Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 106, NWS Birmingham, AL

June 21, 1990Franklin County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 21, 1990, 5:45 PM CDT for Franklin County, Alabama. It was in force for 60 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
Jun 21, 1990, 5:45 PM CDT (22:45 UTC)
Expired
Jun 21, 1990, 6:45 PM CDT
In force
60 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Franklin 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

TimeReportWhereRemark
Jun 21, 5:48 PM CDTHail 1Franklin, 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 12:00Z, 10.8 hours before the alert went out and 182 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-pSkew-T log-p diagram, Centreville/Bibb, AL at 12:00Z on 1990-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1904 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Centreville/Bibb, AL at 12:00Z on 1990-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1904 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
1025 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
-10 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

Local storm report, Jun 21, 12:20 PM CDT, 5 hours 25 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1218 PM CDT THU JUN 21 1989

1030 AM...NUMEROUS POWER OUTAGES IN THE TOWNS OF BLOUNTSVILLE AND
          BROOKSVILLE (NORTH BLOUNTY COUNTY).
1035 AM...NUMEROUS FIRES CAUSED BY LIGHTNING REPORTED NEAR THE TOWN
          OF SNEAD (NORTH BLOUNT COUNTY).
1035 AM...HOUSE DETROYED BY FIRE CAUSED BY LIGHTNING NEAR TOWN OF
          SNEAD.
1058 AM...STRONG WINDS REPORTED NORTH OF BLOUNTSVILLE IN NORTHERN
x          BLOUNT COUNTY BY INDIVIDUAL DRIVING INTO TOWN...NO
          ESTIMATED WINDS GIVEN.
Special weather statement, Jun 21, 2:50 PM CDT, 2 hours 55 minutes before
ALZ010-012-014-017-018-212100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MONTGOMERY AL
250PM CDT THU JUN 21 1990

...SCATTERED STRONG THUNDERSTORMS OVER PARTS OF SOUTH CENTRAL ALABAMA...
WEATHER RADAR AT MONTGOMERY SHOWED THUNDERSTORMS...A FEW STRONG...
SCATTERED FROM NORTHERN TALLAPOOSA COUNTY THROUGH COOSA AND AUTAUGA
COUNTIES WESTWARD INTO NORTHERN DALLAS COUNTY. THE STORMS WERE MOVING
VERY LITTLE.

THESE STORMS MAY PRODUCE STRONG GUSTY WINDS...SMALL HAIL AND VERY
INTENSE LIGHTNING.

DUE TO THE INTENSE HEATING OF THIS AFTERNOON...STRONG STORMS MAY
FORM QUICKLY. PERSONS IN SOUTH ALABAMA SHOULD BE ON THE ALERT FOR
RAPIDLY CHANGING WEATHER CONDITIONS.
Local storm report, Jun 21, 3:09 PM CDT, 2 hours 36 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
310 PM CDT THU JUN 21 1989

130 PM    MARBLE SIZE HAIL AT LEEDS ON THE SHELBY COUNTY - ST. CLAIR
          COUNTY LINE.  REPORTED BY BIRMINGHAM RADIO CLUB (BRC)
145 PM    STREET FLOODING ON 19TH AVE IN HOMEWOOD...JEFFERSON COUNTY.
          WATER HALF-WAY UP THE DOOR OF AN ISUZU TROOPER. (BRC)
145 PM    WIND GUST TO 39 MPH AT NWS FORECAST OFFICE ON WEST OXMOOR
          IN BIMINGHAM.
155 PM    WINDS ESTIMATED 55 TO 60 MPH NEARLY TURNED OVER 18 WHEELER
          ON I-65 SOUTH NEAR 8 AVE SOUTH IN BIRMINGHAM. (BRC)
158 PM    WIND GUST TO 56 MPH AT CHANNNEL 6 ON RED MOUNTAIN IN BHM.
2-215 PM  LOCAL FLOODING AT BROADWAY AND GREEN SPRINGS IN HOMEWOOD.
          6 INCH DIAMETER OAK TREE BLOWN DOWN IN 1200 BLOCJ OF 31ST
          STREET SOUTH IN BIRMINGHAM. (BRC)
215 PM    WIND GUST TO 58 MPH AT BIRMINGHAM AIRPORT.
220 PM    DIME-SIZE HAIL IN INVERNESS IN NORTHERN SHELBY COUNTY. (BRC)
133 PM-
  230 PM  RAINFALL AT NWS 1.40 INCHES IN LESS THAN ONE HOUR. (1.60 INCHES
          BY 3 PM)
202 PM    10 FOOT SQUARE PLATE GALASS WINDOW BLOWN OUT AT 7TH AVE
          SOUTH AND 20TH STREET IN BIRMINGHAM.

