Alert archive / Florida / Flash Flood Warnings in 1998

Flash Flood Warning 43, NWS Mobile, AL

September 28, 1998Escambia County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Sep 28, 1998, 6:00 AM CDT for Escambia County, Alabama; Escambia County, Okaloosa County, Santa Rosa 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
Sep 28, 1998, 6:00 AM CDT (11:00 UTC)
Expired
Sep 28, 1998, 12:00 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Escambia County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.0 hours before the alert went out and 262 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, Slidell Radar S, LA at 00:00Z on 1998-09-28Temperature 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, Slidell Radar S, LA at 00:00Z on 1998-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 square meters per square second.19395878Sfc1 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
1088 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
240 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 KMOB 281100
FFWMOB
ALC003-053-097-FLC033-091-113-281700-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD/FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
600 AM CDT MON SEP 28 1998

THE NATIONAL WEATHER SERVICE IN MOBILE HAS EXTENDED THE FLOOD
WARNINGS FOR THE FOLLOWING COUNTIES...

* BALDWIN COUNTY IN SOUTHWESTERN ALABAMA
  ESCAMBIA COUNTY IN SOUTHWESTERN ALABAMA
  ESCAMBIA COUNTY IN NORTHWESTERN FLORIDA
  OKALOOSA COUNTY IN NORTHWESTERN FLORIDA
  SANTA ROSA COUNTY IN NORTHWESTERN FLORIDA

A FLASH FLOOD WARNING HAS NOW BEEN ISSUED FOR...

* MOBILE COUNTY IN SOUTHWESTERN ALABAMA

* ALL WARNINGS EFFECTIVE UNTIL 1200 PM CDT TODAY

* AT 545 AM ... NATIONAL WEATHER SERVICE DOPPLER RADAR AT MOBILE
  INDICATED VERY HEAVY RAIN ASSOCIATED WITH HURRICANE GEORGES
  CONTINUES OVER A LARGE PART OF SOUTHWEST ALABAMA AND THE FLORIDA
  PANHANDLE.

* THIS WILL CONTINUE TO CAUSE WIDESPREAD FLOODING OF SMALL STREAMS AND
  LOW LYING...POOR DRAINAGE AREAS IN THE ALL THE AFOREMENTIONED
  COUNTIES.

* THE HEAVIEST RAINFALL SINCE 300 AM HAS OCCURRED OVER EASTERN ESCAMBIA
  COUNTY AL AND MOST OF OKALOOSA COUNTY WHERE LOCALIZED AMOUNTS UP TO
  AROUND 5 INCHES HAVE OCCURRED. AN ADDITIONAL 6 TO 8 INCHES COULD
  OCCUR OVER THOSE SAME AREAS THROUGH LATE MORNING.

AS GEORGES MOVES VERY SLOWLY ACROSS THE REGION OVER THE NEXT
SEVERAL DAYS...AN ADDITIONAL 15 TO 25 INCHES OF RAINFALL COULD
OCCUR. THIS WILL POTENTIALLY PRODUCE EXTENSIVE FLOODING.


DURING HEAVY RAINS...KEEP CHILDREN AWAY FROM STORM DRAINS...
WATER CATCHMENTS...AND WATERWAYS. SHALLOW...GENTLY FLOWING WATER
CAN BECOME A RAGING TORRENT IN A MATTER OF MINUTES.

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.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 27, 11:51 PM CDTFlash Flood WarningMOBEscambia69 min
Sep 28, 1:02 AM CDTFlash Flood WarningMOBBaldwin, Escambia7 hr
Sep 28, 6:00 AM CDTFlash Flood WarningMOBBaldwin, Mobile6 hr
Sep 28, 7:48 AM CDTTornado WarningMOBCovington42 min
Sep 28, 8:41 AM CDTTornado WarningMOBCovington79 min
Sep 28, 10:41 AM CDTTornado WarningMOBBaldwin79 min
Sep 28, 11:15 AM CDTFlash Flood WarningMOBButler, Covington6 hr
Sep 28, 11:54 AM CDTFlash Flood WarningMOBEscambia8 hr
Sep 28, 11:54 AM CDTFlash Flood WarningMOBButler, Covington, Crenshaw8 hr
Sep 28, 11:54 AM CDTFlash Flood WarningMOBBaldwin, Mobile, Washington8 hr
Sep 28, 2:01 PM CDTTornado WarningMOBCrenshaw44 min
Sep 27, 8:26 PM CDTTornado WarningMOBEscambia, Santa Rosa49 min
Sep 27, 9:43 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa3 hr
Sep 28, 1:02 AM CDTFlash Flood WarningMOBSanta Rosa7 hr
Sep 28, 3:25 AM CDTFlash Flood WarningMOBOkaloosa3 hr
Sep 28, 5:06 AM CDTTornado WarningMOBOkaloosa69 min

Nearby

Flash Flood Warnings in Florida, 1998Flash Flood Warnings in Alabama, 1998Every flash flood warning in 1998

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.