Alert archive / Florida / Flash Flood Warnings in 2002

Flash Flood Warning 6, NWS Tampa Bay, FL

June 24, 2002Hillsborough County, Florida

NWS Tampa Bay, FL issued this flash flood warning at Jun 24, 2002, 6:33 PM EDT for Hillsborough County, Florida. It was in force for 42 min. 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, 2002, 6:33 PM EDT (22:33 UTC)
Expired: Jun 24, 2002, 7:15 PM EDT
In force: 42 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 22:34 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 10.6 hours before the alert went out and 192 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2342 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 503 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: -21 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 
WGUS52 KTBW 242233
FFWTBW
FLC057-242315-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
630 PM EDT MON JUN 24 2002

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS EXTENDED A

* FLOOD WARNING FOR...
  WESTERN HILLSBOROUGH COUNTY IN FLORIDA.

  FLOODING WILL AFFECT THE FOLLOWING CITIES.
  TAMPA.

* UNTIL 715 PM EDT.

* AT 630 PM EDT...RAINS HAD TAPERED OFF SOMEWHAT.  
HOWEVER...MODERATE RAINS WILL CONTINUE TO KEEP THE FLOOD THREAT FOR 
MUCH OF TAMPA THROUGH EARLY EVENING.  CONDITIONS SHOULD GRADUALLY 
IMPROVE BY SUNSET.

AT 630 PM EDT...WEATHER SPOTTERS ALSO REPORTED FLOODING IN THE 
FOLLOWING LOCATIONS:

TAMPA ALONG BAYSHORE BOULEVARD.

HILLSBOROUGH AVENUE BETWEEN 30TH AND 40TH STREET.  THIS INCLUDED 
WATER UP TO 3 FEET HIGH ALONG SIDEWALKS AND 2 FEET HIGH ON THE 
ROADWAY.

EXCESSIVE RUNOFF WILL CAUSE FLOODING OF LOW LYING AREAS AND 
INTERSECTIONS. POOR DRAINAGE AREAS ARE MOST AT RISK. DO NOT DRIVE 
THROUGH FLOODED ROADS

$$

LAT...LON 2797 8254 2793 8246 2802 8240 2804 8249

88
NNNN

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 Jun 24, 2:45 PM EDT, 3 hours 48 minutes earlier.

Area forecast discussion, Jun 24, 2:45 PM EDT, 3 hours 48 minutes before

WEST CENTRAL AND SOUTHWEST FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
245 PM EDT MON JUN 24 2002

CURRENTLY...NORTHWARD MOVING RW/TSTM CONTINUE TO FORM ACROSS THE
CWFA WITH SCATTERED COVERAGE ATTM UNDER MOSTLY CLOUDY TO CLOUDY
SKIES. STORMS GENERALLY SLOW MOVING AND FEEL GREATEST THREAT THIS
AFTERNOON WILL BE LOCALLY HEAVY PCPN WHICH IS HANDLED WELL IN ZONES
AND ZONES. HOWEVER A FLOOD STATEMENT HAS BEEN ISSUED FOR LEE CNTY
AND OTHERS MAY BE NEEDED LATER THIS AFTERNOON AND EVENING.

FORECAST(TONIGHT-THU)...MODELS CONTINUE TO BE IN GENERALLY GOOD
AGREEMENT...HOWEVER...AVN/NGM SEEM TO VERIFY AND INITIALIZE BETTER
SO WILL BLEND THOSE TWO. IN ADDITION...THE ETA/MESO ETA PUSH THE
SFC RIDGE TO OUR SOUTH WHILE THE AVN/NGM KEEP THE RIDGE AXIS ACROSS
CENTRAL FLORIDA WHICH SEEMS MORE REASONABLE.
     UPPER LOW OVER CENTRAL GULF COAST SHIFTS WEST AND THEN LIFTS
NORTHWARD AS DEEP LAYER RIDGING STARTS TO BUILD IN ACROSS FL WITH
PWATS CONTINUING IN THE 2 1/4 INCH RANGE THROUGH THU. SURFACE RIDGE
AXIS SETS UP RIGHT OVER US(TBW) BUT WITH A WEAK ENOUGH GRADIENT TO
ALLOW AFTERNOON SEAS BREEZES. WILL MAINTAIN CURRENT TREND IN ZONES
FOR LIKELY POPS DURING THE DAY AND SCATTERED AT NIGHT. PLAN TO BLEND
MAV AND CLIMO FOR TEMPS...WITH A COOL BIAS.

EXTENDED...(FRI-MON)...UPPER RIDGING TO CONTINUE OVER NORTHERN FL
AS A SURFACE RIDGE AXIS RESIDES ACROSS THE CENTRAL PENINSULA WITH
A DECREASE IN MOISTURE. HOWEVER ENOUGH LOWER LEVEL MOISTURE WILL
REMAIN TO SUPPORT SCATTERED CONVECTION. THE SURFACE RIDGE AXIS
WILL BE WEAK ENOUGH FOR A SEA BREEZE WHICH WILL DRIVE AFTERNOON AND
EVENING TSTMS EACH DAY THROUGH THE PERIOD.

MARINE...NO HIGHLIGHTS WITH SOUTHERLY WINDS AROUND 10 KNOTS...BUT
SHIFTING TO ONSHORE DURING THE AFTERNOON SEA BREEZE. WINDS WILL
SLOWLY SHIFT INTO THE SOUTHEAST BY THE END OF THE COASTAL WATERS
EXTENDED PERIOD.

FIRE WEATHER...NO CONCERNS.

PRELIMINARY #S
BKV 072/088 071/089 5746
TPA 073/088 073/089 5746
GIF 072/089 072/090 4756
SRQ 071/087 071/088 5756
FMY 073/089 072/090 4646

.TBW...NONE.

/09/RKR/

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 4:50 PM EDT	Flash Flood Warning	TBW	Polk	70 min
Jun 24, 5:27 PM EDT	Flash Flood Warning	TBW	Hillsborough	63 min

Nearby

Flash Flood Warnings in Florida, 2002 Every flash flood warning in 2002

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.