Alert archive / Florida / Flash Flood Warnings in 1998

Flash Flood Warning 62, NWS Mobile, AL

September 29, 1998Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Sep 29, 1998, 11:59 AM CDT for Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 8 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 29, 1998, 11:59 AM CDT (16:59 UTC)
Expired: Sep 29, 1998, 7:45 PM CDT
In force: 8 hr
Issued by: NWS Mobile, AL
Area: Whole counties

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

The radar

The Eglin Afb radar (KEVX), 102 km from the middle of the area, began a volume at 17:00 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

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 5.0 hours before the alert went out and 50 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: 641 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 561 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMOB 291658
FFWMOB
ALC003-013-035-039-041-053-097-129-FLC033-091-113-300045-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1159 AM CDT TUE SEP 29 1998

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A FLOOD WARNING FOR

* CONECUH COUNTY IN SOUTHWEST ALABAMA

AND EXTENDED THE FLOOD WARNINGS FOR THE FOLLOWING COUNTIES IN
SOUTHWEST ALABAMA...

  BALDWIN...BUTLER...COVINGTON...CRENSHAW...ESCAMBIA...MOBILE AND
  WASHINGTON

AND IN NORTHWEST FLORIDA...
  ESCAMBIA...OKALOOSA AND SANTA ROSA


* UNTIL 745 PM CDT

* AT 1155 AM CDT... EMA OFFICIALS AND AREA LAW ENFORCEMENT INDICATED
  THAT FLOODING HAS DEVELOPED IN CONECUH COUNTY AND THAT HIGH WATER
  LEVELS CONTINUE TO CAUSE FLOODING PROBLEMS IN THE REMAINING COUNTIES
  LISTED ABOVE. PEOPLE LIVING IN AND NEAR FLOOD PRONE AREAS SHOULD BE
  PREPARED TO MOVE TO HIGHER GROUND SHOULD FLOOD WATERS THREATEN.

* WIDESPREAD FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS WILL
  CONTINUE IN THE COUNTIES LISTED ABOVE.

MANY COUNTY AND SECONDARY ROADS WILL REMAIN CLOSED DUE TO HIGH WATER
THROUGH THE DAY.  6 TO 8 INCHES OF RAIN HAVE FALLEN ACROSS CONECUH
COUNTY DURING THE LAST 24 HOURS AND IS CAUSING CREEKS AND STREAMS TO
SPREAD BEYOND THEIR BANKS.  ADDITIONAL RAINFALL OF 1- 2INCHES WILL BE
POSSIBLE OVER BUTLER...CRENSHAW AND COVINGTON COUNTIES UNTIL THE
RAINS ASSOCIATED WITH THE REMNANTS OF GEORGES MOVE EAST OUT OF THE
AREA. DRAINAGE FROM UPSTREAM RIVERS AND STREAMS WILL AGGRAVATE
FLOODING PROBLEMS IN THE COUNTIES LISTED ABOVE AS WELL.

MOTORISTS SHOULD NOT DRIVE AROUND ROAD BARRIERS OR ATTEMPT TO DRIVE
THROUGH WATER COVERED ROADWAYS.  NEARLY HALF OF ALL FLASH FLOOD DEATHS
ARE AUTO RELATED.  TWO FEET OF WATER WILL CARRY AWAY MOST AUTOMOBILES.
IN YOUR AUTOMOBILE...LOOK OUT FOR FLOODING IN HIGHWAY BRIDGES AND LOW
LYING AREAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 28, 7:59 PM CDT	Flash Flood Warning	MOB	Escambia, Okaloosa, Santa Rosa	8 hr
Sep 28, 9:58 PM CDT	Tornado Warning	MOB	Okaloosa	77 min
Sep 29, 3:08 AM CDT	Tornado Warning	MOB	Santa Rosa	37 min
Sep 29, 4:02 AM CDT	Flash Flood Warning	MOB	Escambia, Santa Rosa	7 hr
Sep 29, 4:02 AM CDT	Flash Flood Warning	MOB	Okaloosa	7 hr

Nearby

Flash Flood Warnings in Florida, 1998 Every 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; radar from the NEXRAD Level II archive.