Alert archive / Alabama / Areal Flood Warnings in 2017

Areal Flood Warning 6, NWS Birmingham, AL

June 18, 2017Autauga County, Lowndes County, Montgomery County, Alabama

NWS Birmingham, AL issued this areal flood warning at Jun 18, 2017, 11:28 AM CDT for Autauga County, Lowndes County, Montgomery 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
Jun 18, 2017, 11:28 AM CDT (16:28 UTC)
Expired
Jun 18, 2017, 2:30 PM CDT
In force
3 hr
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Flood severity
None

Counties Autauga County, AL, Lowndes County, AL, Montgomery County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.5 hours before the alert went out and 101 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 12:00Z on 2017-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 988 joules per kilogram.LCLEL10008507005003002001001 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, Birmingham, AL at 12:00Z on 2017-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 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
988 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 4:59 AM CDTAreal Flood AdvisoryBMXAutauga, Lowndes, Montgomery3 hr
Jun 18, 5:32 AM CDTFlash Flood WarningBMXAutauga, Elmore, Lowndes, Montgomery6 hr
Jun 18, 7:11 AM CDTAreal Flood AdvisoryBMXAutauga, Chilton, Coosa, Elmore3 hr
Jun 18, 7:58 AM CDTAreal Flood AdvisoryBMXElmore, Montgomery3 hr
Jun 18, 8:48 AM CDTFlash Flood WarningBMXElmore, Montgomery3 hr
Jun 18, 9:12 AM CDTAreal Flood AdvisoryBMXLowndes, Montgomery2 hr
Jun 18, 4:53 PM CDTSpecial Weather StatementBMXTuscaloosa37 min
Jun 18, 5:21 PM CDTSpecial Weather StatementBMXLamar54 min
Jun 18, 5:31 PM CDTSpecial Weather StatementBMXJefferson29 min
Jun 18, 5:37 PM CDTSpecial Weather StatementBMXMarion53 min
Jun 18, 5:56 PM CDTSpecial Weather StatementBMXFayette79 min
Jun 18, 6:00 PM CDTSpecial Weather StatementBMXJefferson, Shelby60 min
Jun 18, 6:27 PM CDTSpecial Weather StatementBMXWalker, Winston33 min
Jun 18, 6:58 PM CDTSpecial Weather StatementBMXTuscaloosa62 min

Nearby

Areal Flood Warnings in Alabama, 2017Every areal flood warning in 2017

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.