Strong winds reported at two locations over the I-80 Summit (WY116). Very marginal event, but still gusts over 58 mph.
Every event with a place to put it; 1 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.
Strong winds reported at two locations over the I-80 Summit (WY116). Very marginal event, but still gusts over 58 mph.
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 Apr 7, 9:40 AM MST, 2 hours 52 minutes earlier.
Area Forecast Discussion
National Weather Service Cheyenne WY
1040 AM MDT Thu Apr 7 2022
.SHORT TERM...(Today through Saturday)
Issued at 330 AM MDT Thu Apr 7 2022
Strong winds continue to be the primary forecast challenge in the
short term. Fire weather issues are a concern as well for
Saturday.
Currently...1034mb surface high over western Wyoming this
morning...with slow moving low pressure system over the Great
Lakes area.Strong north gradient remains over our eastern counties
into western Nebraska. Current winds reported in the Panhandle
gusting in the upper 30 to mid 40 mph range at 2AM this morning.
GFS 750 to 800mb winds 50-60kts at 15Z this morning across the
central and southern Nebraska Panhandle with 40kts over the
southeast Wyoming plains east of I-25. Looks like a good bet that
these areas will begin mixing out after sunrise today. High Wind
Warnings in effect for the central and southern Nebraska Panhandle
look good. Am a little concerned with the northern Panhandle
(north Sioux and Dawes) for possible inclusion in the warning.
There is cloud coverage up there that may limit mixing some. Day
shift will need to monitor this area closely this morning for
possible expansion of the warnings.
Winds ease after sunset today with warnings coming to an end.
Central U.S. low pressure system shifts more east...easing out
gradient...with winds shifting back to the west. A pretty nice
day Friday...with 700mb temperatures climbing back to above
freezing. Looking at highs in the 60s for most areas.
Upper ridge axis shifts over the area late Friday afternoon/early
evening as next shortwave trough moves into northwestern Wyoming.
As a result...westerly winds begin to increase again. Looks like
we could see wind headlines in our southeast Wyoming wind prone
areas Saturday morning as 700mb winds increase to 45-50kts.
.LONG TERM...(Saturday night through Wednesday)
Issued at 330 AM MDT Thu Apr 7 2022
The long term outlook remains active. The main challenges in this
forecast package are a series of shortwave troughs on Sunday through
the middle part of next week which will bring several opportunities
for winds and precipitation.
Our brief warm spell will come to an end Saturday evening as another
vigorous trough approaches from the northwest. The 500-mb vorticity
maximum should pass directly over Wyoming as the trough rotates
through. The initial frontal passage Saturday evening into Sunday
morning could lead to some precipitation. The GFS paints a
significantly wetter picture, showing upwards of 0.5" QPF for the
mountains by sunrise Sunday and appreciable lower elevation
precipitation. The ECMWF shows just a few tenths at most during this
initial phase with less lift and moisture. The ensembles, including
the GEFS, tend to be closer to the ECMWF solution, so nudged the
forecast in this direction. Next, there is fairly strong agreement
on this initial shortwave ejecting to the east, and inducing the
development of a 700-mb low over the northern Plains. This may lead
to a tightening of the 700-mb height gradient across southern
Wyoming and naturally another increase in the winds. The GFS shows a
scenario which would be probable high winds for the wind prone areas
at a minimum, but it is worth noting it the deterministic GFS
remains on the very high end of its own ensembles. However, since at
least elevated winds seem probable, nudged the winds upward in the
forecast for Sunday.
After this, attention shifts to what could be a more significant
precipitation producer. A much stronger 500-mb low will dive into
the northwest on Monday into Tuesday and has the potential to induce
lee cyclogenesis over Colorado as it shifts east across the Rockies.
Prior to this development, there is a possibility for some
overrunning precipitation associated with a stalled frontal
boundary. Deterministic models have backed off somewhat with this in
terms of QPF on Monday through Tuesday morning. However, the GFS
shows the stalled boundary to our north, while the ECMWF starts to
our south and then pivots north. Several ensembles keep some light
to moderate precipitation over our area during this time frame, so
kept some low end PoPs in the forecast to account for this
possibility.
Regarding the main 500-mb low track, all guidance has generally
shifted north over the last 24 hours, which resulted in the
deterministic models more or less flip flopping each other in terms
of impacts. The deterministic GFS shows the upper level low
traversing directly across Wyoming, and putting most of our CWA in
the dry slot of the extratropical cyclone. This would be the dry and
windy scenario although still providing a decent round of
precipitation to the mountains. The ECMWF portrays the upper level
low diving further south, traversing across the Great Basin into
Colorado, leading to lee cyclogenesis in a favorable position for
substantial precipitation across much of the forecast area. Again,
we'll take a look at the ensembles to see which of these scenarios
is favored. The ECMWF ensembles have remained fairly consistent in
the last 24 hours, while the GEFS exhibited a distinct shift in the
ensemble mean to a more progressive and northerly upper level low
track. Breaking down the ensembles into clusters, it can be seen
that the ECMWF members are generally clustered into more southerly,
slower solutions, which would lead to more precipitation for us.
