Utah, 2023

Debris Flow and Avalanche in Utah, April 6 to 11, 2023

April 6 to 11, 2023 · NWS SLC · 2 events in 2 counties and zones

A warm stretch with record snowpack was associated with several avalanches and debris flows.

Where it happened

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.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
2
Property damage
$100,000
Crop damage
None recorded
Events
2

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.

What happened

The episode as NWS SLC wrote it up.

A warm stretch with record snowpack was associated with several avalanches and debris flows.

What forecasters said that day

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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Apr 5, 2:36 PM MST, 9 hours 24 minutes earlier.

Area forecast discussion, Apr 5, 2:36 PM MST, 9 hours 24 minutes before
Area Forecast Discussion
National Weather Service Salt Lake City UT
336 PM MDT Wed Apr 5 2023

.SYNOPSIS...A major winter storm will move out the region this
evening. High pressure will bring a steady warming trend through
early next week.

&&

.SHORT TERM (Through 12Z Friday)...The storm system that has been
bringing significant snow to the area over the past few days is on
its way out. However, some showers remain over northern Utah this
afternoon, primarily over the higher terrain, as cold pool
instability lingers. As the trough finally exits this evening and
the area loses the extra energy from daytime heating, the showers
will dissipate. Going Winter Storm Warning expires at 00Z which
seems to align roughly with the end of the remaining
precipitation. In the wake of the trough, temperatures remain very
much on the cold side across Utah and southwest Wyoming, with
maxes running close to 20F above seasonal normals for many
locations.

High pressure is on track to makes its way into the Great Basin
Thursday behind the exiting trough, ushering a steady warming
trend with dry and stable conditions that will continue into early
next week. More details can be found in the long term discussion
below.

.LONG TERM (After 12Z Friday)...Long term forecast period looks
to offer a long awaited reprieve from the prolonged cold and wintry
pattern which has held through much of the year. Guidance suggests
on Saturday a weak shortwave and associated baroclinic zone will
graze the northern portion of the forecast region, but will bring
negligible impacts to the greater overall trend. To that end, other
than this feature, ensemble and deterministic guidance show good
agreement on broad ridging developing across the western CONUS into
the upcoming week, with the strongest influence across the local
forecast region expected Monday as the ridge axis translates
eastward across the area.

Ensemble mean shows peak H5 heights rise to ~575-580dm with H7 temps
warming to ~2-6C Sunday on into Monday. With this, anticipate dry
conditions and more sunshine, along with surface temperatures rising
substantially and likely hitting their max values on Monday before
the ridge begins to shift eastward. For the SLC area, Monday shows
good odds to see the first temperatures exceeding 70 degrees (~90%
chance), with non-zero chances of exceeding 70 degrees on Sunday
(~40% chance) and Tuesday (~60%) as well. For the St. George area,
odds are favorable for temperatures to exceed 80 both Monday and
Tuesday (~90% chance), with 80+ also possible as early as Sunday
(~50% chance). Suffice to say, some of the warmest temperatures of
the year look to be in store for the end of the weekend into early
next week. While the warmup to above normal temperatures is welcome
to many, those venturing out, especially into the backcountry of
southern Utah, should be aware of the potential for locally
hazardous conditions associated with snowmelt (such as inundation of
area slot canyons).

By Tuesday, guidance shows moderate consensus in increasing
troughing developing over the PacNW as the ridge shifts east,
locally resulting in mid level height falls and and end to the
warmup with temperatures trending back cooler. Less confidence is
noted in the evolution of this feature Wednesday onward, though
expect to see at least modest PoPs creep back into the forecast.

&&

.AVIATION...KSLC...Convective showers continue this evening as cold
air aloft and now increasingly sunny skies destabilize the
environment. Expecting precipitation to end entirely by 8PM. Outside
of isolated showers, VFR CIGs and VSBY persist. Conditions
improve overnight as high pressure builds in and quiet weather
returns for Thursday.

.REST OF UTAH AND SOUTHWEST WYOMING...One last round of showers from
this storm cycle as thermally driven instability kicks off scattered
development across northern Utah primarily, as well as isolated
portions of southern Utah's high terrain. Outside of isolated
showers, VFR conditions prevail and CIGs will lift and dissipate
through the evening. High pressure and quiet weather area-
wide returns for Thursday.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Winter Storm Warning until 6 PM MDT this evening for UTZ110-111.

