A severe thunderstorm moved across Sumner and Sedgwick counties during the evening hours.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ICT wrote it up.
A severe thunderstorm moved across Sumner and Sedgwick counties during the evening hours.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wichita, KS wrote its last area forecast discussion before the first event at Jul 31, 5:49 PM CST, 1 hour 46 minutes earlier.
Area Forecast Discussion National Weather Service Wichita KS 649 PM CDT Sat Jul 31 2021 .SHORT TERM...(This evening through Tuesday night) Issued at 235 PM CDT Sat Jul 31 2021 Surface outflow boundary moved south to along the highway 54 corridor before weakening at early afternoon and appears the effective cold front will be somewhere along this line at peak heating late this afternoon. This will be focus for convection along and immediately behind the frontal passage where the weak convergence should overcome the weakening inhibition with blend of NAM/RAP soundings showing 2500-3000 j/kg of MLCAPE. This in combo with weak bulk shear around 20 kts should lend to pulse type strong/marginally severe storms with mainly a down-burst wind threat. Some elevated convection should develop and fester a bit further behind the front as it slides southward into Oklahoma later this evening and overnight, where 850-700mb CAPE values 1500-2000 j/kg will reside through midnight or so. So the spirit of the going forecast will be maintained tonight through Sunday morning. Otherwise, relatively cooler/drier air will advect south across the area on Sunday, continuing into Monday/Tuesday, providing heat relief with temperatures several degrees below early August climo. Darmofal .LONG TERM...(Wednesday through Saturday) Issued at 235 PM CDT Sat Jul 31 2021 A bit of an upper pattern change as we go late into the week with the trof filling/weakening over the eastern conus and upper ridge being replaced by a stronger Pacific trof moving into the northwest conus. This will result in quasi-zonal flow across the mid-conus and perhaps subtle ridging with increasing/warmer southerly low level flow across Kansas. So will continue to show a dry forecast with temperatures closer to climo. KED && .AVIATION...(For the 00Z TAFS through 00Z Sunday evening) Issued at 646 PM CDT Sat Jul 31 2021 Outflow boundary from last nights complex of storms has led to widely scattered SHRA/TSRA across portions of southern KS early this evening. Think most of this convection is diurnally driven, due to an uncapped airmass and a marginally unstable atmosphere. But as heating is lost think most of the convection will end as well. Will go with a VCTS and prevailing SHRA for KCNU where SHRA/TSRA is located at this time. At this time will hold off on any VCTS for KICT as latest visible satellite shows very little CU/TCU. Even with the TSRA around, expect VFR conditions due to the high bases of the conveciton. Expect the main synoptic cold front, currently located across central KS, to slowly move into srn KS late this evening and overnight. As the mid level baroclinic zone associated with the front moves across the area, low level moisture riding over the front may lead to another round of VCTS across southern KS from 06-09z/Sun. So will go with a VCTS for the KICT and KCNU tafs. Ketcham && .PRELIMINARY POINT TEMPS/POPS... Wichita-KICT 70 88 63 88 / 40 10 0 0 Hutchinson 68 89 61 89 / 20 10 0 0 Newton 68 87 61 87 / 30 10 0 0 ElDorado 68 86 61 86 / 40 10 0 0 Winfield-KWLD 70 87 61 87 / 60 20 0 0 Russell 66 89 60 91 / 10 0 0 0 Great Bend 66 88 60 89 / 20 10 0 0 Salina 67 90 61 90 / 10 0 0 0 McPherson 68 88 61 89 / 20 10 0 0 Coffeyville 71 87 63 86 / 50 20 0 0 Chanute 70 87 62 85 / 40 10 0 0 Iola 69 86 61 84 / 40 10 0 0 Parsons-KPPF 70 86 62 86 / 50 20 0 0 && .ICT WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 9 PM CDT this evening for KSZ067>069-082-083- 091>093. Excessive Heat Warning until 9 PM CDT this evening for KSZ070>072-094>096-098>100. && SHORT TERM...KED LONG TERM...KED AVIATION...BDK
