Alert archive / Kansas / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 326, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Jun 9, 2026, 12:48 AM CDT for Bates County, Cass County, Jackson County, Missouri; 5 counties in 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
- Jun 9, 2026, 12:48 AM CDT (05:48 UTC)
- Expired
- Jun 9, 2026, 1:30 AM 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, Linn County, KS, Miami County, KS, Wyandotte County, KS, Bates County, MO, Cass County, MO, Jackson County, MO
The radar
The Pleasant Hill radar (KEAX), 36 km from the middle of the area, began a volume at 05:51 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 |
|---|---|---|---|
| Jun 8, 11:49 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 5.8 hours before the alert went out and 89 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
- 2597 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 6:57 PM CDT, 5 hours 51 minutes earlier. Its key messages:
- * Potential for severe storms tonight, but there is a high amount of uncertainty in how event might evolve. Any storms that develop would be capable of heavy rainfall, along with the potential for damaging winds. * Clearing on Tuesday into Wednesday is expected to lead to very warm and muggy conditions. Heat indices in excess of 100 F are likely. * Severe storms are expected Wednesday into Thursday as front drops southeast across the region.
Area forecast discussion, Jun 8, 6:57 PM CDT, 5 hours 51 minutes before
Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
657 PM CDT Mon Jun 8 2026
.KEY MESSAGES...
* Potential for severe storms tonight, but there is a high amount of
uncertainty in how event might evolve. Any storms that develop
would be capable of heavy rainfall, along with the potential for
damaging winds.
* Clearing on Tuesday into Wednesday is expected to lead to very
warm and muggy conditions. Heat indices in excess of 100 F are
likely.
* Severe storms are expected Wednesday into Thursday as front
drops southeast across the region.
&&
.DISCUSSION...
Issued at 350 PM CDT Mon Jun 8 2026
Very active weather pattern expected to continue this week. Broad
low level warm air advection exists east of surface low across south
central KS. Fairly weakly capped environment across the region this
afternoon, and could see an isolated storm or two through the late
afternoon/early evening. Steep lapse rates in the 600-525 mb range
aiding in destabilization this afternoon with ~2000 J/kg of CAPE
across the region. While wind shear is relatively weak around 25
knots, could possibly get a brief strong storm through ample surface
heating late this afternoon into the evening hours, though there is
not much in the way of a lot of upper level support. Stratus across
eastern KS into central MO has led to
Weak short wave across north central KS as of 20Z is expected to
lead to the development of supercells across south central Nebraska.
These storms could grow upscale into an MCS and build southeast
along the thermal ridge. HRRR and RRFS have been been fairly
consistent with this ideal since the 12Z runs, while the
deterministic runs have really struggled coming up with a consistent
solution. The 18Z HRRR has since pivoted to developing supercells
across eastern KS this evening, and brings in remnants of a complex
on Tuesday morning. The low level jet is initially focused across
Oklahoma, but builds north in time across eastern KS into western MO
after 06Z Tuesday. 18Z sounding from TOP is moist with 1.7" of
precipitable water, and warm cloud depths are in the 13-14K foot
range. Point is, there is a quite a bit of uncertainty on how
things might evolve tonight, but potential for damaging winds, hail,
and heavy rainfall exists.
This uncertainty continues into Tuesday with the potential for low
clouds and lingering storms transitioning to very warm and muggy
conditions as upper level ridge . Depending on how quickly clouds
clear through the day, surface temperatures are expected to warm
into the upper 80s and potentially lower 90s F. With dew points well
into the 70s, heat indices are expected to warm into the upper 90s
to lower 100 F. Tried to concentrate the heat advisory in areas
that should see clearing earlier in the day allowing for better
insolation.
Air you can wear continues into Wednesday ahead of a cold front
approaching from the northwest. With increasing confidence, there
may be a need for heat headlines, especially with moisture pooling
ahead of the approaching front. Models have been inconsistent in the
timing of the front, but could see additional storms with the front
and are outlooked for severe potential Wednesday into Thursday.
Additional storms are possible on Saturday into Saturday night as
shortwave drops into the Northern Plains this weekend, with a
potential deepening surface reflection. As can be expected and with
models not handling the near term well, there is a wide variety of
solutions for the weekend.
&&
.AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/...
Issued at 657 PM CDT Mon Jun 8 2026
Largely VFR conditions were seen across the area early this
evening, with MVFR ceilings around the KC metro. The main focus
for tonight will be on a thunderstorm complex expected to move
through the western portions of the area around 06-10z.
Uncertainty exists on just how far north this complex will
extend, but confidence is pretty high for flight impacts around
the KC metro and points south. IFR conditions are likely under
heavy rainfall, with strong wind gusts around 40 knots,
possibly higher. There could be more thunderstorms behind this
first round, but that remains much more uncertain. Looking
towards Tuesday, dry conditions are expected, with strengthening
south-soutwesterly flow, gusting around 20 to 25 knots.
&&
.EAX WATCHES/WARNINGS/ADVISORIES...
MO...Flood Watch through Tuesday morning for MOZ028>033-037>040-
043>046-053-054.
Heat Advisory from noon to 10 PM CDT Tuesday for MOZ001>005-
011>014-020>022-028>031-037>040-043>046-053-054.
KS...Flood Watch through Tuesday morning for KSZ025-057-060-103>105.
Heat Advisory from noon to 10 PM CDT Tuesday for KSZ025-057-
060-102>105.
&&
DISCUSSION...BT
AVIATION...SchultzHazardous weather outlook, Jun 8, 5:05 AM CDT, 19 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Kansas City/Pleasant Hill MO 0505 AM CDT Mon Jun 08 2026 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-091005- 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 Mon Jun 08 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...Tuesday through Sunday. Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on potential weather hazards. .KEY MESSAGES... - Scattered showers and isolated thunderstorms continue overnight. Additional storm development is expected across southwest MO which could extend into west central MO along the HWY 18 corridor. - Hazardous heat is expected this week. Heat indices reach the 90s to upper 90s across west central MO today. Heat index values above 100F are expected Tuesday and Wednesday. - Additional rounds of showers and storms are anticipated
The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 1:25 AM CDT | Severe Thunderstorm Warning | EAX | Bates, Cass, Henry, Jackson, Johnson, Lafayette | 35 min |
| Jun 9, 1:37 AM CDT | Areal Flood Advisory | EAX | Clay, Jackson, Platte | 3 hr |
| Jun 9, 12:21 AM CDT | Severe Thunderstorm Warning | EAX | Johnson, Leavenworth, Linn, Miami, Wyandotte | 39 min |
| Jun 9, 12:52 AM CDT | Areal Flood Advisory | EAX | Johnson, Leavenworth, Wyandotte | 4 hr |
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.