Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 165, NWS Mobile, AL

August 2, 2012Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Aug 2, 2012, 1:54 PM CDT for Escambia County, Florida; Baldwin County, Alabama. It was in force for 36 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
Aug 2, 2012, 1:54 PM CDT (18:54 UTC)
Expired
Aug 2, 2012, 2:30 PM CDT
In force
36 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 69 km from the middle of the area, began a volume at 18:57 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, 6.9 hours before the alert went out and 216 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 2012-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1956 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 2012-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -66 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
1956 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-66 m²/s²
0-3 km storm-relative helicity
-56 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.

715 
WUUS54 KMOB 021854
SVRMOB
ALC003-FLC033-021930-
/O.NEW.KMOB.SV.W.0165.120802T1854Z-120802T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
154 PM CDT THU AUG 2 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
  EAST CENTRAL BALDWIN COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 230 PM CDT

* AT 149 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 13 MILES WEST
  OF MOLINO...OR 16 MILES EAST OF STAPLETON...AND MOVING NORTH AT 5
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  RURAL EAST CENTRAL BALDWIN COUNTY
  RURAL WEST CENTRAL ESCAMBIA COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. PREPARE FOR DESTRUCTIVE HAIL AND DAMAGING
WINDS. PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY
FROM WINDOWS.

&&

LAT...LON 3097 8764 3092 8733 3061 8745 3064 8765
TIME...MOT...LOC 1854Z 190DEG 6KT 3072 8753

$$
1 follow-up statement
970 
WWUS54 KMOB 021927
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
227 PM CDT THU AUG 2 2012

ALC003-FLC033-021937-
/O.EXP.KMOB.SV.W.0165.000000T0000Z-120802T1930Z/
ESCAMBIA FL-BALDWIN AL-
227 PM CDT THU AUG 2 2012

...THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE FOR 
EAST CENTRAL BALDWIN AND WEST CENTRAL ESCAMBIA COUNTIES...

AT 225 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR EAST CENTRAL
BALDWIN AND WEST CENTRAL ESCAMBIA COUNTIES HAS WEAKENED TO BELOW
SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED
TO EXPIRE AT 230 PM CDT.

LAT...LON 3097 8764 3092 8733 3061 8745 3064 8765
TIME...MOT...LOC 1927Z 190DEG 6KT 3075 8753

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 1:02 PM CDTAreal Flood AdvisoryMOBEscambia118 min
Aug 2, 2:13 PM CDTSevere Thunderstorm WarningMOBSanta Rosa15 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Severe 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.