Alert archive / Florida / Flash Flood Warnings in 1997

Flash Flood Warning 2, NWS Jacksonville, FL

April 23, 1997Putnam County, Florida

NWS Jacksonville, FL issued this flash flood warning at Apr 23, 1997, 10:08 AM EDT for Putnam 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
Apr 23, 1997, 10:08 AM EDT (14:08 UTC)
Expired
Apr 23, 1997, 2:15 PM EDT
In force
4 hr
Issued by
NWS Jacksonville, FL
Area
Whole counties

County Putnam County, FL

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 2.1 hours before the alert went out and 99 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 1997-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1997-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -215 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
712 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-215 m²/s²
0-3 km storm-relative helicity
-74 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 231409
FFWJAX
FLC107-231815-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1008 AM EDT WED APR 23 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  215 PM EDT
FOR PERSONS IN THE FOLLOWING LOCATIONS...
 
IN NORTH FLORIDA
 
   ...PUTNAM COUNTY
 
THE PUTNAM COUNTY EMERGENCY MANAGEMENT AGENCY HAS REPORTED SEVERAL
SEVERAL MAJOR ROADWAYS ARE FLOODING AS WELL AS SECONDARY ROADWAYS.
AT THIS TIME THE FOLLOWING MAJOR ROADWAYS ARE FLOODED OR CLOSED...
 
STATE ROAD 20 IS CLOSED IN DOWNTOWN PALATKA
 
WESTERN DR...SOUTHWEST OF PALATKA...FLOODED
US-17 NORTH OF PALATKA...FLOODED
US-17 IN PALATKA AT 16 ST AND 16 ST IS FLOODED.
 
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.
 
SANDRIK
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 4:59 AM EDTTornado WarningJAXNassau31 min
Apr 23, 5:29 AM EDTSevere Thunderstorm WarningJAXDuval61 min
Apr 23, 7:29 AM EDTSevere Thunderstorm WarningJAXClay31 min
Apr 23, 7:38 AM EDTSevere Thunderstorm WarningJAXColumbia, Suwannee37 min
Apr 23, 7:46 AM EDTSevere Thunderstorm WarningJAXSaint Johns44 min
Apr 23, 7:57 AM EDTTornado WarningJAXClay, Putnam33 min
Apr 23, 8:13 AM EDTTornado WarningJAXAlachua47 min
Apr 23, 8:31 AM EDTTornado WarningJAXBradford, Clay59 min
Apr 23, 8:43 AM EDTFlash Flood WarningJAXAlachua4 hr
Apr 23, 9:41 AM EDTSevere Thunderstorm WarningJAXFlagler49 min
Apr 23, 9:56 AM EDTTornado WarningJAXMarion64 min
Apr 23, 10:31 AM EDTSevere Thunderstorm WarningJAXFlagler29 min
Apr 23, 11:39 AM EDTSevere Thunderstorm WarningJAXAlachua36 min
Apr 23, 11:50 AM EDTSevere Thunderstorm WarningJAXClay40 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.