Alert archive / Alabama / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 103, NWS Birmingham, AL

June 21, 1989Colbert County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 21, 1989, 2:23 PM CDT for Colbert County, Alabama. It was in force for 67 min.

The area

The counties it named.

The facts

Issued: Jun 21, 1989, 2:23 PM CDT (19:23 UTC)
Expired: Jun 21, 1989, 3:30 PM CDT
In force: 67 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Colbert County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 7.4 hours before the alert went out and 208 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: 944 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 787 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 43 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, Jun 21, 11:14 AM CDT, 3 hours 9 minutes before

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Special weather statement, Jun 21, 12:41 PM CDT, 1 hour 42 minutes before

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Special weather statement, Jun 21, 1:31 PM CDT, 52 minutes before

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Local storm report, Jun 21, 1:32 PM CDT, 51 minutes before

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Special weather statement, Jun 21, 1:36 PM CDT, 47 minutes before

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Local storm report, Jun 21, 1:54 PM CDT, 29 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
Jun 20, 11:41 PM CDT	Flash Flood Warning	BMX	St. Clair	2 hr
Jun 21, 12:23 AM CDT	Flash Flood Warning	BMX	Shelby	2 hr
Jun 21, 3:33 PM CDT	Severe Thunderstorm Warning	BMX	Perry	42 min
Jun 21, 4:18 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Perry	42 min
Jun 21, 4:35 PM CDT	Severe Thunderstorm Warning	BMX	Madison	55 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1989 Every severe thunderstorm warning in 1989

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.