High Wind Warning 6, NWS Great Falls, MT

846 
WWUS75 KTFX 062048
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
148 PM MST Mon Feb 6 2023

MTZ302-307-308-071200-
/O.CON.KTFX.HW.W.0005.230206T2100Z-230207T1700Z/
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Northern High Plains-Southern Rocky Mountain Front-Southern High
Plains-
Including the following locations: Browning, Dupuyer, Rogers
Pass, Choteau, Heart Butte, Pendroy, and Bynum
148 PM MST Mon Feb 6 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST TUESDAY...
...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 PM TUESDAY TO 3 PM MST 
WEDNESDAY...

* WHAT...For the first High Wind Warning, west winds 35 to 55 mph 
  with gusts up to 85 mph expected. For the second High Wind 
  Warning, west winds 35 to 45 mph with gusts up to 70 mph expected.

* WHERE...The foothills and plains adjacent to the Rocky Mountain 
  Front, and Southern Rocky Mountain Front.

* WHEN...For the first High Wind Warning, until 10 AM MST Tuesday. 
  For the second High Wind Warning, from 9 PM Tuesday to 3 PM MST 
  Wednesday.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around 
or damaged by the wind.

&&

$$

MTZ303-071200-
/O.CON.KTFX.HW.W.0005.230207T0100Z-230207T1700Z/
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Eastern Glacier, Western Toole, and Central Pondera-
Including the following locations: Ethridge, Santa Rita, and Cut
Bank
148 PM MST Mon Feb 6 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 10 
AM MST TUESDAY...
...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 PM TUESDAY TO 3 PM MST 
WEDNESDAY...

* WHAT...For the first High Wind Warning, west winds 35 to 45 mph 
  with gusts up to 75 mph expected. For the second High Wind 
  Warning, west winds 30 to 40 mph with gusts up to 65 mph expected.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera.

* WHEN...For the first High Wind Warning, from 6 PM this evening to 
  10 AM MST Tuesday. For the second High Wind Warning, from 9 PM 
  Tuesday to 3 PM MST Wednesday.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around 
or damaged by the wind.

&&

$$

MTZ301-071200-
/O.CON.KTFX.HW.W.0005.230206T2100Z-230207T1700Z/
East Glacier Park Region-
Including the following locations: Logan Pass, Kiowa, Saint Mary,
Babb, East Glacier Park, and Marias Pass
148 PM MST Mon Feb 6 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST TUESDAY...

* WHAT...Southwest winds 35 to 55 mph with gusts up to 80 mph 
  expected.

* WHERE...East Glacier Park Region.

* WHEN...Until 10 AM MST Tuesday.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around 
or damaged by the wind.

&&

$$

MTZ311-313-314-318-071200-
/O.NEW.KTFX.HW.A.0005.230208T1200Z-230209T0700Z/
Bears Paw Mountains and Southern Blaine-Judith Basin County and
Judith Gap-Fergus County below 4500ft-Snowy and Judith Mountains-
Including the following locations: Stanford, Hobson, Raynesford,
Windham, Geyser, Lewistown, Benchland, Hilger, Rocky Boy, and
Moccasin
148 PM MST Mon Feb 6 2023

...HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH 
WEDNESDAY EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 60 mph possible.

* WHERE...Snowy and Judith Mountains, Bears Paw Mountains and 
  Southern Blaine, Fergus County below 4500ft and Judith Basin 
  County and Judith Gap.

* WHEN...From late Tuesday night through Wednesday evening.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates.

&&

$$

Ludwig

252 
WWUS75 KTFX 070841
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
141 AM MST Tue Feb 7 2023

MTZ302-307-308-080000-
/O.CON.KTFX.HW.W.0005.000000T0000Z-230207T1700Z/
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Northern High Plains-Southern Rocky Mountain Front-Southern High
Plains-
Including the following locations: Choteau, Pendroy, Heart Butte,
Bynum, Dupuyer, Browning, and Rogers Pass
141 AM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THIS 
MORNING...
...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 3 
PM MST WEDNESDAY...

* WHAT...For the first High Wind Warning, west winds 35 to 45 mph 
  with gusts up to 80 mph. For the second High Wind Warning, west 
  winds 35 to 45 mph with gusts up to 70 mph expected.

* WHERE...The foothills and plains adjacent to the Rocky Mountain 
  Front, and Southern Rocky Mountain Front.

* WHEN...For the first High Wind Warning, until 10 AM MST this 
  morning. For the second High Wind Warning, from 9 PM this evening 
  to 3 PM MST Wednesday.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

* ADDITIONAL DETAILS...Westerly wind gusts will fall to between 45 
  and 55 mph from late Tuesday morning through early Tuesday evening 
  before increasing once again Tuesday night through Wednesday 
  afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around 
or damaged by the wind.

