Alert archive / Kansas / Special Weather Statements in 2021

Special Weather Statement, NWS Topeka, KS

March 17, 20215 counties in Kansas

NWS Topeka, KS issued this special weather statement at Mar 17, 2021, 7:40 AM CDT for 5 counties in Kansas. It was in force for 35 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: Mar 17, 2021, 7:40 AM CDT (12:40 UTC)
Expired: Mar 17, 2021, 8:15 AM CDT
In force: 35 min
Issued by: NWS Topeka, KS

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

The radar

The Topeka radar (KTWX), 79 km from the middle of the area, began a volume at 12:40 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, 0.7 hours before the alert went out and 28 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

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 Mar 17, 5:53 AM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Mar 17, 5:53 AM CDT, 1 hour 47 minutes before

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Hazardous weather outlook, Mar 17, 4:18 AM CDT, 3 hours 22 minutes before

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In the hours before

Special weather statement, Mar 17, 2:09 AM CDT, 5 hours 31 minutes before

Special Weather Statement
National Weather Service Topeka KS
209 AM CDT Wed Mar 17 2021

KSZ037-038-054-170745-
Wabaunsee-Lyon-Morris-
209 AM CDT Wed Mar 17 2021

...SPECIAL WEATHER STATEMENT FOR NORTHEASTERN MORRIS...SOUTHERN
WABAUNSEE AND NORTHWESTERN LYON COUNTIES...

At 208 AM CDT, Doppler radar was tracking a strong thunderstorm 6
miles northwest of Bushong, moving northeast at 25 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Eskridge.

LAT...LON 3869 9616 3870 9648 3889 9642 3887 9595
TIME...MOT...LOC 0708Z 220DEG 21KT 3870 9634

Special weather statement, Mar 17, 2:28 AM CDT, 5 hours 12 minutes before

Special Weather Statement
National Weather Service Topeka KS
228 AM CDT Wed Mar 17 2021

KSZ026-039-170800-
Shawnee-Jefferson-
228 AM CDT Wed Mar 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN JEFFERSON AND
NORTHEASTERN SHAWNEE COUNTIES UNTIL 300 AM CDT...

At 228 AM CDT, Doppler radar was tracking a strong thunderstorm over
southern Topeka, moving northeast at 15 mph.

Penny size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Topeka, Tecumseh, Pauline and Grantville.

This includes Kansas Turnpike between mile markers 175 and 185.

LAT...LON 3895 9566 3898 9578 3918 9573 3911 9544
TIME...MOT...LOC 0728Z 209DEG 15KT 3900 9569

Special weather statement, Mar 17, 3:01 AM CDT, 4 hours 39 minutes before

Special Weather Statement
National Weather Service Topeka KS
301 AM CDT Wed Mar 17 2021

KSZ026-170815-
Jefferson-
301 AM CDT Wed Mar 17 2021

...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN JEFFERSON COUNTY...

At 301 AM CDT, Doppler radar was tracking a strong thunderstorm 5
miles east of Williamstown, moving northeast at 20 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
McLouth.

LAT...LON 3913 9519 3904 9519 3904 9527 3905 9528
      3904 9528 3913 9532 3925 9518 3913 9518
TIME...MOT...LOC 0801Z 221DEG 18KT 3907 9522

Special weather statement, Mar 17, 3:15 AM CDT, 4 hours 25 minutes before

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Special weather statement, Mar 17, 7:40 AM CDT, 0 minutes before

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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, 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, 3:11 PM CDT	Winter Weather Advisory	TOP	Anderson, Coffey, Douglas, Franklin, Jefferson, Lyon and 4 more	12 hr
Mar 17, 4:32 PM CDT	River Flood Warning	TOP	Franklin, Osage	39 hr

Nearby

Special Weather Statements in Kansas, 2021 Every 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.