Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 156, NWS Birmingham, AL

August 29, 1990Marshall County, Morgan County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 29, 1990, 10:50 PM CDT for Marshall County, Morgan County, Alabama. It was in force for 55 min. 1 report 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: Aug 29, 1990, 10:50 PM CDT (03:50 UTC)
Expired: Aug 29, 1990, 11:45 PM CDT
In force: 55 min
Issued by: NWS Birmingham, AL
Area: Whole counties

Counties Marshall County, AL, Morgan County, AL

The radar

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

What was reported inside it

Time	Report	Where	Remark
Aug 29, 11:22 PM CDT	Thunderstorm Wind 0	Marshall, AL

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 00:00Z, 3.8 hours before the alert went out and 177 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: 1492 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 2140 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

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, Aug 29, 9:11 PM CDT, 1 hour 39 minutes before

ALZ004>009-011-013-300330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
910 PM CDT WED AUG 29 1990

        ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 2AM CDT FOR PORTIONS
                    OF NORTH AND EAST CENTRAL ALABAMA...
         ...THUNDERSTORMS MOVE INTO NORTH CENTRAL ALABAMA...

AT 909 PM CDT...WEATHER SERVICE RADAR IN CENTREVILLE INDICATED STRONG
THUNDERSTORMS MOVING INTO NORTH CENTRAL ALABAMA. THE STRONGEST
STORMS WERE MOVING INTO BLOUNT...CULLMAN...AND ETOWAH COUNTIES. MOVEMENT
WAS TO THE SOUTHEAST AT 35 MPH. THESE STORMS ARE CAPABLE OF PRODUCING STRONG
WINDS...FREQUENT LIGHTNING...AND HEAVY RAINFALL.

OTHER SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER EAST CENTRAL
ALABAMA OVER CALHOUN...CLEBURNE...AND RANDOLPH COUNTIES.

PERSONS ARE ADVISED TO STAY INFORMED ON THE LATEST WEATHER DEVELOPMENTS BY
TUNING INTO LOCAL TV...RADIO...OR NOAA WEATHER RADIO FOR THE LATEST

STATEMENTS AND POSSIBLE WARNINGS.

Special weather statement, Aug 29, 10:40 PM CDT, 10 minutes before

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Special weather statement, Aug 29, 10:42 PM CDT, 8 minutes before

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Special weather statement, Aug 29, 10:50 PM CDT, 0 minutes before

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  <meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 7:51 PM CDT	Severe Thunderstorm Warning	BMX	Lawrence, Morgan	69 min
Aug 29, 9:02 PM CDT	Severe Thunderstorm Warning	BMX	Morgan	58 min
Aug 29, 9:18 PM CDT	Severe Thunderstorm Warning	BMX	Limestone	57 min
Aug 29, 10:26 PM CDT	Severe Thunderstorm Warning	BMX	Madison	64 min
Aug 30, 5:13 AM CDT	Severe Thunderstorm Warning	BMX	Hale	47 min
Aug 30, 8:02 AM CDT	Severe Thunderstorm Warning	BMX	Bibb	28 min
Aug 30, 8:15 AM CDT	Severe Thunderstorm Warning	BMX	Chilton, Shelby	60 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1990 Every severe thunderstorm warning in 1990

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.