Montana, 2020

High Wind in Montana, February 4, 2020

February 4, 2020 · NWS TFX · 1 event in 1 county or zone

An upper level disturbance embedded in northwest flow brings a bit of increased winds and areas of light snow to the region. Gusty winds from about Cut Bank to Great Falls are found.

The toll

Deaths
0
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.

An upper level disturbance embedded in northwest flow brings a bit of increased winds and areas of light snow to the region. Gusty winds from about Cut Bank to Great Falls are found. These winds are near high wind criteria in the sustained thresholds. Holding off on high wind products as winds should go on a diminishing trend after passage of the |mentioned disturbance.

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 4, 4:59 PM MST, 2 hours 46 minutes earlier.

Area forecast discussion, Feb 4, 4:59 PM MST, 2 hours 46 minutes before
Area Forecast Discussion
National Weather Service Great Falls MT
459 PM MST Tue Feb 4 2020

...AVIATION SECTION UPDATED...

.SYNOPSIS...

Clouds increase overnight as the next storm system approaches
the region. Snow will develop over the southern and western
Montana Wednesday night. Expect the snow to continue over these
regions Thursday into Friday morning. A second storm system will
affect the region this weekend, with another round of snow and
colder temperatures.

&&

.DISCUSSION...

Skies remain clear over most of the state today. Satellite
imagery shows a long stream of dense clouds moving into Northwest
Montana, associated with an upper level jet that extends well back
into the central Pacific. A moist northwesterly flow develops on
Wednesday, as a fairly strong upper level disturbance moves
southward into the region. Widespread snow, heavy at times, is
likely over portions of the Rocky Mountain Front, Central MT and
Southwest MT from Wednesday afternoon through early Friday
morning. The heaviest snow amounts will occur over the southwest
Mountains, causing difficult travel into winter recreation areas
and increasing avalanche potential. There remains some uncertainty
in storm total snow accumulations in the Southwest valleys,
particularly with regard to snow levels and valley temperatures.
Winter storm watches remain in effect.

Saturday through Tuesday...A 2nd storm system is progged to move
through the region on Saturday and exit the area on Sunday. Snow
amounts of several inches look possible with this system.
Additionally, some convective snowfall is possible with the 2nd
system, resulting in some high snowfall rates. Winter weather
highlights will likely be needed for portions of the region for
this event as well. Monday looks to be mostly dry, with increasing
chances for snow again by next Tuesday. Overall NBM guidance
looked a bit on the warm side, so afternoon temperatures were
adjusted down a few degrees from Sunday through Tuesday.

&&

.AVIATION...
Updated 458 PM MST Tue Feb 4 2020 (05/00Z TAF Period)

VFR conditions are generally expected over the next 24 hours across
the forecast area but a passing disturbance will bring increasing
mid level clouds this evening and mainly mountain precipitation
later tonight into Wednesday along with some periods of MVFR
conditions over southwest Montana. Note that KWYS will likely IFR or
even LIFR at times. Gusty southwest winds will continue over the
plains of north central Montana, especially along the Northern Rocky
Mountain Front and adjacent plains (including KCTB), where gusts
could exceed 35 kt at times.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  22  41  29  42 /  10  10  40  50
CTB  20  39  27  40 /   0  10  10  30
HLN  19  39  30  44 /  30  40  60  60
BZN  13  34  26  42 /  40  50  90  80
WYS  -7  18  10  30 /  30  90 100  90
DLN  12  32  28  42 /  20  50  60  70
HVR  22  40  28  40 /   0  20  30  20
LWT  17  39  27  38 /  10  40  70  60

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from late Wednesday night through late
Thursday night Central and Southern Lewis and Clark...Jefferson.

Winter Storm Watch from Wednesday afternoon through late
Thursday night Broadwater...Cascade...Judith Basin...Meagher.

Winter Storm Watch from Wednesday afternoon through late
Thursday night Beaverhead...Gallatin...Madison.

&&

http://www.weather.gov/greatfalls

In the hours before

Local storm report, Feb 4, 6:19 PM MST, 1 hour 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
619 PM MST TUE FEB 4 2020

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

0345 PM     NON-TSTM WND GST 14 W BYNUM              47.98N 112.61W
02/04/2020  M55 MPH          TETON              MT   MESONET

            MESONET STATION DELMT DELLWO (MCSCN).

0448 PM     NON-TSTM WND GST 3 SW CUT BANK           48.60N 112.37W
02/04/2020  M56 MPH          GLACIER            MT   ASOS

            ASOS STATION KCTB CUT BANK AIRPORT.

0411 PM     NON-TSTM WND GST SAINT MARY              48.74N 113.43W
02/04/2020  M53 MPH          GLACIER            MT   MESONET

            MESONET STATION SRYM8 SAINT MARY RAWS.

0324 PM     NON-TSTM WND GST 2 SE BROWNING           48.54N 112.98W
02/04/2020  M55 MPH          GLACIER            MT   MESONET

            MESONET STATION MTBWG BROWNING (MT DOT).

0221 PM     NON-TSTM WND GST 8 SE EAST GLACIER PARK  48.36N 113.11W
02/04/2020  M77 MPH          GLACIER            MT   MESONET

            MESONET STATION DCRM8 DEEP CREEK RAWS.

&&
Local storm report, Feb 4, 7:31 PM MST, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
731 PM MST TUE FEB 4 2020

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

0350 PM     HIGH SUST WINDS  3 SW CUT BANK           48.60N 112.38W
02/04/2020  M41 MPH          GLACIER            MT   ASOS

            THE CUT BANK AIRPORT OBSERVED AN AVERAGE
            SUSTAINED WIND SPEED OF 41 MPH FROM 3:50 TO
            450 PM.

&&

Event by event

1 high wind. Local standard time, as filed.

High Wind, Eastern Teton

When
February 4, 7:45 PM MST
Where
Eastern Teton forecast zone
Measured
52 kt (60 mph) measured gust
Reported by
Mesonet

Mesonet station delmt dellwo (mcscn) 14 W Bynum.

What these are

High Wind
Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.

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

The same day elsewhere

More

Every storm in Montana in 2020Every state in 2020This day in weather historyWarnings in Montana, February 2020

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: 874772.