Tornado Warning 2, NWS Cheyenne, WY

983 
WWUS55 KCYS 302240
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
440 PM MDT Sat May 30 2026

NEC105-302315-
/O.CON.KCYS.TO.W.0002.000000T0000Z-260530T2315Z/
Kimball NE-
440 PM MDT Sat May 30 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR SOUTH
CENTRAL KIMBALL COUNTY...

At 440 PM MDT, a severe thunderstorm capable of producing a tornado
was located 8 miles south of Oliver Reservoir, or 13 miles southwest
of Kimball, and is nearly stationary.

HAZARD...Tornado and half dollar size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
south central Kimball County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4107 10383 4110 10389 4117 10385 4112 10375
TIME...MOT...LOC 2240Z 203DEG 2KT 4110 10385 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN

$$

Mose

697 
WWUS55 KCYS 302253
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
453 PM MDT Sat May 30 2026

NEC105-302315-
/O.CON.KCYS.TO.W.0002.000000T0000Z-260530T2315Z/
Kimball NE-
453 PM MDT Sat May 30 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR SOUTH
CENTRAL KIMBALL COUNTY...

At 453 PM MDT, a severe thunderstorm capable of producing a tornado
was located 7 miles south of Oliver Reservoir, or 11 miles southwest
of Kimball, moving northeast at 10 mph.

HAZARD...Tornado and ping pong ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
south central Kimball County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4109 10388 4115 10381 4112 10375 4107 10383
TIME...MOT...LOC 2253Z 217DEG 7KT 4112 10383 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

Mose

224 
WWUS55 KCYS 302257
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
457 PM MDT Sat May 30 2026

NEC105-302315-
/O.CON.KCYS.TO.W.0002.000000T0000Z-260530T2315Z/
Kimball NE-
457 PM MDT Sat May 30 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR SOUTH
CENTRAL KIMBALL COUNTY...

At 457 PM MDT, a confirmed tornado was located near Oliver Reservoir,
or 11 miles southwest of Kimball, moving northeast at 10 mph.

HAZARD...Damaging tornado and ping pong ball size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
south central Kimball County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4109 10388 4115 10381 4112 10375 4107 10383
TIME...MOT...LOC 2257Z 217DEG 7KT 4113 10382 

TORNADO...OBSERVED
MAX HAIL SIZE...1.50 IN

$$

Mose

218 
WWUS55 KCYS 302309
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
509 PM MDT Sat May 30 2026

NEC105-302319-
/O.EXP.KCYS.TO.W.0002.000000T0000Z-260530T2315Z/
Kimball NE-
509 PM MDT Sat May 30 2026

...THE TORNADO WARNING FOR SOUTH CENTRAL KIMBALL COUNTY WILL EXPIRE
AT 515 PM MDT...

The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of Nebraska.

&&

LAT...LON 4109 10388 4115 10381 4112 10375 4107 10383
TIME...MOT...LOC 2309Z 217DEG 7KT 4115 10380 

$$

Mose

Area Forecast Discussion
National Weather Service Cheyenne WY
332 PM MDT Sat May 30 2026

.KEY MESSAGES...

- An unsettled weather pattern will continue this weekend with
  daily chances for afternoon/evening showers and thunderstorms
  as a potent upper level disturbance moves northeast over the
  area.

- Strong to severe thunderstorms will develop this afternoon for
  areas east of the I-25 corridor. If severe thunderstorms
  develop all hazards are possible; large hail, damaging winds,
  and tornadoes are possible.

&&

.SHORT TERM /THROUGH MONDAY/...
Issued at 215 PM MDT Sat May 30 2026

Primary forecast concern over the next 48 hours is the potential
for severe thunderstorms over far eastern Wyoming and western
Nebraska this afternoon through late this evening. Potent upper
level low clearly seen on IR and Visible Satellite over south
central Wyoming is forecast to become a negatively tilted open
wave trough over the next several hours. This trough axis will
accelerate northward over eastern Wyoming and western Nebraska
through early this evening. Current surface observations show
ample moisture east of a line from Lusk Pine Bluffs,
paralleling the Wyoming/Nebraska border. Activity has already
started to form across far east central Wyoming and the northern
Nebraska Panhandle where low clouds have dissipated earlier in
the day. Further south, expect another round of thunderstorms to
push across far southeast Wyoming and the southern Nebraska
panhandle, which are now starting to form south of the
Wyoming/Colorado border at this hour. This area will likely
become our primary focus as it moves northeast into this
evening. Upper level analysis shows strong upper level
diffluence increasing rapidly late this afternoon along and
east of I-25 as the base of the trough/vort max lifts northeast.
Expect multicells and isolated supercells initially, with
activity growing upscale once the vort max lifts north. Overall,
expect a large hail threat (1.00-2.00 inches) and maybe an
isolated tornado becoming a straight line wind threat through
the evening hours. Could see some gusts up to 75 MPH with the
strongest lines. A Severe Thunderstorm Watch has been issued
mainly for areas east of Interstate 25 until 900 PM late this
evening. Although cells will move north and northeast, expect
any lines of thunderstorms to propagate eastward into this
evening.

