Alert archive / Kansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 233, NWS Goodland, KS

August 11, 1999Decatur County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Aug 11, 1999, 1:47 AM CDT for Decatur County, Kansas. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 11, 1999, 1:47 AM CDT (06:47 UTC)
Expired
Aug 11, 1999, 2:35 AM CDT
In force
48 min
Issued by
NWS Goodland, KS
Area
Whole counties

County Decatur County, KS

The radar

The Goodland radar (KGLD), 116 km from the middle of the area, began a volume at 06:49 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 10, 10:00 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 6.8 hours before the alert went out and 150 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, N. Platte/Lee Bi, NE at 00:00Z on 1999-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1568 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 1999-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
1568 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
1522 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.3
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.

NWS Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 10, 5:44 PM CDT, 8 hours 3 minutes earlier.

Area forecast discussion, Aug 10, 5:44 PM CDT, 8 hours 3 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
440 PM MDT (540 PM CDT) TUE AUG 10 1999

UPDATED LATEST ZONES FOR FIRST PERIOD TO REFLECT ISOLATED SEVERE
CONVECTION BREAKING OUT IN PARTS OF CWA. ALSO UPDATED TO INCLUDE
SEVERE THUNDERSTORM WATCH FOR PARTS OF CWA VALID UNTIL 9 PM MDT (10
PM CDT). STRONGEST CONVECTION SEEMS TO HAVE FORMED NEAR THETA E
RIDGE LINE ADDED BY AFTERNOON HEATING. AS VORT MAX APPROACHES
TONIGHT FROM COLORADO MORE SCATTERED CONVECTION CAN BE EXPECTED
THROUGH THE OVERNIGHT HOURS WITH BEST CHANCES OF CONVECTION OVER
NORTHERN 2/3 OF CWA.

.GLD...NONE.

LAMMERS

In the hours before

Local storm report, Aug 10, 8:46 PM CDT, 5 hours 1 minute before
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Local storm report, Aug 10, 8:46 PM CDT, 5 hours 1 minute before
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Special weather statement, Aug 10, 10:01 PM CDT, 3 hours 46 minutes before
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Special weather statement, Aug 10, 10:01 PM CDT, 3 hours 46 minutes before
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<head>
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  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </p>
      <p class="small" id="detail">
        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 Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 10, 8:11 PM CDTSevere Thunderstorm WarningGLDLogan, Thomas44 min
Aug 10, 8:30 PM CDTSevere Thunderstorm WarningGLDGove50 min
Aug 10, 8:58 PM CDTSevere Thunderstorm WarningGLDThomas47 min
Aug 10, 7:41 PM CDTSevere Thunderstorm WarningGLDYuma34 min
Aug 10, 8:20 PM CDTTornado WarningGLDYuma50 min
Aug 10, 9:48 PM CDTSevere Thunderstorm WarningGLDDundy47 min
Aug 10, 11:03 PM CDTSevere Thunderstorm WarningGLDDundy47 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1999Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.