Alert archive / Kansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 218, NWS Goodland, KS

August 9, 20205 counties in Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Aug 9, 2020, 7:20 PM CDT for 5 counties in Kansas. It was in force for 71 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 9, 2020, 7:20 PM CDT (00:20 UTC)
Expired
Aug 9, 2020, 8:31 PM CDT
In force
71 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Gove County, KS, Logan County, KS, Sheridan County, KS, Thomas County, KS, Wallace County, KS

The radar

The Goodland radar (KGLD), 69 km from the middle of the area, began a volume at 00:23 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 nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 0.3 hours before the alert went out and 174 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, Dodge City, at 00:00Z on 2020-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1448 joules per kilogram.LCLEL10008507005003002001001 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, Dodge City, at 00:00Z on 2020-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
1448 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
2828 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

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 9, 6:52 PM CDT, 28 minutes earlier.

Area forecast discussion, Aug 9, 6:52 PM CDT, 28 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Aug 9, 3:30 PM CDT, 3 hours 50 minutes before
Hazardous Weather Outlook
National Weather Service Goodland KS
230 PM MDT Sun Aug 9 2020

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-101200-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
230 PM MDT Sun Aug 9 2020 /330 PM CDT Sun Aug 9 2020/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

Heat index values of 100 to 103 degrees are expected this afternoon
along and east of a line from Trenton to Colby and Leoti.

Scattered strong to severe thunderstorms are expected along and east
of a line from Wray to Kit Carson Colorado through 9 PM MDT (10 PM
CDT). The primary threats with any storms will be wind gusts to 70
mph, hail up to the size of golf balls, and a brief period of locally
heavy rainfall which could create flash flooding.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY...

There is a Marginal Risk of severe thunderstorms along the Colorado
Kansas border area Tuesday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Local storm report, Aug 9, 5:08 PM CDT, 2 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
408 PM MDT SUN AUG 9 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0347 PM     HAIL             15 S EDSON              39.12N 101.51W
08/09/2020  E0.88 INCH       WALLACE            KS   PUBLIC

            HAIL PEA TO NICKEL IN SIZE. TIME ESTIMATED
            BY RADAR AND CALLER INFORMATION.

&&

KMK
Special weather statement, Aug 9, 5:40 PM CDT, 1 hour 40 minutes before
Special Weather Statement
National Weather Service Goodland KS
440 PM MDT Sun Aug 9 2020

KSZ027-041-092330-
Wallace KS-Greeley KS-
440 PM MDT Sun Aug 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WALLACE AND NORTHERN
GREELEY COUNTIES UNTIL 530 PM MDT...

At 439 PM MDT, Doppler radar was tracking an isolated thunderstorm
12 miles south of Weskan, or 15 miles southwest of Sharon Springs,
moving east at 10 mph.

Wind gusts up to 55 mph are possible with this storm.

This storm will remain over mainly rural areas of southern Wallace
and northern Greeley Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you see an advancing wall of dust, do not drive into it. Blowing
dust can quickly reduce visibility which can result in deadly traffic
accidents, chain collisions and massive pileups.

&&

LAT...LON 3858 10204 3880 10204 3886 10158 3857 10157
TIME...MOT...LOC 2239Z 266DEG 8KT 3869 10187

Vincent
Local storm report, Aug 9, 5:41 PM CDT, 1 hour 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
441 PM MDT SUN AUG 9 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0400 PM     HAIL             11 WNW WINONA           39.10N 101.43W
08/09/2020  E0.25 INCH       LOGAN              KS   PUBLIC

            TIME ESTIMATED BY RADAR.

&&

KMK
Special weather statement, Aug 9, 6:33 PM CDT, 47 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Aug 9, 6:41 PM CDT, 39 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Aug 9, 6:50 PM CDT, 30 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 7:56 PM CDTSevere Thunderstorm WarningGLDGreeley, Wichita40 min
Aug 9, 8:34 PM CDTSpecial Weather StatementGLDLogan56 min
Aug 10, 8:38 AM CDTSpecial Weather StatementGLDSherman, Thomas52 min
Aug 10, 9:47 AM CDTSpecial Weather StatementGLDSherman13 min
Aug 10, 10:18 AM CDTSpecial Weather StatementGLDSherman42 min
Aug 10, 11:06 AM CDTSpecial Weather StatementGLDSherman24 min
Aug 10, 11:22 AM CDTSpecial Weather StatementGLDThomas23 min
Aug 10, 11:39 AM CDTSpecial Weather StatementGLDLogan36 min
Aug 10, 11:55 AM CDTSevere Thunderstorm WarningGLDLogan, Thomas, Wallace65 min
Aug 10, 12:22 PM CDTSpecial Weather StatementGLDSherman23 min
Aug 10, 1:17 PM CDTSpecial Weather StatementGLDLogan, Thomas43 min
Aug 9, 7:36 PM CDTSpecial Weather StatementGLDRed Willow69 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2020Every severe thunderstorm warning in 2020

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.