Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 101, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 5, 1997, 2:26 PM EDT for Hillsborough County, Florida. It was in force for 49 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
- Jul 5, 1997, 2:26 PM EDT (18:26 UTC)
- Expired
- Jul 5, 1997, 3:15 PM EDT
- In force
- 49 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Hillsborough County, FL
The radar
The Tampa radar (KTBW), 23 km from the middle of the area, began a volume at 18:29 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 |
|---|---|---|---|
| Jul 5, 3:00 PM EDT | Thunderstorm Wind | Tampa, FL | Thunderstorm winds downed several medium to large sized trees near LineBaugh and Bougainvillea Roads in Tampa. |
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, 6.4 hours before the alert went out and 23 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
- 1187 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 896 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 72 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 051829 RRA SVRTBW FLC057-051915- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 226 PM EDT SAT JUL 5 1997 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 315 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION(S) IN WEST CENTRAL FLORIDA ...HILLSBOROUGH COUNTY AT 225 PM EDT... NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTHWEST HILLSBOROUGH COUNTY... BETWEEN TAMPA BAY DOWNS AND THE TAMPA INTERNATIONAL AIRPORT. THE THUNDERSTORM WAS DRIFTING SLOWLY NORTHEAST. BY DEFINITION...SEVERE THUNDERSTORMS HAVE WINDS OF 58 MPH OR GREATER AND/OR DIME SIZE HAIL OR LARGER. IF THIS STORM APPROACHES YOU AREA...GO INDOORS AND STAY THERE UNTIL THE STORM PASSES.
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 Jul 5, 2:23 PM EDT, 3 minutes earlier.
Area forecast discussion, Jul 5, 2:23 PM EDT, 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL 220 PM EDT SAT JUL 5 1997 .CURRENT WX...AREA UNDER INFLUENCE OF SOUTHWESTERLY FLOW WITH SCATTERED THUNDERSTORMS OCCURRING THROUGHOUT FORECAST AREA. AT PRESENT THE MOST INTENSE ACTIVITY IS OVER WESTERN PASCO COUNTY AND SCATTERED OUT ACROSS THE GULF. MORE ACTIVITY LOCATED MAINLY OVER INLAND COUNTIES. THIS WX SHOULD CONTINUE THROUGH AT LEAST 8 PM AND WILL BE HANDELED WITH APPROPRIATE STATEMENTS AS NEEDED. CLOSE EXAMINATION OF 850MB HEIGHT FIELD SHOWS RIDGE AXIS FROM BERMUDA HIGH WELL SOUTH OF FA...IT APPEARS TO JET OUT OVER CUBA AND THE YUCATAN PENINSULA. THIS POSITIONING OF RIDGE AXIS WILL KEEP A SOUTHWESTERLY FLOW OVER FA THROUGH TONIGHT AND INTO SUNDAY. HOWEVER...BY MONDAY THE RIDGE AXIS CREEPS UP NORTHWARD AND CENTRAL FLORIDA ENDS UP UNDER A WEAK RIDGE. WHAT THIS MEANS IS THE PRESENT MOIST SOUTHWESTERLY FLOW WILL CONTINUE INTO SUNDAY AND WILL BRING ANOTHER ROUND OF EARLY MORNING AND AFTERNOON SHOWERS AND THUNDESTORMS ALONG THE COAST. AS SEA BREEZE BOUNDARIES KICKS INLAND MORE THUNDERSTORMS WILL DEVELOP INLAND. MONDAY IS A BIT TRICKIER TO PIN DOWN BUT WITH RIDGE AXIS ALMOST OVER FA WOULD THINK THUNDERSTORMS WOULD BE MAINLY THE AFTERNOON TYPE. THE TREND IS MY FRIEND TODAY AND I WOULD GO WITH PERSISTANCE AND KEEP SOME TYPE OF SOUTHWESTERLY WIND AND CURRENT POPS AND TEMPS...I.E...50 POPS FOR FA DURING DAYTIME WITH 20S FOR NIGHTIME HOURS AND TEMPS IN THE LOWER 90S DURING THE DAY COOLING DOWN TO MIDDLE AND UPPER 70S AT NIGHT THROUGH MONDAY. PELATTI
In the hours before
