Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 19, NWS Tallahassee, FL

January 16, 1997Madison County, Taylor County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jan 16, 1997, 2:47 AM EST for Madison County, Taylor County, Florida. 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: Jan 16, 1997, 2:47 AM EST (07:47 UTC)
Expired: Jan 16, 1997, 3:45 AM EST
In force: 58 min
Issued by: NWS Tallahassee, FL
Area: Whole counties

Counties Madison County, FL, Taylor County, FL

The radar

The Tallahassee radar (KTLH), 78 km from the middle of the area, began a volume at 07:50 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 16, 12:00 AM EST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 7.8 hours before the alert went out and 75 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: 753 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 258 m²/s²
0-3 km storm-relative helicity: 408 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 160800
SVRTLH
FLC079-123-160845-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...RETRANS
NATIONAL WEATHER SERVICE TALLAHASSEE FL
247 AM EST THU JAN 16 1997

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 345 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTH FLORIDA

   ...MADISON AND TAYLOR COUNTIES

AT 245 AM EST RADAR INDICATED SEVERE THUNDERSTORMS MOVING INTO WESTERN
PORTIONS OF TAYLOR AND MADISON COUNTIES. THESE STORMS WILL MOVE EAST AT
45 MPH AND MAY PRODUCE WIND GUSTS IN EXCESS OF 60 MPH.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING.

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 Jan 15, 8:45 PM EST, 6 hours 2 minutes earlier.

Area forecast discussion, Jan 15, 8:45 PM EST, 6 hours 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
845 PM EST WED JAN 15 1997

EXPC BAND OF SHRA WITH EMBEDDED TSRA TO MOV SLOWLY EWD ACRS FCST AREA
THRU LATE EVE/EARLY THU MORN AHD OF SFC CDFNT XTNDG FM SE LA TO XTRM
NW AL ATTM. NOT YET SOLD ON PROSPECT OF SVR TSTMS ACRS FCST AREA LATER
TONITE. HODOGRAPHS ARE IMPRESSIVE TO BE SURE WITH SR HELICITIES IN 350
TO 400 M2/S2 RANGE...BUT SOUNDINGS ARE UNDERWHELMING WITH NO CAPE AT
ALL ON MODIFIED 00Z TLH RAOB. ALTHO EXPC AT LEAST SOME DESTABILIZATION
AS CDFNT APCHS...DOUBT WE WILL SEE SFC CAPES GRTR THAN ABOUT 500 J/KG.
LACK OF INSTABILITY SHOULD PRECLUDE WIDESPREAD STG/SVR TSRA AS CURRENT
CNVTV ACTIVITY MOVS FURTHER E INTO INCREASINGLY MORE STABLE ENVIRON...
ESPECIALLY E OF AQQ RIVER. WILL KEEP OUR EYES ON ANY STG TSRA THAT DO
DVLP GIVEN DECENT SHEAR. CURRENT SET OF PUBLIC FCSTS SEEMS TO HANDLE
THE SITUATION QUITE WELL. EXPC ALL PRECIP TO BE E OF FCST AREA BY
SUNRISE THU.

MOORE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 15, 11:08 PM EST	Severe Thunderstorm Warning	TAE	Walton	67 min
Jan 15, 11:28 PM EST	Tornado Warning	TAE	Walton	47 min
Jan 15, 11:44 PM EST	Severe Thunderstorm Warning	TAE	Holmes, Washington	46 min
Jan 16, 12:05 AM EST	Severe Thunderstorm Warning	TAE	Bay	55 min
Jan 16, 12:09 AM EST	Tornado Warning	TAE	Washington	51 min
Jan 16, 12:28 AM EST	Severe Thunderstorm Warning	TAE	Calhoun, Jackson	62 min
Jan 16, 1:08 AM EST	Severe Thunderstorm Warning	TAE	Gadsden, Liberty	67 min
Jan 16, 1:33 AM EST	Severe Thunderstorm Warning	TAE	Leon	57 min

Nearby

Severe Thunderstorm Warnings in Florida, 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.