WY...None.
&&

SHORT TERM...Traphagan
LONG TERM...Warthen
AVIATION...Wessler

For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecity

In the hours before

Local storm report, Apr 5, 8:32 PM MST, 3 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
932 PM MDT WED APR 05 2023

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

1052 AM     SNOW             ROY                     41.31N 111.96W
04/05/2023  M15.0 INCH       WEBER              UT   TRAINED SPOTTER

0939 PM     SNOW             ALPINE                  40.47N 111.84W
04/04/2023  M29.0 INCH       UTAH               UT   NWS EMPLOYEE

1200 AM     SNOW             MANTI                   39.27N 111.66W
04/05/2023  M3.0 INCH        SANPETE            UT   COOP OBSERVER

0400 AM     SNOW             SANDY                   40.60N 111.85W
04/05/2023  M28.6 INCH       SALT LAKE          UT   TRAINED SPOTTER

0428 PM     SNOW             ALTA                    40.58N 111.64W
04/05/2023  M67.0 INCH       SALT LAKE          UT   MESONET

            ALTA - COLLINS - 9662 FT

0609 PM     SNOW             ALTA                    40.59N 111.64W
04/05/2023  M60.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

            ALTA UDOT - 8799 FT

0702 PM     SNOW             BRIGHTON                40.59N 111.58W
04/05/2023  M35.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

            BRIGHTON CREST - 9500 FT

0426 PM     SNOW             BRIGHTON                40.62N 111.59W
04/05/2023  M26.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

            SOLITUDE - 8200 FT

0355 PM     SNOW             ALTA                    40.57N 111.65W
04/05/2023  M67.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

            SNOWBIRD - 8100 FT

0414 PM     SNOW             PARK CITY               40.66N 111.57W
04/05/2023  M51.0 INCH       SUMMIT             UT   TRAINED SPOTTER

            CANYONS VILLAGE AT PARK CITY - 8800 FT

0345 PM     SNOW             PARK CITY               40.61N 111.54W
04/05/2023  M23.0 INCH       SUMMIT             UT   TRAINED SPOTTER

            PARK CITY MOUNTAIN - 9300 FT

0600 AM     SNOW             EAST MILLCREEK          40.70N 111.83W
04/05/2023  M21.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

0600 AM     SNOW             WEST JORDAN             40.63N 112.02W
04/05/2023  M6.5 INCH        SALT LAKE          UT   TRAINED SPOTTER

0600 AM     SNOW             WEST VALLEY CITY        40.70N 112.02W
04/05/2023  M10.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

0600 AM     SNOW             MAGNA                   40.69N 112.10W
04/05/2023  M19.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

0600 AM     SNOW             KAYSVILLE               41.05N 111.94W
04/05/2023  M21.0 INCH       DAVIS              UT   TRAINED SPOTTER

0602 AM     SNOW             SALT LAKE CITY          40.71N 111.84W
04/05/2023  M21.9 INCH       SALT LAKE          UT   NWS EMPLOYEE

0603 AM     SNOW             SANDY                   40.61N 111.88W
04/05/2023  M18.2 INCH       SALT LAKE          UT   NWS EMPLOYEE

0603 AM     SNOW             NORTH SALT LAKE         40.84N 111.89W
04/05/2023  M21.1 INCH       DAVIS              UT   NWS EMPLOYEE

0607 AM     SNOW             SALT LAKE CITY          40.77N 111.95W
04/05/2023  M14.8 INCH       SALT LAKE          UT   ASOS

0624 AM     SNOW             BOUNTIFUL               40.90N 111.85W
04/05/2023  M28.6 INCH       DAVIS              UT   NWS EMPLOYEE

0645 AM     SNOW             SOUTH JORDAN            40.55N 111.99W
04/05/2023  M17.5 INCH       SALT LAKE          UT   NWS EMPLOYEE

0655 AM     SNOW             CLINTON                 41.15N 112.08W
04/05/2023  M12.0 INCH       DAVIS              UT   TRAINED SPOTTER

0700 AM     SNOW             HOLLADAY                40.67N 111.81W
04/05/2023  M17.5 INCH       SALT LAKE          UT   TRAINED SPOTTER

