Alert archive / Alabama / Areal Flood Warnings in 2012

Areal Flood Warning 10, NWS Birmingham, AL

September 4, 20124 counties in Alabama

NWS Birmingham, AL issued this areal flood warning at Sep 4, 2012, 9:28 AM CDT for 4 counties in 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: Sep 4, 2012, 9:28 AM CDT (14:28 UTC)
Expired: Sep 4, 2012, 12:30 PM CDT
In force: 3 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

Counties Bibb County, AL, Chilton County, AL, Hale County, AL, Perry County, AL

The radar

The Birmingham radar (KBMX), 56 km from the middle of the area, began a volume at 14:30 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, 2.5 hours before the alert went out and 56 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: 1659 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 531 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Birmingham, AL wrote its last area forecast discussion before this areal flood warning went out at Sep 4, 7:41 AM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Sep 4, 7:41 AM CDT, 1 hour 47 minutes before

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Hazardous weather outlook, Sep 4, 7:18 AM CDT, 2 hours 10 minutes before

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In the hours before

Local storm report, Sep 4, 7:36 AM CDT, 1 hour 52 minutes before

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Local storm report, Sep 4, 7:59 AM CDT, 1 hour 29 minutes before

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Local storm report, Sep 4, 8:10 AM CDT, 1 hour 18 minutes before

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Local storm report, Sep 4, 8:21 AM CDT, 1 hour 7 minutes before

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Local storm report, Sep 4, 8:23 AM CDT, 1 hour 5 minutes before

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Local storm report, Sep 4, 8:27 AM CDT, 1 hour 1 minute before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 7:01 PM CDT	Special Weather Statement	BMX	Pike	59 min
Sep 3, 7:06 PM CDT	Special Weather Statement	BMX	Perry	39 min
Sep 3, 7:20 PM CDT	Areal Flood Advisory	BMX	Jefferson	115 min
Sep 3, 7:23 PM CDT	Special Weather Statement	BMX	Pickens	52 min
Sep 3, 7:24 PM CDT	Special Weather Statement	BMX	Tuscaloosa	51 min
Sep 3, 7:38 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	52 min
Sep 3, 8:01 PM CDT	Special Weather Statement	BMX	Hale	44 min
Sep 3, 8:03 PM CDT	Special Weather Statement	BMX	Barbour	42 min
Sep 3, 8:09 PM CDT	Special Weather Statement	BMX	Walker	36 min
Sep 3, 8:24 PM CDT	Special Weather Statement	BMX	Greene	66 min
Sep 3, 8:30 PM CDT	Areal Flood Advisory	BMX	Greene, Pickens	3 hr
Sep 3, 8:36 PM CDT	Special Weather Statement	BMX	Pickens	54 min
Sep 3, 8:59 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	31 min
Sep 3, 9:03 PM CDT	Severe Thunderstorm Warning	BMX	Greene	42 min
Sep 3, 9:15 PM CDT	Areal Flood Warning	BMX	Hale, Perry	3 hr
Sep 3, 9:18 PM CDT	Flash Flood Warning	BMX	Pickens	3 hr
Sep 3, 9:30 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	60 min
Sep 3, 9:49 PM CDT	Special Weather Statement	BMX	Greene	41 min
Sep 3, 9:51 PM CDT	Special Weather Statement	BMX	Cherokee	39 min
Sep 3, 9:56 PM CDT	Flash Flood Warning	BMX	Tuscaloosa	3 hr
Sep 3, 10:40 PM CDT	Special Weather Statement	BMX	Greene	65 min
Sep 3, 10:52 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Sumter	53 min
Sep 3, 10:58 PM CDT	Tornado Warning	BMX	Greene, Sumter	11 min
Sep 3, 11:51 PM CDT	Special Weather Statement	BMX	Sumter	39 min
Sep 4, 4:36 AM CDT	Special Weather Statement	BMX	Lowndes	24 min
Sep 4, 6:08 AM CDT	Areal Flood Advisory	BMX	Autauga, Lowndes	3 hr
Sep 4, 6:19 AM CDT	Flash Flood Warning	BMX	Dallas, Lowndes	6 hr
Sep 4, 6:30 AM CDT	Flash Flood Warning	BMX	Bibb, Hale, Perry, Tuscaloosa	3 hr
Sep 4, 6:50 AM CDT	Areal Flood Advisory	BMX	Autauga, Chilton, Dallas, Perry	3 hr
Sep 4, 7:03 AM CDT	Areal Flood Advisory	BMX	Tuscaloosa	3 hr
Sep 4, 7:22 AM CDT	Flash Flood Warning	BMX	Autauga, Dallas, Lowndes, Perry	3 hr
Sep 4, 9:02 AM CDT	Flash Flood Warning	BMX	Dallas, Perry	3 hr
Sep 4, 9:32 AM CDT	Special Weather Statement	BMX	Dallas	43 min
Sep 4, 10:28 AM CDT	Flash Flood Warning Emergency	BMX	Autauga, Dallas, Lowndes, Perry	3 hr
Sep 4, 11:57 AM CDT	Areal Flood Warning	BMX	Dallas	3 hr
Sep 4, 12:27 PM CDT	Areal Flood Warning	BMX	Dallas, Lowndes	3 hr
Sep 4, 3:14 PM CDT	Special Weather Statement	BMX	Greene	61 min
Sep 4, 3:51 PM CDT	Areal Flood Advisory	BMX	Greene, Hale	3 hr
Sep 4, 4:42 PM CDT	Areal Flood Advisory	BMX	Marengo	3 hr
Sep 4, 4:53 PM CDT	Special Weather Statement	BMX	Marengo	52 min
Sep 4, 5:41 PM CDT	Special Weather Statement	BMX	Marengo	49 min

Nearby

Areal Flood Warnings in Alabama, 2012 Every areal flood warning in 2012

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.