Lawinenlagebericht

Provo

Veröffentlicht am Apr 16, 2022gültig bis Apr 17, 2022Utah Avalanche Center

Lawinengefahr

Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze

Veraltet — dieser Lagebericht ist 4 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

A MODERATE avalanche danger exists at the mid and upper elevations. Human triggered avalanches 1-2' deep are possible, particularly in areas with recent drifts of wind-blown snow.

Cloud cover will be the WILD CARD. Any sun or green-housing today will make WET AVALANCHES the primary concern.

Lawinenprobleme

Loose Wet
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Unlikely
Größe
2
It seems clouds, wind, and a cooling trend should keep the wet snow at bay today. However, If the strong mid-April sun comes out for periods and/or is accompanied by intense green-housing, WET AVALANCHES may become the primary concern.

Direct sun will affect the solar aspects, while green housing will rapidly affect the cold snow on all aspects, even the mid-elevation northerly aspects. YOU'LL NEED TO BE YOUR OWN FORECASTER to see how the sky cover affects the snow surfaces. Roller balls are the first sign the snow is becoming unstable from heat.
Wind Slabs
N
NE
E
SE
S
SW
W
NW
Hochgebirge
Waldgrenze
Unterhalb der Waldgrenze
Wahrscheinlichkeit
Possible
Größe
2
Over the past few days, active wind transport across the upper elevations has been noted, and drifts may still be triggered in steep wind-loaded terrain today.

Overnight the southerly winds increased and are currently blowing at 10-20 mph, gusting into the 30's once again actively loading some slopes. These winds are forecast to increase today as a cold front arrives in northern Utah this afternoon. Be on the lookout and avoid both hard and soft drifts of wind-blown snow. Human triggered avalanches 1-2' deep are possible.

Special Announcement

The last regular forecast will be tomorrow, Sunday, April 17th. Intermittent forecasts will be issued through April based on weather conditions that affect avalanche danger.

Recent Activity

No new avalanches were reported in the Provo area. In SLC a couple of small wind slabs were reported yesterday, 4-6 inches deep, 30-50 feet wide (photo below: Harmsen). Different story in Logan with some avalanches 2 feet deep and over 1000' wide.

Snow and Weather

Under partly to mostly cloudy skies,the mountain temperatures range from 30° to 42 °F. Winds have increased and are currently blowing from the southwest at speeds of 10-20 mph, gusting into the 30's.

Winds will continue to blow from the southwest and will increase throughout the day as another cold front approaches northern Utah this afternoon. Increasing clouds, thunder, wind, and snowfall will be the main story later this afternoon. We could see another 2-5 inches of new snow by tomorrow morning.

Unfortunately, the April sun came out strong yesterday afternoon, and many south and west aspects will be crusted this am. Last night, a good friend called me at 7:00 pm from Big Cottonwood Canyon and said even the upper elevation north-facing terrain took on some heat. It's been a great return to winter, and this past week has had some impressive storm totals:

Upper Cottonwoods: 20-24" (1.38"-1.70" SWE) *snow-water-equivalent

Park City ridgeline: 12-24" (1-2.0" SWE): higher amounts along the northern end of the PC ridge

Ogden mountains: 20-26" (1.64" SWE)

Provo mountains: 6-10"(0.6" SWE)

General Announcements

Who's up for some free avalanche training? Get a refresher, become better prepared for an upcoming avalanche class, or just boost your skills. Go to https://learn.kbyg.org/ and scroll down to Step 2 for a series of interactive online avalanche courses produced by the UAC.

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This information does not apply to developed ski areas or highways where avalanche control is normally done. This forecast is from the U.S.D.A. Forest Service, which is solely responsible for its content. This forecast describes general avalanche conditions and local variations always occur.

Observations and Avalanches

Backcountry Emergency Procedures