Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 272, NWS Mobile, AL

November 6, 1997Okaloosa County, Florida; Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Nov 6, 1997, 12:17 PM CST for Okaloosa County, Florida; Covington County, Alabama. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 6, 1997, 12:17 PM CST (18:17 UTC)
Expired: Nov 6, 1997, 1:15 PM CST
In force: 58 min
Issued by: NWS Mobile, AL
Area: Whole counties

Counties Covington County, AL, Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 72 km from the middle of the area, began a volume at 18:21 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

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 6.3 hours before the alert went out and 53 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 814 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 145 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.

000 
TTAA00 KMOB 061819 RRA
SVRMOB
ALC039-FLC091-061915-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1217 PM CST THU NOV 6 1997
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  115 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH ALABAMA
 
   ...COVINGTON COUNTY
 
 
IN NORTHWEST FLORIDA
 
   ...OKALOOSA COUNTY
 
 
 
 
AT 1210 PM CST...NWS DOPPLER WEATHER RADAR IN MOBILE INDICATED A
DEVELOPING LINE OF SCATTERED SEVERE THUNDERSTORMS THAT WERE PRODUCING
LARGE HAIL. THIS LINE WAS DEVELOPING FROM SOUTHERN COVINGTON COUNTY
ALABAMA SOUTWEST TO PENSACOLA FLORIDA. INDIVIDUAL STORMS WERE MOVING
EAST-NORTHEAST AT 30 MPH.
 
A SEVERE STORM WAS ENTERING SOUTHWEST COVINGTON COUNTY AND WILL MOVE TO
10 MILES SOUTH OF OPP, ALABAMA BY 115 PM CST.  THREE SEVERE STORM WILL
ENTER OKALOOSA COUNTY...ALONG AND NORTH OF I-10 AND WILL MOVE OVER THE
NORTH PORTION OF THE COUNTY THROUGH 115 PM CST. AGAIN..LARGE HAIL IS THE
MAIN THREAT FROM THESE STORMS.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 6, 11:23 AM CST	Severe Thunderstorm Warning	MOB	Escambia	67 min
Nov 6, 11:59 AM CST	Severe Thunderstorm Warning	MOB	Santa Rosa	46 min
Nov 6, 10:59 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	61 min

Nearby

Severe Thunderstorm Warnings in Florida, 1997 Severe Thunderstorm Warnings in Alabama, 1997 Every severe thunderstorm warning in 1997

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.