Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 69, NWS Mobile, AL

May 29, 2012Escambia County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at May 29, 2012, 7:28 PM CDT for Escambia County, Florida. It was in force for 17 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
May 29, 2012, 7:28 PM CDT (00:28 UTC)
Expired
May 29, 2012, 7:45 PM CDT
In force
17 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Escambia County, FL

The radar

The Mobile radar (KMOB), 87 km from the middle of the area, began a volume at 00:31 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 00:00Z, 0.5 hours before the alert went out and 229 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 00:00Z on 2012-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 537 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 00:00Z on 2012-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
537 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1739 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
-6 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.

895 
WUUS54 KMOB 300028
SVRMOB
FLC033-300115-
/O.NEW.KMOB.SV.W.0069.120530T0028Z-120530T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
728 PM CDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ESCAMBIA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 815 PM CDT

* AT 726 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 3 MILES WEST
  OF MOLINO...OR 9 MILES NORTH OF CANTONMENT...AND MOVING SOUTH AT 10
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOLINO...             GOULDING...           GONZALEZ...
  FERRY PASS...         ENSLEY...             CANTONMENT...
  BRENT...              BELLVIEW...

THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 1 AND 16.

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 3040 8743 3043 8735 3045 8736 3045 8741
      3051 8745 3064 8739 3068 8741 3071 8748
      3077 8748 3080 8731 3073 8731 3071 8727
      3062 8726 3052 8716 3047 8715 3045 8716
TIME...MOT...LOC 0028Z 347DEG 10KT 3069 8736

$$
1 follow-up statement
485 
WWUS54 KMOB 300045
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
745 PM CDT TUE MAY 29 2012

FLC033-300055-
/O.CAN.KMOB.SV.W.0069.000000T0000Z-120530T0115Z/
ESCAMBIA FL-
745 PM CDT TUE MAY 29 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR CENTRAL
ESCAMBIA COUNTY...

AT 740 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR CENTRAL
ESCAMBIA COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3040 8743 3043 8735 3045 8736 3045 8741
      3051 8745 3064 8739 3068 8741 3071 8748
      3077 8748 3080 8731 3073 8731 3071 8727
      3062 8726 3052 8716 3047 8715 3045 8716
TIME...MOT...LOC 0045Z 347DEG 10KT 3064 8735

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 9:49 PM CDTDense Smoke AdvisoryMOB15 hr
May 30, 1:39 PM CDTDense Smoke AdvisoryMOB18 hr
May 30, 6:20 PM CDTSevere Thunderstorm WarningMOBOkaloosa32 min

Nearby

Severe Thunderstorm Warnings in Florida, 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.