Alert archive / Florida / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 13, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 14, 1999, 11:23 AM EST for Citrus County, Florida. It was in force for 47 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 14, 1999, 11:23 AM EST (16:23 UTC)
- Expired
- Mar 14, 1999, 12:10 PM EST
- In force
- 47 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Citrus County, FL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 14, 11:30 AM EST | Thunderstorm Wind | Lecanto, FL | Thunderstorm winds caused structural damage to a 120-foot-long by 50-foot-wide quonset hut, downed two large metal signs, several large branches and toppled a port-a-potty along State Road 44 near County Road 490. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 14, 7:30 AM EST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 4.4 hours before the alert went out and 128 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.
- Mixed-layer CAPE
- 68 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 803 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 415 m²/s²
- 0-3 km storm-relative helicity
- 506 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KTBW 141625 RRA SVRTBW FLC017-141710- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1123 AM EST SUN MAR 14 1999 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN CITRUS COUNTY IN WEST CENTRAL FLORIDA * UNTIL 1210 PM EST * AT 1120 AM...A SEVERE THUNDERSTORM WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR ABOUT 5 MILES SOUTHWEST OF HOMOSASSA. MOVEMENT TO THE NORTHEAST AT 35 MPH. * SOME LOCATIONS AFFECTED... HOMOSASSA AROUND 1130 AM A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. MOVE INDOORS TO A STURDY BUILDING...MOBILE HOMES ARE NOT SAFE.
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 Mar 14, 10:05 AM EST, 1 hour 18 minutes earlier.
Area forecast discussion, Mar 14, 10:05 AM EST, 1 hour 18 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL 1105 AM EDT SUN MAR 14 1999 LINE OF TSTMS PRESENTLY PUSHING ONSHORE NRN FA AND WILL PUSH EWD THRU CNTRL PNSULA LATE MRNG INTO EARLY AFTN AND THRU SRN FA EARLY TO MID AFTN. TORNADO WATCH IN EFFECT UNTIL 1PM...BUT 88D NOT INDICATING SIGNIFICANT SEVERE CELLS OTHER THAN SOME INDICATION OF OFFSHORE WATERSPOUTS HANDLED WITHIN SPECIAL MARINE WARNINGS. TSTMS BEING SUPPORTED BY 80-100KT WINDS ALF OVR NE GOMEX AND 40-50KT 1K-5K WINDS. VERTICAL PVA AND LFTD INDEX VALUES LACKING AS MAIN 5H TROF PVA LAGGING BACK OVR CNTRL GOMEX THIS MRNG AND WILL NOT SWING THRU UNTIL LATE TDY AND TNGT. LATER ENERGY WILL LIKELY KEEP SOME SHWR POPS INTO TNGT HANDLED BY CURRENT PACKAGE. AFTER COORD WITH TLH...WILL HOLD ONTO COASTAL FLOOD WATCH CEDAR KEY TO VENICE INLET THRU TDY WITH STILL SOME MARGINAL THREAT FOR MINOR COASTAL TIDAL WATER PROBLEMS UNTIL TSTMS PASS THRU AND GET PAST THE PREDICTED HIGH TIDE BETWEEN 1030 AND 1230PM. PRESENT TIDES ARE LCLY 1-2 FT ABOVE PREDICTED...AND PRESENT THINKING IS THAT TIDES WILL LIKELY NOT EXCEED THESE LVLS WHICH WILL PROBABLY KEEP WATER LEVELS UNDER 4 FT MSL CDK AND UNDER 3 FT MSL SWD...WHICH WILL LESSEN THE THREAT FOR ANY SIGNIFICANT TIDAL PROBLEMS DESPITE WINDS SHIFTG TO BREEZY SWLY AND ONSHORE THIS AFTN. INITIAL PLANS WOULD BE TO DROP THE COASTAL FLOOD WATCH FOR THE 5PM FCST PACKAGE. OTHERWISE NO FCST CHANGES EXPECTED THIS MORNING EXCEPT FOR ONGOING MODIFICATIONS TO THE TORNADO WATCH AS THE THREAT ENDS AFTER TSTMS PASS THRU. DMR
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 10:59 AM EST | Severe Thunderstorm Warning | TBW | Hernando | 41 min |
| Mar 14, 11:29 AM EST | Tornado Warning | TBW | Hernando | 46 min |
| Mar 14, 11:39 AM EST | Tornado Warning | TBW | Pasco | 46 min |
| Mar 14, 11:46 AM EST | Tornado Warning | TBW | Citrus | 49 min |
| Mar 14, 12:52 PM EST | Tornado Warning | TBW | Hillsborough, Pasco | 33 min |
| Mar 14, 1:24 PM EST | Severe Thunderstorm Warning | TBW | Sarasota | 46 min |
| Mar 14, 2:19 PM EST | Severe Thunderstorm Warning | TBW | Charlotte | 46 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.