Alert archive / Florida / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 111, NWS Tampa Bay, FL

May 22, 1999Lee County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at May 22, 1999, 6:29 PM EDT for Lee County, Florida. It was in force for 46 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: May 22, 1999, 6:29 PM EDT (22:29 UTC)
Expired: May 22, 1999, 7:15 PM EDT
In force: 46 min
Issued by: NWS Tampa Bay, FL
Area: Whole counties

County Lee County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 10.5 hours before the alert went out and 179 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: 1433 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: -5 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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 7:30 PM EDT, 22 hours 59 minutes earlier.

Area forecast discussion, May 21, 7:30 PM EDT, 22 hours 59 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 1:44 PM EDT	Severe Thunderstorm Warning	TBW	Citrus	46 min
May 22, 2:28 PM EDT	Severe Thunderstorm Warning	TBW	Citrus	47 min
May 22, 2:49 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	46 min
May 22, 3:34 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	41 min
May 22, 3:42 PM EDT	Severe Thunderstorm Warning	TBW	Lee	38 min
May 22, 4:28 PM EDT	Severe Thunderstorm Warning	TBW	Manatee	62 min
May 22, 4:40 PM EDT	Severe Thunderstorm Warning	TBW	DeSoto	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.