Alert archive / Alabama / Flash Flood Warnings in 1998

Flash Flood Warning 65, NWS Birmingham, AL

September 29, 1998Dallas County, Lowndes County, Alabama

NWS Birmingham, AL issued this flash flood warning at Sep 29, 1998, 6:20 AM CDT for Dallas County, Lowndes County, Alabama. It was in force for 4 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, 6:20 AM CDT (11:20 UTC)
Expired
Sep 29, 1998, 10:00 AM CDT
In force
4 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Dallas County, AL, Lowndes County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 11.3 hours before the alert went out and 105 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, Birmingham, AL at 00:00Z on 1998-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 189 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 1998-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 square meters per square second.193958Sfc1 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
189 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
715 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
175 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 KBHM 291120
FFWBHM
ALC047-085-291500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
620 AM CDT TUE SEP 29 1998

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DALLAS COUNTY... IN CENTRAL ALABAMA
  LOWNDES COUNTY... IN CENTRAL ALABAMA

* UNTIL 1000 AM CDT

* AT 615AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED
  WIDESPREAD...AND SOMETIMES HEAVY...RAIN CONTINUING TO SPREAD
  NORTHWEST ACROSS LOWNDES AND DALLAS COUNTIES.

* RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE THAT RAIN TOTALS IN
  EXCESS OF 6 INCHES HAVE OCCURRED OVER PORTIONS OF DALLAS AND LOWNDES
  COUNTIES DURING THE PAST 24 HOURS.  ADDITIONAL RAIN WILL SPREAD
  OVER THESE AREAS THE NEXT SEVERAL HOURS...AND WITH THE GROUND
  SATURATED...RUNOFF WILL LIKELY PRODUCE FLASH FLOODING... ESPECIALLY
  OF SMALL STREAMS AND CREEKS AND LOW LYING FLOOD PRONE AREAS.

  DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

  AREA RESIDENTS SHOULD MONITOR WEATHER CONDITIONS... AND BE PREPARED
  TO MOVE TO HIGHER GROUND... SHOULD FLOOD WATERS THREATEN. IF FLASH
  FLOODING IS OBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE
  FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER
  BEGINS RISING.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 7:15 PM CDTTornado WarningBMXLee, Macon35 min
Sep 28, 7:48 PM CDTTornado WarningBMXLee17 min
Sep 28, 8:03 PM CDTTornado WarningBMXTallapoosa27 min
Sep 29, 4:02 AM CDTTornado WarningBMXRussell48 min
Sep 29, 9:50 AM CDTFlash Flood WarningBMXDallas, Lowndes, Montgomery6 hr
Sep 29, 9:50 AM CDTFlash Flood WarningBMXBarbour, Bullock, Pike6 hr
Sep 29, 12:06 PM CDTTornado WarningBMXMacon34 min
Sep 29, 12:42 PM CDTTornado WarningBMXRussell38 min
Sep 29, 12:56 PM CDTTornado WarningBMXMacon34 min
Sep 29, 1:21 PM CDTTornado WarningBMXRussell34 min
Sep 29, 1:33 PM CDTTornado WarningBMXLee32 min

Nearby

Flash 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.