Alert archive / Kansas / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 71, NWS Wichita, KS
NWS Wichita, KS issued this severe thunderstorm warning at Apr 17, 2026, 2:12 PM CDT for Harper County, Kansas. It was in force for 48 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
- Apr 17, 2026, 2:12 PM CDT (19:12 UTC)
- Expired
- Apr 17, 2026, 3:00 PM CDT
- In force
- 48 min
- Issued by
- NWS Wichita, KS
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Harper County, KS
The radar
The Vance AFB radar (KVNX), 50 km from the middle of the area, began a volume at 19:14 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 17, 1:40 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 7.2 hours before the alert went out and 227 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.
- Mixed-layer CAPE
- 1174 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 310 m²/s²
- 0-3 km storm-relative helicity
- 330 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 10.2
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 Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 17, 12:20 PM CDT, 1 hour 52 minutes earlier. Its key messages:
- Severe storm threat continues across portions of south central and southeast Kansas through the rest of the afternoon and evening hours. Large hail, damaging winds, locally heavy rainfall, and even a few tornadoes remain possible.
- Cooler temperatures this weekend, then a warming trend to start next week.
- Quiet weather through the middle of next week before the return of storm chances.
Area forecast discussion, Apr 17, 12:20 PM CDT, 1 hour 52 minutes before
Area Forecast Discussion National Weather Service Wichita KS 1220 PM CDT Fri Apr 17 2026 .KEY MESSAGES... - Severe storm threat continues across portions of south central and southeast Kansas through the rest of the afternoon and evening hours. Large hail, damaging winds, locally heavy rainfall, and even a few tornadoes remain possible. - Cooler temperatures this weekend, then a warming trend to start next week. - Quiet weather through the middle of next week before the return of storm chances. && .DISCUSSION... Issued at 1215 PM CDT Fri Apr 17 2026 Water vapor imagery and RAP analysis depict strong mid/upper flow ejecting out of the Southern Rockies into the Plains. A strong cold front as of 12 PM was located along a line from roughly Kingman to Newton to Hillsboro. An extremely buoyant airmass lies ahead of this surface boundary with 3000-4000 J/kg of surface-based CAPE, which will support rapid storm development along the boundary this afternoon into the evening hours. This instability paired with 50 kts of deep-layer shear will promote severe storms capable of producing large to very large hail (greater than 2 inches in diameter) with the initial activity. However, per the previous discussion, we expect storm mode to go linear rather quickly as short term guidance continues to indicate shear oriented mostly parallel to the cold front. Therefore, as activity becomes linear through the rest of the afternoon into the evening hours, the primary threats should transition to strong winds and heavy rainfall. Should a storm be able to separate from the cold front and remain discrete into the evening hours, however, a strengthening LLJ will increase low-level shear/SRH and may allow for a slightly higher tornado threat, especially across far southeast Kansas. In addition to the severe threat, the exceptionally moist airmass ahead of today's front may provide the potential for heavy rain and localized flooding concerns later tonight, especially if storms begin to train along the boundary. This threat will likely remain confined to areas along and southeast of the Kansas Turnpike. We expect storm chances to largely come to an end after midnight as the cold front exits southeast Kansas. Cooler and quieter weather is expected to follow in the wake of today's system as northwest flow aloft settles in over the Heartland. Low temperatures Saturday morning are expected to dip into the low 40s along and southeast of the Kansas Turnpike, while portions of central Kansas may see temperatures near freezing. Additionally, breezy north winds in the trailing airmass will promote wind chills in the 20s and 30s to start the day. Seasonably cool highs in the low 60s are expected across the majority of the area. With clear to mostly clear skies forecast to remain in place throughout the day into the overnight period, radiational cooling Saturday night should promote widespread lows in the 30s heading into Sunday morning. Largely southerly winds will allow for temperatures to rebound into the 70s Sunday afternoon, with perhaps slightly warmer temperatures possible in central Kansas thanks to more of a downslope wind component. High temperatures in the 70s and low 80s are expected Monday through Wednesday. Looking ahead to the latter half of next week, GFS/ECMWF/Canadian all highlight a mid/upper trough tracking eastward over the Desert Southwest into the Rockies and Plains. This feature may allow for another period of active weather as early as Wednesday, though to this point Thursday evening appears to have the greatest chances for showers and storms. Stay tuned as additional details come into focus. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1215 PM CDT Fri Apr 17 2026 A cold front is quickly moving southeast through Kansas early this afternoon. As of 17z this front was located from KHUT to KMHK and moving to the southeast at around 10kts. Behind the front, winds are switching around to the north and becoming gusty and remain gusty through the night. Ahead of this front, instability is increasing which will lead to strong to severe thunderstorms generally from KICT and points southeast. Thunderstorms that develop will produce very large hail, gusty and erratic winds, frequent lightning, and heavy rainfall which will reduce the visibility at times. Eventually a line of storms will develop and move to the southeast eventually clearing the southeast corner of Kansas by around midnight. Once the line of storms clears the area conditions will return to VFR with northerly winds slowly diminishing through the night. && .FIRE WEATHER... Issued at 1215 PM CDT Fri Apr 17 2026 Breezy north/northwest winds and dry conditions will support very high grassland fire danger this afternoon for areas west of Interstate 135. Very high grassland fire danger is forecast for the same areas during the afternoon hours on Monday, Wednesday, and Thursday. && .ICT WATCHES/WARNINGS/ADVISORIES... None. && DISCUSSION...JWK AVIATION...WI FIRE WEATHER...JWK
Hazardous weather outlook, Apr 17, 12:24 PM CDT, 1 hour 48 minutes before
Hazardous Weather Outlook National Weather Service Wichita KS 1224 PM CDT Fri Apr 17 2026 KSZ032-033-047>053-067>072-082-083-091>096-098>100-181730- 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- 1224 PM CDT Fri Apr 17 2026 This hazardous weather outlook is for portions of Central Kansas, South Central Kansas and Southeast Kansas. .DAY ONE...This Afternoon and Tonight Severe storms will be likely this afternoon and evening along a strong cold front. Storms are expected to first develop between 1 pm and 5 pm generally along a Marion, to Wichita, to Harper line and track off to the east. Storms will exit southeast Kansas between 10 pm and 1 am. Large hail and damaging winds will be possible with the stronger storms. In addition, a couple tornadoes will be possible, generally before 8 pm. Very high grassland fire danger is forecast for areas along and west of I-135 this afternoon due to gusty north winds. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Some frost will be possible Sunday morning for much of south central and southeast Kansas. Very high fire danger will return to areas along and west of Highway 14 for Monday, Wednesday and Thursday. This will be due to above normal temperatures and gusty south winds. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening primarily along and southeast of the Kansas Turnpike. && For a graphical version of this information, see our webpage at: https://www.weather.gov/erh/ghwo?wfo=ict
In the hours before
Local storm report, Apr 17, 2:03 PM CDT, 9 minutes before
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</html>The office that day
Everything else NWS Wichita, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 8:03 AM CDT | River Flood Warning | ICT | Labette, Neosho | 3 days |
| Apr 17, 8:03 AM CDT | River Flood Warning | ICT | Neosho | 58 hr |
| Apr 17, 8:03 AM CDT | River Flood Warning | ICT | Cherokee, Labette | 3 days |
| Apr 17, 1:53 PM CDT | Severe Thunderstorm Warning | ICT | Harvey, Sedgwick | 52 min |
| Apr 17, 2:09 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Marion | 51 min |
| Apr 17, 2:18 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Chase | 42 min |
| Apr 17, 2:22 PM CDT | Severe Thunderstorm Warning | ICT | Sedgwick, Sumner | 38 min |
| Apr 17, 2:44 PM CDT | Severe Thunderstorm Warning | ICT | Harvey, Sedgwick | 18 min |
| Apr 17, 2:46 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Chautauqua, Cowley, Elk, Greenwood | 59 min |
| Apr 17, 2:53 PM CDT | Severe Thunderstorm Warning | ICT | Sedgwick, Sumner | 67 min |
| Apr 17, 2:55 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Chase, Greenwood, Marion | 65 min |
| Apr 17, 3:27 PM CDT | Severe Thunderstorm Warning | ICT | Harper | 63 min |
| Apr 17, 3:39 PM CDT | Severe Thunderstorm Warning | ICT | Allen, Labette, Montgomery, Neosho, Wilson, Woodson | 66 min |
| Apr 17, 3:53 PM CDT | Severe Thunderstorm Warning | ICT | Harper, Sumner | 67 min |
| Apr 17, 3:56 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Cowley, Sedgwick | 64 min |
| Apr 17, 4:32 PM CDT | Severe Thunderstorm Warning | ICT | Neosho | 27 min |
| Apr 17, 4:57 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Cowley | 48 min |
| Apr 17, 5:04 PM CDT | Severe Thunderstorm Warning | ICT | Allen, Elk, Greenwood, Neosho, Wilson, Woodson | 56 min |
| Apr 17, 5:24 PM CDT | Severe Thunderstorm Warning | ICT | Elk, Greenwood | 33 min |
| Apr 17, 6:04 PM CDT | Severe Thunderstorm Warning | ICT | Cowley, Sumner | 56 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2026Every severe thunderstorm warning in 2026
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.