0700 AM     SNOW             FARMINGTON              40.99N 111.93W
04/05/2023  M12.2 INCH       DAVIS              UT   TRAINED SPOTTER

0700 AM     SNOW             FRUIT HEIGHTS           41.05N 111.91W
04/05/2023  M24.3 INCH       DAVIS              UT   TRAINED SPOTTER

0700 AM     SNOW             CENTERVILLE             40.95N 111.89W
04/05/2023  M15.3 INCH       DAVIS              UT   TRAINED SPOTTER

0700 AM     SNOW             OAKLEY                  40.71N 111.30W
04/05/2023  M12.8 INCH       SUMMIT             UT   TRAINED SPOTTER

0700 AM     SNOW             TAYLORSVILLE            40.65N 111.98W
04/05/2023  M17.1 INCH       SALT LAKE          UT   TRAINED SPOTTER

0700 AM     SNOW             PARK CITY               41.26N 111.84W
04/05/2023  M17.4 INCH       WEBER              UT   COOP OBSERVER

0700 AM     SNOW             LOGAN                   41.74N 111.86W
04/05/2023  M12.1 INCH       CACHE              UT   COOP OBSERVER

0700 AM     SNOW             SALT LAKE CITY          40.79N 111.87W
04/05/2023  M31.5 INCH       SALT LAKE          UT   TRAINED SPOTTER

0700 AM     SNOW             TAYLORSVILLE            40.65N 111.96W
04/05/2023  M16.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

0700 AM     SNOW             SYRACUSE                41.06N 112.06W
04/05/2023  M6.5 INCH        DAVIS              UT   TRAINED SPOTTER

0700 AM     SNOW             MURRAY                  40.63N 111.87W
04/05/2023  M11.2 INCH       SALT LAKE          UT   TRAINED SPOTTER

0700 AM     SNOW             BOUNTIFUL               40.87N 111.85W
04/05/2023  M28.0 INCH       DAVIS              UT   TRAINED SPOTTER

0700 AM     SNOW             OAK CITY                39.37N 112.33W
04/05/2023  M5.5 INCH        MILLARD            UT   TRAINED SPOTTER

0700 AM     SNOW             CEDAR CITY              37.64N 113.13W
04/05/2023  M10.8 INCH       IRON               UT   TRAINED SPOTTER

0700 AM     SNOW             CEDAR CITY              37.75N 113.14W
04/05/2023  M10.0 INCH       IRON               UT   TRAINED SPOTTER

0700 AM     SNOW             NEWCASTLE               37.66N 113.55W
04/05/2023  M5.0 INCH        IRON               UT   TRAINED SPOTTER

0700 AM     SNOW             MANTUA                  41.50N 111.94W
04/05/2023  M39.7 INCH       BOX ELDER          UT   TRAINED SPOTTER

0700 AM     SNOW             THATCHER                41.70N 112.30W
04/05/2023  M1.0 INCH        BOX ELDER          UT   TRAINED SPOTTER

0700 AM     SNOW             BEAVER                  38.28N 112.62W
04/05/2023  M4.6 INCH        BEAVER             UT   TRAINED SPOTTER

0700 AM     SNOW             RICHMOND                41.92N 111.82W
04/05/2023  M11.3 INCH       CACHE              UT   TRAINED SPOTTER

0700 AM     SNOW             IVINS                   37.16N 113.67W
04/05/2023  M0.2 INCH        WASHINGTON         UT   TRAINED SPOTTER

0700 AM     SNOW             ST GEORGE               37.25N 113.62W
04/05/2023  M0.5 INCH        WASHINGTON         UT   TRAINED SPOTTER

0700 AM     SNOW             WEST WEBER              41.24N 112.06W
04/05/2023  M11.3 INCH       WEBER              UT   TRAINED SPOTTER

0700 AM     SNOW             CEDAR CITY              37.68N 113.07W
04/05/2023  M14.8 INCH       IRON               UT   COOP OBSERVER

0700 AM     SNOW             WEST HAVEN              41.18N 112.09W
04/05/2023  M8.7 INCH        WEBER              UT   TRAINED SPOTTER

