Alert archive / Florida / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 91, NWS Tampa Bay, FL

May 4, 1998Sarasota County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at May 4, 1998, 3:26 PM EDT for Sarasota County, Florida. It was in force for 44 min. 3 reports 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 4, 1998, 3:26 PM EDT (19:26 UTC)
Expired: May 4, 1998, 4:10 PM EDT
In force: 44 min
Issued by: NWS Tampa Bay, FL
Area: Whole counties

County Sarasota County, FL

The radar

The Tampa radar (KTBW), 58 km from the middle of the area, began a volume at 19:27 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 4, 3:30 PM EDT	Thunderstorm Wind	Sarasota, FL	A 65 mph wind gust was reported by a Skywarn Spotter.
May 4, 3:30 PM EDT	Hail 0.75	Sarasota, FL
May 4, 4:00 PM EDT	Thunderstorm Wind	South Venice, FL	A 23 year-old man trying to take down a flag suffered several broken bones when he was lifted and thrown 20 to 30 feet over the corner of a restaurants roof as he clung to the tethered line of the flagpole during a thunderstorm downburst.Thunderstorm winds als

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

Tampa Bay, FL (KTBW), launched 12:00Z, 7.4 hours before the alert went out and 58 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: 281 J/kg
Mixed-layer CIN: -250 J/kg
Mixed-layer LCL: 1611 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 4, 1:57 PM EDT, 1 hour 29 minutes earlier.

Area forecast discussion, May 4, 1:57 PM EDT, 1 hour 29 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 4, 1:36 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	64 min
May 4, 1:40 PM EDT	Severe Thunderstorm Warning	TBW	Polk	50 min
May 4, 1:45 PM EDT	Tornado Warning	TBW	Hernando	35 min
May 4, 2:30 PM EDT	Severe Thunderstorm Warning	TBW	Polk	35 min
May 4, 2:30 PM EDT	Severe Thunderstorm Warning	TBW	Hardee, Highlands, Polk	45 min
May 4, 2:54 PM EDT	Severe Thunderstorm Warning	TBW	Manatee	51 min
May 4, 3:19 PM EDT	Severe Thunderstorm Warning	TBW	Highlands	41 min
May 4, 4:35 PM EDT	Severe Thunderstorm Warning	TBW	Charlotte	45 min
May 4, 5:26 PM EDT	Severe Thunderstorm Warning	TBW	Lee	44 min

Nearby

Severe Thunderstorm Warnings in Florida, 1998 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.