Alert archive / Florida / Flash Flood Warnings in 1995

Flash Flood Warning 9, NWS Jacksonville, FL

August 25, 1995Duval County, Nassau County, Florida

NWS Jacksonville, FL issued this flash flood warning at Aug 25, 1995, 2:00 AM EDT for Duval County, Nassau County, Florida. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Aug 25, 1995, 2:00 AM EDT (06:00 UTC)
Expired
Aug 25, 1995, 8:00 AM EDT
In force
6 hr
Issued by
NWS Jacksonville, FL
Area
Whole counties

Counties Duval County, FL, Nassau County, FL

The radar

The Jacksonville radar (KJAX), 1 km from the middle of the area, began a volume at 05:59 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 00:00Z, 6.0 hours before the alert went out and 3 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 00:00Z on 1995-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 582 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 1995-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
582 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
466 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
67 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 KJAX 250601
FFWJAX
FLC031-089-251200-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
200 AM EDT FRI AUG 25 1995
 
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  800 AM EDT
FOR PERSONS IN THE FOLLOWING LOCATIONS S...
 
IN NORTH FLORIDA
 
   ...DUVAL COUNTY...NASSAU COUNTY
 
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT BANDS OF SHOWERS
AND THUNERSTORMS CONTINUE TO STREAM OVER DUVAL AND NASSAU COUNTIES THIS
MORNING. WITH RECENT RAINS ACROSS THE AREA LAST EVENING AND WITH HEAVIER
BANDS OF SHOWERS EXPECTED TO MOVE ON SHORE ADDITIONAL AMOUNTS OF 3 TO 5
INCHES WILL BE POSSIBLE THROUGH THE MORNING HOURS.
 
REPORTS FROM STREETS AND DRAINAGE IN JACKSONVILLE INDICATE THAT PROBLEMS
WITH STREET FLOODING IS CONTINUING INSIDE THE CITY LIMITS. ADDITIONAL SO
REPORTS OF MINOR FLOODING OF SOME HOMES HAS BEEN RECEIVED.
 
SHERIFFS OFFICE IN NASSAU COUNTY INDICATES THAT FLOODING ON AMELIA ISLANIS CONTINUING IN SOME LOCATIONS.
 
TROPICAL DEPRESSION JERRY HAS REMAINED NEARLY STATIONARY OVER THE PAST
SEVERAL HOURS. THIS HAS ALLOWED RAIN BANDS TO CONTINUE TO MOVE ONSHORE
OF DUVAL AND NASSAU COUNTIES.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.
 
PETERSON/KUYPER
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 8:04 AM EDTSevere Thunderstorm WarningJAXColumbia56 min
Aug 25, 8:40 AM EDTTornado WarningJAXColumbia43 min

Nearby

Flash Flood Warnings in Florida, 1995Every flash flood warning in 1995

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.