0700 AM     SNOW             CLARKSTON               41.91N 112.05W
04/05/2023  M4.5 INCH        CACHE              UT   TRAINED SPOTTER

0700 AM     SNOW             SPRINGVILLE             40.17N 111.59W
04/05/2023  M12.1 INCH       UTAH               UT   TRAINED SPOTTER

0700 AM     SNOW             SALT LAKE CITY          40.78N 111.87W
04/05/2023  M26.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

0700 AM     SNOW             LEHI                    40.43N 111.84W
04/05/2023  M10.0 INCH       UTAH               UT   TRAINED SPOTTER

0700 AM     SNOW             HYRUM                   41.62N 111.83W
04/05/2023  M22.0 INCH       CACHE              UT   TRAINED SPOTTER

0700 AM     SNOW             WANSHIP                 40.81N 111.41W
04/05/2023  M15.3 INCH       SUMMIT             UT   TRAINED SPOTTER

0718 AM     SNOW             SANDY                   40.58N 111.89W
04/05/2023  M17.5 INCH       SALT LAKE          UT   TRAINED SPOTTER

0720 AM     SNOW             LYMAN                   41.32N 110.27W
04/05/2023  M18.0 INCH       UINTA              WY   COOP OBSERVER

0914 AM     SNOW             SMITHFIELD              41.84N 111.83W
04/05/2023  M31.0 INCH       CACHE              UT   PUBLIC

0729 AM     SNOW             OAK CITY                39.33N 112.33W
04/05/2023  M5.0 INCH        MILLARD            UT   COOP OBSERVER

0408 PM     SNOW             POWDER MTN              41.36N 111.71W
04/05/2023  M48.0 INCH       WEBER              UT   OFFICIAL NWS OB

            POWDER MOUNTAIN - 0 FT

0800 AM     SNOW             SANDY                   40.59N 111.85W
04/05/2023  M18.7 INCH       SALT LAKE          UT   TRAINED SPOTTER

0800 AM     SNOW             NEW HARMONY             37.48N 113.31W
04/05/2023  M0.5 INCH        WASHINGTON         UT   COOP OBSERVER

0800 AM     SNOW             RICHFIELD               38.58N 112.33W
04/05/2023  M2.0 INCH        SEVIER             UT   COOP OBSERVER

0800 AM     SNOW             CALLAO                  39.89N 113.71W
04/05/2023  M2.9 INCH        JUAB               UT   COOP OBSERVER

0800 AM     SNOW             HEBER CITY              40.40N 111.53W
04/05/2023  M3.5 INCH        WASATCH            UT   COOP OBSERVER

0800 AM     SNOW             RANDOLPH                41.66N 111.19W
04/05/2023  M23.5 INCH       RICH               UT   COOP OBSERVER

0800 AM     SNOW             TRENTON                 41.92N 111.91W
04/05/2023  M4.5 INCH        CACHE              UT   COOP OBSERVER

0800 AM     SNOW             HEBER CITY              40.50N 111.41W
04/05/2023  M5.5 INCH        WASATCH            UT   TRAINED SPOTTER

0800 AM     SNOW             PLEASANT VIEW           41.31N 112.00W
04/05/2023  M9.6 INCH        WEBER              UT   TRAINED SPOTTER

0800 AM     SNOW             SOUTH OGDEN             41.19N 111.96W
04/05/2023  M13.5 INCH       WEBER              UT   TRAINED SPOTTER

0800 AM     SNOW             EDEN                    41.30N 111.81W
04/05/2023  M12.5 INCH       WEBER              UT   TRAINED SPOTTER

0800 AM     SNOW             PARK CITY               40.68N 111.50W
04/05/2023  M9.0 INCH        SUMMIT             UT   TRAINED SPOTTER

0800 AM     SNOW             OGDEN                   41.25N 111.94W
04/05/2023  M19.7 INCH       WEBER              UT   COOP OBSERVER

0800 AM     SNOW             PROVIDENCE              41.71N 111.83W
04/05/2023  M28.6 INCH       CACHE              UT   TRAINED SPOTTER

0800 AM     SNOW             WELLSVILLE              41.64N 111.94W
04/05/2023  M15.2 INCH       CACHE              UT   TRAINED SPOTTER

