Alert archive / Florida / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 63, NWS Tampa Bay, FL

May 10, 1999Citrus County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at May 10, 1999, 4:41 PM EDT for Citrus County, Florida. It was in force for 64 min. 1 report 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
May 10, 1999, 4:41 PM EDT (20:41 UTC)
Expired
May 10, 1999, 5:45 PM EDT
In force
64 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Citrus County, FL

What was reported inside it

TimeReportWhereRemark
May 10, 4:45 PM EDTHail 1Beverly Hills, FLQuarter to dime sized hail was reported from Beverly Hills to near Citrus Springs by Skywarn Spotters.

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 nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 8.7 hours before the alert went out and 200 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, Jacksonville, FL at 12:00Z on 1999-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Jacksonville, FL at 12:00Z on 1999-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.1939Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2026 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
0 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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 8:14 PM EDTSevere Thunderstorm WarningTBWCharlotte46 min
May 10, 2:44 PM EDTSevere Thunderstorm WarningTBWPasco46 min
May 10, 2:52 PM EDTSevere Thunderstorm WarningTBWHillsborough48 min
May 10, 3:27 PM EDTSevere Thunderstorm WarningTBWPasco63 min
May 10, 3:47 PM EDTSevere Thunderstorm WarningTBWHillsborough63 min
May 10, 4:21 PM EDTSevere Thunderstorm WarningTBWLee64 min
May 10, 4:39 PM EDTSevere Thunderstorm WarningTBWManatee61 min
May 10, 4:49 PM EDTSevere Thunderstorm WarningTBWCharlotte61 min
May 10, 4:52 PM EDTSevere Thunderstorm WarningTBWHighlands58 min
May 10, 5:21 PM EDTSevere Thunderstorm WarningTBWLee64 min

Nearby

Severe Thunderstorm Warnings in Florida, 1999Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.