Further west, moisture is much more limited with dewpoints
already dropping into the 30s this afternoon. Still expect
isolated to widely scattered thunderstorms with a gusty wind
threat into this evening before the cooler air, associated with
the negatively tilted trough, moves east into central Wyoming.
Once the trough lifts northeast, westerly winds will increase
behind it with most models showing 700mb winds around 50 knots.
In-house wind guidance shows 55% to 65% probability of high
wind criteria for Arlington/Elk Mountain, with probabilities
between 30% to 45% for Bordeaux and the I-80 Summit/foothills.
With shallow convection over the Arlington area, and a
possibility for gusty winds, decided to upgrade the High Wind
Watch to a Warning and start it earlier (400 PM) in the day.

Thunderstorm activity should push east of our area by midnight,
with left over showers before sunrise Sunday. Can't rule out
some low clouds and patchy fog in areas that received heavy
rain, but westerly winds will quickly increase towards morning
limiting any fog threat. Other than High Wind concerns in and
near the wind prone areas and breezy conditions elsewhere, quiet
weather expected into Sunday with any thunderstorm activity
staying well to the north of I-80 towards Douglas and Lusk. Not
as cool with a slight warming trending...and high temperatures
in the upper 60s (west of I-25) to low/mid 80s for western
Nebraska.

For Monday, showers and thunderstorms should return to the high
plains as surface winds shift into the south and southeast.
Further west, another broad upper level trough will brush the
northern Great Basin region and move into Wyoming later in the
day. May see some strong to marginally severe thunderstorms with
0-6km shear around 35 knots and some low to midlevel
instability.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
Issued at 231 PM MDT Fri May 29 2026

The long term will remain as unsettled as the short term with near
daily chances of precipitation through at least mid-week. With
the upper-level trough responsible for Saturday's storm expected
to eject northeastward out if the area Sunday, precipitation
chances on Sunday will be rather slim. Lingering showers could
be possible for the northern Wyoming and Nebraska zones of the
forecast area as the system ejects into the Dakotas, but even
these chances look rather slim.

Precipitation chances will increase for the start of the work week
as the upper-level trough/low begins to retrograde back towards the
northwest. The rough location of the low over the Montana/Canada
border, will allow the CWA to once again tap into moisture from the
Gulf. Moisture-rich mid-level southerly flow will usher in the
necessary humidity to fuel storm develop during the afternoon and
evening. Lift will come in the form of vorticity maxes streaming
through the area from the trough to the north, as well as another
trough the enters the picture during the middle of next week. At
this point, global models seem fairly consistent on showing daily
storm chances east of the Laramie Range Monday through Thursday. A
quick look at model soundings for areas east of the Laramie Range
show moderate amounts of CAPE each afternoon as well as decent shear
most days. As a result, severe weather cannot be ruled out each
afternoon.

&&

.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/...
Issued at 1210 PM MDT Sat May 30 2026

Potent upper level low/trough will lift northeast across the area
today and tonight. Numerous showers and scattered thunderstorms will
develop across the mountains and move east into the high plains this
evening. Thunderstorms will likely become strong to severe for the
western Nebraska terminals and contain strong gusty winds, hail, and
brief very heavy rainfall.

HAZARDS/WEATHER TRENDS: VFR conditions should prevail at KRWL and
KLAR, although some periods of MVFR CIGS can't be ruled out tonight
with some rain shower activity. Further east, showers and
thunderstorms are expected to develop over the next few hours and
track northeast. There is a chance of IFR conditions with these
thunderstorms (15% to 25%), but impacts should be less than 2 hours.
Also, the terminals that see heavy rainfall amounts may see some fog
and/or low CIGS later this evening and into tonight. However
confidence is low (prob and coverage), so will keep out of the TAF
for now.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...

WY...High Wind Watch from 9 PM MDT this evening through Sunday
     afternoon for WYZ106-116-117.
     High Wind Warning until 9 AM MDT Sunday for WYZ110.