          WARNINGS IN EFFECT...SEVERE THUNDERSTORM WARNING JEFFERSON
          AND SHELBY COUNTIES ISSUED 128 PM IN EFFECT TIL 215 PM.
          SEEVERE THUNDERSTORM WARNING SHELBY COUNTY ISSUED 224 PM
          IN EFFECT TIL 315 PM.
Local storm report, Jun 21, 3:15 PM CDT, 2 hours 30 minutes before
STORM REPORT CORRECTED
NATIONAL WEATHER SERVICE BIRMINGHAM AL
310 PM CDT THU JUN 21 1989

130 PM    MARBLE SIZE HAIL AT LEEDS ON THE SHELBY COUNTY - ST. CLAIR
          COUNTY LINE.  REPORTED BY BIRMINGHAM AREA RADIO CLUB (BARC)
145 PM    STREET FLOODING ON 19TH AVE IN HOMEWOOD...JEFFERSON COUNTY.
          WATER HALF-WAY UP THE DOOR OF AN ISUZU TROOPER. (BARC)
145 PM    WIND GUST TO 39 MPH AT NWS FORECAST OFFICE ON WEST OXMOOR
          IN BIMINGHAM.
155 PM    WINDS ESTIMATED 55 TO 60 MPH NEARLY TURNED OVER 18 WHEELER
          ON I-65 SOUTH NEAR 8 AVE SOUTH IN BIRMINGHAM. (BARC)
158 PM    WIND GUST TO 56 MPH AT CHANNNEL 6 ON RED MOUNTAIN IN BHM.
2-215 PM  LOCAL FLOODING AT BROADWAY AND GREEN SPRINGS IN HOMEWOOD.
          6 FOOT DIAMETER OAK TREE BLOWN DOWN IN 1200 BLOCK OF 31ST
          STREET SOUTH IN BIRMINGHAM. (BARC)
215 PM    WIND GUST TO 58 MPH AT BIRMINGHAM AIRPORT.
220 PM    DIME-SIZE HAIL AT INVERNESS IN NORTHERN SHELBY COUNTY. (BARC)
133 PM-
  230 PM  RAINFALL AT NWS 1.40 INCHES IN LESS THAN ONE HOUR. (1.60 INCHES
          BY 3 PM)
202 PM    10 FOOT SQUARE PLATE GLASS WINDOW BLOWN OUT AT 7TH AVE
          SOUTH AND 20TH STREET IN BIRMINGHAM.

          WARNINGS IN EFFECT...SEVERE THUNDERSTORM WARNING JEFFERSON
          AND SHELBY COUNTIES ISSUED 128 PM IN EFFECT TIL 215 PM.
          SEEVERE THUNDERSTORM WARNING SHELBY COUNTY ISSUED 224 PM
          IN EFFECT TIL 315 PM.

       ...CORRECTED SIZE OF TREE BLOWN DOWN...6 FEET NOT INCHES IN
          DIAMETER...
Special weather statement, Jun 21, 4:43 PM CDT, 1 hour 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 10:13 AM CDTSevere Thunderstorm WarningBMXBlount62 min
Jun 21, 11:17 AM CDTSevere Thunderstorm WarningBMXSt. Clair58 min
Jun 21, 12:55 PM CDTSevere Thunderstorm WarningBMXShelby35 min
Jun 21, 1:07 PM CDTSevere Thunderstorm WarningBMXCullman68 min
Jun 21, 1:28 PM CDTSevere Thunderstorm WarningBMXJefferson, Shelby47 min
Jun 21, 2:20 PM CDTSevere Thunderstorm WarningBMXLawrence55 min
Jun 21, 2:24 PM CDTSevere Thunderstorm WarningBMXShelby51 min
Jun 21, 3:23 PM CDTSevere Thunderstorm WarningBMXFayette, Walker67 min
Jun 21, 3:23 PM CDTSevere Thunderstorm WarningBMXTuscaloosa41 min
Jun 21, 4:55 PM CDTSevere Thunderstorm WarningBMXLamar35 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1990Every 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.