Alert archive / Wyoming / Snow Squall Warnings in 2025
Snow Squall Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this snow squall warning at Dec 17, 2025, 5:22 PM MST for Albany County, Laramie County, Wyoming. It was in force for 53 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Dec 17, 2025, 5:22 PM MST (00:22 UTC)
- Expired
- Dec 17, 2025, 6:15 PM MST
- In force
- 53 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Albany County, WY, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 46 km from the middle of the area, began a volume at 00:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 17, 5:26 PM MST | NON-TSTM WND GST 60 | Pumpkin Vine, WY | Mesonet station KPUM Pumpkin Vine (WYDOT). |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 00:00Z, 0.4 hours before the alert went out and 325 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2773 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
445
WWUS55 KCYS 180022
SQWCYS
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Cheyenne WY
522 PM MST Wed Dec 17 2025
WYC001-021-180115-
/O.NEW.KCYS.SQ.W.0013.251218T0022Z-251218T0115Z/
Albany WY-Laramie WY-
522 PM MST Wed Dec 17 2025
The National Weather Service in Cheyenne has issued a
* Snow Squall Warning for...
Southeastern Albany County in southeastern Wyoming...
Southwestern Laramie County in southeastern Wyoming...
* Until 615 PM MST.
* At 521 PM MST, a dangerous snow squall was located along a line
extending from near Federal to Ames Monument, moving east at 30
mph.
HAZARD...Flash freeze on roads. Intense bursts of heavy snow.
Gusty winds leading to blowing snow and visibility
rapidly falling to less than one-quarter mile. Wind gusts
up to 70 mph could knock down tree limbs and blow around
unsecured objects.
SOURCE...Radar and webcams.
IMPACT...Travel will become difficult and potentially dangerous
within minutes.
This includes Interstate 80 in Wyoming between mile markers 319 and
344.
Locations impacted include...
Table Mountain Ranches, Willadsen Estates, Tie City Campground,
Granite Canon, Harriman Heights, Vedauwoo, Tie Siding, Crystal Lake
Reservoir, Pumpkin Vine, Vedauwoo Campground, Buford, North Crow
Campground, Granite Springs Reservoir, Ames Monument, Curt Gowdy
State Park, Pine Grove Estates, Yellow Pine Campground, Granite
Springs Retreat, and Cheyenne Pass.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Wet roadways will quickly freeze. Black ice will cause roads,
bridges, and overpasses to become slick and dangerous. Slow down and
be prepared for a sudden loss of traction.
Slow Down! Rapid changes in visibility and road conditions are
expected with this dangerous snow squall. Be alert for sudden
whiteout conditions.
&&
LAT...LON 4136 10548 4132 10514 4100 10512 4100 10555
TIME...MOT...LOC 0021Z 291DEG 27KT 4126 10515 4113 10542
SNOW SQUALL...OBSERVED
$$
Natoli1 follow-up statement
271 WWUS55 KCYS 180124 SQWCYS Snow Squall Warning National Weather Service Cheyenne WY 624 PM MST Wed Dec 17 2025 WYC001-021-180133- /O.EXP.KCYS.SQ.W.0013.000000T0000Z-251218T0115Z/ Albany WY-Laramie WY- 624 PM MST Wed Dec 17 2025 ...THE SNOW SQUALL WARNING FOR SOUTHEASTERN ALBANY AND SOUTHWESTERN LARAMIE COUNTIES HAS EXPIRED... The snow squall that prompted the warning has exited the area. Therefore, the snow squall warning has been allowed to expire. Roads will remain slick and hazardous due to icy conditions. && LAT...LON 4136 10548 4132 10514 4100 10512 4100 10555 TIME...MOT...LOC 0123Z 291DEG 27KT 4110 10459 4097 10486 $$ Natoli
What forecasters said that day
The local office's own words before this snow squall warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this snow squall warning went out at Dec 17, 4:58 PM MST, 24 minutes earlier. Its key messages:
- Widespread strong to locally damaging winds will turn northwest this evening and spread over the High Plains through Thursday morning.
- A cold front sweeping through the area will bring rain and snow showers and possible travel impacts along and west of the Laramie Range.
- Another significant wind event is expected Thursday night into Friday, possibly lingering into early Saturday. Wind gusts up to 90 mph will be possible once again along portions of the I-25 corridor with widespread 60 to 80 mph gusts elsewhere.
- Elevated to near critical fire weather conditions will continue through Friday. Grassland wildfires will spread rapidly in dry and very windy conditions.
Area forecast discussion, Dec 17, 4:58 PM MST, 24 minutes before
Area Forecast Discussion
National Weather Service Cheyenne WY
458 PM MST Wed Dec 17 2025
.KEY MESSAGES...
- Widespread strong to locally damaging winds will turn
northwest this evening and spread over the High Plains
through Thursday morning.
- A cold front sweeping through the area will bring rain and
snow showers and possible travel impacts along and west of the
Laramie Range.
- Another significant wind event is expected Thursday night into
Friday, possibly lingering into early Saturday. Wind gusts up
to 90 mph will be possible once again along portions of the
I-25 corridor with widespread 60 to 80 mph gusts elsewhere.
- Elevated to near critical fire weather conditions will
continue through Friday. Grassland wildfires will spread
rapidly in dry and very windy conditions.
&&
.SHORT TERM /THROUGH FRIDAY/...
