Severe Thunderstorm Warning 49, NWS Cheyenne, WY

071 
WWUS55 KCYS 022302
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
502 PM MDT Tue Jun 2 2026

WYC009-027-022312-
/O.CAN.KCYS.SV.W.0049.000000T0000Z-260602T2330Z/
Niobrara WY-Converse WY-
502 PM MDT Tue Jun 2 2026

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL NIOBRARA AND
NORTHEASTERN CONVERSE COUNTIES IS CANCELLED...

The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
east central Wyoming.

&&

LAT...LON 4292 10515 4303 10535 4343 10509 4320 10466
TIME...MOT...LOC 2300Z 216DEG 29KT 4315 10507 

$$

Trudel

Area Forecast Discussion
National Weather Service Cheyenne WY
1246 PM MDT Tue Jun 2 2026

.KEY MESSAGES...

- There is a slight risk (level 2 of 5) of severe weather across
  the eastern high plains today. Large hail, severe wind, and an
  isolated tornado will be possible.

- The potential for a few afternoon and evening strong to severe
  thunderstorms will continue through the remainder of the
  work week.

- Temperatures will slowly warm to well above seasonal averages
  by the weekend as thunderstorm chances become more isolated.

&&

.SHORT TERM /THROUGH WEDNESDAY NIGHT/...
Issued at 1242 PM MDT Tue Jun 2 2026

Looking like another active day across the forecast area with
continued chances for severe thunderstorms this afternoon and
through the evening hours. Current mesoscale analysis from late this
morning shows the capping inversion has been virtually eroded across
most of the Nebraska panhandle and areas west of the Laramie Range.
The Interstate 25 corridor as well as Converse and Niobrara Counties
remain capped, but are expected to erode away any surface based CIN
within the next few hours. Healthy southerly flow, stronger than
what models originally suggested, have helped mix the atmosphere,
with daytime heating now helping prime the environment for severe
storms. Model soundings as well as mesoscale analysis show healthy
amounts of instability this afternoon, with MUCAPE values ranging
from about 1500 to 2000 J/kg for areas east of the Laramie Range.
Effective shear values are decent, and will be sufficient enough to
get supercells as well as large hail. Hi-Res guidance shows
initially discrete cells will transition to more of a disorganized
line by this evening. This line could produce damaging wind gusts as
storms become more outflow dominate. Cannot rule out tornadoes
in today's set up with rather high MLCAPE values for our area,
but higher LCLs may work to counteract this. Radar trends
already show shower and storm development over the high terrain
out west. Albany County also shows a ripe environment for severe
weather so cannot rule out severe storms in and around Laramie
this afternoon. Storms are also expected to form off a frontal
boundary that is progged to move across eastern Wyoming later
today. Greatest chance of severe storms in Wyoming will be
between 2 PM and 6 PM this afternoon, with severe storms
possible in Nebraska between 5 PM and 10 PM this evening.

Although severe weather chances are still possible on
Wednesday, it will be a bit of a break from storms compared to
the last few days. Weaker instability will create an environment
conducive to marginally severe storms. The further eastward
extent of the dryline modeled by the HRRR will also create a
smaller areal extent for storms to develop. Hi-Res guidance
shows the southern Nebraska panhandle as the most likely area
for severe storms as this is where the highest instability is.
Both severe hail and wind will be possible as both discrete
cells as well as storm clusters are forecast for Wednesday. Mid
to late afternoon is the most likely timing for storms with
storms not expected to stray to late into the evening hours.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
Issued at 1242 PM MDT Tue Jun 2 2026

Looking ahead to Thursday, another upper level shortwave trough
right on the heels of the departing primary low will move across the
northern Rockies. Recent model guidance has begun to pick up on lee
cyclogenesis near the area in advance of the approaching upper level
feature, but differ in its exact location. Exactly where this sets
up will help determine where the most favorable area for strong to
severe thunderstorms will develop. Currently, this appears most
likely along the Lusk to Chadron corridor in east central Wyoming
and into the northern Nebraska panhandle. This could also extend
into the Chadron to Sidney corridor. Both of these areas have the
highest confidence in dewpoints remaining high, whereas model
guidance has been trending towards a drier surface airmass along
and west of the I-25 corridor. Forcing will be provided by the
approaching upper level low with current convective parameters
appearing supporting of at least isolated strong to severe
thunderstorms Thursday afternoon and evening.

