Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 40, NWS Tallahassee, FL

September 29, 1998Gulf County, Florida

NWS Tallahassee, FL issued this tornado warning at Sep 29, 1998, 9:49 AM CDT for Gulf County, Florida. It was in force for 61 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: Sep 29, 1998, 9:49 AM CDT (14:49 UTC)
Expired: Sep 29, 1998, 10:50 AM CDT
In force: 61 min
Issued by: NWS Tallahassee, FL
Area: Whole counties

County Gulf County, FL

The radar

The Eglin Afb radar (KEVX), 97 km from the middle of the area, began a volume at 14:52 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
Sep 28, 10:00 PM CDT	Tornado Watch	SPC	12 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 2.8 hours before the alert went out and 107 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: 675 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 827 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

433 
WFUS1 KTLH 291452 RRA
TORTLH
FLC045-GMZ750-291550-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1049 AM EDT TUE SEP 29 1998

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  GULF COUNTY INCLUDING ADJACENT COASTAL WATERS IN NORTHWESTERN
  FLORIDA

* UNTIL 1150 AM EDT (1050 AM CDT)

* AT 1046 AM EDT (946 AM CDT)... NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A POSSIBLE TORNADO 29 MILES SOUTHWEST OF PORT ST
  JOE MOVING NORTHEAST AT 55 MPH.

* SOME LOCATIONS IN THE PATH OF THIS TORNADO ARE...
CAPE SAN BLAS              BY 1100 AM EDT
PORT ST JOE                BY 1100 AM EDT
WHITE CITY                 BY 1110 AM EDT


IN SCHOOLS AND BUSINESSES...HEED TORNADO SAFETY PLANS OR MOVE TO
AN INTERIOR HALLWAY AWAY FROM WINDOWS.  CROUCH DOWN AND COVER YOUR
HEAD.  AVOID GYMNASIUMS AND CAFETERIAS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 28, 7:55 PM CDT	Tornado Warning	TAE	Walton	15 min
Sep 28, 8:30 PM CDT	Tornado Warning	TAE	Walton	15 min
Sep 29, 12:47 AM CDT	Flash Flood Warning	TAE	Walton	12 hr
Sep 29, 6:52 AM CDT	Tornado Warning	TAE	Holmes, Washington	63 min
Sep 29, 7:51 AM CDT	Flash Flood Warning	TAE	Bay, Holmes, Washington	6 hr
Sep 29, 8:07 AM CDT	Tornado Warning	TAE	Bay	48 min
Sep 29, 8:24 AM CDT	Tornado Warning	TAE	Washington	31 min
Sep 29, 8:49 AM CDT	Tornado Warning	TAE	Holmes	46 min
Sep 29, 9:13 AM CDT	Severe Thunderstorm Warning	TAE	Bay	77 min
Sep 29, 10:13 AM CDT	Severe Thunderstorm Warning	TAE	Calhoun, Jackson	77 min
Sep 29, 2:35 PM CDT	Tornado Warning	TAE	Gulf	35 min
Sep 29, 2:57 PM CDT	Flash Flood Warning	TAE	Gadsden, Leon, Liberty	4 hr
Sep 29, 2:57 PM CDT	Flash Flood Warning	TAE	Franklin, Wakulla	4 hr
Sep 29, 4:14 PM CDT	Severe Thunderstorm Warning	TAE	Leon, Wakulla	76 min
Sep 29, 4:14 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden	76 min
Sep 29, 5:30 PM CDT	Severe Thunderstorm Warning	TAE	Leon, Wakulla	60 min

Nearby

Tornado Warnings in Florida, 1998 Every tornado warning in 1998 Tornadoes in 1998

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.