Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 91, NWS Charleston, SC

August 20, 1999Jenkins County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Aug 20, 1999, 5:59 PM EDT for Jenkins County, Georgia. It was in force for 46 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 20, 1999, 5:59 PM EDT (21:59 UTC)
Expired: Aug 20, 1999, 6:45 PM EDT
In force: 46 min
Issued by: NWS Charleston, SC
Area: Whole counties

County Jenkins County, GA

What was reported inside it

Time	Report	Where	Remark
Aug 20, 6:15 PM EDT	Thunderstorm Wind 50	Millen, GA	Numerous trees down across the county and trees blocking roads south of Millen.

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, 10.0 hours before the alert went out and 184 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: 2236 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 978 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 17 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.

NWS Charleston, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 3:25 PM EDT, 2 hours 34 minutes earlier.

Area forecast discussion, Aug 20, 3:25 PM EDT, 2 hours 34 minutes before

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In the hours before

Special weather statement, Aug 20, 12:00 PM EDT, 5 hours 59 minutes before

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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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:21 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Dorchester	64 min
Aug 19, 8:49 PM EDT	Severe Thunderstorm Warning	CHS	Charleston	61 min
Aug 19, 11:51 PM EDT	Severe Thunderstorm Warning	CHS	Allendale	64 min
Aug 20, 12:03 AM EDT	Tornado Warning	CHS	Allendale	32 min
Aug 20, 7:07 PM EDT	Severe Thunderstorm Warning	CHS	Hampton	58 min
Aug 20, 6:29 PM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Screven	61 min
Aug 20, 6:39 PM EDT	Severe Thunderstorm Warning	CHS	Candler	36 min
Aug 20, 7:07 PM EDT	Severe Thunderstorm Warning	CHS	Bryan	58 min

Nearby

Severe Thunderstorm Warnings in Georgia, 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.