Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 75, NWS Jacksonville, FL

June 13, 1997Duval County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 13, 1997, 4:20 PM EDT for Duval County, Florida. It was in force for 55 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 13, 1997, 4:20 PM EDT (20:20 UTC)
Expired: Jun 13, 1997, 5:15 PM EDT
In force: 55 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Duval County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.3 hours before the alert went out and 255 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: 1043 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 566 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 54 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 Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 13, 3:03 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Jun 13, 3:03 PM EDT, 1 hour 17 minutes before

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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.