Alert archive / Florida / Flash Flood Warnings in 1998
Flash Flood Warning 7, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this flash flood warning at Jul 10, 1998, 11:53 AM EDT for Pinellas County, Florida. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1998, 11:53 AM EDT (15:53 UTC)
- Expired
- Jul 10, 1998, 2:00 PM EDT
- In force
- 2 hr
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
County Pinellas County, FL
The radar
The Tampa radar (KTBW), 40 km from the middle of the area, began a volume at 15:55 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.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 3.9 hours before the alert went out and 40 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
- 1941 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 698 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- 10 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 101553 FFWTBW FLC103-101800- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1153 AM EDT FRI JUL 10 1998 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * FLOOD WARNING WARNING FOR... PINELLAS COUNTY IN WEST CENTRAL FLORIDA * UNTIL 200 PM EDT * AT 1147 AM...DOPPLER RADAR INDICATED HEAVY RAIN CONTINUES ACROSS THE NORTHERN PORTIONS OF THE TAMPA BAY AREA. RADAR HAS INDICATED THAT OVER 6 INCHES OF RAIN HAS FALLEN OVER NORTHERN PINELLAS COUNTY. ADDITIONAL RAINFALL CAN BE EXPECTED ACROSS THE PINELLAS COUNTY AREA FOR AT LEAST THE NEXT HOUR. MOST FLOODING DEATHS OCCUR IN AUTOMOBILES. NEVER ATTEMPT TO DRIVE THROUGH WATER WHICH COVERS THE ROADS. PERSONS LIVING IN FLOOD PRONE AREAS NEED TO TAKE ACTION TO PROTECT PROPERTY AND MOVE TO HIGHER GROUND. STAY AWAY FROM STORM DRAINS AND DRAINAGE DITCHES.
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jul 10, 10:20 AM EDT, 1 hour 33 minutes earlier.
Area forecast discussion, Jul 10, 10:20 AM EDT, 1 hour 33 minutes before
AREA FORECAST DISCUSSION...CORRECTED WORDING NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL 1020 AM EDT FRI JUL 10 1998 UPDATED ZONE FORECAST TO REFLECT CURRENT AREA OF PRECIPITATION THAT STRETCHES ALONG A SURFACE BOUNDARY PUSHING SOUTHEAST INTO CENTRAL FLORIDA. URBAN FLOOD ADVISORY ISSUED FOR CITRUS AND HERNANDO COUNTIES UNTIL 1100AM...LOCALLY HEAVY RAIN PROBABLE THROUGH EARLY AFTERNOON FOR TAMPA BAY AREA. MORNING SOUNDINGS INDICATE MOIST ATMOSPHERE. WEAK SURFACE RIDGE AXIS ACROSS THE FLORIDA STRAITS GIVING WESTERLY FLOW ACROSS THE FORECAST AREA. EXPECTING NORMAL SUMMERTIME TREND (DURING WESTERLY FLOW SITUATIONS) OF DECREASING CONVECTION OVER GULF AND COASTAL AREAS DURING THE AFTERNOON...INCREASING COVERAGE INLAND AREAS. WOULD EXPECT GREATEST AND HEAVIEST COVERAGE TO BE ALONG THIS BOUNDARY...AND ALONG OTHER BOUNDARIES SUCH AS SEA AND LAKE BREEZES. THESE BOUNDARIES COULD ALL COME TOGETHER OVER SOUTH CENTRAL FLORIDA THIS AFTERNOON AND COMBINE WITH DIURNAL HEATING TO PRODUCE SIGNIFICANT ADDITIONAL CONVECTIVE DEVELOPMENT IN THAT AREA. MILLER
In the hours before
Special weather statement, Jul 10, 6:00 AM EDT, 5 hours 53 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-102330- WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 600 AM EDT FRI JUL 10 1998 ...LOCALLY HEAVY RAINFALL WITH TODAYS THUNDERSTORMS... ...FIRE DANGER REMAINS HIGH ACROSS SOUTHWEST AND PARTS OF WEST CENTRAL FLORIDA... ABUNDANT AND INCREASING ATMOSPHERIC MOISTURE...COMBINED WITH AN UNSTABLE AIRMASS...WILL BRING A THREAT OF LOCALLY HEAVY RAINFALL TO WEST CENTRAL FLORIDA WITH TODAYS THUNDERSTORM ACTIVITY. COASTAL COUNTIES IN WEST CENTRAL FLORIDA WILL HAVE THE GREATEST POTENTIAL OF SHOWERS AND THUNDERSTORMS THIS MORNING THROUGH EARLY AFTERNOON. BY MID-DAY...THUNDERSTORM ACTIVITY WILL BEGIN TO SHIFT INLAND. INLAND COUNTIES OF...SUMTER...POLK...HIGHLAND...DE SOTO...AND HARDEE ...IN WEST CENTRAL