Alert archive / Kansas / Special Weather Statements in 2021

Special Weather Statement, NWS Topeka, KS

May 9, 20214 counties in Kansas

NWS Topeka, KS issued this special weather statement at May 9, 2021, 3:56 AM CDT for 4 counties in Kansas. It was in force for 49 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
May 9, 2021, 3:56 AM CDT (08:56 UTC)
Expired
May 9, 2021, 4:45 AM CDT
In force
49 min
Issued by
NWS Topeka, KS

Counties Douglas County, KS, Jackson County, KS, Jefferson County, KS, Shawnee County, KS

The radar

The Topeka radar (KTWX), 82 km from the middle of the area, began a volume at 09:00 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 (KTOP), launched 00:00Z, 8.9 hours before the alert went out and 31 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, Topeka, KS at 00:00Z on 2021-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 377 joules per kilogram.LCLLFCEL10008507005003002001001 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, Topeka, KS at 00:00Z on 2021-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.19395878Sfc1 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
377 J/kg
Mixed-layer CIN
-170 J/kg
Mixed-layer LCL
1653 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
362 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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>

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 May 9, 3:29 AM CDT, 27 minutes earlier.

Area forecast discussion, May 9, 3:29 AM CDT, 27 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, May 9, 12:55 AM CDT, 3 hours 1 minute before
Hazardous Weather Outlook
National Weather Service Topeka KS
1255 AM CDT Sun May 9 2021

KSZ008>012-020>024-026-034>040-054>056-058-059-100600-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
1255 AM CDT Sun May 9 2021

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

.DAY ONE...Tonight.

Strong storms with locally heavy rain are expected through the
night. Rises in creeks and streams as well as flash flooding are
possible. Rainfall up to 4 inches is possible with most areas
south of I-70 in the 1 to 3 inch range. A few strong to severe
storms are also possible with strong winds and hail the main
hazards.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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

In the hours before

Local storm report, May 8, 11:33 PM CDT, 4 hours 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1133 PM CDT SAT MAY 8 2021

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

1110 PM     TSTM WND GST     VALLEY FALLS            39.34N 95.46W
05/08/2021  E70 MPH          JEFFERSON          KS   EMERGENCY MNGR

&&

BD
Local storm report, May 8, 11:38 PM CDT, 4 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1138 PM CDT SAT MAY 8 2021

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

1120 PM     TSTM WND DMG     3 WNW MCLOUTH           39.22N 95.25W
05/08/2021                   JEFFERSON          KS   FIRE DEPT/RESCUE

            TREE REPORTED DOWN AND BLOCKING THE ROAD.

&&

BD
Special weather statement, May 9, 12:00 AM CDT, 3 hours 56 minutes before
Special Weather Statement
National Weather Service Topeka KS
1200 AM CDT Sun May 9 2021

KSZ035-090545-
Dickinson-
1200 AM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN DICKINSON COUNTY UNTIL
1245 AM CDT...

At 1159 PM CDT, Doppler radar was tracking a strong thunderstorm near
Gypsum, moving east at 35 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Herington, Hope and Carlton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

A Tornado Watch remains in effect until 100 AM CDT for central and
east central Kansas.

LAT...LON 3876 9737 3878 9693 3861 9693 3861 9737
TIME...MOT...LOC 0459Z 266DEG 30KT 3871 9739

65/DR
Special weather statement, May 9, 12:58 AM CDT, 2 hours 58 minutes before
Special Weather Statement
National Weather Service Topeka KS
1258 AM CDT Sun May 9 2021

KSZ037-090645-
Morris-
1258 AM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN MORRIS COUNTY UNTIL 145
AM CDT...

At 1257 AM CDT, Doppler radar was tracking a strong thunderstorm over
Burdick, moving east at 35 mph.

Nickel size hail and winds up to 40 mph will be possible with this
storm.

Locations impacted include...
Dunlap and Burdick.

LAT...LON 3852 9693 3863 9693 3860 9635 3852 9635
TIME...MOT...LOC 0557Z 271DEG 31KT 3855 9685

65/DR
Special weather statement, May 9, 2:28 AM CDT, 1 hour 28 minutes before
Special Weather Statement
National Weather Service Topeka KS
228 AM CDT Sun May 9 2021

KSZ058-059-090800-
Coffey-Anderson-
228 AM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ANDERSON AND
NORTHEASTERN COFFEY COUNTIES UNTIL 300 AM CDT...

At 227 AM CDT, Doppler radar was tracking a strong thunderstorm near
New Strawn, moving east at 35 mph.

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

Locations impacted include...
Burlington, New Strawn and Harris.

LAT...LON 3820 9574 3835 9577 3839 9541 3819 9537
TIME...MOT...LOC 0727Z 263DEG 30KT 3828 9570

Teefey
Special weather statement, May 9, 3:56 AM CDT, 0 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 Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 7:15 PM CDTSpecial Weather StatementTOPRepublic15 min
May 8, 7:27 PM CDTSevere Thunderstorm WarningTOPRepublic33 min
May 8, 7:52 PM CDTSpecial Weather StatementTOPMarshall23 min
May 8, 7:56 PM CDTSevere Thunderstorm WarningTOPRepublic, Washington49 min
May 8, 8:03 PM CDTSevere Thunderstorm WarningTOPMarshall42 min
May 8, 8:38 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington52 min
May 8, 8:48 PM CDTSevere Thunderstorm WarningTOPDickinson57 min
May 8, 9:24 PM CDTSevere Thunderstorm WarningTOPGeary, Morris, Riley51 min
May 8, 9:27 PM CDTSpecial Weather StatementTOPMarshall33 min
May 8, 9:51 PM CDTSevere Thunderstorm WarningTOPGeary, Pottawatomie, Riley24 min
May 8, 10:03 PM CDTSevere Thunderstorm WarningTOPGeary, Jackson, Morris, Pottawatomie, Riley, Shawnee and 1 more42 min
May 8, 10:11 PM CDTTornado WarningTOPPottawatomie, Riley, Wabaunsee21 min
May 8, 10:43 PM CDTSevere Thunderstorm WarningTOPLyon, Osage, Shawnee, Wabaunsee47 min
May 8, 11:00 PM CDTSevere Thunderstorm WarningTOPJackson, Jefferson, Shawnee45 min
May 8, 11:00 PM CDTSevere Thunderstorm WarningTOPDickinson45 min
May 8, 11:26 PM CDTSpecial Weather StatementTOPDouglas49 min
May 8, 11:42 PM CDTAreal Flood AdvisoryTOPShawnee, Wabaunsee3 hr
May 9, 12:00 AM CDTAreal Flood AdvisoryTOPDickinson, Geary3 hr
May 9, 12:00 AM CDTSpecial Weather StatementTOPDickinson45 min
May 9, 12:15 AM CDTFlash Flood WarningTOPShawnee, Wabaunsee4 hr
May 9, 12:31 AM CDTAreal Flood AdvisoryTOPDouglas3 hr
May 9, 12:58 AM CDTSpecial Weather StatementTOPMorris47 min
May 9, 2:28 AM CDTSpecial Weather StatementTOPCoffey32 min

Nearby

Special Weather Statements in Kansas, 2021Every special weather statement in 2021

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.