Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 301, NWS Mobile, AL

August 29, 2000Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Aug 29, 2000, 3:43 PM CDT for Okaloosa County, Florida. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 29, 2000, 3:43 PM CDT (20:43 UTC)
Expired: Aug 29, 2000, 4:15 PM CDT
In force: 32 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Okaloosa County, FL

What was reported inside it

Time	Report	Where	Remark
Aug 29, 3:50 PM CDT	Hail 1.75	Niceville, FL	Golfball sized hail was reported as a thunderstorm moved through the community.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 8.7 hours before the alert went out and 22 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: 600 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 2025 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

968 
WUUS54 KMOB 292043
SVRMOB
FLC091-292115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
343 PM CDT TUE AUG 29 2000

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OKALOOSA COUNTY IN NORTHWEST FLORIDA
  THIS INCLUDES THE CITY OF NICEVILLE

* UNTIL 415 PM CDT

* AT 343 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHEAST OF NICEVILLE...MOVING SOUTH
  AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   VALPARAISO BY 350 PM CDT
   EGLIN AFB BY 400 PM CDT
   DESTIN BY 405 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN MOBILE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 5:55 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	35 min

Nearby

Severe Thunderstorm Warnings in Florida, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.