Issued at 430 PM MST Wed Dec 17 2025
Extremely strong winds continue across the area this afternoon. We
observed significant mountain wave breaking along the I-25 corridor
earlier today, culminating in multiple measured wind gusts in excess
of 90 mph along the interstate, and a maximum of 112 mph in the
foothills of the northern Laramie range. Gradients are peaking now
and will likely begin to decline over the next few hours as the
strong surface low analyzed at 985-mb currently in western South
Dakota begins to rapidly move eastward. The cold front is beginning
to encroach on our area, trailing to the southwest out of the
aforementioned surface low. Considerable instability is present
along this boundary, such that we have observed numerous lightning
strikes along the strong band of frontogenesis moving into the area.
This will progress eastward very quickly, with the best forcing
departing the area by around 7PM. We will be monitoring the
potential for snow squalls in Carbon and Albany county over the next
1-2 hours as this feature moves through the area.
Behind the front this evening, we will get a break from the
excessively strong winds (75+ mph), but expect winds to remain
strong and gusty over most of the area, but turning more northwest
especially over the High Plains. Widespread gusts of 50 to 65 mph
with isolated gusts to 75 mph will continue in the northwest flow
overnight and into Thursday morning as temperatures drop. Single
digit wind chills will be widespread by daybreak Thursday! High Wind
Warnings were extended until 11AM for all areas along and east of I-
25, while those to the west should be able to drop off at midnight
(except the wind prone areas). This phase of the event is associated
with a sting jet wrapping around the backside of the departing upper
level low. The best forcing will depart mid morning, and we should
see winds gradually decreasing throughout the day.
There will be little rest for the wind weary in our area, as another
event is increasingly likely to follow right on the heels of this
event. The upper level ridge will amplify and expand eastward
Thursday night into Friday while another upper level low races into
the Pacific northwest. This will support another round of deep lee
cyclogenesis over northern Montana or southern Alberta. A surface
trough will trail southward along the front range of the Rockies,
causing the MSLP gradient to climb once again as early as sunset
Thursday. Winds will return first to the wind prone areas, then
spread into adjacent areas of Carbon/Albany counties during the
evening, and finally into the I-25 corridor after midnight. At first
glance, Friday's event looks to have quite a bit in common with
today's wind event. Low level height and MSLP gradients climb back
up to impressive heights, maximizing Friday morning. 700-mb winds
are even stronger than today's event, with LREF mean 700-mb winds
exceeding 70 knots over the entire I-25 corridor for most of Friday
morning. While there is variability in timing, most models show a
region of 85+ knot 700-mb winds over the Laramie Range at some point
during this event. In addition, models show a fairly potent
inversion developing between 600 and 650-mb. This is slightly higher
than the inversion height in today's setup, and a little bit above
mountain top height for the Laramie Range. This reduces confidence
in reaching the 90+ mph gusts again, but the even stronger flow
aloft suggests that overall Friday's event may be of similar
magnitude to today's. That being said, a widespread high wind event
is a near guarantee once again, with wind gusts of 75+ mph expected
in the wind prone areas. The primary uncertainties remaining are
whether we will be able to realize the potential for 90 to 100 mph
winds in the I-25 corridor once again, and how far east of I-25 the
strong winds will spread during the day on Friday. For now, another
High Wind Watch has been issued for most of southeast Wyoming along
and west of I-25.
In addition to the continued strong winds, fire weather will be a
concern through at least Friday. Even though temperatures are
expected to drop tonight, much drier air will move in with it,
leading to lower RH tomorrow compared to today. As temperatures warm
Friday, RH will drop further, with current expectations for RH
between 15 and 20% over much of the High Plains midday Friday.
Combined with extremely strong winds especially in southeast
Wyoming and parched, dormant grasses, expect to find significant
control issues for any grassland wildfires that are sparked
over the next few days.
&&
.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
Issued at 430 PM MST Wed Dec 17 2025
A broad ridge will be the dominate pattern for the
long term. Friday night into Saturday, An Alberta clipper will move
across the US/Canada border compressing the pressure gradient
against our broad ridge. This in turn will sustain our 700mb jet
into the 60 to 70kts range. Concurrently the global model omega
fields are still showing maxed out downward omegas indicative of
another high wind event continuing through the overnight period. Our
in house algorithm also agrees as it gives a 75 to 80 percent prob
of achieving a high wind criteria. The high wind forecast gets a
little tricky through the weekend as there is a little bit of timing
disagreement with the arrival of the next wave between the global
models. To add to the uncertainty, the ensemble cluster analysis
depicted about equal chances for the GFS solution of a more
progressive system limiting the lull in high winds Saturday into
Sunday, and the Euro delayed solution that has the wave arriving
about late Sunday night into Monday morning. Behind this wave the
700mb jet looks to be around 55 to 60kts which would be enough to
achieve high criteria. So depending on the timing of this wave we
could see a lull in high winds Saturday afternoon through Sunday
morning. The global omega fields have some downward motion but the
700mb jet isn't portrayed as having sustained winds of 55kts or
higher during that time. But to add some confidence in the lull in
high winds. Our in-house algorithm shows higher confidence with 40
to 60 percent probs of elevated winds as opposed to winds that meet
the high wind criteria. After the open wave moves through the winds
on the backside look currently more elevated with the 700mb jet
being between 40-55kts. So the winds look to remain gusty through
the start of the work week at the very least. Temperatures on the
other hand look to remain in the high 50's to low 60's throughout
the long term as this ridge is forecasted to remain anchored over
the West half of the United States. Overnight temperatures will drop
into the high twenties Saturday night making it the coldest night as
the rest of the forecasted temperatures look to be in the 30's
possibly 40's through Christmas day.
&&
.AVIATION /00Z TAFS THROUGH 00Z FRIDAY/...