FLORIDA...WILL HAVE THE GREATEST POTENTIAL OF MID AND LATE DAY THUNDERSTORMS. THE PRIMARY THREAT FROM THUNDERSTORMS TODAY WILL BE LOCALLY HEAVY RAIN...WITH ISOLATED RAINFALL AMOUNTS OF 2 TO 3 INCHES...AND FREQUENT DEADLY LIGHTNING. GUSTY WINDS OF UP TO 40 MPH ARE ALSO POSSIBLE WITH A FEW OF THE STRONGER STORMS. ALTHOUGH A SIGNIFICANT AMOUNT OF RAIN FELL OVER WEST CENTRAL FLORIDA ON THURSDAY...CONDITIONS REMAIN FAVORABLE FOR WILDFIRES...ESPECIALLY EAST OF THE U.S. HIGHWAY 41 CORRIDOR...OVER LEVY...SUMTER...CITRUS... HERNANDO AND PASCO COUNTIES. WILDFIRE POTENTIAL REMAINS HIGH OVER MANATEE...SARASOTA...CHARLOTTE ...DE SOTO AND HARDEE COUNTIES WHERE RECENT RAINFALL AMOUNTS HAVE BEEN LIGHT OR ISOLATED...BASED ON THE KEECH-BYRAM DROUGHT INDEX. HYDROPLANING DURING HEAVY RAIN WILL BE A THREAT ON ROADWAYS TODAY. MOTORISTS SHOULD SLOW DOWN AND DRIVE ACCORDING DURING RAPIDLY CHANGING WEATHER CONDITIONS. REMEMBER...LIGHTNING IS DEADLY IF OUTDOORS DURING A LIGHTNING STORM...TAKE COVER INDOORS IMMEDIATELY AND NEVER SEEK SHELTER UNDER A TREE ZALESKI
Special weather statement, Jul 10, 11:00 AM EDT, 53 minutes before
FLZ039-042-043-048>052-055>057-060>062-065-102000- WEST CENTRAL AND SOUTHWEST FLORIDA HAZARDOUS WEATHER OUTLOOK...UPDATE NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1100 AM EDT FRI JUL 10 1998 ...LOCALLY HEAVY RAINFALL TODAY OVER PORTIONS OF CENTRAL FLORIDA... ABUNDANT ATMOSPHERIC MOISTURE...COMBINED WITH AN UNSTABLE AIRMASS... AND A SURFACE BOUNDARY WILL RESULT IN SHOWER AND THUNDERSTORM ACTIVITY THAT WILL BRING A THREAT OF LOCALLY HEAVY RAINFALL THROUGH THIS AFTERNOON FOR PORTIONS OF CENTRAL FLORIDA. RAINFALL AMOUNTS REPORTED THIS MORNING HAVE RANGED FROM 2 TO 5 INCHES...AS A BAND OF HEAVY SHOWERS AND THUNDERSTORMS MOVED FROM CITRUS COUNTY SOUTHEAST INTO THE TAMPA BAY AREA. STREET FLOODING...WITH SOME ROADS IMPASSABLE...HAVE BEEN REPORTED IN SOME OF THESE AREAS. THE COASTAL COUNTIES OF PASCO...PINELLAS...HILLSBOROUGH...AND MANATEE IN WEST CENTRAL FLORIDA WILL HAVE THE GREATEST POTENTIAL OF SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN THROUGH EARLY AFTERNOON. BY MID-DAY...THUNDERSTORM ACTIVITY WILL BEGIN TO SHIFT TO INLAND AREAS SUCH AS POLK...HARDEE...DESOTO...AND HIGHLANDS COUNTIES. THE PRIMARY THREAT FROM THUNDERSTORMS TODAY WILL BE LOCALLY HEAVY RAIN RESULTING IN FLOODING OF STREETS AND LOW LYING AREAS. FREQUENT LIGHTNING AND GUSTY WINDS OF UP TO 40 MPH WILL ALSO BE POSSIBLE WITH A FEW OF THE STRONGER STORMS. RESIDENTS LIVING IN LOW LYING AND FLOOD PRONE AREAS SHOULD BE ALERT TO THE POSSIBILITY FOR FLOODING...AND MONITOR LOCAL MEDIA OR NOAA WEATHER RADIO FOR THE LATEST STATEMENTS AND WARNINGS. MOTORISTS SHOULD USE EXTREME CAUTION WHEN DRIVING TODAY. SLOW DOWN AND USE COMMON SENSE. MILLER
Special weather statement, Jul 10, 11:43 AM EDT, 10 minutes before
FLZ050-101600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1143 AM EDT FRI JUL 10 1998 THE TORNADO WARNING FOR PINELLAS COUNTY HAS BEEN CANCELLED. THUNDERSTORMS CONTINUE OVER THE AREA THEREFORE... STAY TUNED TO NOAA WEATHER RADIO...FOR THE LATEST WEATHER UPDATES.
Special weather statement, Jul 10, 11:43 AM EDT, 10 minutes before
FLZ050-101600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 1143 AM EDT FRI JUL 10 1998 THE TORNADO WARNING FOR PINELLAS COUNTY HAS BEEN CANCELLED. THUNDERSTORMS CONTINUE OVER THE AREA THEREFORE... STAY TUNED TO NOAA WEATHER RADIO...FOR THE LATEST WEATHER UPDATES.
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 11:10 AM EDT | Flash Flood Warning | TBW | Pinellas | 60 min |
| Jul 10, 11:21 AM EDT | Tornado Warning | TBW | Pinellas | 34 min |
| Jul 10, 11:32 AM EDT | Flash Flood Warning | TBW | Hillsborough | 118 min |
Nearby
Flash Flood Warnings in Florida, 1998Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.