Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 16, NWS Tallahassee, FL

January 15, 1997Calhoun County, Jackson County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jan 15, 1997, 11:28 PM CST for Calhoun County, Jackson County, Florida. It was in force for 62 min. 4 reports 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: Jan 15, 1997, 11:28 PM CST (05:28 UTC)
Expired: Jan 16, 1997, 12:30 AM CST
In force: 62 min
Issued by: NWS Tallahassee, FL
Area: Whole counties

Counties Calhoun County, FL, Jackson County, FL

What was reported inside it

Time	Report	Where
Jan 15, 11:43 PM CST	Tornado F2	Camps Head, FL
Jan 15, 11:45 PM CST	Tornado F1	Camps Head, FL
Jan 15, 11:45 PM CST	Thunderstorm Wind	Marianna, FL
Jan 15, 11:50 PM CST	Thunderstorm Wind	Altha, FL

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 watch it was issued in

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

Issued	Product	Office	Lasted
Jan 15, 11:00 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 5.5 hours before the alert went out and 90 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 160530 RRA
SVRTLH
FLC013-063-160630-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1228 AM EST (1128 PM CST) THU JAN 16 1997
 
THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 AM EST (1230 AM CST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST FLORIDA
 
   ...CALHOUN COUNTY...JACKSON COUNTY
 
AT 1125 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS MOVING RAPIDLY EAST ACROSS THE EASTERN
PART OF HOLMES AND WASHINGTON COUNTIES. THIS LINE OF SEVERE STORMS
WILL REACH THE WESTERN PART OF JACKSON COUNTY BY 1130 PM CST...AND
CALHOUN COUNTY AROUND 1135 PM CST...AND WILL PRODUCE DAMAGING WIND
GUSTS OF 60 MPH AS IT RACES EAST ACROSS THE COUNTIES AT 50 MPH. THIS
LINE OF STORMS WILL REACH MARIANNA BY 1150 PM AND BLOUNTSTOWN BY
1155 PM CST.
 
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, 7:45 PM CST, 3 hours 43 minutes earlier.

Area forecast discussion, Jan 15, 7:45 PM CST, 3 hours 43 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, 10:08 PM CST	Severe Thunderstorm Warning	TAE	Walton	67 min
Jan 15, 10:28 PM CST	Tornado Warning	TAE	Walton	47 min
Jan 15, 10:44 PM CST	Severe Thunderstorm Warning	TAE	Holmes, Washington	46 min
Jan 15, 11:05 PM CST	Severe Thunderstorm Warning	TAE	Bay	55 min
Jan 15, 11:09 PM CST	Tornado Warning	TAE	Washington	51 min
Jan 16, 12:08 AM CST	Severe Thunderstorm Warning	TAE	Gadsden, Liberty	67 min
Jan 16, 12:33 AM CST	Severe Thunderstorm Warning	TAE	Leon	57 min
Jan 16, 1:47 AM CST	Severe Thunderstorm Warning	TAE	Madison, Taylor	58 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.