Issued at 458 PM MST Wed Dec 17 2025
MVFR to VFR conditions through the TAF period for the Wyoming
terminals and VFR conditions are expected for the Nebraska
Terminals. Winds are expected to remain strong and gusty through
the TAF period for the Wyoming terminals, however after 20z the
winds will start winding down for the Nebraska terminals for a
brief lull. The rain should start to dissipate as it moves
easterly past KCYS. KCYS may see some brief showers but
shouldn't be anything measurable if it does reach the ground.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Warning until 11 AM MST Thursday for WYZ102-106>108-
110-116>119.
High Wind Warning until midnight MST tonight for WYZ101-
103>105-109-113-115.
High Wind Watch from Thursday evening through late Friday
night for WYZ101-107-118.
High Wind Watch from Thursday evening through late Friday
night for WYZ103-105-106-109-113-115-117.
High Wind Watch from Thursday afternoon through Saturday
morning for WYZ104-110-116.
Winter Weather Advisory until 6 PM MST this evening for WYZ112-
114.
NE...High Wind Warning until 11 AM MST Thursday for NEZ002-003-
019>021-054-055-095-096.
&&
SHORT TERM...MN
LONG TERM...MM
AVIATION...MMHazardous weather outlook, Dec 17, 3:52 AM MST, 13 hours 30 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 352 AM MST Wed Dec 17 2025 NEZ002-003-019>021-054-055-095-096-WYZ101>119-181100- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-Niobrara County- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- North Snowy Range Foothills-Southwest Carbon County- Sierra Madre Range-Upper North Platte River Basin-Snowy Range- Laramie Valley-South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- 352 AM MST Wed Dec 17 2025 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT - High Wind Warnings have been issued for most of southeast Wyoming and the Nebraska Panhandle as widespread wind gusts of 60-80 mph are expected, with some stronger gusts of 85-90 mph possible primarily in western Platte County. - Winter Weather Advisories have been issued for the Snowy and Sierra-Madre ranges for moderate snowfall amounts of 5-10 inches. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY - High Wind Warnings continue into Thursday with a brief respite expected before another round of high wind products will be likely later Thursday through most of Friday. - Elevated Fire Weather concerns expected primarily for the high plains as lowered RH values occur alongside expected high winds. .Spotter information statement... Spotter activation will not be needed.
In the hours before
Local storm report, Dec 17, 3:17 PM MST, 2 hours 5 minutes before
Preliminary Local Storm Report
National Weather Service Cheyenne WY
317 PM MST Wed Dec 17 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1205 PM Non-Tstm Wnd Gst Fort Laramie 42.21N 104.52W
12/17/2025 M84 MPH Goshen WY Trained Spotter
0146 PM Non-Tstm Wnd Gst 1 S Glenrock 42.84N 105.86W
12/17/2025 M62 MPH Converse WY Mesonet
Mesonet station KDRC 1.4 S Glenrock (WYDOT).
0147 PM Non-Tstm Wnd Gst 1 SSW Warren Af Base 41.13N 104.87W
12/17/2025 M68 MPH Laramie WY AWOS
AWOS station KFEW FE Warren AFB - FEW.
0157 PM Non-Tstm Wnd Gst 1 NW Cheyenne 41.15N 104.80W
12/17/2025 M64 MPH Laramie WY ASOS
ASOS station KCYS Cheyenne Airport - Cys.
0159 PM Non-Tstm Wnd Gst 3 N Douglas 42.80N 105.38W
12/17/2025 M72 MPH Converse WY ASOS
ASOS station KDGW Douglas Airport - Dgw.
0200 PM Non-Tstm Wnd Gst 2 E Torrington 42.07N 104.15W
12/17/2025 M59 MPH Goshen WY ASOS
ASOS station KTOR Torrington Airport - Tor.
0200 PM Non-Tstm Wnd Gst 5 WSW Douglas 42.72N 105.49W
12/17/2025 M60 MPH Converse WY Mesonet
Mesonet station DW7426 Douglas.
0200 PM Non-Tstm Wnd Gst 6 S Douglas 42.67N 105.40W
12/17/2025 M64 MPH Converse WY Mesonet
Mesonet station EW6313 Douglas.
0206 PM Non-Tstm Wnd Gst 6 SW South Greeley High 41.05N 104.89W
12/17/2025 M58 MPH Laramie WY Mesonet
Mesonet station KWYH 6.5 N Natural Fort
(WYDOT).
0206 PM Non-Tstm Wnd Gst 8 S Sibley Peak 42.32N 105.05W
12/17/2025 M67 MPH Platte WY Mesonet
Mesonet station WY1 8.4 S Sibley Peak
(WYDOT).
0206 PM Non-Tstm Wnd Gst 8 NNW Glendo 42.60N 105.10W
12/17/2025 M71 MPH Platte WY Mesonet
Mesonet station WY56 I25 Us26 Us87 - Platte
Converse.
0208 PM Non-Tstm Wnd Gst 6 NW Hartville 42.39N 104.81W
12/17/2025 M74 MPH Platte WY Mesonet
Mesonet station GNRW4 6 NW Hartville -
Guernsey.
0210 PM Non-Tstm Wnd Gst 2 NNE Esterbrook 42.44N 105.35W
12/17/2025 M66 MPH Converse WY Mesonet
Mesonet station PC248 Esterbrook.
0212 PM Non-Tstm Wnd Gst 5 NW Arlington 41.64N 106.29W
12/17/2025 M64 MPH Carbon WY Mesonet
Mesonet station WY21 5.5 NW Arlington
(WYDOT).
