Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 104, NWS Mobile, AL

July 2, 2012Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 2, 2012, 3:49 PM CDT for Baldwin County, Alabama. It was in force for 56 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 2, 2012, 3:49 PM CDT (20:49 UTC)
Expired
Jul 2, 2012, 4:45 PM CDT
In force
56 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 41 km from the middle of the area, began a volume at 20:50 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.8 hours before the alert went out and 177 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, Slidell Radar S, LA at 12:00Z on 2012-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1954 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, Slidell Radar S, LA at 12:00Z on 2012-07-02The 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
1954 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
947 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
24 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.

638 
WUUS54 KMOB 022049
SVRMOB
ALC003-022145-
/O.NEW.KMOB.SV.W.0104.120702T2049Z-120702T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
349 PM CDT MON JUL 2 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL BALDWIN COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 445 PM CDT

* AT 344 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING
  WINDS OVER 60 MPH WAS LOCATED 6 MILES SOUTHWEST OF LOXLEY...OR 4
  MILES WEST OF SILVERHILL...AND MOVING SOUTHWEST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SILVERHILL...         POINT CLEAR...        FAIRHOPE...
  DAPHNE...

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 3041 8792 3047 8793 3049 8794 3054 8791
      3061 8792 3062 8780 3055 8774 3039 8782
      3038 8782 3039 8782 3037 8784
TIME...MOT...LOC 2049Z 049DEG 7KT 3055 8782

$$
1 follow-up statement
420 
WWUS54 KMOB 022136
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
436 PM CDT MON JUL 2 2012

ALC003-022146-
/O.EXP.KMOB.SV.W.0104.000000T0000Z-120702T2145Z/
BALDWIN AL-
436 PM CDT MON JUL 2 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE FOR
WEST CENTRAL BALDWIN COUNTY...

AT 436 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR WEST CENTRAL
BALDWIN COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AT 445 PM CDT.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

LAT...LON 3041 8792 3047 8793 3049 8794 3054 8791
      3061 8792 3062 8780 3055 8774 3039 8782
      3038 8782 3039 8782 3037 8784
TIME...MOT...LOC 2136Z 049DEG 7KT 3049 8790

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 2:22 AM CDTSpecial Marine WarningMOB83 min
Jul 2, 4:04 PM CDTSevere Thunderstorm WarningMOBBaldwin26 min
Jul 2, 4:31 PM CDTSevere Thunderstorm WarningMOBMobile45 min
Jul 2, 4:49 PM CDTSpecial Marine WarningMOB56 min
Jul 2, 5:08 PM CDTSevere Thunderstorm WarningMOBMobile28 min
Jul 2, 5:20 PM CDTSpecial Marine WarningMOB55 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.