Alert archive / Kansas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 201, NWS Topeka, KS

July 31, 2019Douglas County, Osage County, Shawnee County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jul 31, 2019, 10:45 PM CDT for Douglas County, Osage County, Shawnee County, Kansas. It was in force for 45 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: Jul 31, 2019, 10:45 PM CDT (03:45 UTC)
Expired: Jul 31, 2019, 11:30 PM CDT
In force: 45 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Douglas County, KS, Osage County, KS, Shawnee County, KS

The radar

The Topeka radar (KTWX), 57 km from the middle of the area, began a volume at 03:44 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, 3.8 hours before the alert went out and 16 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: 49 J/kg
Mixed-layer CIN: -417 J/kg
Mixed-layer LCL: 1705 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 552 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 Topeka, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 6:21 PM CDT, 4 hours 24 minutes earlier.

Area forecast discussion, Jul 31, 6:21 PM CDT, 4 hours 24 minutes before

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Hazardous weather outlook, Jul 31, 4:27 PM CDT, 6 hours 18 minutes before

Hazardous Weather Outlook
National Weather Service Topeka KS
427 PM CDT Wed Jul 31 2019

KSZ008>012-020>024-026-034>040-054>056-058-059-012130-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
427 PM CDT Wed Jul 31 2019

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

.DAY ONE...Tonight.

There is a chance for a few isolated strong to severe storms this
evening. The primary hazards with any stronger storms that develop
will be hail, gusty winds, and heavy rainfall. A Flash Flood Watch
has been issued for portions of northeast and east central Kansas
from midnight tonight and extending through Saturday morning.

Flooding on the Big Blue River near Blue Rapids will continue.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Additional rounds of heavy rain are forecast for Thursday night
and again Friday night. There is still some uncertainty with
where exactly the heaviest rainfall amounts will be. However,
there is the potential for upwards of 3 to 6 inches of rain across
eastern Kansas by Saturday morning, with locally higher amounts
possible. As a result, there is a concern for flash flooding and
river flooding with these forecast rainfall amounts.

There is a chance for some strong to marginally severe thunderstorms
Thursday afternoon and evening. The primary hazards with any
stronger storms will be hail and gusty winds.

.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

Special weather statement, Jul 31, 8:45 PM CDT, 2 hours before

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Special weather statement, Jul 31, 9:18 PM CDT, 1 hour 27 minutes before

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Special weather statement, Jul 31, 9:36 PM CDT, 1 hour 9 minutes before

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Local storm report, Jul 31, 10:23 PM CDT, 22 minutes before

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Special weather statement, Jul 31, 10:26 PM CDT, 19 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
Jul 31, 8:45 PM CDT	Special Weather Statement	TOP	Douglas	30 min
Jul 31, 9:18 PM CDT	Special Weather Statement	TOP	Douglas	27 min
Jul 31, 9:36 PM CDT	Special Weather Statement	TOP	Douglas, Franklin	24 min
Jul 31, 9:41 PM CDT	Areal Flood Advisory	TOP	Douglas, Jefferson	3 hr
Jul 31, 10:03 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Franklin	42 min
Jul 31, 10:26 PM CDT	Special Weather Statement	TOP	Shawnee	34 min
Jul 31, 10:30 PM CDT	Severe Thunderstorm Warning	TOP	Anderson	45 min
Jul 31, 11:07 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin, Osage	38 min
Jul 31, 11:29 PM CDT	Special Weather Statement	TOP	Franklin	31 min
Jul 31, 11:32 PM CDT	Areal Flood Advisory	TOP	Franklin	3 hr
Jul 31, 11:44 PM CDT	Special Weather Statement	TOP	Franklin, Osage	31 min
Aug 1, 12:10 AM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey	50 min
Aug 1, 12:59 AM CDT	Areal Flood Advisory	TOP	Anderson	3 hr
Aug 1, 1:20 AM CDT	Special Weather Statement	TOP	Jefferson	25 min
Aug 1, 1:40 AM CDT	Flash Flood Warning	TOP	Douglas, Jackson, Jefferson	5 hr
Aug 1, 1:58 AM CDT	Special Weather Statement	TOP	Douglas	32 min
Aug 1, 2:03 AM CDT	Special Weather Statement	TOP	Franklin	27 min
Aug 1, 2:13 AM CDT	Severe Thunderstorm Warning	TOP	Douglas, Osage, Shawnee	36 min
Aug 1, 2:14 AM CDT	Flash Flood Warning	TOP	Franklin	4 hr
Aug 1, 2:48 AM CDT	Special Weather Statement	TOP	Franklin	27 min
Aug 1, 2:52 AM CDT	Special Weather Statement	TOP	Douglas	23 min
Aug 1, 3:02 AM CDT	Special Weather Statement	TOP	Jefferson	28 min
Aug 1, 3:16 AM CDT	Special Weather Statement	TOP	Douglas	29 min
Aug 1, 3:33 AM CDT	Flash Flood Warning	TOP	Anderson	3 hr
Aug 1, 4:09 AM CDT	Special Weather Statement	TOP	Douglas	36 min
Aug 1, 6:12 AM CDT	Flash Flood Warning	TOP	Anderson, Douglas, Franklin, Jefferson	10 hr
Aug 1, 6:56 AM CDT	River Flood Warning	TOP	Douglas	35 hr
Aug 1, 6:58 AM CDT	River Flood Warning	TOP	Franklin	37 hr
Aug 1, 6:58 AM CDT	River Flood Warning	TOP	Anderson	37 hr
Aug 1, 8:50 AM CDT	River Flood Warning	TOP	Franklin, Osage	44 hr
Aug 1, 8:50 AM CDT	River Flood Warning	TOP	Franklin	58 hr
Aug 1, 1:01 PM CDT	Areal Flood Warning	TOP	Douglas	3 hr
Aug 1, 3:57 PM CDT	Areal Flood Warning	TOP	Franklin	4 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2019 Every severe thunderstorm warning in 2019

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.