Alert archive / Alabama / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 289, NWS Birmingham, AL

May 23, 1999Coosa County, Elmore County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 23, 1999, 1:59 PM CDT for Coosa County, Elmore County, Alabama. It was in force for 61 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 23, 1999, 1:59 PM CDT (18:59 UTC)
Expired: May 23, 1999, 3:00 PM CDT
In force: 61 min
Issued by: NWS Birmingham, AL
Area: Whole counties

Counties Coosa County, AL, Elmore County, AL

What was reported inside it

Time	Report	Where	Remark
May 23, 2:25 PM CDT	Hail 0.75	Riddle, AL	Dime size hail was reported in northwest Elmore County near Lake Jordan.
May 23, 2:30 PM CDT	Thunderstorm Wind 50	Deatsville, AL	Trees and power lines were knocked down on CR 143 near Deatsville.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 23, 1:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.0 hours before the alert went out and 172 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: 299 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1083 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: -42 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.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 12:42 PM CDT	Severe Thunderstorm Warning	BMX	Dallas	48 min
May 23, 1:09 PM CDT	Severe Thunderstorm Warning	BMX	Jackson	21 min
May 23, 1:16 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Lowndes	64 min
May 23, 1:42 PM CDT	Severe Thunderstorm Warning	BMX	Dallas	48 min
May 23, 2:16 PM CDT	Severe Thunderstorm Warning	BMX	Lowndes	64 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.