0216 PM Non-Tstm Wnd Gst Vedauwoo 41.16N 105.40W
12/17/2025 M59 MPH Albany WY Mesonet
Mesonet station KVDW Vedauwoo (WYDOT).
0216 PM Non-Tstm Wnd Gst 3 NW Arlington 41.62N 106.24W
12/17/2025 M75 MPH Carbon WY Mesonet
Mesonet station WY22 2.7 NW Arlington
(WYDOT).
0222 PM Non-Tstm Wnd Gst 3 ESE Elk Mountain 41.67N 106.37W
12/17/2025 M60 MPH Carbon WY Mesonet
Mesonet station WY20 2.5 SE Elk Mountain
(WYDOT).
0222 PM Non-Tstm Wnd Gst 2 E Arlington 41.59N 106.18W
12/17/2025 M73 MPH Carbon WY Mesonet
Mesonet station WY23 1.6 E Arlington
(WYDOT).
0225 PM Non-Tstm Wnd Gst 7 E Buford 41.10N 105.17W
12/17/2025 M63 MPH Laramie WY Mesonet
Mesonet station DVI09204 DVI75422.
0232 PM Non-Tstm Wnd Gst 8 S Chugwater 41.65N 104.85W
12/17/2025 M74 MPH Laramie WY Mesonet
Mesonet station WY40 7.5 S Chugwater
(WYDOT).
0234 PM Non-Tstm Wnd Gst 2 W Gering 41.83N 103.71W
12/17/2025 M59 MPH Scotts Bluff NE Mesonet
Mesonet station SBFN1 2 W Gering - Scotts
Bluff.
0236 PM Non-Tstm Wnd Gst 15 E Sinclair 41.74N 106.84W
12/17/2025 M61 MPH Carbon WY Mesonet
Mesonet station WY15 14.5 E Sinclair
(WYDOT).
0236 PM Non-Tstm Wnd Gst 11 SE Arlington 41.50N 106.05W
12/17/2025 M68 MPH Albany WY Mesonet
Mesonet station WY25 10.7 SE Arlington
(WYDOT).
0240 PM Non-Tstm Wnd Gst 2 NE Rawlins 41.80N 107.20W
12/17/2025 M61 MPH Carbon WY ASOS
ASOS station KRWL 1 ENE Rawlins.
0242 PM Non-Tstm Wnd Gst Pumpkin Vine 41.05N 105.47W
12/17/2025 M63 MPH Albany WY Mesonet
Mesonet station KPUM Pumpkin Vine (WYDOT).
0246 PM Non-Tstm Wnd Gst 7 SW Federal 41.19N 105.20W
12/17/2025 M66 MPH Laramie WY Mesonet
Mesonet station WY48 7.4 SW Federal (WYDOT).
0246 PM Non-Tstm Wnd Gst 7 ESE Arlington 41.55N 106.09W
12/17/2025 M70 MPH Carbon WY Mesonet
Mesonet station WY24 6.9 E Arlington
(WYDOT).
0246 PM Non-Tstm Wnd Gst 12 WSW Warren Af Base 41.10N 105.07W
12/17/2025 M71 MPH Laramie WY Mesonet
Mesonet station WY38 11.8 S Federal (WYDOT).
0250 PM Non-Tstm Wnd Gst 4 W Muddy Gap 42.38N 107.52W
12/17/2025 M82 MPH Carbon WY Mesonet
Muddy Gap RAWS hit 82 MPH at 2:50pm.
0252 PM Non-Tstm Wnd Gst 5 E Buford 41.10N 105.21W
12/17/2025 M67 MPH Laramie WY Mesonet
Mesonet station WY29 4.8 E Buford (WYDOT).
0256 PM Non-Tstm Wnd Gst 9 WNW Elk Mountain 41.74N 106.57W
12/17/2025 M64 MPH Carbon WY Mesonet
Mesonet station WY17 8.9 S Hanna (WYDOT).
0256 PM Non-Tstm Wnd Gst 1 NNW Whitaker 41.42N 104.88W
12/17/2025 M66 MPH Laramie WY Mesonet
Mesonet station KWTR 0.6 NW Whitaker
(WYDOT).
0256 PM Non-Tstm Wnd Gst 3 NW Elk Mountain 41.72N 106.45W
12/17/2025 M69 MPH Carbon WY Mesonet
Mesonet station WY19 2.9 NW Elk Mountain
(WYDOT).
0256 PM Non-Tstm Wnd Gst 7 WSW Warren Af Base 41.11N 104.97W
12/17/2025 M70 MPH Laramie WY Mesonet
Mesonet station WY39 6.7 W Warren Af Base
(WYDOT).
0256 PM Non-Tstm Wnd Gst 7 NW Elk Mountain 41.75N 106.51W
12/17/2025 M70 MPH Carbon WY Mesonet
Mesonet station WY18 Halleck Ridge (WYDOT).
0256 PM Non-Tstm Wnd Gst 1 SSE Bordeaux 41.93N 104.94W
12/17/2025 M80 MPH Platte WY Mesonet
Mesonet station KBRX 1.4 S Bordeaux (WYDOT).
&&Special weather statement, Dec 17, 3:36 PM MST, 1 hour 46 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
336 PM MST Wed Dec 17 2025
WYZ103>105-109-110-113-114-172345-
Shirley Basin-Upper North Platte River Basin-North Snowy Range
Foothills-North Laramie Range-Central Carbon
County-Ferris/Seminoe/Shirley Mountains-Snowy Range-
336 PM MST Wed Dec 17 2025
...AN AREA OF SNOW SHOWERS WILL AFFECT NORTHEASTERN CARBON AND NORTH
CENTRAL ALBANY COUNTIES...
