After a brief lull of the winds and after some snowfall across southern Wyoming. Even stronger winds developed mainly across the Interstate 80 corridor from southeast Wyoming into the southern Nebraska Panhandle.
Every event with a place to put it; 8 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
After a brief lull of the winds and after some snowfall across southern Wyoming. Even stronger winds developed mainly across the Interstate 80 corridor from southeast Wyoming into the southern Nebraska Panhandle. Strong gusty winds were observed further north in Niobrara County also.
The local office's own words before the first event, 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 the first event at Mar 14, 4:34 AM MST, 4 hours 34 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service Cheyenne WY
534 AM MDT Fri Mar 14 2025
.KEY MESSAGES...
- A powerful storm system this morning will bring a brief
period of moderate to heavy snowfall to Carbon County.
- Rain changing over to slushy snow is expected in far eastern
Wyoming and the Nebraska panhandle late Friday morning
through the afternoon. There is a 20-40% chance for a higher
impact scenario leading to travel impacts in this area.
- Widespread strong winds will overspread this morning through
the early evening hours along the I-80 corridor and most of
the High Plains.
- Another round of high winds and warming temperatures is
increasingly likely for Sunday into Monday.
&&
.SHORT TERM /THROUGH SATURDAY NIGHT/...
Issued at 329 AM MDT Fri Mar 14 2025
A stacked system over the Intermountain West this morning is
beginning to make its presence felt, and will continue to be the
main weather feature for the short term. At the surface, models
agree a sub-980mb low will develop at the surface near the
border of Colorado and Kansas and accelerate northeastwards into
the Great Lakes by Saturday morning, continuing to eject well
into Canada by Sunday morning. This system will bring two
hazards to our region, with widespread precipitation as well as
high winds anticipated. For rain and snow, bands of activity are
already lifting up from Colorado, with some heavier echoes
noted forming off of favorable frontogenic forcing. These
should overspread western portions of our CWA with moderate
snowfall amounts in the mountains, foothills, and valleys
continuing to be expected. QPF values have increased slightly as
of this writing as well, with values in the Sierra-Madre and
Snowy Ranges now around 0.5-0.7 inch through the end of the
event (0.2-0.3 in the lower elevations). With snow ratios
expected around 15-16 inches/liquid equivalent (13-15 lower
elevations), this will promote a modest amount of snow prompting
the advisories for the day. Latest guidance suggests even the
Saratoga Valley will be able to take advantage of this, and have
added them into the advisory suite as well. The peaks of the
mountains could even near 8-12 inches if heavy banding moves
across, but this should not be widespread enough to prompt
warning levels for the mountains.
But areas further east aren't fully out of the woods with this
system and winter activity. As the low strengthens later this
morning and moisture overspreads east of the I-25 corridor
alongside post-frontal cold air advection, rain should mix into
snow and will produce modest accumulations of a dusting to 1-3
inches. Latest guidance has been honing in on a bullseye of a
quarter to a half inch of QPF in Dawes County, with the bulk of
this falling as rain or a mix before fully transitioning to snow
late in the development. However models aren't fully on board
that this transition won't take place faster, and if cooling
can happen a bit more rapidly, areas including Chadron may see
3-5 inches of fresh accumulation. That being said, guidance is
still not fully sold on this, with average probabilities of
around 20-40% from both high res and NBM guidance, precluding
the need for an advisory in this area. Still, will need to
monitor how the system evolves, and if snow falls a bit faster
than forecast, expect some advisory level snowfall to be
possible.
Meanwhile high winds once again sweep across the region, but
the best environment for stronger activity will shift more
eastwards along the I-80 corridor and into the high plains. The
700mb jet will max around 50-60 knots later this afternoon as
it continues eastwards towards the Nebraska Panhandle, but model
guidance still remains lukewarm on a ton of mixing down with
Omega values generally marginal at best. But with favorable
strong cross gradient mslp profiles, we're still expecting
widespread high winds of 55-65 mph to develop along the I-80
corridor and for portions of the high plains of eastern Wyoming
into Nebraska. Out of an abundance of caution, have left the
high wind watches for other portions of the CWA in place as we
see conditions ramp up this morning and can monitor how the
developing low evolves to possibly upgrade some of these zones
or take them out completely.
As troughing continues eastwards and ridging overtakes the
region Saturday into Sunday, pressure gradients will once again
tighten and a 700mb jet will re-emerge overnight Saturday into
Sunday, continuing to strengthen into the long term period.
This, alongside much more favorable Omega values, will lead to
further high wind concerns during this time period and moving
into Sunday, with more high wind highlights likely. Meanwhile
light moisture alongside orographic enhancement in the Sierra-
Madre and Snowy Ranges should promote a quick and light round of
snowfall Saturday morning into the early afternoon, but only a
few inches at best is expected before relaxing into the
afternoon/early evening hours.
&&
.LONG TERM /SUNDAY THROUGH THURSDAY/...
Issued at 329 AM MDT Fri Mar 14 2025
Sunday...Turning quite windy and warmer as the flow aloft backs to
west northwesterly, inducing a decent surface lee trough
development. Boosted winds in the gridded forecast. 700 mb
temperatures near -2 Celsius, combined with downslope west winds
will yield high temperatures in the upper 40s west of I-25, with mid
50s to lower 60s east of I-25. Dry with limited low and mid level
moisture.