Hazardous Weather Outlook National Weather Service Wichita KS 259 PM CDT Sat Jul 31 2021 KSZ032-033-047>053-067>072-082-083-091>096-098>100-012000- Russell-Lincoln-Barton-Ellsworth-Saline-Rice-McPherson-Marion-Chase- Reno-Harvey-Butler-Greenwood-Woodson-Allen-Kingman-Sedgwick-Harper- Sumner-Cowley-Elk-Wilson-Neosho-Chautauqua-Montgomery-Labette- 259 PM CDT Sat Jul 31 2021 This hazardous weather outlook is for portions of Central Kansas, South Central Kansas and Southeast Kansas. .DAY ONE...Late This Afternoon through Tonight Dangerous heat indices of 105 to 110 will continue to impact south central and southeast Kansas through early this evening. Please refer to the latest Heat Advisory and Excessive Heat Warning for additional details. Thunderstorms will become scattered across mainly south central and southeast Kansas late this afternoon through tonight. Some of the storms early this evening will be capable of producing strong down-burst wind gusts of 50 to 60 mph and small hail up to nickle size. .DAYS TWO THROUGH SEVEN...Sunday through Friday There is a slight chance for a lingering thunderstorm along the Oklahoma border counties of south central Kansas Sunday morning. The storms are not expected to be strong or severe. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated late this afternoon through tonight. && For a graphical version of this information, see our webpage at: https://weather.gov/crh/ghwo?sid=ict
Special Weather Statement National Weather Service Wichita KS 534 PM CDT Sat Jul 31 2021 KSZ091-092-312300- Harper KS-Sumner KS- 534 PM CDT Sat Jul 31 2021 The National Weather Service in Wichita has issued a * Significant Weather Advisory for... Southeastern Harper County in south central Kansas... West central Sumner County in south central Kansas... * Until 600 PM CDT. * At 533 PM CDT...National Weather Service Doppler radar was tracking a strong thunderstorm with locally heavy rainfall 9 miles southwest of Argonia, or 9 miles east of Anthony. this storm was nearly stationary. * Wind gusts up to 50 mph will be possible with this storm. * Locations impacted include... Bluff City and Freeport. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. These storms may produce ponding of water on roadways. Listen for later statements or possible flood warnings...should the risk for minor low-land flooding become more imminent. && LAT...LON 3722 9797 3724 9774 3706 9772 3705 9796 TIME...MOT...LOC 2234Z 344DEG 1KT 3715 9785 METZGER
Special Weather Statement
National Weather Service Wichita KS
544 PM CDT Sat Jul 31 2021
KSZ095-096-312315-
Wilson KS-Neosho KS-
544 PM CDT Sat Jul 31 2021
The National Weather Service in Wichita has issued a
* Significant Weather Advisory for...
Southeastern Wilson County in southeastern Kansas...
Southwestern Neosho County in southeastern Kansas...
* Until 615 PM CDT.
* At 541 PM CDT...National Weather Service Doppler radar was tracking
a strong thunderstorm with locally heavy rainfall over Thayer, or
11 miles east of Neodesha...moving southeast at 5 mph.
* Wind gusts up to 50 mph will be possible with this storm.
* Locations impacted include...
Thayer, Galesburg and Lake Parsons.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
These storms may produce ponding of water on roadways. Listen for
later statements or possible flood warnings...should the risk for
minor low-land flooding become more imminent.