0800 AM     SNOW             PROVIDENCE              41.71N 111.82W
04/05/2023  M22.7 INCH       CACHE              UT   TRAINED SPOTTER

0800 AM     SNOW             BEAR RIVER              41.62N 112.17W
04/05/2023  M2.5 INCH        BOX ELDER          UT   TRAINED SPOTTER

0815 AM     SNOW             SOUTH WEBER             41.12N 111.92W
04/05/2023  M20.9 INCH       DAVIS              UT   TRAINED SPOTTER

0829 AM     SNOW             DRAPER                  40.46N 111.83W
04/05/2023  M24.0 INCH       UTAH               UT   NWS EMPLOYEE

0830 AM     SNOW             EAST MILLCREEK          40.69N 111.79W
04/05/2023  M27.7 INCH       SALT LAKE          UT   NWS EMPLOYEE

0845 AM     SNOW             BRIGHAM CITY            41.51N 112.02W
04/05/2023  M15.4 INCH       BOX ELDER          UT   TRAINED SPOTTER

0846 AM     SNOW             1 W LAYTON              41.03N 111.95W
04/05/2023  M5.0 INCH        DAVIS              UT   PUBLIC

1128 AM     SNOW             SUMMIT PARK             40.75N 111.61W
04/05/2023  M45.0 INCH       SUMMIT             UT   TRAINED SPOTTER

0858 AM     SNOW             BOUNTIFUL               40.89N 111.88W
04/05/2023  M18.0 INCH       DAVIS              UT   PUBLIC

            3 DAY TOTAL AT 4200FT

0900 AM     SNOW             PLEASANT GROVE          40.38N 111.73W
04/05/2023  M9.8 INCH        UTAH               UT   TRAINED SPOTTER

0900 AM     SNOW             EDEN                    41.33N 111.82W
04/05/2023  M12.5 INCH       WEBER              UT   COOP OBSERVER

0900 AM     SNOW             WEST JORDAN             40.59N 112.01W
04/05/2023  M19.0 INCH       SALT LAKE          UT   TRAINED SPOTTER

0945 AM     SNOW             RIVER HGTS              41.73N 111.80W
04/05/2023  M43.0 INCH       CACHE              UT   TRAINED SPOTTER

1015 AM     SNOW             SANDY                   40.57N 111.85W
04/05/2023  M18.0 INCH       SALT LAKE          UT   PUBLIC

1030 AM     SNOW             SANTAQUIN               39.96N 111.78W
04/05/2023  M12.0 INCH       UTAH               UT   COOP OBSERVER

1050 AM     SNOW             SPRINGVILLE             40.17N 111.61W
04/05/2023  M15.0 INCH       UTAH               UT   TRAINED SPOTTER

1126 AM     SNOW             SYRACUSE                41.09N 112.05W
04/05/2023  M15.3 INCH       DAVIS              UT   NWS EMPLOYEE

1248 PM     SNOW             LOGAN                   41.75N 111.80W
04/05/2023  M25.6 INCH       CACHE              UT   COOP OBSERVER

0117 PM     SNOW             HYRUM                   41.66N 111.89W
04/05/2023  M11.3 INCH       CACHE              UT   TRAINED SPOTTER

0117 PM     SNOW             LOGAN                   41.67N 111.89W
04/05/2023  M11.3 INCH       CACHE              UT   COOP OBSERVER

0120 PM     SNOW             OGDEN                   41.25N 111.94W
04/05/2023  M19.7 INCH       WEBER              UT   TRAINED SPOTTER

0356 PM     SNOW             WEST JORDAN             40.60N 112.07W
04/05/2023  M19.8 INCH       SALT LAKE          UT   TRAINED SPOTTER

0400 PM     SNOW             FILLMORE                38.97N 112.34W
04/05/2023  M5.0 INCH        MILLARD            UT   COOP OBSERVER

0400 PM     SNOW             MORONI                  40.75N 111.72W
04/05/2023  M35.0 INCH       SALT LAKE          UT   COOP OBSERVER

0400 PM     SNOW             SALT LAKE CITY          40.77N 111.90W
04/05/2023  M15.0 INCH       SALT LAKE          UT   COOP OBSERVER

0400 PM     SNOW             SALT LAKE CITY          40.81N 111.83W
04/05/2023  M22.0 INCH       SALT LAKE          UT   COOP OBSERVER