Monday...Fast southwest flow aloft develops with a progressive
shortwave trough aloft approaching Wyoming. Downslope west winds and
700 mb temperatures near 2 Celsius will yield maximum temperatures
in the mid 50s west of I-25, with lower 60s to lower 70s further
east. Continued quite windy based on the strength of the low and mid
level gradients and deep dry adiabatic thermal profiles, aiding
stronger wind transport to the surface.
Tuesday...Colder and windy in the wake of the shortwave trough aloft
and cold frontal passage, based on the progged low and mid level
gradients. Chances for high elevation snow and low elevation rain
will increase from west to east with increasing low and mid level
moisture and cyclonic flow aloft.
Wednesday...Decreasing chances for precipitation from north to south
in the wake of the shortwave trough aloft passage. Colder
temperatures expected with 700 mb temperatures near -10 Celsius.
Thursday...Dry with a warming trend as a transitory shortwave ridge
aloft moves over Wyoming, 700 mb temperatures near -3 Celsius will
yield maximum temperatures in the lower to mid 40s west of I-25,
with mid 40s to lower 50s further east.
&&
.AVIATION /12Z TAFS THROUGH 12Z SATURDAY/...
Issued at 524 AM MDT Fri Mar 14 2025
A potent trough aloft will move to central Colorado this
morning while its associated cold front enters southeast
Wyoming, then the trough aloft will move to southeast Nebraska
by this evening with the cold front passing across our region,
ushering in windy conditions and a chance of precipitation.
Wyoming TAFS...Ceilings will be near 4000 feet until early
evening, with a chance of light snow until 19Z, reducing
visibilities to 2 miles and ceilings to 2500 feet, then ceilings
will range from 8000 to 10000 feet until early evening, before
skies become clear. Winds will gust to 45 knots until early to
mid evening.
Nebraska TAFS...Ceilings will lower to 4000 to 7000 feet by late
morning, with light rain or snow from 18Z to 02Z, reducing
visibilities to 3 to 5 miles and ceilings to 2500 to 4000 feet,
then ceilings will increase to 6000 to 8000 feet after 02Z, and
clear skies will develop after 06Z. Winds will gust to
45 knots.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Watch from 10 AM MDT this morning through this
evening for WYZ101-106>108-115.
High Wind Warning from noon today to 9 PM MDT this evening for
WYZ118-119.
High Wind Warning from 10 AM this morning to 9 PM MDT this
evening for WYZ102.
Winter Weather Advisory until 3 PM MDT this afternoon for
WYZ104-112-114.
Winter Weather Advisory until 3 PM MDT this afternoon for
WYZ109-110-113.
High Wind Warning until midnight MDT tonight for WYZ110-116-
117.
NE...High Wind Watch from 10 AM MDT this morning through this
evening for NEZ002-003-019>021-096.
High Wind Warning from noon today to 9 PM MDT this evening for
NEZ054-055.
High Wind Warning from 10 AM this morning to 9 PM MDT this
evening for NEZ095.
&&
SHORT TERM...CG
LONG TERM...RUBIN
AVIATION...RUBINHazardous Weather Outlook National Weather Service Cheyenne WY 457 AM MDT Fri Mar 14 2025 NEZ002-003-019>021-054-055-095-096-WYZ101>119-151100- 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- 457 AM MDT Fri Mar 14 2025 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. - A powerful storm system this morning will bring a brief period of moderate to heavy snowfall to Carbon County. - Rain changing over to slushy snow is expected in far eastern Wyoming and the Nebraska panhandle late Friday morning through the afternoon. There is a 20-40% chance for a higher impact scenario leading to travel impacts in this area. - Widespread strong winds will overspread this morning through the early evening hours along the I-80 corridor and most of the High Plains. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY - Another round of high winds and warming temperatures is increasingly likely for Sunday into Monday. - Next impactful system is expected during the early to mid portion of next week with widespread snow and gusty winds possible. .Spotter information statement... Spotter activation will not be needed.
The national radar mosaic for the moment the first event began.
8 high wind. Local standard time, as filed.
Two WYDOT reports southeast of Arlington of 60 and 62 mph. Both sensors are along Interstate 80.
Two WYDOT sensors west of Laramie reported wind gusts between 60 to 62 mph.
Several WYDOT sites reported gusts between 58 mph and 65 mph. The 65 mph gust was reported at Vedauwoo.
WYDOT site west of Van Tassell Wyoming reported several gusts over 58 mph.
AWOS sensor Alpha, northwest of Pine Bluffs Wyoming, reported average sustained winds of 43 mph for over 1 hour.
WYDOT site at Bordeaux reported a brief gust of 58 mph.
Cheyenne ASOS reported a peak gust of 59 mph.
Pacific Union Railroad observation west of Cheyenne reported a peak gust of 63 mph. A few other sites reported gusts of 58 mph in the area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2025Every state in 2025This day in weather historyWarnings in Wyoming, March 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1238857, 1238856, 1238858, 1238862, 1238859, 1238863, 1238860, 1238861.