Alert archive / Florida / Flash Flood Warnings in 1999

Flash Flood Warning 12, NWS Melbourne, FL

October 16, 1999Volusia County, Florida

NWS Melbourne, FL issued this flash flood warning at Oct 16, 1999, 10:02 AM EDT for Volusia County, Florida. It was in force for 6 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
Oct 16, 1999, 10:02 AM EDT (14:02 UTC)
Expired
Oct 16, 1999, 3:55 PM EDT
In force
6 hr
Issued by
NWS Melbourne, FL
Area
Whole counties

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 116 km from the middle of the area, began a volume at 14:03 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

Jacksonville, FL (KJAX), launched 12:00Z, 2.0 hours before the alert went out and 168 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, Jacksonville, FL at 12:00Z on 1999-10-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 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, Jacksonville, FL at 12:00Z on 1999-10-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.193958Sfc1 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
72 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
630 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLB 161405
FFWMLB
FLC127-161955-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
1002 AM EDT SAT OCT 16 1999

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* FLOOD WARNING FOR...
  VOLUSIA COUNTY IN EAST CENTRAL FLORIDA

* UNTIL 355 PM EDT

* AT 955 AM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY
  HEAVY RAIN OVER VOLUSIA COUNTY AND THE NEARSHORE WATERS.  MOVEMENT
  WAS WEST AT 15 MPH..

* THE CIRCULATION ASSOCIATED WITH IRENE CONTINUES TO SPREAD
  TORRENTIAL RAINBANDS ACROSS VOLUSIA COUNTY. RADAR INDICATES
  RAINFALL RATES UP TO AN INCH AN HOUR WITH 4 TO 6 INCHES POSSIBLE
  THROUGH MID AFTERNOON. ALREADY SATURATED GROUND ACROSS VOLUSIA
  COUNTY FROM RAINFALL OVER THE LAST COUPLE DAYS COMBINED WITH THE
  ADDITIONAL RAIN WILL RESULT IN FLOODING OF ROADS AND MAY BRING
  WATER INTO HOUSES THAT HAVE POOR DRAINAGE.


PB

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 Melbourne, FL wrote its last area forecast discussion before this flash flood warning went out at Oct 16, 9:54 AM EDT, 8 minutes earlier.

Area forecast discussion, Oct 16, 9:54 AM EDT, 8 minutes before
EAST CENTRAL FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
954 AM EDT SAT OCT 16 1999

CURRENTLY...IRENE CONTINUES TO MOVE SLOWLY NORTH NORTHEAST.
SATELLITE SHOWS THAT CLOUD TOPS HAVE WARMED BUT NUMEROUS SQUALLS
CONTINUE...ESPECIALLY OVER THE NORTHERN SEMI CIRCLE.

THIS AFTERNOON...WITH SOME RESIDUAL STANDING WATER CONCERNS OVER
MARTIN AND ST LUCIE COUNTIES AND SOME SHOWERS STILL WRAPPING AROUND
THE SOUTH SIDE OF THE HURRICANE...PLAN TO LET THE FLOOD WATCH STAND
THERE BUT INDICATE LOWERING RAIN CHANCES LATE.

MAIN RAINBAND WILL STAY EAST OF LAKE COUNTY BUT DO NOT SEE THE NEED
TO DROP JUST ONE COUNTY FROM THE FLOOD WATCH.

ELSEWHERE...THE CURRENT FORECAST LOOKS GOOD AND ONLY MINOR WORDING
CHANGES EXPECTED.

MARINE...WILL ADJUST WIND DIRECTIONS SLIGHTLY AS THE TROPICAL
CYCLONE LIFTS SLOWLY NORTH NORTHEAST.  ALSO SEAS WILL BE BUMPED UP
OVER THE NORTH LEG BASED ON BUOY REPORT SHOWING HEIGHTS SLIGHTLY OVER
20 FEET.

.MLB...TROPICAL STORM WARNING AND SMALL CRAFT REMAIN IN PORT FLAGLER
BEACH TO JUPITER INLET. WIND ADVISORY INTERIOR COUNTIES AND FLOOD
WATCH ALL OF EAST CENTRAL FLORIDA TODAY.

LASCODY

In the hours before

Special weather statement, Oct 16, 6:15 AM EDT, 3 hours 47 minutes before
AMZ550-555-570-575-FLZ041-044>047-053-054-058-059-064-162000-

EAST CENTRAL FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MELBOURNE FL
615 AM EDT SAT OCT 16 1999

FOR DETAILED INFORMATION REGARDING WEATHER HAZARDS ASSOCIATED WITH
HURRICANE IRENE AND THE EXPECTED IMPACTS TO EAST CENTRAL FLORIDA...
PLEASE REFER TO THE LATEST HURRICANE LOCAL STATEMENT.

TROUTMAN
Special weather statement, Oct 16, 6:15 AM EDT, 3 hours 47 minutes before
AMZ550-555-570-575-FLZ041-044>047-053-054-058-059-064-162000-

EAST CENTRAL FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MELBOURNE FL
615 AM EDT SAT OCT 16 1999

FOR DETAILED INFORMATION REGARDING WEATHER HAZARDS ASSOCIATED WITH
HURRICANE IRENE AND THE EXPECTED IMPACTS TO EAST CENTRAL FLORIDA...
PLEASE REFER TO THE LATEST HURRICANE LOCAL STATEMENT.

TROUTMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 16, 4:50 AM EDTFlash Flood WarningMLBIndian River3 hr
Oct 16, 6:50 AM EDTFlash Flood WarningMLBBrevard3 hr
Oct 16, 7:50 AM EDTFlash Flood WarningMLBIndian River115 min
Oct 16, 9:50 AM EDTFlash Flood WarningMLBBrevard3 hr

Nearby

Flash Flood Warnings in Florida, 1999Every flash flood warning in 1999

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.