At 335 PM MST...An area of snow showers was affecting portions of
northeastern Carbon and northern Albany Counties. Periods of snow
showers will persist through 445 PM MST.
HAZARD...Strong winds in excess of 80 mph, visibilities less than
one mile, and rapidly dropping temperatures.
SOURCE...Radar and Webcams.
IMPACT...Hazardous travel conditions due to slick roads and low
visibilities.
Locations impacted include...
Hanna, Medicine Bow, and Elk Mountain.
This includes Interstate 80 in Wyoming between mile markers 232 and
272.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Expect rapid changes in weather and road conditions. Motorists are
urged to use extreme caution if traveling through these areas!
LAT...LON 4223 10570 4152 10627 4162 10701 4219 10651
TIME...MOT...LOC 2235Z 277DEG 26KT 4213 10651 4168 10691
NatoliLocal storm report, Dec 17, 3:51 PM MST, 1 hour 31 minutes before
Preliminary Local Storm Report
National Weather Service Cheyenne WY
351 PM MST Wed Dec 17 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0345 PM Non-Tstm Wnd Dmg Wheatland 42.05N 104.96W
12/17/2025 Platte WY Emergency Mngr
Power outage in parts of Wheatland. Barn
roof blown off near town and substantial
damage to a motel at Glendo. Semi flipped on
I-25.
&&Local storm report, Dec 17, 4:22 PM MST, 1 hour before
Preliminary Local Storm Report
National Weather Service Cheyenne WY
422 PM MST Wed Dec 17 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0256 PM Non-Tstm Wnd Gst 8 S Chugwater 41.65N 104.85W
12/17/2025 M73 MPH Laramie WY Mesonet
Mesonet station WY40 7.5 S Chugwater
(WYDOT).
0300 PM Non-Tstm Wnd Gst 12 NW Medicine Bow 42.01N 106.38W
12/17/2025 M61 MPH Carbon WY Mesonet
Mesonet station PC573 Aeolus.
0300 PM Non-Tstm Wnd Gst 12 SW Glenrock 42.74N 106.02W
12/17/2025 M62 MPH Converse WY Mesonet
Mesonet station PC382 Banner Draw.
0305 PM Non-Tstm Wnd Gst 7 E Buford 41.10N 105.17W
12/17/2025 M66 MPH Laramie WY Mesonet
Mesonet station DVI09204 DVI75422.
0306 PM Non-Tstm Wnd Gst 7 ESE Arlington 41.55N 106.09W
12/17/2025 M65 MPH Carbon WY Mesonet
Mesonet station WY24 6.9 E Arlington
(WYDOT).
0306 PM Non-Tstm Wnd Gst 5 NW Arlington 41.64N 106.29W
12/17/2025 M71 MPH Carbon WY Mesonet
Mesonet station WY21 5.5 NW Arlington
(WYDOT).
0306 PM Non-Tstm Wnd Gst 3 NW Arlington 41.62N 106.24W
12/17/2025 M73 MPH Carbon WY Mesonet
Mesonet station WY22 2.7 NW Arlington
(WYDOT).
0308 PM Non-Tstm Wnd Gst 6 NW Hartville 42.39N 104.81W
12/17/2025 M59 MPH Platte WY Mesonet
Mesonet station GNRW4 6 NW Hartville -
Guernsey.
0316 PM Non-Tstm Wnd Gst 15 E Sinclair 41.74N 106.84W
12/17/2025 M60 MPH Carbon WY Mesonet
Mesonet station WY15 14.5 E Sinclair
(WYDOT).
0316 PM Non-Tstm Wnd Gst 2 E Arlington 41.59N 106.18W
12/17/2025 M65 MPH Carbon WY Mesonet
Mesonet station WY23 1.6 E Arlington
(WYDOT).
0316 PM Non-Tstm Wnd Gst 5 WSW Douglas 42.72N 105.49W
12/17/2025 M66 MPH Converse WY Mesonet
Mesonet station DW7426 Douglas.
0322 PM Non-Tstm Wnd Gst 7 WSW Warren Af Base 41.11N 104.97W
12/17/2025 M79 MPH Laramie WY Mesonet
Mesonet station WY39 6.7 W Warren Af Base
(WYDOT).
0322 PM Non-Tstm Wnd Gst 3 NW Elk Mountain 41.72N 106.45W
12/17/2025 M83 MPH Carbon WY Mesonet
Mesonet station WY19 2.9 NW Elk Mountain
(WYDOT).
0324 PM Non-Tstm Wnd Gst 1 S Glenrock 42.84N 105.86W
12/17/2025 M63 MPH Converse WY Mesonet
Mesonet station KDRC 1.4 S Glenrock (WYDOT).
0326 PM Non-Tstm Wnd Gst 11 SE Arlington 41.50N 106.05W
12/17/2025 M62 MPH Albany WY Mesonet
Mesonet station WY25 10.7 SE Arlington
(WYDOT).
0326 PM Non-Tstm Wnd Gst 10 SSW Hanna 41.73N 106.65W
12/17/2025 M65 MPH Carbon WY Mesonet
Mesonet station WY16 10.5 SW Hanna (WYDOT).
0326 PM Non-Tstm Wnd Gst 9 WNW Elk Mountain 41.74N 106.57W
12/17/2025 M80 MPH Carbon WY Mesonet
Mesonet station WY17 8.9 S Hanna (WYDOT).
0326 PM Non-Tstm Wnd Gst 1 SSE Bordeaux 41.93N 104.94W
12/17/2025 M81 MPH Platte WY Mesonet
Mesonet station KBRX 1.4 S Bordeaux (WYDOT).