While the GEFS mean hasn't budged much over the last 24 hours, the
current mean appears to be skewed by a few members with very high
QPF. The 50th percentile has been dropping steadily, now showing
about 0.7" QPF at KCYS by Wednesday evening. This indicates that
more members are coming on board with a drier, more northerly
solution. That all being said, the overall takeaways have not
changed much since prior forecasts. The potential remains for a wet
spring storm, but confidence in the specific outcome remains quite
low. There is high confidence that the warm spell over the weekend
will come to an end though, and that much cooler temperatures are
likely for a good portion of next week.
&&
.AVIATION...(For the 18Z TAFS through Friday morning)
Issued at 1140 AM MDT Thu Apr 7 2022
Primary Aviation concern is the gradual decrease in winds for most
terminals late this afternoon and this evening. Clouds are a little
more widespread than previous thinking, so increased cloud cover to
SCT-BKN, but CIGS should stay above 6000 feet AGL.
HAZARDS/WEATHER TRENDS: Peak wind gusts out of the northwest between
45 to 60 knots will continue early this afternoon for most terminals
before slowly subsiding between 22z Thursday and 02z Friday. Winds
are expected to diminish below 15 knots by 06z across all terminals.
&&
.FIRE WEATHER...
Issued at 330 AM MDT Thu Apr 7 2022
Another windy day today...especially east of Interstate 25. High
Wind Warnings in effect for much of the Nebraska Panhandle through
6PM today. These strong winds are occurring between a strong high
pressure system over western Wyoming and a strong...slow moving
low pressure system in the central plains. This low finally moves
east later this afternoon and evening...with winds shifting west
and easing as the high builds east. Warmer temperatures Friday
with afternoon humidity getting near critical across most of the
area. Fortunately...winds are expected to be lighter...so critical
fire weather conditions not expected Friday. West winds begin to
pick up again Saturday...with afternoon humidity becoming critical
in the Nebraska Panhandle zones. May see critical fire weather
conditions Saturday as this takes place in the Nebraska Panhandle
fire weather zones.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...High Wind Warning until 9 PM MDT this evening for NEZ003-019>021-
054-055-096.
&&
SHORT TERM...GCC
LONG TERM...MN
AVIATION...TJT
FIRE WEATHER...GCCHazardous Weather Outlook National Weather Service Cheyenne WY 443 AM MDT Thu Apr 7 2022 WYZ101>119-081045- 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- 443 AM MDT Thu Apr 7 2022 This hazardous weather outlook is for portions of east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Northwesterly wind gusts of 50 to 55 mph could create hazardous driving conditions...especially on east to west oriented highways. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY Strong westerly wind gusts of 65 to 70 mph are possible Saturday in the wind prone areas of southeast Wyoming. Winter weather makes a return to southeast Wyoming Sunday and continues through Wednesday as a series of cold fronts move through the area. Impactful snowfall is possible Tuesday and Wednesday across a large area of southeast Wyoming that could impact travel. .Spotter information statement... Spotter activation will not be needed. NEZ002-003-019>021-054-055-095-096-081045- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- 443 AM MDT Thu Apr 7 2022 This hazardous weather outlook is for portions of panhandle Nebraska. .DAY ONE...TODAY AND TONIGHT High Wind Warnings remain in place for all areas in the Nebraska Panhandle through 9 PM this evening. Northwesterly wind gusts of 60 to 70 mph will create hazardous driving conditions...especially on east to west oriented highways. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY Winter weather makes a return to the Nebraska Panhandle Monday and continues through Wednesday as a series of cold fronts move through the area. Impactful snowfall is possible Tuesday and Wednesday that could impact travel. .Spotter information statement... Spotter activation will not be needed.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1126 AM MDT THU APR 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1120 AM NON-TSTM WND GST 6 W LORENZO 41.02N 103.17W
04/07/2022 M58 MPH CHEYENNE NE MESONET
MESONET STATION FW8226 SIDNEY.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1140 AM MDT THU APR 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1127 AM NON-TSTM WND GST 1 NW LORENZO 41.05N 103.07W
04/07/2022 M58 MPH CHEYENNE NE MESONET
MESONET STATION FW8155 SIDNEY.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1203 PM MDT THU APR 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1153 AM NON-TSTM WND GST 4 E SCOTTSBLUFF 41.87N 103.58W
04/07/2022 M58 MPH SCOTTS BLUFF NE ASOS
ASOS STATION KBFF SCOTTSBLUFF AIRPORT - BFF.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1204 PM MDT THU APR 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1153 AM NON-TSTM WND GST 2 SSW SIDNEY 41.10N 102.98W
04/07/2022 M71 MPH CHEYENNE NE ASOS
ASOS STATION KSNY SIDNEY AIRPORT.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1205 PM MDT THU APR 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1146 AM NON-TSTM WND GST 8 S SIBLEY PEAK 42.32N 105.05W
04/07/2022 M58 MPH PLATTE WY MESONET
MESONET STATION WY1 8.4 S SIBLEY PEAK
(WYDOT).
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1209 PM MDT THU APR 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1155 AM NON-TSTM WND GST 4 SSW KIMBALL 41.18N 103.68W
04/07/2022 M59 MPH KIMBALL NE AWOS
AWOS STATION KIBM KIMBAL AIRPORT - IBM.
&&The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Railroad site 2 west northwest of Buford (SHERWS) and Pumpkin Vine WYDOT site.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2022Every state in 2022This day in weather historyWarnings in Wyoming, April 2022
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: 1007685.