NE...None.

&&

SHORT TERM...TJT
LONG TERM...NB
AVIATION...TJT

Preliminary Local Storm Report
National Weather Service Cheyenne WY
347 PM MDT Sat May 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     Flash Flood      Chadron                 42.83N 103.00W
05/30/2026                   Dawes              NE   Broadcast Media

            Report from radio that some cars were
            underwater. 2 inches of rain reported.
            Pictures from social media showed
            accumulating hail in areas of flooding.

&&

NSB

Special Weather Statement
National Weather Service Cheyenne WY
354 PM MDT Sat May 30 2026

NEZ020-054-WYZ119-302230-
Kimball NE-Banner NE-East Laramie County WY-
354 PM MDT Sat May 30 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN KIMBALL...
SOUTHWESTERN BANNER AND EASTERN LARAMIE COUNTIES THROUGH 430 PM
MDT...

At 354 PM MDT, Doppler radar was tracking a strong thunderstorm
capable of producing a landspout near Bushnell, or 15 miles west of
Kimball, moving northeast at 10 mph.

HAZARD...Landspouts, wind gusts up to 40 mph, and half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible. Gusty winds
         could knock down tree limbs and blow around unsecured
         objects.

This storm will remain over mainly rural areas of northwestern
Kimball, southwestern Banner and eastern Laramie Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of Nebraska...and southeastern Wyoming.

&&

LAT...LON 4123 10396 4134 10409 4147 10390 4129 10367
TIME...MOT...LOC 2154Z 222DEG 9KT 4129 10395

LANDSPOUT...POSSIBLE
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

Vasquez

Special Weather Statement
National Weather Service Cheyenne WY
359 PM MDT Sat May 30 2026

NEZ054-WYZ119-302230-
Kimball NE-East Laramie County WY-
359 PM MDT Sat May 30 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN KIMBALL AND
SOUTHEASTERN LARAMIE COUNTIES THROUGH 430 PM MDT...

At 359 PM MDT, Doppler radar was tracking a strong thunderstorm
capable of producing a landspout near Pine Bluffs Municipal Airport,
or 26 miles southwest of Kimball, moving east at 15 mph.

HAZARD...Landspouts, wind gusts up to 50 mph, and half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible. Gusty winds
         could knock down tree limbs and blow around unsecured
         objects.

This storm will remain over mainly rural areas of southwestern
Kimball and southeastern Laramie Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of Nebraska...and southeastern Wyoming.

&&

LAT...LON 4106 10416 4110 10413 4110 10401 4100 10408
TIME...MOT...LOC 2159Z 288DEG 15KT 4107 10412

LANDSPOUT...POSSIBLE
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

Mose

Preliminary Local Storm Report
National Weather Service Cheyenne WY
415 PM MDT Sat May 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0411 PM     Funnel Cloud     7 SSW Bushnell          41.15N 103.95W
05/30/2026                   Kimball            NE   Law Enforcement

            Kimball County Dispatch reported a funnel
            cloud beneath a wall cloud that ended up
            becoming rain-wrapped.

&&

NSB

Special Weather Statement
National Weather Service Cheyenne WY
418 PM MDT Sat May 30 2026

NEZ020-054-WYZ119-302245-
Kimball NE-Banner NE-East Laramie County WY-
418 PM MDT Sat May 30 2026

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN KIMBALL...
SOUTHWESTERN BANNER AND NORTHEASTERN LARAMIE COUNTIES THROUGH 445 PM
MDT...

At 418 PM MDT, Doppler radar was tracking a cluster of strong
thunderstorms capable of producing a landspout near Albin, or 26
miles west of Kimball, moving northwest at 10 mph.

HAZARD...Landspouts, wind gusts up to 50 mph, and half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible. Gusty winds
         could knock down tree limbs and blow around unsecured
         objects.

Locations impacted include...
Albin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
the Panhandle of Nebraska...and southeastern Wyoming.

&&

LAT...LON 4123 10395 4133 10425 4156 10424 4150 10378
TIME...MOT...LOC 2218Z 119DEG 7KT 4134 10414

LANDSPOUT...POSSIBLE
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

Vasquez

Preliminary Local Storm Report
National Weather Service Cheyenne WY
423 PM MDT Sat May 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0422 PM     Tstm Wnd Gst     5 W Pine Bluffs         41.18N 104.17W
05/30/2026  M45 MPH          Laramie            WY   ASOS

            Pine Bluffs ASOS reported 45 mph gust.

&&

NSB