0330 PM Non-Tstm Wnd Gst 15 SSW Rawlins 41.60N 107.36W
12/17/2025 M63 MPH Carbon WY Mesonet
Mesonet station PC632 Bridger Pass Rd.
0332 PM Non-Tstm Wnd Gst 12 WSW Warren Af Base 41.10N 105.07W
12/17/2025 M73 MPH Laramie WY Mesonet
Mesonet station WY38 11.8 S Federal (WYDOT).
0332 PM Non-Tstm Wnd Gst 7 NW Elk Mountain 41.75N 106.51W
12/17/2025 M81 MPH Carbon WY Mesonet
Mesonet station WY18 Halleck Ridge (WYDOT).
0332 PM Non-Tstm Wnd Gst 3 N Douglas 42.80N 105.38W
12/17/2025 M83 MPH Converse WY ASOS
ASOS station KDGW Douglas Airport - Dgw.
0336 PM Snow Squall 10 SSW Hanna 41.73N 106.65W
12/17/2025 Carbon WY Dept of Highways
WYDOT Sensor WY16 at Dana Ridge reported
less than quarter mile visibility and winds
gusting 60mph in an intense snow squall
along I-80. Webcams also suggested flash
freeze occurring.
0336 PM Non-Tstm Wnd Gst 4 NNW Vedauwoo 41.20N 105.43W
12/17/2025 M58 MPH Albany WY Mesonet
Mesonet station WY28 3.9 NW Vedauwoo
(WYDOT).
0336 PM Non-Tstm Wnd Gst 6 NNE Buford 41.19N 105.26W
12/17/2025 M62 MPH Laramie WY Mesonet
Mesonet station WY49 6.1 NE Buford (WYDOT).
0336 PM Non-Tstm Wnd Gst 7 SW Federal 41.19N 105.20W
12/17/2025 M73 MPH Laramie WY Mesonet
Mesonet station WY48 7.4 SW Federal (WYDOT).
0340 PM Non-Tstm Wnd Gst 4 SW Rawlins 41.75N 107.29W
12/17/2025 M63 MPH Carbon WY Mesonet
Mesonet station PC571 Rawlins Sw.
0340 PM Non-Tstm Wnd Gst 2 NE Rawlins 41.80N 107.20W
12/17/2025 M71 MPH Carbon WY ASOS
ASOS station KRWL 1 ENE Rawlins.
0342 PM Non-Tstm Wnd Gst 8 NNW Glendo 42.60N 105.10W
12/17/2025 M65 MPH Platte WY Mesonet
Mesonet station WY56 I25 Us26 Us87 - Platte
Converse.
0344 PM Non-Tstm Wnd Gst 11 SSE Garrett 41.97N 105.52W
12/17/2025 M58 MPH Albany WY Mesonet
Mesonet station DODW4 11 SSE Garrett - Dodge
Creek Raws - Dod.
0345 PM Snow Squall 7 NW Elk Mountain 41.75N 106.51W
12/17/2025 Carbon WY Dept of Highways
WYDOT Sensor at Halleck Ridge (WY18)
reported less than quarter mile visibiltiy
with winds gusting 50-60 mph. Webcameras
also suggested a flash freeze occurring.
0346 PM Non-Tstm Wnd Gst 6 SW South Greeley High 41.05N 104.89W
12/17/2025 M62 MPH Laramie WY Mesonet
Mesonet station KWYH 6.5 N Natural Fort
(WYDOT).
0346 PM Non-Tstm Wnd Gst 5 E Buford 41.10N 105.21W
12/17/2025 M65 MPH Laramie WY Mesonet
Mesonet station WY29 4.8 E Buford (WYDOT).
0346 PM Non-Tstm Wnd Gst 1 NNW Whitaker 41.42N 104.88W
12/17/2025 M71 MPH Laramie WY Mesonet
Mesonet station KWTR 0.6 NW Whitaker
(WYDOT).
0346 PM Non-Tstm Wnd Gst 3 ESE Elk Mountain 41.67N 106.37W
12/17/2025 M74 MPH Carbon WY Mesonet
Mesonet station WY20 2.5 SE Elk Mountain
(WYDOT).
0352 PM Non-Tstm Wnd Gst 8 WSW Hillsdale 41.16N 104.61W
12/17/2025 M58 MPH Laramie WY Mesonet
Mesonet station WY46 9.7 E Cheyenne (WYDOT).
0352 PM Non-Tstm Wnd Gst Gun Barrel 41.44N 104.34W
12/17/2025 M58 MPH Laramie WY Mesonet
Mesonet station KGUN Gun Barrel (WYDOT).
0352 PM Non-Tstm Wnd Gst 1 ESE Sinclair 41.77N 107.09W
12/17/2025 M60 MPH Carbon WY Mesonet
Mesonet station WY14 1.5 E Sinclair (WYDOT).
0352 PM Non-Tstm Wnd Gst Vedauwoo 41.16N 105.40W
12/17/2025 M60 MPH Albany WY Mesonet
Mesonet station KVDW Vedauwoo (WYDOT).
0352 PM Non-Tstm Wnd Gst Pumpkin Vine 41.05N 105.47W
12/17/2025 M61 MPH Albany WY Mesonet
Mesonet station KPUM Pumpkin Vine (WYDOT).
0352 PM Non-Tstm Wnd Gst Skyline 41.14N 106.58W
12/17/2025 M68 MPH Carbon WY Mesonet
Mesonet station KSKL Skyline (WYDOT).
