Alert archive / Florida / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

March 30, 1996Hernando County, Sumter County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 30, 1996, 5:48 PM EST for Hernando County, Sumter County, Florida. It was in force for 42 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: Mar 30, 1996, 5:48 PM EST (22:48 UTC)
Expired: Mar 30, 1996, 6:30 PM EST
In force: 42 min
Issued by: NWS Tampa Bay, FL
Area: Whole counties

Counties Hernando County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 104 km from the middle of the area, began a volume at 22:49 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
Mar 30, 6:00 PM EST	Thunderstorm Wind	Brooksville, FL

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, 10.8 hours before the alert went out and 104 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: 1385 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS1 KTBW 302249 RRA
SVRTBW
FLC053-119-302330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
548 PM EST SAT MAR 30 1996
 
THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA RUSKIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL FLORIDA
 
   ...EASTERN HERNANDO COUNTY
 
   ...SUMTER COUNTY
 
AT 545 PM EST DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ONE IN THE
VICINITY OF INVERNESS AND ANOTHER NEAR BAYPORT. THESE THUNDERSTORMS
WERE MOVING TO THE NORTHEAST AT 25 TO 30 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
CARS AND MOBILE HOMES ARE NOT SAFE. IF YOU ARE IN THE PATH OF A
SEVERE THUNDERSTORM MOVE TO A REINFORCED BUILDING.
 
THE NATIONAL WEATHER SERVICE IN RUSKIN REQUESTS THAT SKYWARN
UNITS IN THE COUNTY BE ACTIVATED AND FORWARD ALL SIGNIFICANT
WEATHER REPORTS TO OUR OFFICE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 1:49 PM EST	Severe Thunderstorm Warning	TBW	Hillsborough	41 min
Mar 30, 2:30 PM EST	Severe Thunderstorm Warning	TBW	Pasco, Polk	45 min
Mar 30, 3:15 PM EST	Severe Thunderstorm Warning	TBW	Polk	45 min
Mar 30, 3:25 PM EST	Tornado Warning	TBW	Polk	50 min
Mar 30, 3:52 PM EST	Tornado Warning	TBW	Polk	53 min
Mar 30, 3:58 PM EST	Severe Thunderstorm Warning	TBW	Hernando	47 min
Mar 30, 4:17 PM EST	Tornado Warning	TBW	Hernando	43 min
Mar 30, 4:22 PM EST	Severe Thunderstorm Warning	TBW	Levy	38 min
Mar 30, 4:40 PM EST	Severe Thunderstorm Warning	TBW	Sumter	50 min
Mar 30, 4:49 PM EST	Severe Thunderstorm Warning	TBW	Citrus	56 min
Mar 30, 4:58 PM EST	Tornado Warning	TBW	Sumter	47 min

Nearby

Severe Thunderstorm Warnings in Florida, 1996 Every severe thunderstorm warning in 1996

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.