Alert archive / Kansas / Winter Weather Advisories in 2021

Winter Weather Advisory 11, NWS Topeka, KS

March 17, 202110 counties in Kansas

NWS Topeka, KS issued this winter weather advisory at Mar 17, 2021, 3:11 PM CDT for 10 counties in Kansas. It took effect at Mar 17, 2021, 10:00 PM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Mar 17, 2021, 3:11 PM CDT (20:11 UTC)
In effect from: Mar 17, 2021, 10:00 PM CDT
Expired: Mar 18, 2021, 2:45 AM CDT
In force: 5 hr
Issued by: NWS Topeka, KS

Counties Anderson County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Jefferson County, KS, Lyon County, KS, Morris County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 54 km from the middle of the area, began a volume at 20:10 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 (KTOP), launched 12:00Z, 8.2 hours before the alert went out and 35 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 601 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter weather advisory 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 winter weather advisory went out at Mar 17, 12:49 PM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, Mar 17, 12:49 PM CDT, 2 hours 22 minutes before

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Hazardous weather outlook, Mar 17, 10:27 AM CDT, 4 hours 44 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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        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 Topeka, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 16, 11:33 PM CDT	Special Weather Statement	TOP	Lyon	27 min
Mar 16, 11:35 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Wabaunsee	25 min
Mar 16, 11:57 PM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage, Wabaunsee	33 min
Mar 17, 12:03 AM CDT	Severe Thunderstorm Warning	TOP	Lyon, Osage	42 min
Mar 17, 12:18 AM CDT	Severe Thunderstorm Warning	TOP	Shawnee, Wabaunsee	28 min
Mar 17, 12:31 AM CDT	Severe Thunderstorm Warning	TOP	Douglas, Osage, Shawnee	18 min
Mar 17, 12:53 AM CDT	Special Weather Statement	TOP	Douglas	37 min
Mar 17, 2:09 AM CDT	Special Weather Statement	TOP	Wabaunsee	36 min
Mar 17, 2:28 AM CDT	Special Weather Statement	TOP	Shawnee	32 min
Mar 17, 3:01 AM CDT	Special Weather Statement	TOP	Jefferson	14 min
Mar 17, 3:15 AM CDT	Special Weather Statement	TOP	Coffey	30 min
Mar 17, 7:14 AM CDT	Areal Flood Advisory	TOP	Anderson, Coffey, Franklin, Osage	2 hr
Mar 17, 7:40 AM CDT	Special Weather Statement	TOP	Douglas, Franklin, Jackson, Jefferson, Shawnee	35 min
Mar 17, 9:15 AM CDT	River Flood Warning	TOP	Lyon, Osage	44 hr
Mar 17, 9:16 AM CDT	River Flood Warning	TOP	Anderson	35 hr
Mar 17, 9:27 AM CDT	River Flood Warning	TOP	Franklin	24 hr
Mar 17, 4:32 PM CDT	River Flood Warning	TOP	Franklin, Osage	39 hr

Nearby

Winter Weather Advisories in Kansas, 2021 Every winter weather advisory 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.