Alert archive / Florida / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 76, NWS Tallahassee, FL

June 5, 1999Lafayette County, Madison County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 5, 1999, 12:12 PM EDT for Lafayette County, Madison County, Florida. It was in force for 63 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: Jun 5, 1999, 12:12 PM EDT (16:12 UTC)
Expired: Jun 5, 1999, 1:15 PM EDT
In force: 63 min
Issued by: NWS Tallahassee, FL
Area: Whole counties

Counties Lafayette County, FL, Madison County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.2 hours before the alert went out and 96 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: 92 J/kg
Mixed-layer CIN: -230 J/kg
Mixed-layer LCL: 1679 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jun 5, 9:17 AM EDT, 2 hours 55 minutes earlier.

Area forecast discussion, Jun 5, 9:17 AM EDT, 2 hours 55 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 8:56 PM EDT	Severe Thunderstorm Warning	TAE	Leon	49 min
Jun 4, 9:42 PM EDT	Severe Thunderstorm Warning	TAE	Gadsden, Jackson	48 min
Jun 4, 10:01 PM EDT	Severe Thunderstorm Warning	TAE	Jefferson, Leon	49 min
Jun 4, 10:45 PM EDT	Severe Thunderstorm Warning	TAE	Jefferson, Leon, Liberty, Wakulla	60 min
Jun 4, 10:45 PM EDT	Severe Thunderstorm Warning	TAE	Franklin, Gulf	60 min
Jun 5, 5:22 PM EDT	Severe Thunderstorm Warning	TAE	Walton	48 min
Jun 4, 8:49 PM EDT	Tornado Warning	TAE	Dougherty, Worth	31 min
Jun 4, 9:23 PM EDT	Severe Thunderstorm Warning	TAE	Colquitt, Cook, Mitchell	32 min
Jun 4, 9:36 PM EDT	Severe Thunderstorm Warning	TAE	Grady, Thomas	44 min
Jun 4, 9:36 PM EDT	Severe Thunderstorm Warning	TAE	Brooks	44 min
Jun 4, 9:56 PM EDT	Severe Thunderstorm Warning	TAE	Brooks, Thomas	29 min
Jun 4, 9:56 PM EDT	Severe Thunderstorm Warning	TAE	Grady	29 min
Jun 5, 4:42 PM EDT	Severe Thunderstorm Warning	TAE	Worth	48 min
Jun 5, 4:35 PM EDT	Severe Thunderstorm Warning	TAE	Geneva	50 min

Nearby

Severe Thunderstorm Warnings in Florida, 1999 Every severe thunderstorm warning in 1999

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.