Alert archive / Alabama / Flash Flood Warnings in 2010

Flash Flood Warning 23, NWS Huntsville, AL

June 1, 2010Limestone County, Madison County, Alabama

NWS Huntsville, AL issued this flash flood warning at Jun 1, 2010, 4:45 PM CDT for Limestone County, Madison County, Alabama. It was in force for 103 min. 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 1, 2010, 4:45 PM CDT (21:45 UTC)
Expired
Jun 1, 2010, 6:28 PM CDT
In force
103 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Flood severity
None

Counties Limestone County, AL, Madison County, AL

The radar

The Northeast Alabama radar (KHTX), 64 km from the middle of the area, began a volume at 21:48 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

Birmingham, AL (KBMX), launched 12:00Z, 9.8 hours before the alert went out and 179 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 2010-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 809 joules per kilogram.LCLLFCEL10008507005003002001001 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 2010-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
809 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
493 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 11:01 AM CDTSpecial Weather StatementHUNMorgan44 min
Jun 1, 3:31 PM CDTSpecial Weather StatementHUNFranklin59 min
Jun 1, 4:11 PM CDTSpecial Weather StatementHUNMadison49 min
Jun 1, 4:40 PM CDTSevere Thunderstorm WarningHUNLimestone39 min
Jun 1, 5:17 PM CDTSpecial Weather StatementHUNMorgan43 min
Jun 1, 1:48 PM CDTSpecial Weather StatementHUNMoore27 min
Jun 1, 2:13 PM CDTSpecial Weather StatementHUNFranklin, Moore32 min
Jun 1, 2:41 PM CDTSpecial Weather StatementHUNFranklin34 min

Nearby

Flash Flood Warnings in Alabama, 2010Every flash flood warning in 2010

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.