Alert archive / Alabama / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 34, NWS Birmingham, AL

April 9, 1991Fayette County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 9, 1991, 2:25 PM CDT for Fayette County, Alabama. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Apr 9, 1991, 2:25 PM CDT (19:25 UTC)
Expired: Apr 9, 1991, 3:30 PM CDT
In force: 65 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Fayette County, AL

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 7.4 hours before the alert went out and 268 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: 2634 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Apr 9, 11:53 AM CDT, 2 hours 32 minutes before

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Special weather statement, Apr 9, 1:18 PM CDT, 1 hour 7 minutes before

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Special weather statement, Apr 9, 2:05 PM CDT, 20 minutes before

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Special weather statement, Apr 9, 2:18 PM CDT, 7 minutes before

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Special weather statement, Apr 9, 2:21 PM CDT, 4 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
Apr 9, 12:08 PM CDT	Severe Thunderstorm Warning	BMX	Colbert, Franklin, Lauderdale	67 min
Apr 9, 1:50 PM CDT	Severe Thunderstorm Warning	BMX	Lawrence, Limestone, Morgan	55 min
Apr 9, 2:08 PM CDT	Severe Thunderstorm Warning	BMX	Madison, Morgan	44 min
Apr 9, 2:08 PM CDT	Severe Thunderstorm Warning	BMX	Lawrence, Limestone	23 min
Apr 9, 2:21 PM CDT	Severe Thunderstorm Warning	BMX	Hale, Tuscaloosa	69 min
Apr 9, 2:31 PM CDT	Severe Thunderstorm Warning	BMX	Jackson, Madison, Marshall, Morgan	59 min
Apr 9, 2:56 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	64 min
Apr 9, 4:31 PM CDT	Severe Thunderstorm Warning	BMX	Etowah	44 min
Apr 9, 4:44 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	61 min
Apr 9, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	54 min
Apr 9, 4:54 PM CDT	Severe Thunderstorm Warning	BMX	Fayette	51 min
Apr 9, 5:42 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa, Walker	48 min
Apr 9, 6:43 PM CDT	Severe Thunderstorm Warning	BMX	Limestone, Morgan	37 min
Apr 9, 6:47 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	43 min
Apr 9, 6:55 PM CDT	Severe Thunderstorm Warning	BMX	Shelby	50 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1991 Every severe thunderstorm warning in 1991

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.