0352 PM Non-Tstm Wnd Gst 8 S Sibley Peak 42.32N 105.05W
12/17/2025 M90 MPH Platte WY Mesonet
Mesonet station WY1 8.4 S Sibley Peak
(WYDOT).
0355 PM Non-Tstm Wnd Gst 1 ESE Guernsey 42.26N 104.73W
12/17/2025 M62 MPH Platte WY AWOS
AWOS station KGUR Guernsey.
&&Local storm report, Dec 17, 4:26 PM MST, 56 minutes before
Preliminary Local Storm Report
National Weather Service Cheyenne WY
426 PM MST Wed Dec 17 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0416 PM Non-Tstm Wnd Gst 3 W Van Tassell 42.67N 104.16W
12/17/2025 M68 MPH Niobrara WY Mesonet
Mesonet station WY60 3.4 W Van Tassell
(WYDOT).
&&Local storm report, Dec 17, 5:21 PM MST, 1 minute before
Preliminary Local Storm Report
National Weather Service Cheyenne WY
521 PM MST Wed Dec 17 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0328 PM Non-Tstm Wnd Gst 1 SSW Warren Af Base 41.13N 104.87W
12/17/2025 M61 MPH Laramie WY AWOS
AWOS station KFEW FE Warren AFB - FEW.
0355 PM Non-Tstm Wnd Gst 1 W Saratoga 41.45N 106.83W
12/17/2025 M58 MPH Carbon WY AWOS
AWOS station KSAA Saratoga (shively Field)
Airport - Saa.
0355 PM Non-Tstm Wnd Gst 7 E Buford 41.10N 105.17W
12/17/2025 M63 MPH Laramie WY Mesonet
Mesonet station DVI09204 DVI75422.
0356 PM Non-Tstm Wnd Gst 8 WSW Hillsdale 41.16N 104.61W
12/17/2025 M58 MPH Laramie WY Mesonet
Mesonet station WY46 9.7 E Cheyenne (WYDOT).
0356 PM Non-Tstm Wnd Gst Pumpkin Vine 41.05N 105.47W
12/17/2025 M61 MPH Albany WY Mesonet
Mesonet station KPUM Pumpkin Vine (WYDOT).
0356 PM Non-Tstm Wnd Gst 2 E Arlington 41.59N 106.18W
12/17/2025 M62 MPH Carbon WY Mesonet
Mesonet station WY23 1.6 E Arlington
(WYDOT).
0356 PM Non-Tstm Wnd Gst 5 E Buford 41.10N 105.21W
12/17/2025 M64 MPH Laramie WY Mesonet
Mesonet station WY29 4.8 E Buford (WYDOT).
0356 PM Non-Tstm Wnd Gst Skyline 41.14N 106.58W
12/17/2025 M68 MPH Carbon WY Mesonet
Mesonet station KSKL Skyline (WYDOT).
0356 PM Non-Tstm Wnd Gst 12 WSW Warren Af Base 41.10N 105.07W
12/17/2025 M72 MPH Laramie WY Mesonet
Mesonet station WY38 11.8 S Federal (WYDOT).
0359 PM Non-Tstm Wnd Gst 1 ESE Guernsey 42.26N 104.73W
12/17/2025 M70 MPH Platte WY AWOS
AWOS station KGUR Guernsey.
0400 PM Non-Tstm Wnd Gst 15 SSW Rawlins 41.60N 107.36W
12/17/2025 M63 MPH Carbon WY Mesonet
Mesonet station PC632 Bridger Pass Rd.
0402 PM Non-Tstm Wnd Gst 1 ESE Sinclair 41.77N 107.09W
12/17/2025 M60 MPH Carbon WY Mesonet
Mesonet station WY14 1.5 E Sinclair (WYDOT).
0402 PM Non-Tstm Wnd Gst 8 S Sibley Peak 42.32N 105.05W
12/17/2025 M90 MPH Platte WY Mesonet
Mesonet station WY1 8.4 S Sibley Peak
(WYDOT).
0406 PM Non-Tstm Wnd Gst 7 SW Federal 41.19N 105.20W
12/17/2025 M64 MPH Laramie WY Mesonet
Mesonet station WY48 7.4 SW Federal (WYDOT).
0406 PM Non-Tstm Wnd Gst 3 NW Elk Mountain 41.72N 106.45W
12/17/2025 M68 MPH Carbon WY Mesonet
Mesonet station WY19 2.9 NW Elk Mountain
(WYDOT).
0408 PM Non-Tstm Wnd Gst 6 NW Hartville 42.39N 104.81W
12/17/2025 M73 MPH Platte WY Mesonet
Mesonet station GNRW4 6 NW Hartville -
Guernsey.
0410 PM Non-Tstm Wnd Gst 8 NW Harrison 42.78N 103.99W
12/17/2025 M59 MPH Sioux NE Mesonet
Mesonet station FW9543 Harrison.
0416 PM Non-Tstm Wnd Gst 7 NW Elk Mountain 41.75N 106.51W
12/17/2025 M62 MPH Carbon WY Mesonet
Mesonet station WY18 Halleck Ridge (WYDOT).
0416 PM Non-Tstm Wnd Gst 3 W Van Tassell 42.67N 104.16W
12/17/2025 M68 MPH Niobrara WY Mesonet
Mesonet station WY60 3.4 W Van Tassell
(WYDOT).
0420 PM Non-Tstm Wnd Gst Harrison 42.69N 103.88W
12/17/2025 M61 MPH Sioux NE Mesonet
Mesonet station EW9698 Harrison.
