Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 55, NWS Tallahassee, FL

May 15, 1997Holmes County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at May 15, 1997, 3:32 PM CDT for Holmes County, Florida. It was in force for 28 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
May 15, 1997, 3:32 PM CDT (20:32 UTC)
Expired
May 15, 1997, 4:00 PM CDT
In force
28 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Holmes County, FL

The radar

The Eglin Afb radar (KEVX), 35 km from the middle of the area, began a volume at 20:35 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, 8.5 hours before the alert went out and 79 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, Eglin AFB/Valpar, FL at 12:00Z on 1997-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 991 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Eglin AFB/Valpar, FL at 12:00Z on 1997-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.1939587897Sfc1 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
991 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
615 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTLH 152033 RRA
SVRTLH
FLC059-152100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
432 PM EDT (332 PM CDT) THU MAY 15 1997
 
THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM EDT (400 PM CDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST FLORIDA
 
   ...HOLMES COUNTY
 
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
IN HOLMES COUNTY JUST NORTH OF BONIFAY. THIS STORM IS MOVING EAST
SOUTHEAST AT 20 MPH. LARGE HAIL IS LIKELY WITH THIS STORM AS IT MOVES
THROUGH THE AREA.
 
 
 
DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING
ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK SHELTER IN A STRONG
BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES. A MOBILE HOME IS NOT A SAFE REFUGE FROM A
SEVERE THUNDERSTORM...MOVE TO A MORE SUBSTANTIAL BUILDING.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 15, 3:11 PM CDT, 21 minutes earlier.

Area forecast discussion, May 15, 3:11 PM CDT, 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
400 PM EDT THU MAY 15 1997

LTL TIME FOR DISCUSSION AS CURRENTLY HV WIDESPREAD HAIL EVENT.
NO SIG CHANGES TO PKGS XCPT TO UPDATE FOR TSTRM ACTIVITY.

#4

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 15, 2:32 PM CDTSevere Thunderstorm WarningTAEHolmes58 min
May 15, 2:42 PM CDTSevere Thunderstorm WarningTAEWalton63 min
May 15, 2:59 PM CDTSevere Thunderstorm WarningTAEJackson61 min
May 15, 3:55 PM CDTSevere Thunderstorm WarningTAEGadsden65 min
May 15, 4:59 PM CDTSevere Thunderstorm WarningTAELeon61 min
May 15, 5:32 PM CDTSevere Thunderstorm WarningTAEJefferson43 min
May 15, 6:09 PM CDTSevere Thunderstorm WarningTAEMadison, Taylor66 min

Nearby

Severe Thunderstorm Warnings in Florida, 1997Every 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.