Alert archive / Florida / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 40, NWS Mobile, AL

May 31, 2004Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 31, 2004, 5:31 PM CDT for Escambia County, Florida; Baldwin County, Alabama. It was in force for 29 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 31, 2004, 5:31 PM CDT (22:31 UTC)
Expired: May 31, 2004, 6:00 PM CDT
In force: 29 min
Issued by: NWS Mobile, AL
Area: Counties, with a storm outline in the text

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 90 km from the middle of the area, began a volume at 22:31 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 12:00Z, 10.5 hours before the alert went out and 224 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1274 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

950 
WUUS54 KMOB 312231
SVRMOB
ALC003-FLC033-312300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
530 PM CDT MON MAY 31 2004

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 600 PM CDT

* AT 530 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  ORANGE BEACH...OR ABOUT 24 MILES WEST OF PENSACOLA...AND MOVING
  EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  JOHNSONS BEACH AND PERDIDO KEY BY 540 PM CDT
  PENSACOLA PASS BY 550 PM CDT
  FORT PICKENS AND PENSACOLA NAVAL BASE BY 555 PM CDT
  6 MILES WEST OF PENSACOLA BEACH BY 600 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING.
TAKE COVER IN A STURDY SHELTER UNTIL THE STORM HAS PASSED.

LAT...LON 3041 8762 3041 8737 3042 8717 3040 8724
          3035 8727 3033 8719 3033 8728 3027 8762

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 6:02 PM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	28 min
May 31, 8:07 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	23 min
May 31, 12:00 PM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	60 min
May 31, 12:30 PM CDT	Special Marine Warning	MOB		2 hr
May 31, 12:30 PM CDT	Special Marine Warning	MOB		2 hr
May 31, 1:25 PM CDT	Severe Thunderstorm Warning	MOB	Covington	50 min
May 31, 1:46 PM CDT	Tornado Warning	MOB	Covington	14 min
May 31, 3:35 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	40 min
May 31, 3:51 PM CDT	Special Marine Warning	MOB		54 min
May 31, 3:51 PM CDT	Special Marine Warning	MOB		54 min
May 31, 4:32 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	28 min
May 31, 4:43 PM CDT	Special Marine Warning	MOB		62 min
May 31, 4:43 PM CDT	Special Marine Warning	MOB		62 min
May 31, 5:02 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	28 min
May 31, 5:45 PM CDT	Special Marine Warning	MOB		60 min

Nearby

Severe Thunderstorm Warnings in Florida, 2004 Severe Thunderstorm Warnings in Alabama, 2004 Every severe thunderstorm warning in 2004

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.