0425 PM     SNOW             SPRINGVILLE             40.17N 111.59W
04/05/2023  M20.0 INCH       UTAH               UT   TRAINED SPOTTER

0442 PM     SNOW             SNOWBASIN               41.20N 111.86W
04/05/2023  M51.0 INCH       WEBER              UT   MESONET

            SNOWBASIN-MID. BOWL - 7402 FT

0500 PM     SNOW             TOOELE                  40.53N 112.30W
04/05/2023  M8.3 INCH        TOOELE             UT   COOP OBSERVER

0500 PM     SNOW             LAKE POINT              41.11N 112.86W
04/05/2023  M0.5 INCH        BOX ELDER          UT   COOP OBSERVER

0500 PM     SNOW             SPANISH FORK            40.08N 111.60W
04/05/2023  M14.0 INCH       UTAH               UT   COOP OBSERVER

0500 PM     SNOW             LAKETOWN                41.83N 111.32W
04/05/2023  M24.6 INCH       RICH               UT   COOP OBSERVER

0600 PM     SNOW             ALPINE                  40.46N 111.77W
04/05/2023  M18.7 INCH       UTAH               UT   COOP OBSERVER

0600 PM     SNOW             SCIPIO                  39.25N 112.10W
04/05/2023  M3.0 INCH        MILLARD            UT   COOP OBSERVER

0605 PM     SNOW             PROVO                   40.25N 111.65W
04/05/2023  M6.4 INCH        UTAH               UT   COOP OBSERVER

0715 PM     SNOW             NEOLA                   40.42N 110.05W
04/05/2023  M2.0 INCH        DUCHESNE           UT   COOP OBSERVER

0800 PM     SNOW             FILLMORE                39.29N 112.65W
04/05/2023  M5.0 INCH        MILLARD            UT   COOP OBSERVER

0800 PM     SNOW             MANTI                   39.26N 111.63W
04/05/2023  M7.2 INCH        SANPETE            UT   COOP OBSERVER

0858 PM     SNOW             ROY                     41.18N 112.04W
04/05/2023  M13.0 INCH       WEBER              UT   TRAINED SPOTTER

&&

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 avalanche, 1 debris flow. Local standard time, as filed.

Avalanche, Wasatch Mountains South of I-80

When
April 6, 12:00 AM MST to April 11, 12:00 AM MST
Where
Wasatch Mountains South of I-80 forecast zone
Property damage
$50,000
Reported by
Broadcast Media
Coordinates
40.338, -111.701 (the zone’s center; the record gives no point)

Rapid warming produced a natural avalanche across the opened portion of State Route 210 (Little Cottonwood Canyon Road) on the 6th. The avalanche flowed into Snowbird, crossing the Chickadee trail and lift.

The town of Alta and Snowbird Village returned to interlodge until the 7th. State Route 210 was closed with limited openings for uphill during the morning and evening on the 8th and 9th due to concerns with midday warming and natural avalanche cycles.

State Route 190 (Big Cottonwood Canyon Road) was closed with limited openings during the morning and from late afternoon through the evening from the 8th through the 10th due to concerns with midday warming and natural avalanche cycles.

A large wet avalanche ran across UT-210 at 1215 PM Monday 4/10 at White Pine Chutes, fully blocking the road.

Debris Flow, Davis

When
April 8, 9:00 AM MST
Where
Davis County, 0.19 mi ENE of Fruit Hgts to 0.24 mi ENE of Fruit Hgts
Cause
Heavy Rain / Snow Melt
Injuries
2 direct, 0 indirect
Property damage
$50,000
Reported by
Broadcast Media
Coordinates
41.031, -111.897

A mudslide/debris flow in Fruit Heights on the 8th destroyed a barn, killed undefined livestock, and injured two individuals who were trapped in the debris. Both were rescued and temporarily hospitalized with injuries.

What these are

Avalanche
A mass of snow sliding down a mountainside that caused a death, an injury or damage.
Debris Flow
A fast-moving slurry of mud, rock and debris, usually on a slope soaked by heavy rain or stripped by a fire.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Utah in 2023Every state in 2023This day in weather historyWarnings in Utah, April 2023

Sources

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: 1095882, 1095884.