Alert archive / Florida / Tornado Warnings in 1999
Tornado Warning 17, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this tornado warning at Jul 23, 1999, 3:59 PM EDT for Hernando County, Florida. It was in force for 31 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
- Jul 23, 1999, 3:59 PM EDT (19:59 UTC)
- Expired
- Jul 23, 1999, 4:30 PM EDT
- In force
- 31 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Hernando County, FL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 23, 4:19 PM EDT | Thunderstorm Wind | Brooksville, FL | The Hernando Sheriffs Department reported that thunderstorm winds downed a few large trees and power lines near the intersection of County Road 493 (Sunshine Grove Road) and State Road 50. |
| Jul 23, 4:19 PM EDT | Hail 1 | Brooksville, FL | Quarter sized hail was reported by the Hernando County Sheriffs Department near the intersection of County Road 493 (Sunshine Grove Road) and State Road 50. |
| Jul 23, 4:30 PM EDT | Thunderstorm Wind | Brooksville, FL | The Hernando County Sheriffs Department reported that thunderstorm winds downed a few large trees and branches near the intersection of Croom and Weatherly Roads. |
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, 8.0 hours before the alert went out and 95 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
- 348 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 902 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTBW 232000 RRA TORTBW FLC053-232030- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 359 PM EDT FRI JUL 23 1999 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * TORNADO WARNING FOR... HERNANDO COUNTY IN WEST CENTRAL FLORIDA * UNTIL 430 PM EDT * AT 357 PM...A TORNADO WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR 5 MILES WEST OF BROOKSVILLE MOVING SOUTH AT 5 MPH. * SOME LOCATIONS AFFECTED... BROOKRIDGE AT 415 PM THIS IS A DANGEROUS SITUATION. PERSONS IN THE PATH OF THE STORM NEED TO TAKE COVER IN A STURDY BUILDING. MOBILE HOMES AND CARS ARE NOT SAFE.
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Jul 23, 3:31 PM EDT, 28 minutes earlier.
Area forecast discussion, Jul 23, 3:31 PM EDT, 28 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL 255 PM EDT FRI JUL 23 1999 CURRENTLY...88D SHOWING SCATTERED SHOWERS AND THUNDERSTORMS OVER NORTHERN FA ALONG SEABREEZE WITHIN 20 MILES OF THE COAST. CELL MOVEMENT IS GENERALLY NORTH. REMAINDER TODAY AND SATURDAY... SURFACE RIDGE WILL REMAIN OVER SOUTH FL PROVIDING LIGHT SOUTHWESTERLY SURFACE FLOW OVER FA. WIND BECOMES EASTERLY IN MID AND UPPER LEVELS AS TUTT OVER FL STRAITS DRIFTS WEST. AS TUTT DRIFTS OVER GULF... UPPER FLOW BECOMES MORE SOUTHEAST AND MID LEVEL FLOW BECOMES MORE SOUTHWEST. NET RESULT IS DRIER AND SOMEWHAT WARMER AIR ALOFT WILL KEEP LOW LEVEL MOISTURE. THIS WILL PROVIDE OUR TYPICAL LOWER TOPPED MORNING CONVECTION SATURDAY. EAST COAST SEABREEZE WILL MERGE FIRST OVER S FL AND CONTINUE MERGING NORTHWARD THROUGH THE INTERIOR. MARINE...NO HIGHLIGHTS AS SW SYNOPTIC FLOW REMAINS BELOW 15 KTS. 03
In the hours before
Local storm report, Jul 23, 12:05 PM EDT, 3 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
NOON EDT FRI JUL 23 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
900 PM BEVERLY HILLS FL THUNDERSTORM WIND DAMAGE.
07/22/99 CITRUS A FEW TREES UPROOTED.
REPORTED BY CITRUS EOC.
725 AM 2W ENGLEWOOD FL WATERSPOUT.
07/23/99 CHARLOTTE DISSIPATED AT 742 AM.
REMAINED OVER WATER
NO DAMAGE REPORTED.
REPORTED BY CHARLOTTE EOC.
916 AM 2S VENICE FL WATERSPOUT.
07/23/99 SARASOTA DISSIPATED AT 930 AM.
REMAINED OVER WATER
NO DAMAGE REPORTED.
REPORTED BY PILOT AND
SARASOTA EOC.The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 5:56 PM EDT | Severe Thunderstorm Warning | TBW | Levy | 34 min |
Nearby
Tornado Warnings in Florida, 1999Every tornado warning in 1999Tornadoes 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.