Special weather statement, Jul 5, 11:10 AM EDT, 3 hours 16 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-504-505-051530- WEST CENTRAL AND SOUTHWEST FLORIDA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL 1110 AM EDT SAT JUL 5 1997 ...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FOR NORTHERN PORTIONS OF WEST CENTRAL FLORIDA FROM HILLSBOROUGH AND POLK COUNTIES NORTHWARD... A MOIST AND UNSTABLE AIRMASS...COMBINED WITH AFTERNOON SEA BREEZE ACTIVITY AND A UPPER LEVEL DISTURBANCE MOVING THROUGH NORTHERN PORTIONS OF CENTRAL FLORIDA...WILL TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA THIS AFTERNOON AND EARLY EVENING. SOME STORMS IN THE RISK AREA MAY BECOME SEVERE...MAINLY OVER LEVY AND CITRUS COUNTIES...AND CAN RESULT IN WINDS IN EXCESS OF 58 MPH AND LARGE HAIL. IN ADDITION SLOW MOVING STORMS WILL HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAIN WITH RAINFALL RATES OF UP TO 2 INCHES PER HOUR WHICH MAY CAUSE MINOR FLOODING IN LOW LYING AND POOR DRAINING AREAS. ALL RESIDENTS AND MARINERS IN WEST CENTRAL AND SOUTHWEST FLORIDA PLANNING ANY OUTDOOR ACTIVITY THIS AFTERNOON SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND MOVE TO SAFETY IF THREATENING WEATHER APPROACHES. LISTEN TO NOAA WEATHER RADIO... RADIO...TELEVISION...OR CABLE TELEVISION FOR MORE INFORMATION. PELATTI
Special weather statement, Jul 5, 11:17 AM EDT, 3 hours 9 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-504-505-051530- WEST CENTRAL AND SOUTHWEST FLORIDA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL 1110 AM EDT SAT JUL 5 1997 ...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FOR NORTHERN PORTIONS OF WEST CENTRAL FLORIDA FROM HILLSBOROUGH AND POLK COUNTIES NORTHWARD... A MOIST AND UNSTABLE AIRMASS...COMBINED WITH AFTERNOON SEA BREEZE ACTIVITY AND A UPPER LEVEL DISTURBANCE MOVING THROUGH NORTHERN PORTIONS OF CENTRAL FLORIDA...WILL TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA THIS AFTERNOON AND EARLY EVENING. SOME STORMS IN THE RISK AREA MAY BECOME SEVERE...MAINLY OVER LEVY AND CITRUS COUNTIES...AND CAN RESULT IN WINDS IN EXCESS OF 58 MPH AND LARGE HAIL. IN ADDITION SLOW MOVING STORMS WILL HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAIN WITH RAINFALL RATES OF UP TO 2 INCHES PER HOUR WHICH MAY CAUSE MINOR FLOODING IN LOW LYING AND POOR DRAINING AREAS. ALL RESIDENTS AND MARINERS IN WEST CENTRAL AND SOUTHWEST FLORIDA PLANNING ANY OUTDOOR ACTIVITY THIS AFTERNOON SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND MOVE TO SAFETY IF THREATENING WEATHER APPROACHES. LISTEN TO NOAA WEATHER RADIO... RADIO...TELEVISION...OR CABLE TELEVISION FOR MORE INFORMATION. PELATTI
Special weather statement, Jul 5, 11:18 AM EDT, 3 hours 8 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-504-505-051900- WEST CENTRAL AND SOUTHWEST FLORIDA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL 1110 AM EDT SAT JUL 5 1997 ...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FOR NORTHERN PORTIONS OF WEST CENTRAL FLORIDA FROM HILLSBOROUGH AND POLK COUNTIES NORTHWARD... A MOIST AND UNSTABLE AIRMASS...COMBINED WITH AFTERNOON SEA BREEZE ACTIVITY AND A UPPER LEVEL DISTURBANCE MOVING THROUGH NORTHERN PORTIONS OF CENTRAL FLORIDA...WILL TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS ACROSS WEST CENTRAL AND SOUTHWEST FLORIDA THIS AFTERNOON AND EARLY EVENING. SOME STORMS IN THE RISK AREA MAY BECOME SEVERE...MAINLY OVER LEVY AND CITRUS COUNTIES...AND CAN RESULT IN WINDS IN EXCESS OF 58 MPH AND LARGE HAIL. IN ADDITION SLOW MOVING STORMS WILL HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAIN WITH RAINFALL RATES OF UP TO 2 INCHES PER HOUR WHICH MAY CAUSE MINOR FLOODING IN LOW LYING AND POOR DRAINING AREAS. ALL RESIDENTS AND MARINERS IN WEST CENTRAL AND SOUTHWEST FLORIDA PLANNING ANY OUTDOOR ACTIVITY THIS AFTERNOON SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND MOVE TO SAFETY IF THREATENING WEA THER APPROACHES. LISTEN TO NOAA WEATHER RADIO... RADIO...TELEVISION...OR CABLE TELEVISION FOR MORE INFORMATION. PELATTI
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 7:59 AM EDT | Severe Thunderstorm Warning | TBW | Hernando | 46 min |
| Jul 5, 1:43 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 47 min |
| Jul 5, 2:13 PM EDT | Severe Thunderstorm Warning | TBW | Hernando | 32 min |
| Jul 5, 6:46 PM EDT | Severe Thunderstorm Warning | TBW | Pinellas | 44 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1997Every severe thunderstorm warning in 1997
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.