Storm chances will drop back somewhat for Friday as drier air pushes
eastward to encompass most of the forecast area. A deep Pacific
trough pushing into the northwest CONUS will amplify the downstream
ridge over the Rockies and Plains, pushing temperatures upward into
the weekend. Most areas will reach the 80s on Friday, with fairly
widespread 90s possible Saturday as the ridge axis shifts overhead.
700-mb temperatures peaking around +12 to +16C will be around the
climatological 90th percentile. Sunday's highs may drop slightly for
our western zones, but should be fairly similar to Saturday over the
High Plains, with widespread mid 80s to mid 90s. Current forecast
remain comfortably below daily record highs, but it will certainly
be a warm to hot few days.

While precipitation on Friday looks very isolated, moisture will
begin to slowly tick upwards again Saturday onward. Moisture will
improve aloft first, increasing on Saturday. This could lead to a
few isolated high-based showers and possibly a dry microburst
hazard, but this is fairly low confidence several days out. Low-
level moisture looks to recover Sunday into early next week, which
will then allow for higher chances for appreciable precipitation,
but also strong to severe thunderstorms. An early look from the
ECMWF ensemble suggests fairly potent instability and thus more
prevalent thunderstorm chances on Monday and Tuesday.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 1139 AM MDT Tue Jun 2 2026

Thunderstorms remain the primary aviation concern this afternoon
and evening. Strong southerly winds will continue into the
afternoon hours, but expect gusts to ease gradually.
Thunderstorms will develop in the next few hours and then move
off to the northeast through the early evening hours. Confidence
in direct impacts to each terminal is not high enough for
prevailing groups yet, but be ready for possible AMDs as storms
approach a terminal. The primary hazards will be frequent
lightning, gusty winds, brief downpours, and isolated large
hail.

Storms should depart the area by around 03z or so, though a few
showers may linger overnight. Late evening thunderstorms cannot
be ruled out, but the probability is fairly low. Southeast winds
will kick up again overnight over the High Plains, but expect
this to weaken Wednesday morning and begin to shift more
westerly at all terminals except SNY.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.

&&

SHORT TERM...SF
LONG TERM...MN
AVIATION...MN

Special Weather Statement
National Weather Service Cheyenne WY
139 PM MDT Tue Jun 2 2026

WYZ106-116>118-022015-
South Laramie Range WY-
Central Laramie Range and Southwest Platte County WY-
Central Laramie County WY-South Laramie Range Foothills WY-
139 PM MDT Tue Jun 2 2026

...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL ALBANY...
NORTHWESTERN LARAMIE AND SOUTHWESTERN PLATTE COUNTIES THROUGH 215 PM
MDT...

At 139 PM MDT, Doppler radar was tracking a strong thunderstorm
producing a landspout 12 miles north of Horse Creek, or 25 miles
northeast of Laramie, moving east 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.

Locations impacted include...
Horse Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
southeastern Wyoming.

&&

LAT...LON 4139 10544 4148 10547 4166 10529 4172 10499
      4140 10499
TIME...MOT...LOC 1939Z 255DEG 11KT 4158 10525

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

Natoli

Preliminary Local Storm Report
National Weather Service Cheyenne WY
153 PM MDT Tue Jun 2 2026

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

0130 PM     Tornado          12 NNW Horse Creek      41.56N 105.31W
06/02/2026                   Albany             WY   Public

            Multiple reports of a funnel cloud with a
            ground circulation.

&&

Preliminary Local Storm Report
National Weather Service Cheyenne WY
157 PM MDT Tue Jun 2 2026

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

0154 PM     Tornado          11 NNW Horse Creek      41.54N 105.30W
06/02/2026                   Albany             WY   Public

            Multiple reports of another rope-like,
            persistent tornado. Exact location is
            estimated.

&&

Preliminary Local Storm Report
National Weather Service Cheyenne WY
413 PM MDT Tue Jun 2 2026

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

0350 PM     Funnel Cloud     9 WSW Lost Springs      42.71N 105.08W
06/02/2026                   Converse           WY   Storm Chaser

&&