Alert archive / Florida / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 60, NWS Tallahassee, FL

April 9, 1998Madison County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 9, 1998, 4:28 AM EDT for Madison County, Florida. It was in force for 32 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
Apr 9, 1998, 4:28 AM EDT (08:28 UTC)
Expired
Apr 9, 1998, 5:00 AM EDT
In force
32 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Madison County, FL

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 9, 2:30 AM EDTTornado WatchSPC5 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.5 hours before the alert went out and 80 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 1998-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1577 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 1998-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 219 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1577 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
219 m²/s²
0-3 km storm-relative helicity
311 m²/s²
Significant tornado parameter
2.4
Supercell composite
9.0

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 Apr 9, 4:00 AM EDT, 28 minutes earlier.

Area forecast discussion, Apr 9, 4:00 AM EDT, 28 minutes before
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In the hours before

Local storm report, Apr 9, 2:51 AM EDT, 1 hour 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
251 AM EDT THU APR 09 1998

TIME(EST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1250 AM    TIFTON                    GA   .75 INCH HAIL
04/09/98   TIFT                           MARBLE TO DIME SIZED HAIL
                                          COVERING THE GROUND.

0110 AM    OCILLA                    GA   .88 INCH HAIL
04/09/98d   IRWIN                          NICKEL SIZED HAIL AT
                                          SHERIFFS OFFICE.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 9:39 PM EDTSevere Thunderstorm WarningTAEJackson31 min
Apr 9, 3:42 AM EDTSevere Thunderstorm WarningTAEWakulla33 min
Apr 9, 1:45 AM EDTSevere Thunderstorm WarningTAETift30 min
Apr 9, 1:57 AM EDTSevere Thunderstorm WarningTAEIrwin33 min

Nearby

Severe Thunderstorm Warnings in Florida, 1998Every severe thunderstorm warning 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.