALONG HWY 136 EAST OF EXCEL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.8 hours before the alert went out and 207 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 2012-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1650 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 12:00Z on 2012-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
1650 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1329 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
8 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.

523 
WUUS54 KMOB 031947
SVRMOB
ALC035-053-099-032045-
/O.NEW.KMOB.SV.W.0109.120703T1947Z-120703T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
247 PM CDT TUE JUL 3 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CONECUH COUNTY IN SOUTH CENTRAL ALABAMA...
  EXTREME NORTH CENTRAL ESCAMBIA COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTH CENTRAL MONROE COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 345 PM CDT

* AT 245 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH AND HAIL UP TO QUARTER SIZE WAS LOCATED 8 MILES  
  SOUTHEAST OF FRISCO CITY...OR 5 MILES SOUTHWEST OF REPTON...AND    
  MOVING SOUTH AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MEGARGEL...           EXCEL...              REPTON...
  I65 AND CR 6...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 80 AND 86. THE 
STORM WAS MOSTLY OVER RURAL AREAS.

LAT...LON 3133 8707 3122 8740 3139 8749 3153 8718
TIME...MOT...LOC 1946Z 351DEG 3KT 3136 8730

$$
1 follow-up statement
765 
WWUS54 KMOB 032019
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
319 PM CDT TUE JUL 3 2012

ALC035-053-099-032029-
/O.CAN.KMOB.SV.W.0109.000000T0000Z-120703T2045Z/
CONECUH AL-ESCAMBIA AL-MONROE AL-
319 PM CDT TUE JUL 3 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR SOUTH
CENTRAL MONROE...EXTREME NORTH CENTRAL ESCAMBIA AND SOUTHWESTERN
CONECUH COUNTIES...

AT 317 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTH CENTRAL
MONROE...EXTREME NORTH CENTRAL ESCAMBIA AND SOUTHWESTERN CONECUH
COUNTIES HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3133 8707 3122 8740 3139 8749 3153 8718
TIME...MOT...LOC 2019Z 180DEG 0KT 3136 8730

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 1:58 PM CDTSevere Thunderstorm WarningMOBClarke32 min
Jul 3, 2:53 PM CDTSevere Thunderstorm WarningMOBMobile25 min
Jul 3, 3:14 PM CDTSevere Thunderstorm WarningMOBBaldwin, Escambia61 min
Jul 3, 3:31 PM CDTSevere Thunderstorm WarningMOBMobile, Washington31 min
Jul 3, 3:43 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile36 min
Jul 3, 4:01 PM CDTSpecial Marine WarningMOB89 min
Jul 3, 4:25 PM CDTSevere Thunderstorm WarningMOBBaldwin23 min
Jul 3, 4:43 PM CDTSevere Thunderstorm WarningMOBCovington, Crenshaw62 min
Jul 3, 5:14 PM CDTSevere Thunderstorm WarningMOBButler, Crenshaw49 min
Jul 3, 6:27 PM CDTSevere Thunderstorm WarningMOBButler, Crenshaw29 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.