Alert archive / Alabama / Flash Flood Warnings in 1998

Flash Flood Warning 58, NWS Birmingham, AL

July 27, 1998Cleburne County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jul 27, 1998, 10:33 AM CDT for Cleburne County, Alabama. It was in force for 3 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: Jul 27, 1998, 10:33 AM CDT (15:33 UTC)
Expired: Jul 27, 1998, 1:35 PM CDT
In force: 3 hr
Issued by: NWS Birmingham, AL
Area: Whole counties

County Cleburne County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 3.6 hours before the alert went out and 100 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: 494 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1096 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 271534
FFWBHM
ALC029-271835-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1033 AM CDT MON JUL 27 1998

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLEBURNE COUNTY... IN EAST CENTRAL ALABAMA

* UNTIL 135 PM CDT

* AT 1030 AM CDT...RADAR SHOWED A LARGE AREA OF RAIN WITH EMBEDDED
THUNDERSTORMS OVER MOST OF CLEBURNE COUNTY...MOVING TOWARD THE EAST AT
AROUND 20 MPH.  ADDITIONAL THUNDERSTORMS WERE MOVING OUT OF ETOWAH
COUNTY INTO CLEBURNE COUNTY.

RADAR HAS ESTIMATED THAT AS MUCH AS TWO AND A HALF INCHES OF RAINFALL
HAS OCCURRED OVER CENTRAL CLEBURNE COUNTY SINCE 9 AM.  THIS HAS
RESULTED IN SOME FLOODING OF ROADnWAYS IN SOME OF THE LOW-LYING AREAS
OF THE COUNTY.  ADDITIONAL RUNOFF FROM THE RAINS MAY AGGRAVATE THIS
FLOODING SITUATION.

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

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 27, 9:45 AM CDT, 48 minutes before

ALZ001>050-GAZ089-090-102-120-090225-

HAZARDOUS WEATHER OUTLOOK
FOR NORTH/CENTRAL AL AND WEST CENTRAL GA
NATIONAL WEATHER SERVICE BIRMINGHAM AL
945 AM CDT MON JUL 27 1998

A FLASH FLOOD WATCH IS IN EFFECT ACROSS THE NORTHERN QUARTER OF
ALABAMA TODAY.  A VERY MOIST...AND UNSTABLE AIR MASS WAS POSITIONED
OVER THE AREA...AND A LARGE AREA OF RAIN AND EMBEDDED THUNDERSTORMS
WILL MOVE SOUTHEAST ACROSS THE TENNESSEE VALLEY TODAY.  HEAVY
RAINFALL...AS MUCH AS 2 TO 3 INCHES...IS EXPECTED OVER PARTS OF
NORTH ALABAMA TODAY.

SCATTERED THUNDERSTORMS HAVE ALREADY DEVELOPED OVER PARTS OF
NORTHEAST ALABAMA THIS MORNING...AND MORE SCATTERED TO NUMEROUS
SHOWERS AND THUNDERSTORMS CAN BE EXPECTED OVER CENTRAL ALABAMA AND
WEST-CENTRAL GEORGIA THIS AFTERNOON AND INTO THE EARLY EVENING
HOURS.

THE GREATEST THREAT FROM THUNDERSTORMS TODAY WILL BE IN THE FORM OF
HEAVY RAIN AND LIGHTNING.  THUNDERSTORMS ARE EXPECTED TO REMAIN
BELOW SEVERE LIMITS.  ACTIVATION OF STORM SPOTTERS AND EMERGENCY
MANAGEMENT PERSONNEL IS NOT ANTICIPATED.

FOR THE HAZARDOUS WEATHER OUTLOOK FOR SOUTHWEST ALABAMA...SEE
PRODUCT BHMSPSMOB.  FOR SOUTHEAST ALABAMA...LOOK AT MIASPSTLH.  FOR
MORE WEATHER INFORMATION VISIT OUR INTERNET SITE ON THE WORLD WIDE
WEB AT HTTP://WWW.ACESAG.AUBURN.EDU/DEPARTMENT/NWS/

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 3:47 PM CDT	Severe Thunderstorm Warning	BMX	Montgomery	48 min

Nearby

Flash Flood Warnings in Alabama, 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.