Alert archive / Florida / Flash Flood Warnings in 1997

Flash Flood Warning 3, NWS Tampa Bay, FL

June 24, 1997Pasco County, Pinellas County, Florida

NWS Tampa Bay, FL issued this flash flood warning at Jun 24, 1997, 5:33 PM EDT for Pasco County, 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
Jun 24, 1997, 5:33 PM EDT (21:33 UTC)
Expired
Jun 24, 1997, 7:35 PM EDT
In force
2 hr
Issued by
NWS Tampa Bay, FL
Area
Whole counties

Counties Pasco County, FL, Pinellas County, FL

The radar

The Tampa radar (KTBW), 48 km from the middle of the area, began a volume at 21:36 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, 9.6 hours before the alert went out and 48 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 1997-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1382 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 1997-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1382 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
688 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTBW 242134
FFWTBW
FLC101-103-242335-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
533 PM EDT TUE JUN 24 1997

THE NATIONAL WEATHER SERVICE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 735 PM EDT

FOR PEOPLE IN THE FOLLOWING LOCATION(S)

IN WEST CENTRAL FLORIDA

   ...SOUTHWESTERN PASCO COUNTY
   ...NORTHERN PINELLAS COUNTY
 
NWS SPOTTERS HAVE REPORTED SOME ROADS COMPLETELY FLOODED IN THE
TARPON SPRINGS...HOLIDAY...AND NEW PORT RICHEY AREAS. WITH 1 TO 2
MORE INCHES OF RAIN POSSIBLE...MANY AREA ROADS MAY BECOME IMPASSABLE.
 
DO NOT ATTEMPT TO DRIVE THROUGH WATER OF UNKNOWN DEPTHS OR WHICH
COVERS THE ROADWAY. 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.

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 3:55 PM EDTSevere Thunderstorm WarningTBWCharlotte35 min
Jun 24, 4:24 PM EDTSevere Thunderstorm WarningTBWPasco61 min
Jun 24, 4:35 PM EDTTornado WarningTBWHillsborough35 min
Jun 24, 5:13 PM EDTSevere Thunderstorm WarningTBWPinellas47 min

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; radar from the NEXRAD Level II archive.