Flash Flood Warning 2, NWS Jacksonville, FL

Issued

Jun 11, 1999, 4:47 AM EDT (08:47 UTC)

Expired

Jun 11, 1999, 10:45 AM EDT

In force

6 hr

Issued by

NWS Jacksonville, FL

Area

Whole counties

County Glynn County, GA

The Jacksonville radar (KJAX), 83 km from the middle of the area, began a volume at 08:48 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.

000 
TTAA00 KJAX 110847
FFWJAX
GAC127-111445-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
447 AM EDT FRI JUN 11 1999

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* FLOOD WARNING FOR...
  GLYNN COUNTY COUNTY IN SOUTHEASTERN GEORGIA

* UNTIL 1045 AM EDT

* AT 430AM NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES THAT
BETWEEN 3 AND 5 INCHES OF RAIN HAS FALLEN OVER PORTIONS OF GLYNN COUNTY
DURING THE PAST THREE HOURS WITH ANOTHER 1 TO 2 INCHES MORE POSSIBLE.
THE HEAVIEST AMOUNTS HAVE BEEN INDICATED IN THE ST SIMONS ISLAND...
BRUNSWICK AND SEA ISLAND AREAS. THE RAINFALL WILL CONTINUE THROUGH THE
MORNING COMMUTE THEREFORE MOTORISTS ARE URGED TO USE EXTRA CAUTION AND
ALLOW EXTRA TIME IN REACHING THEIR DESTINATION.

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.
MOVE TO HIGHER GROUND.

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. IT IS VERY DIFFICULT
AT NIGHT TO TELL HOW MUCH WATER IS ON ROADS. MOTORISTS SHOULD NOT
DRIVE THROUGH WATER OF UNKNOWN DEPTH.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION
FOR THE LATEST WEATHER INFORMATION.

MOBBS

NWS Jacksonville, FL wrote its last area forecast discussion before this flash flood warning went out at Jun 11, 2:25 AM EDT, 2 hours 22 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
225 AM EDT FRI JUN 11 1999

CONVECTION IS POPPING ONCE AGAIN OVER THE COASTAL COUNTIES OF
NORTHEAST FL. HATE TO AMD AT 2 AM BUT IT WOULD APPEAR NECESSARY AT
THIS POINT.

WATER VAPOR IMAGERY CONTINUES TO SHOW THE UPPER LEVEL LOW SPINNING
SOUTH OF PAM/AQQ.  THE MODELS HAVE TRIED TO OPEN IT UP...SHEAR IT
OUT OR MOVE IT NW OVER THE CONUS EACH NIGHT OF MY PAST FOUR MIDNIGHT
SHIFTS AND IT STILL HASNT DONE ANY OF IT YET. TRUE TO FORM THE
MODELS ARE TRYING TO KILL IT AGAIN TONIGHT...BUT LOOKS LIKE THE LOW
IS GETTING READY TO SHEAR OUT. EXPECT IT WILL MOVE OVER THE
PANHANDLE TODAY AND OPEN UP LIKE ETA AND AVN WANT IT TOO.

AVN SEEMS TO HAVE HAD THE BEST HANDLE ON THE SITUATION SO FAR AND
WILL STICK CLOSER TO FAN POPS THROUGH THE FORECAST PERIOD. PLENTY OF
MOISTURE AVAILABLE FOR CONVECTION AND THE AIR MASS IS CERTAINLY
UNSTABLE IF WERE POPPING NEW CONVECTION AT 2 AM. THE PRECIP WATER
IS RUNNING RIGHT AT 2 INCHES EVEN AS OF LAST NIGHTS SOUNDING...BUT
THAT WAS INTO A TSTM. STILL IF BRUNSWICK/SSI GOT 6.58 INCHES OF RAIN
ON THURSDAY PW HAS TO BE UP THERE I MODIFIED LAST NIGHTS SOUNDING
FOR CURRENT CONDITIONS AND CAME UP WITH A CAPE OF 1400. FOR THE
EXPECTED CONDITIONS THIS AFTERNOON (BASED ON NGM MOS HI TEMP/MIN DEW
POINT) CAME UP WITH A CAPE OF 2290...AN LI OF -6 AND TOTAL TOTALS OF
47...PW OF 2.02 INCHES.  DONT SEE ANY GOOD REASON WHY WE WONT FIRE UP
WIDESPREAD CONVECTION AND HEAVY RAINFALL THIS AFTERNOON.

PRELIM

AMG 84/69/83/68 7443
SSI 81/75/82/68 7433
JAX 86/70/85/69 7443
GNV 88/71/86/68 7453 05

SANDRIK

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

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.