Alert archive / Florida / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 8, NWS Tallahassee, FL

February 19, 1996Bay County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 19, 1996, 4:49 PM CST for Bay County, Florida. It was in force for 41 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
Feb 19, 1996, 4:49 PM CST (22:49 UTC)
Expired
Feb 19, 1996, 5:30 PM CST
In force
41 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Bay County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.8 hours before the alert went out and 129 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, Tallahassee Rgnl, FL at 12:00Z on 1996-02-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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, Tallahassee Rgnl, FL at 12:00Z on 1996-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 square meters per square second.19395878Sfc1 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
3 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
171 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 KTLH 192250 RRA
SVRTLH
FLC005-FLZ506-192330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE TSTM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
549 PM EST (449 PM CST) MON FEB 19 1996
 
THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A
SEVERE TSTM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL  630 PM EST (530 
 FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST FLORIDA
 
   ...BAY COUNTY
 
  AND FOR MARINE INTERESTS ON THE GULF COASTAL WATERS FROM THE
 
   ...DESTIN  TO  PANAMA CITY
 
AT 445 CST...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A VERY STRONG
THUNDERSTORM DEVELOPING ALONG THE COAST AND OVER PANAMA CITY BEACH. THIS
THUNDERSTORM IS MOVING NORTHEAST AT 35 MILES AN HOUR AND WILL MOVE
ACROSS THE PANAMA CITY AREA AND WEST BAY DURING THE NEXT HALF HOUR. THIS
STORM HAS THE POTENTIAL TO PRODUCE WIND GUSTS OF 60 MILES AN HOUR AND
LARGE HAIL.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING.
 
SEVERE THUNDERSTORMS PRODUCE WINDS OF 50 KNOTS OR GREATER...
VERY ROUGH SEAS AND LIGHTNING.  YOUR BEST COURSE OF ACTION
IS TO SEEK SAFE HARBOR...BUT IF YOU ARE CAUGHT ON THE OPEN WATER...
STAY BELOW DECK AND AWAY FROM UNGROUNDED METAL OBJECTS. MAKE SURE
YOU AND ALL YOUR CREW ARE WEARING FLOTATION DEVICES.

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 Feb 19, 3:09 PM CST, 1 hour 40 minutes earlier.

Area forecast discussion, Feb 19, 3:09 PM CST, 1 hour 40 minutes before
ALZ065>069-FLZ007>019-026>029-034-200245-

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
347 PM EST MON FEB 19 1996

STG/SVR TSTMS TO W OVR SRN MS MOVG INTO PARTS OF WRN AL ATTM. TOR
WATCH FOR LARGE PART OF FL PNHNDL AND SE AL TIL 02Z. XPCT LINE OF STG
TO SVR TSTMS TO CONT MAKING STEADY EWD PROGRESS THIS EVE. ENTIRE AREA
WILL REMAIN IN FAVORABLE LEFT FRONT QUAD OF 90-100 KT POLAR JET STREAK
WHICH WILL ENHANCE UVVS. NGM ALSO SHOWS DECENT QG SUPPORT AS S/W MOVS
E ALG NRN GULF STATES THRU FIRST PD. GOOD LLVL SUPPORT AS WELL WITH
PLENTY OF ISENT LIFT IN BNDRY LAYER TO SUPPORT DVLPMNT OF DEEP
CONVECTION...ALTHO SFC LOW/TROF WL WEAKEN. THE PROBLEM IS...NW FL AND
SW GA RMN TO E OF PSEUDO WARM FNTL BNDRY WITH DEWPTS ONLY IN UPR 40S
AND LWR 50S AND LWR CAP WHICH WILL LIMIT INSTABILITY FOR THE TIME
BEING. WHILE THIS CAP SHOULD BE ELIMINATED AND HIER DEWPTS SHOULD
ADVECT IN FROM W...THIS MIGHT NOT HAPPEN UNTIL JUST BEFORE ONGOING
CNVCTN ARRIVES. FURTHERMORE...LATEST MDL RUNS INDICATE THAT WIND
FIELDS ARE ABOUT AS STG AS THEY WILL GET RIGHT NOW ACRS LA/MS/AL. LLVL
JET AND MID LVL JETLET ARE ALL FCST TO WEAKEN TWD 06Z AND 12Z AS THEY
MOV EWD...DIMINISHING SR HELICITIES OVR TIME ACRS FCST AREA. ALL THE
SAME...SINCE SVR CONVECTION IS ALREADY IN PROGRESS TO W...WOULD BE IN
FAVOR OF KEEPING PSBL SVR THREAT IN ZNS.  BEYOND 12Z...NO BIG COOL
DOWN XPCTD AFTER S/W AND SFC TROF PASS. BROAD UPR RDG WILL MOV INTO
SRN PLAINS WHICH WILL SUPPORT WEAK SFC HI PRES RDG OVR THE GULF TUE
NITE INTO WED.

AS FOR GUID...WITH ONGOING TRW/RW...CATEGORICAL POPS ARE IN ORDER OVR
FCST AREA TONITE. FWC MIN TOO WARM AT TLH TONITE. WL STICK CLOSE TO
FWC/FAN BLEND DUE TO LACK OF TIME FOR .REST OF FCST.

1) 56/70/53/77 9300
2) 59/71/56/74 9300
3) 58/71/51/79 8300

MOORE

Nearby

Severe Thunderstorm Warnings in Florida, 1996Every severe thunderstorm warning in 1996

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.