Alert archive / Florida / Flash Flood Warnings in 2002

Flash Flood Warning 4, NWS Jacksonville, FL

June 22, 2002Marion County, Florida

NWS Jacksonville, FL issued this flash flood warning at Jun 22, 2002, 3:54 PM EDT for Marion County, Florida. It was in force for 81 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 22, 2002, 3:54 PM EDT (19:54 UTC)
Expired: Jun 22, 2002, 5:15 PM EDT
In force: 81 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Marion County, FL

The radar

The Jacksonville radar (KJAX), 146 km from the middle of the area, began a volume at 19:54 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, 7.9 hours before the alert went out and 148 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: 431 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 444 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 52 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 KJAX 221954
FFWJAX
FLC083-222115-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
347 PM EDT SAT JUN 22 2002

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* FLOOD WARNING FOR...
  MARION COUNTY IN NORTHERN FLORIDA

* UNTIL 515 PM EDT

* AT 341 PM EDT...DOPPLER RADAR INDICATED RAIN RATES OF OVER         
  3 INCHES PER HOUR AND A SKYWARN WEATHER SPOTTER ON INTERSTATE 75
  REPORTED VERY HEAVY RAIN NEAR 3 INCHES PER HOUR AND REDUCED        
  VISIBILITY.

* EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE RAPID FLOODING
  OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES.
  ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS
  OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT 
  TO FLOODING.   IN ADDITION A SECOND STORM WILL PASS OVER THE 
  SAME AREAS ALONG I-75...ROUTES 301 AND 441 WILL LIKELY BE
  IMPASSABLE AT SOME POINT.  SEVERAL SMALLER ROADS AND STREETS
  ARE ALREADY REPORTED IMPASSABLE NEAR NORTH AND SOUTH PINE STREETS  
  IN OCALA.

* DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
  ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
  CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
  QUICKLY.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU
ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.

$$

LAT...LON 2912 8232 2948 8230 2948 8221 2942 8219
          2943 8206 2949 8201 2913 8199

WELSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 11:13 AM EDT	Flash Flood Warning	JAX	Clay, Duval, Putnam, Saint Johns	4 hr
Jun 22, 2:31 PM EDT	Tornado Warning	JAX	Marion	59 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.