Alert archive / Alabama / Flash Flood Warnings in 1990

Flash Flood Warning 1, NWS Mobile, AL

February 16, 1990Tallapoosa County, Alabama

NWS Mobile, AL issued this flash flood warning at Feb 16, 1990, 7:52 AM CST for Tallapoosa County, Alabama. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Feb 16, 1990, 7:52 AM CST (13:52 UTC)
Expired
Feb 16, 1990, 9:00 AM CST
In force
68 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Tallapoosa County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 1.9 hours before the alert went out and 131 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, Centreville/Bibb, AL at 12:00Z on 1990-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 837 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Centreville/Bibb, AL at 12:00Z on 1990-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 233 square meters per square second.1939587897Sfc1 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
837 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
556 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
233 m²/s²
0-3 km storm-relative helicity
276 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMGM 161356
FFWMGM
ALC123-161500-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
752 AM CST FRI FEB 16 1990
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  900 AM CST
AND A FLASH FLOOD WARNING EFFECTIVE UNTIL  900 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH ALABAMA
          ...TALLAPOOSA
 
A SEVERE THUNDERSTORM WAS INDICATED A FEW MILES NORTHWEST OF ALEXANDER
CITY MOVING EAST NORTHEAST AT 40 MPH..
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 16, 7:04 AM CSTSevere Thunderstorm WarningMOBCoosa56 min
Feb 16, 7:16 AM CSTSevere Thunderstorm WarningMOBAutauga, Elmore59 min
Feb 16, 7:31 AM CSTSevere Thunderstorm WarningMOBWilcox59 min
Feb 16, 7:52 AM CSTSevere Thunderstorm WarningMOBTallapoosa68 min
Feb 16, 8:10 AM CSTSevere Thunderstorm WarningMOBAutauga, Elmore, Montgomery65 min
Feb 16, 9:00 AM CSTSevere Thunderstorm WarningMOBChambers, Tallapoosa60 min
Feb 16, 9:00 AM CSTSevere Thunderstorm WarningMOBButler60 min
Feb 16, 9:12 AM CSTSevere Thunderstorm WarningMOBCrenshaw, Pike63 min
Feb 16, 9:12 AM CSTSevere Thunderstorm WarningMOBBullock, Macon63 min
Feb 16, 9:12 AM CSTSevere Thunderstorm WarningMOBLee63 min
Feb 16, 9:13 AM CSTSevere Thunderstorm WarningMOBConecuh62 min
Feb 16, 9:31 AM CSTSevere Thunderstorm WarningMOBBaldwin29 min
Feb 16, 9:53 AM CSTSevere Thunderstorm WarningMOBCoffee, Covington67 min
Feb 16, 9:59 AM CSTSevere Thunderstorm WarningMOBBaldwin61 min
Feb 16, 10:12 AM CSTSevere Thunderstorm WarningMOBBarbour, Dale63 min
Feb 16, 10:55 AM CSTTornado WarningMOBDale50 min
Feb 16, 11:13 AM CSTSevere Thunderstorm WarningMOBHenry, Houston62 min
Feb 16, 11:13 AM CSTSevere Thunderstorm WarningMOBGeneva62 min

Nearby

Flash Flood Warnings in Alabama, 1990Every flash flood warning in 1990

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.