Alert archive / Alabama / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 306, NWS Birmingham, AL

October 25, 2010Clay County, Cleburne County, Randolph County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Oct 25, 2010, 5:28 AM CDT for Clay County, Cleburne County, Randolph County, Alabama. It was in force for 47 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: Oct 25, 2010, 5:28 AM CDT (10:28 UTC)
Expired: Oct 25, 2010, 6:15 AM CDT
In force: 47 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Clay County, AL, Cleburne County, AL, Randolph County, AL

The radar

The Atlanta radar (KFFC), 97 km from the middle of the area, began a volume at 10:24 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 25, 1:33 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 10.5 hours before the alert went out and 103 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: 16 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1618 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 154 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 severe thunderstorm 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 severe thunderstorm warning went out at Oct 25, 4:26 AM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Oct 25, 4:26 AM CDT, 1 hour 2 minutes before

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Hazardous weather outlook, Oct 25, 12:45 AM CDT, 4 hours 43 minutes before

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In the hours before

Local storm report, Oct 24, 11:50 PM CDT, 5 hours 38 minutes before

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Local storm report, Oct 24, 11:52 PM CDT, 5 hours 36 minutes before

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Local storm report, Oct 24, 11:53 PM CDT, 5 hours 35 minutes before

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Local storm report, Oct 25, 2:50 AM CDT, 2 hours 38 minutes before

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Local storm report, Oct 25, 2:58 AM CDT, 2 hours 30 minutes before

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Local storm report, Oct 25, 4:56 AM CDT, 32 minutes 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
Oct 24, 7:19 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby	41 min
Oct 24, 7:27 PM CDT	Severe Thunderstorm Warning	BMX	Marengo	48 min
Oct 24, 7:52 PM CDT	Severe Thunderstorm Warning	BMX	Hale, Marengo, Perry	38 min
Oct 24, 7:53 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Shelby	52 min
Oct 24, 8:38 PM CDT	Severe Thunderstorm Warning	BMX	Marengo	38 min
Oct 24, 8:43 PM CDT	Severe Thunderstorm Warning	BMX	Blount	36 min
Oct 24, 8:47 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Jefferson, Tuscaloosa	43 min
Oct 24, 9:45 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa, Shelby, Talladega	30 min
Oct 24, 10:23 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	52 min
Oct 24, 10:36 PM CDT	Severe Thunderstorm Warning	BMX	Blount	24 min
Oct 24, 10:37 PM CDT	Severe Thunderstorm Warning	BMX	Marion	38 min
Oct 24, 10:55 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	29 min
Oct 24, 10:59 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	46 min
Oct 25, 1:20 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	25 min
Oct 25, 1:34 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Greene, Lamar, Pickens	41 min
Oct 25, 1:44 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	31 min
Oct 25, 2:09 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	51 min
Oct 25, 2:14 AM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	46 min
Oct 25, 3:00 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Blount, Hale, Jefferson, Shelby, Tuscaloosa and 1 more	45 min
Oct 25, 3:04 AM CDT	Severe Thunderstorm Warning	BMX	Blount	41 min
Oct 25, 3:23 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Dallas, Hale, Marengo, Perry	52 min
Oct 25, 3:42 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Blount, Chilton, Etowah, Jefferson, St. Clair and 2 more	48 min
Oct 25, 4:08 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Bibb, Chilton, Dallas, Perry	52 min
Oct 25, 4:15 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Calhoun, Cherokee, Chilton, Etowah, St. Clair and 2 more	45 min
Oct 25, 4:42 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Clay, Cleburne, Randolph, Talladega	48 min
Oct 25, 6:39 AM CDT	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	51 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2010 Every severe thunderstorm 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.