Montana, 2022

Avalanche in Montana, February 6, 2022

February 6, 2022 · NWS TFX · 1 event in 1 county or zone

On February 6 a group of 4 men from Iowa were riding in Lionhead. They had ridden in the area for the last 12-15 winters.

The toll

Deaths
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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 TFX wrote it up.

On February 6 a group of 4 men from Iowa were riding in Lionhead. They had ridden in the area for the last 12-15 winters. They all had a beacon, shovel and probe, and 3 of the 4 had airbag packs, including the victim. They all had taken avalanche awareness classes multiple times and read the GNFAC avalanche forecast that morning. The site of the avalanche is locally referred to as Ski Hill , a common slope for snowmobilers to ride ever since a large avalanche cleared trees from the bottom of the path in March 2012. The party knew this was avalanche terrain and had seen the slope slide before.|Bradie (30 years old), the victim, was an expert rider who spent 3 winters in the area. No one witnessed the avalanche, but his brother believes he was sidehilling across the slope, which he had done earlier. Two of the 4 were on top of the slope and out of view. His brother rode up the hill from the bottom of Denny Creek when he saw avalanche debris and Bradie’s flipped sled. Further upslope he spotted orange fabric from a deflated airbag against a tree. He made his way over on sled and foot. It is undetermined if Bradie deployed the airbag or if the zipper opened and spilled the fabric out of the pack. The bright color signaled his location. The brother estimates 10-15 minutes passed from when the avalanche was triggered to when he saw it. It took him another 5-10 minutes to reach and uncover his brother. Bradie had his back pressed against a tree, head helmeted and slightly uphill, but buried under a foot of debris. He was not breathing, although his brother heard a few gasps after digging him out.

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 Great Falls, MT wrote its last area forecast discussion before the first event at Feb 6, 4:45 PM MST, 3 minutes earlier.

Area forecast discussion, Feb 6, 4:45 PM MST, 3 minutes before
Area Forecast Discussion
National Weather Service Great Falls MT
445 PM MST Sun Feb 6 2022

UPDATED AVIATION SECTION

.SYNOPSIS...
Dry and mainly mild conditions are expected over the region
though much of this week with the exception of some isolated
mountain showers Monday and some light precipitation with a quick
moving weather system late this week. Otherwise, the main weather
impact will be strong wind across most of north-central Montana
on Monday, with another period of stronger winds possible again on
Thursday.

&&

Upper level ridge along the west coast with axis extending north into
BC will slump southeast tonight ahead of a shortwave trough crashing
onshore that moves SE across southern AB and MT Monday. Overall
forecast has changed little with respect to this system and
anticipated strong winds across most of north-central MT Monday
and the remaining high wind watch was upgraded to a warning for
eastern portions of north-central MT. Expect strengthening winds
along the Rocky Mtn Front late tonight with gusts in excess of
50kts spreading east onto the adjacent high plains and as far east
as Cut Bank Monday morning. Period of strongest winds in these
areas is likely to occur during the Monday morning period as
cross-barrier flow and favorable temp/wind profiles for downslope
wind enhancement peak, resulting in potential gusts to 80 mph or
higher, especially right along the Rocky Mtn Front. Expect strong
winds with gusts in excess of 50kts to develop by late Monday
morning downwind of the Little Belts and central MT ranges with
the rest of north-central MT seeing a period of strong winds
translate east across the area Monday afternoon into early evening
as the shortwave passes followed by mid-level cold advection to
help mix winds down to the surface. SW MT is largely unaffected by
this system with windy conditions primarily confined to higher
mountain ridges.

In addition to the strong winds across the plains on Monday,
unseasonably mild temperatures in the mid to upper 50s and
humidity as low as around 20% will contribute to increased
grassland fire danger in areas where snow-cover is absent.
Fortunately, most areas have seen at least intermittent snow-
cover over the last few weeks and residual soil moisture is likely
to mitigate a greater fire weather concern. Hoenisch

Tuesday through Sunday...Expect a mostly dry weather pattern over
the region during this period. The one exception will be on Friday,
as the forecast models differ on whether or not to bring an Alberta
clipper south through our region. The NBM has quite low POPs for
this time period, thus POPs were increased a touch over the NBM.
Otherwise, temperatures look on track, with above normal
temperatures expected through the period. Brusda

&&

.AVIATION...
445 PM MST Sun Feb 6 2022 (07/00Z TAF period)

A fairly dry northwest flow aloft will continue VFR conditions
through at least the next 24 hours, with mainly high level
cloudiness passing overhead.

The larger concern will be winds. Mid level winds will increase
during the period, for worsening mountain wave turbulence and low
level wind shear. Surface winds will decrease somewhat this evening,
but they will increase again after 06Z over the plains and then more
so after 15Z when gusts could exceed 50 kt at times, especially on
the Rocky Mountain Front. Winds in the southwest valleys should
increase after 15Z.
-Coulston

Refer to weather.gov/zlc for more detailed regional aviation
weather and hazard information.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  30  57  28  47 /   0   0   0   0
CTB  30  51  28  43 /   0   0   0   0
HLN  21  48  28  46 /   0   0   0   0
BZN   8  42  17  41 /   0   0   0   0
WYS  -1  31   4  32 /   0   0   0   0
DLN  13  42  20  41 /   0   0   0   0
HVR  30  56  27  46 /   0   0   0   0
LWT  27  53  27  43 /   0   0   0   0

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
High Wind Warning from 9 AM to 9 PM MST Monday Cascade...Central
and Southern Lewis and Clark...Chouteau...Eastern Pondera...
Eastern Teton...Judith Basin...Liberty...Meagher...Toole.

High Wind Warning from 11 AM to 11 PM MST Monday Blaine...
Fergus...Hill.

High Wind Warning from 5 AM to 9 PM MST Monday Eastern Glacier...
Northern Rocky Mountain Front...Southern Rocky Mountain Front.

&&

http://www.weather.gov/greatfalls

In the hours before

Local storm report, Feb 6, 2:48 PM MST, 2 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
248 PM MST SUN FEB 6 2022

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

0700 AM     SNOW             7 SSE NEIHART           46.84N 110.70W
02/06/2022  E6.0 INCH        MEAGHER            MT   PUBLIC

            SHOWDOWN SKI RESORT REPORTED 6 INCHES OF NEW
            SNOWFALL IN THE LAST 24 HOURS AS OF THE
            ESTIMATED REPORT TIME.

&&

SAC

Event by event

1 avalanche. Local standard time, as filed.

Avalanche, Gallatin

When
February 6, 4:48 PM MST
Where
Gallatin forecast zone
Deaths
1 direct, 0 indirect
Reported by
Park/Forest Service

Gallatin National Forest Avalanche Center reports a snowmobiler was caught in a natural avalanche near the Lionhead Recreation area. Individual was carried into trees by the avalanche.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Avalanche, Gallatin2022-02-0630MaleOutside/Open AreasDirect

What these are

Avalanche
A mass of snow sliding down a mountainside that caused a death, an injury or damage.

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

The same day elsewhere

More

Every storm in Montana in 2022Every state in 2022This day in weather historyWarnings in Montana, February 2022

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: 1009762.