Alert archive / Florida / Flash Flood Warnings in 1997
Flash Flood Warning 6, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this flash flood warning at Sep 26, 1997, 7:50 PM EDT for Hillsborough County, Pinellas County, Florida. It was in force for 4 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
- Sep 26, 1997, 7:50 PM EDT (23:50 UTC)
- Expired
- Sep 27, 1997, 12:00 AM EDT
- In force
- 4 hr
- Issued by
- NWS Tampa Bay, FL
- Area
- Whole counties
Counties Hillsborough County, FL, Pinellas County, FL
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 11.8 hours before the alert went out and 26 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
- 1751 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 483 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTBW 262352 FFWTBW FLC057-103-270400- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 750 PM EDT FRI SEP 26 1997 THE NATIONAL WEATHER SERVICE HAS EXTENDED THE...FLOOD WARNING EFFECTIVE UNTIL MIDNIGHT EDT FOR ...PINELLAS AND HILLSBOROUGH COUNTIES AT 750 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS INDICATING AREAS OF HEAVY RAIN WITH EMBEDDED THUNDERSTORMS OVER MUCH OF THE TAMPA BAY AREA...AS WELL AS OVER THE EASTERN GULF WATERS. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES WILL BE POSSIBLE OVER ALREADY FLOODED AREAS THROUGH MIDNIGHT. A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS BY FOOT OR BY AUTO. IT TAKES LESS THAN TWO FEET OF WATER FOR VEHICLES TO STALL AND BEGIN TO FLOAT. DURING HEAVY RAINS...KEEP CHILDREN AWAY FROM STORM DRAINS... WATER CATCHMENTS...AND WATERWAYS. SHALLOW...GENTLY FLOWING WATER CAN BECOME A RAGING TORRENT IN A MATTER OF MINUTES.
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 Sep 26, 7:50 PM EDT, 0 minutes earlier.
Area forecast discussion, Sep 26, 7:50 PM EDT, 0 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL 750 PM EDT FRI SEP 26 1997 VERY SOGGY OUT THERE. WILL BE BRIEF. FIRST...FOR MEDIA PEOPLE... OUR 88D RAINFALL HAS BEEN UNDERESTIMATING BY HALF THUS FAR. NORMAL FOR TROPICAL RAINS. AT 00Z WE WILL SWITCH OVER TO TROPICAL Z-R RELATIONSHIP AS WL MLB. SHOULD DO A LOT BETTER JOB. OUR RADAR GUY HAS DECIDED NOT TO RESET STP (HOWEVER MLB WILL BE). ON TO WEATHER...DONT SEE WHY FETCH OF HEAVY RAINS WONT CONTINUE ACROSS MAINLY COASTAL COUNTIES OVERNIGHT. EXPECT TO SEE A BREAK SOMEWHAT LATER THIS EVENING...BUT THEN MORE ACTIVITY GETTING GOING CLOSER TOWARD DAYBREAK. INLAND COUNTIES SHOULD BE DRIER OVERNIGHT. AT THIS RATE...MANY LOCATIONS WILL HAVE 10-15 BY SATURDAY AFTERNOON. AFTER TALKING WITH ACE MLB FCSTR...PLAN ON DOING UPDATE AROUND 9PM. ATTM...PLAN ON LOWER POPS A BIT (TO 50%) INLAND. WL KEEP POPS CATEGORICAL COASTAL...STILL HIGHLIGHTING HVY RAINS/FLOODING POTENTIAL. FLOOD WATCH TO CONTINUE. PLAN ON REISSUING FLOOD WARNING FOR TAMPA BAY AREA AT 8PM. UPDATED LIST OF RAINFALL FROM SPOTTERS/AUTOMATIC RAINGAGES ETC TO BE OUT AROUND 9PM EITHER AS FLS OR PNS. NASH
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 26, 11:25 AM EDT | Flash Flood Warning | TBW | Hillsborough, Pinellas | 3 hr |
| Sep 26, 4:35 PM EDT | Flash Flood Warning | TBW | Hillsborough, Pinellas | 3 hr |
Nearby
Flash Flood Warnings in Florida, 1997Every flash flood 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; the sounding from the Mesonet's radiosonde archive.