&&
LAT...LON 3738 9532 3738 9555 3739 9561 3758 9552
3752 9525
TIME...MOT...LOC 2243Z 297DEG 3KT 3746 9548
METZGERSpecial Weather Statement National Weather Service Wichita KS 623 PM CDT Sat Jul 31 2021 KSZ096-010000- Neosho KS- 623 PM CDT Sat Jul 31 2021 The National Weather Service in Wichita has issued a * Significant Weather Advisory for... Southern Neosho County in southeastern Kansas... * Until 700 PM CDT. * At 622 PM CDT...National Weather Service Doppler radar was tracking a strong thunderstorm with locally heavy rainfall over Galesburg, or 8 miles southwest of Erie...moving west at 10 mph. * Wind gusts up to 50 mph will be possible with this storm. * Locations impacted include... St. Paul, Thayer, Galesburg, Earlton, Lake Parsons and South Mound. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. These storms may produce ponding of water on roadways. Listen for later statements or possible flood warnings...should the risk for minor low-land flooding become more imminent. && LAT...LON 3738 9552 3764 9552 3751 9509 3739 9509 TIME...MOT...LOC 2323Z 101DEG 8KT 3746 9533 METZGER
Special Weather Statement National Weather Service Wichita KS 717 PM CDT Sat Jul 31 2021 KSZ092-010045- Sumner KS- 717 PM CDT Sat Jul 31 2021 The National Weather Service in Wichita has issued a * Significant Weather Advisory for... Central Sumner County in south central Kansas... * Until 745 PM CDT. * At 716 PM CDT...National Weather Service Doppler radar was tracking a strong thunderstorm with locally heavy rainfall near Wellington. this storm was nearly stationary. * Wind gusts up to 50 mph will be possible with this storm. * Locations impacted include... Wellington, Conway Springs, Argonia, Mayfield, Milan, Perth and Wellington Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. These storms may produce ponding of water on roadways. Listen for later statements or possible flood warnings...should the risk for minor low-land flooding become more imminent. && LAT...LON 3714 9780 3743 9781 3735 9719 3711 9730 TIME...MOT...LOC 0017Z 307DEG 2KT 3724 9748 METZGER
Special Weather Statement National Weather Service Wichita KS 803 PM CDT Sat Jul 31 2021 KSZ092-093-010130- Cowley KS-Sumner KS- 803 PM CDT Sat Jul 31 2021 The National Weather Service in Wichita has issued a * Significant Weather Advisory for... Central Cowley County in south central Kansas... East central Sumner County in south central Kansas... * Until 830 PM CDT. * At 800 PM CDT...National Weather Service Doppler radar was tracking strong thunderstorms with locally heavy rainfall along a line extending from near Oxford to Cedar Vale...and moving east at 20 mph. * Wind gusts up to 50 mph will be possible with these storms. * Locations impacted include... Winfield, Oxford, Dexter and Strother Field Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. These storms may produce ponding of water on roadways. Listen for later statements or possible flood warnings...should the risk for minor low-land flooding become more imminent. && LAT...LON 3735 9725 3728 9654 3709 9664 3720 9737 TIME...MOT...LOC 0103Z 280DEG 18KT 3729 9725 3709 9650 METZGER
Special Weather Statement
National Weather Service Wichita KS
809 PM CDT Sat Jul 31 2021
KSZ092-010200-
Sumner KS-
809 PM CDT Sat Jul 31 2021
The National Weather Service in Wichita has issued a
* Significant Weather Advisory for...
Northern Sumner County in south central Kansas...
* Until 900 PM CDT.
* At 807 PM CDT...National Weather Service Doppler radar was tracking
a strong thunderstorm with locally heavy rainfall near
Wellington...moving southeast at 5 mph.
* Wind gusts up to 50 mph will be possible with this storm.
* Locations impacted include...
Wellington, Belle Plaine, Conway Springs, Mayfield, Wellington
Airport and Riverdale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
These storms may produce ponding of water on roadways. Listen for
later statements or possible flood warnings...should the risk for
minor low-land flooding become more imminent.
&&
LAT...LON 3732 9775 3748 9754 3748 9753 3738 9722
3717 9738
TIME...MOT...LOC 0109Z 311DEG 3KT 3733 9745
METZGERThe Wichita radar (KICT), 18 km away, was scanning. The volume nearest the first event began at 01:37 UTC.
1 thunderstorm wind. Local standard time, as filed.
Large tree limbs of five to six inches in diameter were reported to be down around town.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2021Every state in 2021This day in weather historyWarnings in Kansas, July 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 975767.