0422 PM Non-Tstm Wnd Gst 7 WSW Warren Af Base 41.11N 104.97W
12/17/2025 M76 MPH Laramie WY Mesonet
Mesonet station WY39 6.7 W Warren Af Base
(WYDOT).
0422 PM Non-Tstm Wnd Gst 1 SSE Bordeaux 41.93N 104.94W
12/17/2025 M78 MPH Platte WY Mesonet
Mesonet station KBRX 1.4 S Bordeaux (WYDOT).
0424 PM Non-Tstm Wnd Gst 18 NNE Harrison 42.92N 103.71W
12/17/2025 M62 MPH Sioux NE Mesonet
Mesonet station MTRN1 Montrose.
0426 PM Non-Tstm Wnd Gst Gun Barrel 41.44N 104.34W
12/17/2025 M63 MPH Laramie WY Mesonet
Mesonet station KGUN Gun Barrel (WYDOT).
0426 PM Non-Tstm Wnd Gst 1 NNW Whitaker 41.42N 104.88W
12/17/2025 M76 MPH Laramie WY Mesonet
Mesonet station KWTR 0.6 NW Whitaker
(WYDOT).
0426 PM Non-Tstm Wnd Gst 6 SW South Greeley High 41.05N 104.89W
12/17/2025 M77 MPH Laramie WY Mesonet
Mesonet station KWYH 6.5 N Natural Fort
(WYDOT).
0431 PM Non-Tstm Wnd Gst 2 E Torrington 42.07N 104.15W
12/17/2025 M64 MPH Goshen WY ASOS
ASOS station KTOR Torrington Airport - Tor.
0432 PM Non-Tstm Wnd Gst 8 NNW Glendo 42.60N 105.10W
12/17/2025 M60 MPH Platte WY Mesonet
Mesonet station WY56 I25 Us26 Us87 - Platte
Converse.
0435 PM Non-Tstm Wnd Gst 4 W Laramie 41.32N 105.67W
12/17/2025 M61 MPH Albany WY ASOS
ASOS station KLAR Laramie Airport - Lar.
0436 PM Non-Tstm Wnd Gst 2 NE Rawlins 41.80N 107.20W
12/17/2025 M70 MPH Carbon WY ASOS
ASOS station KRWL 1 ENE Rawlins.
0438 PM Non-Tstm Wnd Gst 1 NW Cheyenne 41.15N 104.80W
12/17/2025 M69 MPH Laramie WY ASOS
ASOS station KCYS Cheyenne Airport - Cys.
0440 PM Non-Tstm Wnd Gst 4 SW Rawlins 41.75N 107.29W
12/17/2025 M58 MPH Carbon WY Mesonet
Mesonet station PC571 Rawlins Sw.
0440 PM Non-Tstm Wnd Gst 7 E Laramie 41.31N 105.45W
12/17/2025 M62 MPH Albany WY Mesonet
Mesonet station PC236 Pilot Hill.
0442 PM Non-Tstm Wnd Gst 15 E Sinclair 41.74N 106.84W
12/17/2025 M58 MPH Carbon WY Mesonet
Mesonet station WY15 14.5 E Sinclair
(WYDOT).
0442 PM Non-Tstm Wnd Gst 3 ESE Elk Mountain 41.67N 106.37W
12/17/2025 M78 MPH Carbon WY Mesonet
Mesonet station WY20 2.5 SE Elk Mountain
(WYDOT).
0446 PM Non-Tstm Wnd Gst Vedauwoo 41.16N 105.40W
12/17/2025 M66 MPH Albany WY Mesonet
Mesonet station KVDW Vedauwoo (WYDOT).
0446 PM Non-Tstm Wnd Gst 5 NW Arlington 41.64N 106.29W
12/17/2025 M87 MPH Carbon WY Mesonet
Mesonet station WY21 5.5 NW Arlington
(WYDOT).
0452 PM Non-Tstm Wnd Gst 6 NNE Buford 41.19N 105.26W
12/17/2025 M58 MPH Laramie WY Mesonet
Mesonet station WY49 6.1 NE Buford (WYDOT).
0452 PM Non-Tstm Wnd Gst 7 ESE Arlington 41.55N 106.09W
12/17/2025 M58 MPH Carbon WY Mesonet
Mesonet station WY24 6.9 E Arlington
(WYDOT).
0452 PM Non-Tstm Wnd Gst 4 NNW Vedauwoo 41.20N 105.43W
12/17/2025 M64 MPH Albany WY Mesonet
Mesonet station WY28 3.9 NW Vedauwoo
(WYDOT).
0452 PM Non-Tstm Wnd Gst 3 NW Arlington 41.62N 106.24W
12/17/2025 M68 MPH Carbon WY Mesonet
Mesonet station WY22 2.7 NW Arlington
(WYDOT).
0452 PM Non-Tstm Wnd Gst 8 S Chugwater 41.65N 104.85W
12/17/2025 M71 MPH Laramie WY Mesonet
Mesonet station WY40 7.5 S Chugwater
(WYDOT).
&&The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 18, 3:04 AM MST | Fire Weather Watch | CYS | Goshen, Laramie, Platte | 8 hr |
| Dec 18, 3:04 AM MST | Red Flag Warning | CYS | Laramie | 14 hr |
| Dec 18, 10:16 AM MST | High Wind Warning | CYS | Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more | 46 hr |
| Dec 18, 10:48 AM MST | Red Flag Warning | CYS | Albany, Converse, Goshen, Laramie, Niobrara, Platte | 37 hr |
Nearby
Snow Squall Warnings in Wyoming, 2025Every snow squall warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.