Alert archive / South Carolina / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 15, NWS Columbia, SC

April 8, 1999Bamberg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 8, 1999, 7:59 PM EDT for Bamberg County, South Carolina. It was in force for 31 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: Apr 8, 1999, 7:59 PM EDT (23:59 UTC)
Expired: Apr 8, 1999, 8:30 PM EDT
In force: 31 min
Issued by: NWS Columbia, SC
Area: Whole counties

County Bamberg County, SC

What was reported inside it

Time	Report	Where	Remark
Apr 8, 8:15 PM EDT	Thunderstorm Wind 50	Olar, SC	Highway Patrol reported trees down along highway 321.

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 nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 12.0 hours before the alert went out and 104 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: 1021 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 547 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.0

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, Apr 8, 6:11 PM EDT, 1 hour 48 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
611 PM EDT THU APR 08 1999

TIME (EST) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

607 PM     MCCORMICK                 SC   0.75 INCH HAIL
04/08/99   MCCORMICK                      DIME SIZED HAIL REPORTED
                                          BY MCCORMICK CO SO.

MILLER

Local storm report, Apr 8, 6:11 PM EDT, 1 hour 48 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
611 PM EDT THU APR 08 1999

TIME (EST) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

607 PM     MCCORMICK                 SC   0.75 INCH HAIL
04/08/99   MCCORMICK                      DIME SIZED HAIL REPORTED
                                          BY MCCORMICK CO SO.

MILLER

Local storm report, Apr 8, 7:32 PM EDT, 27 minutes before

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Local storm report, Apr 8, 7:32 PM EDT, 27 minutes before

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Local storm report, Apr 8, 7:37 PM EDT, 22 minutes before

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Local storm report, Apr 8, 7:37 PM EDT, 22 minutes before

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    <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">
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The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 8, 5:24 PM EDT	Severe Thunderstorm Warning	CAE	McCormick	66 min
Apr 8, 6:25 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield	35 min
Apr 8, 6:35 PM EDT	Severe Thunderstorm Warning	CAE	Aiken	40 min
Apr 8, 6:45 PM EDT	Severe Thunderstorm Warning	CAE	Barnwell	45 min
Apr 8, 7:27 PM EDT	Tornado Warning	CAE	Barnwell	33 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 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.