Alert archive / Kansas / Special Weather Statements in 2018

Special Weather Statement, NWS Topeka, KS

August 6, 2018Brown County, Kansas

NWS Topeka, KS issued this special weather statement at Aug 6, 2018, 6:09 PM CDT for Brown County, Kansas. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 6, 2018, 6:09 PM CDT (23:09 UTC)
Expired: Aug 6, 2018, 7:00 PM CDT
In force: 51 min
Issued by: NWS Topeka, KS

County Brown County, KS

The radar

The Topeka radar (KTWX), 105 km from the middle of the area, began a volume at 23:10 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

Topeka, KS (KFOE), launched 12:00Z, 11.2 hours before the alert went out and 97 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: 1201 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 1394 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Topeka, KS wrote its last area forecast discussion before this special weather statement went out at Aug 6, 2:48 PM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Aug 6, 2:48 PM CDT, 3 hours 21 minutes before

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<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>
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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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Hazardous weather outlook, Aug 6, 3:40 AM CDT, 14 hours 29 minutes before

Hazardous Weather Outlook
National Weather Service Topeka KS
340 AM CDT Mon Aug 6 2018

KSZ008>012-020>024-026-034>040-054>056-058-059-070845-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
340 AM CDT Mon Aug 6 2018

This hazardous weather outlook is for east central...north
central and northeast Kansas.

.DAY ONE...Today and Tonight.

Thunderstorms are expected to develop late this afternoon and
persist through the evening and overnight hours. Some of these
storms may be strong to severe with damaging winds and locally
heavy rains the main threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

More detailed information can be accessed at...
http://www.weather.gov/top/sitrep

KDS

In the hours before

Special weather statement, Aug 6, 5:44 PM CDT, 25 minutes before

Special Weather Statement
National Weather Service Topeka KS
544 PM CDT MON AUG 6 2018

KSZ010-011-062315-
Nemaha-Marshall-
544 PM CDT MON AUG 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN NEMAHA AND NORTHEASTERN
MARSHALL COUNTIES UNTIL 615 PM CDT...

At 543 PM CDT, Doppler radar was tracking strong thunderstorm 4
miles northeast of Axtell, moving northeast at 20 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Seneca, Axtell, Bern, Summerfield, Oneida and Baileyville.

LAT...LON 3990 9581 3974 9639 3999 9641 4000 9637
      4000 9588
TIME...MOT...LOC 2243Z 243DEG 19KT 3991 9619

jp

Special weather statement, Aug 6, 6:09 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Topeka KS
609 PM CDT MON AUG 6 2018

KSZ011-012-070000-
Brown-Nemaha-
609 PM CDT MON AUG 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN NEMAHA AND
NORTHWESTERN BROWN COUNTIES UNTIL 700 PM CDT...

At 609 PM CDT, Doppler radar was tracking a strong thunderstorm near
Bern, moving east at 35 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Hiawatha, Sabetha, Seneca, Fairview, Morrill, Bern, Reserve, Oneida
and Hamlin.

LAT...LON 3977 9551 3980 9610 4000 9612 4000 9551
TIME...MOT...LOC 2309Z 265DEG 29KT 3993 9597

Sanders

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 11:58 PM CDT	Special Weather Statement	TOP	Republic	32 min
Aug 6, 12:28 AM CDT	Special Weather Statement	TOP	Republic	47 min
Aug 6, 1:35 AM CDT	Special Weather Statement	TOP	Cloud	40 min
Aug 6, 5:44 PM CDT	Special Weather Statement	TOP	Nemaha	31 min
Aug 6, 6:24 PM CDT	Severe Thunderstorm Warning	TOP	Brown, Nemaha	37 min

Nearby

Special Weather Statements in Kansas, 2018 Every special weather statement in 2018

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.