Alert archive / Florida / Flash Flood Warnings in 1998

Flash Flood Warning 40, NWS Mobile, AL

September 28, 1998Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Sep 28, 1998, 1:02 AM CDT for Santa Rosa County, Florida. It was in force for 7 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, 1:02 AM CDT (06:02 UTC)
Expired
Sep 28, 1998, 7:45 AM CDT
In force
7 hr
Issued by
NWS Mobile, AL
Area
Whole counties

County Santa Rosa County, FL

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.0 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 280602
FFWMOB
ALC003-053-FLC033-113-281245-

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

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

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

* IN ADDITION...A FLOOD WARNING IS NOW ISSUED FOR...

 BALDWIN COUNTY IN SOUTHWESTERN ALABAMA

* UNTIL 745 AM CDT

* AT 1245 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR AT MOBILE
  INDICATED SPIRAL BANDS ASSOCIATED WITH HURRICANE GEORGES
  CONTINUING TO MOVE ACROSS MOST OF ESCAMBIA AND SANTA ROSA
  COUNTIES OF FLORIDA...WESTERN AND CENTRAL ESCAMBIA COUNTY
  ALABAMA...AND NOW MOVING INTO NORTHERN BALDWIN COUNTY
  OF ALABAMA.

* VERY HEAVY RAINFALL...WITH HOURLY RATES APPROACHING 3 INCHES IN
  LOCALIZED AREAS...WILL CONTINUE. AS A RESULT FLOODING OF SMALL
  STREAMS AND POOR DRAINAGE AREAS...AS WELL AS STREET FLOODING WILL
  CONTINUE. MAJOR FLOODING HAS BEEN OCCURRING IN ESCAMBIA COUNTY
  FLORIDA...AND THE MOST SERIOUS ADDITIONAL FLOODING POTENTIAL OVER
  THE NEXT SEVERAL HOURS WILL BE OVER NORTHERN SANTA ROSA COUNTY
  FLORIDA AND WESTERN ESCAMBIA COUNTY ALABAMA.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

The office that day

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

IssuedProductOfficeCountiesLasted
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 WarningMOBEscambia7 hr
Sep 28, 3:25 AM CDTFlash Flood WarningMOBOkaloosa3 hr
Sep 28, 5:06 AM CDTTornado WarningMOBOkaloosa69 min
Sep 28, 6:00 AM CDTFlash Flood WarningMOBEscambia, Okaloosa, Santa Rosa6 hr
Sep 28, 11:54 AM CDTFlash Flood WarningMOBEscambia, Okaloosa, Santa Rosa8 hr

Nearby

Flash Flood Warnings in Florida, 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.