Alert archive / Kansas / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 461, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Aug 18, 2026, 10:33 PM CDT for Platte County, Missouri; Johnson County, Leavenworth County, Wyandotte County, Kansas. It was in force for 42 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
- Aug 18, 2026, 10:33 PM CDT (03:33 UTC)
- Expired
- Aug 18, 2026, 11:15 PM CDT
- In force
- 42 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Johnson County, KS, Leavenworth County, KS, Wyandotte County, KS, Platte County, MO
The radar
The Pleasant Hill radar (KEAX), 63 km from the middle of the area, began a volume at 03:37 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 |
|---|---|---|---|
| Aug 18, 9:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 3.6 hours before the alert went out and 266 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
- 1335 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 2050 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.8
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 Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 18, 6:38 PM CDT, 3 hours 55 minutes earlier.
Area forecast discussion, Aug 18, 6:38 PM CDT, 3 hours 55 minutes before
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</html>Hazardous weather outlook, Aug 18, 5:05 AM CDT, 17 hours 28 minutes before
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 0505 AM CDT Tue Aug 18 2026 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-191005- Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS- Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler- Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton- Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton- Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis- Cooper-Bates-Henry- 0505 AM CDT Tue Aug 18 2026 This hazardous weather outlook is for northwest...north central and west central Missouri...as well as extreme eastern Kansas. .DAY ONE...Through tonight. Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .KEY MESSAGES... - Severe thunderstorms are possible today and tonight, with the most likely timing from late this evening through the overnight hours. - Near-normal temperatures likely Wednesday into early next week with low precipitation chances, mainly early next week.
The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 10:10 PM CDT | Severe Thunderstorm Warning | EAX | Platte | 36 min |
| Aug 18, 11:09 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Platte | 36 min |
| Aug 19, 12:38 AM CDT | Severe Thunderstorm Warning | EAX | Platte | 37 min |
| Aug 19, 1:00 AM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Platte | 45 min |
| Aug 19, 1:12 AM CDT | Severe Thunderstorm Warning | EAX | Platte | 23 min |
| Aug 19, 1:26 AM CDT | Areal Flood Advisory | EAX | Clay, Jackson, Platte | 3 hr |
| Aug 19, 1:40 AM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Platte | 50 min |
| Aug 19, 3:19 AM CDT | Flash Flood Warning | EAX | Clay, Jackson, Platte | 4 hr |
| Aug 19, 4:29 AM CDT | Special Weather Statement | EAX | Johnson | 31 min |
| Aug 19, 2:19 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 41 min |
| Aug 19, 3:05 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 55 min |
| Aug 19, 3:39 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Holt, Nodaway | 66 min |
| Aug 19, 3:58 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Nodaway | 21 min |
| Aug 19, 4:18 PM CDT | Severe Thunderstorm Warning | EAX | Andrew, Buchanan, Holt, Nodaway | 42 min |
| Aug 19, 4:56 PM CDT | Severe Thunderstorm Warning | EAX | Andrew, Buchanan, Clinton, DeKalb, Gentry, Nodaway | 49 min |
| Aug 19, 5:07 PM CDT | Special Weather Statement | EAX | Buchanan, Clinton, Platte | 38 min |
| Aug 19, 5:27 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Caldwell, Clinton, Daviess, DeKalb, Gentry and 2 more | 48 min |
| Aug 19, 5:53 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Carroll, Clinton, Daviess, Livingston, Ray | 52 min |
| Aug 19, 6:28 PM CDT | Special Weather Statement | EAX | Livingston | 32 min |
| Aug 18, 9:37 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 38 min |
| Aug 19, 4:35 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 25 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2026Severe Thunderstorm Warnings in Missouri, 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.