&&

$$

MTZ303-080000-
/O.CON.KTFX.HW.W.0005.000000T0000Z-230207T1700Z/
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Eastern Glacier, Western Toole, and Central Pondera-
Including the following locations: Cut Bank, Santa Rita, and
Ethridge
141 AM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THIS 
MORNING...
...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 3 
PM MST WEDNESDAY...

* WHAT...For the first High Wind Warning, west winds 30 to 40 mph 
  with gusts up to 65 mph. For the second High Wind Warning, west 
  winds 30 to 40 mph with gusts up to 60 mph expected.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera.

* WHEN...For the first High Wind Warning, until 10 AM MST this 
  morning. For the second High Wind Warning, from 9 PM this evening 
  to 3 PM MST Wednesday.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

* ADDITIONAL DETAILS...Westerly wind gusts will fall to between 45 
  and 55 mph from late Tuesday morning through early Tuesday evening 
  before increasing once again Tuesday night through Wednesday 
  afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around 
or damaged by the wind.

&&

$$

MTZ301-071700-
/O.CON.KTFX.HW.W.0005.000000T0000Z-230207T1700Z/
East Glacier Park Region-
Including the following locations: East Glacier Park, Saint Mary,
Babb, Marias Pass, Logan Pass, and Kiowa
141 AM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THIS 
MORNING...

* WHAT...Southwest winds 30 to 45 mph with gusts up to 75 mph.

* WHERE...East Glacier Park Region.

* WHEN...Until 10 AM MST this morning.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

* ADDITIONAL DETAILS...Westerly wind gusts will fall to between 45 
  and 55 mph from late Tuesday morning through early Tuesday evening 
  before increasing once again Tuesday night through Wednesday 
  afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around 
or damaged by the wind.

&&

$$

MTZ311-313-314-318-080000-
/O.CON.KTFX.HW.A.0005.230208T1200Z-230209T0700Z/
Bears Paw Mountains and Southern Blaine-Judith Basin County and
Judith Gap-Fergus County below 4500ft-Snowy and Judith Mountains-
Including the following locations: Geyser, Lewistown, Moccasin,
Rocky Boy, Raynesford, Windham, Stanford, Hilger, Hobson, and
Benchland
141 AM MST Tue Feb 7 2023

...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH 
WEDNESDAY EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 60 mph possible.

* WHERE...Snowy and Judith Mountains, Bears Paw Mountains and 
  Southern Blaine, Fergus County below 4500ft and Judith Basin 
  County and Judith Gap.

* WHEN...From late tonight through Wednesday evening.

* IMPACTS...High winds may move loose debris, damage property and 
  cause power outages. Travel could be difficult, especially for 
  high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates.

&&

$$

AM

633 
WWUS75 KTFX 071521
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
821 AM MST Tue Feb 7 2023

MTZ303-307-080000-
/O.CAN.KTFX.HW.W.0005.000000T0000Z-230207T1700Z/
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Eastern Glacier, Western Toole, and Central Pondera-Southern
Rocky Mountain Front-
Including the following locations: Santa Rita, Rogers Pass, Cut
Bank, and Ethridge
821 AM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 3 PM MST WEDNESDAY...

* WHAT...West winds 35 to 45 mph, with gusts up to 65 mph expected.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera and 
  Southern Rocky Mountain Front.

* WHEN...From 9 PM this evening to 3 PM MST Wednesday.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

MTZ301-071630-
/O.CAN.KTFX.HW.W.0005.000000T0000Z-230207T1700Z/
East Glacier Park Region-
Including the following locations: Babb, Logan Pass, Kiowa, East
Glacier Park, Saint Mary, and Marias Pass
821 AM MST Tue Feb 7 2023

...HIGH WIND WARNING IS CANCELLED...

The threat has ended for strong winds.

$$

MTZ302-308-080000-
/O.CON.KTFX.HW.W.0005.000000T0000Z-230207T1700Z/
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Northern High Plains-Southern High Plains-
Including the following locations: Bynum, Heart Butte, Dupuyer,
Browning, Choteau, and Pendroy
821 AM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THIS 
MORNING...
...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 3 
PM MST WEDNESDAY...

* WHAT...For the first High Wind Warning, southwest winds 35 to 45 
  mph, with gusts up to 65 mph. For the second High Wind Warning, 
  west winds 30 to 40 mph with gusts up to 65 mph expected.

* WHERE...The foothills and plains adjacent to the Rocky Mountain 
  Front.

* WHEN...For the first High Wind Warning, until 10 AM MST this 
  morning. For the second High Wind Warning, from 9 PM this evening 
  to 3 PM MST Wednesday.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

MTZ311-313-314-318-080000-
/O.CON.KTFX.HW.A.0005.230208T1200Z-230209T0700Z/
Bears Paw Mountains and Southern Blaine-Judith Basin County and
Judith Gap-Fergus County below 4500ft-Snowy and Judith Mountains-
Including the following locations: Geyser, Rocky Boy, Windham,
Hilger, Moccasin, Hobson, Stanford, Raynesford, Benchland, and
Lewistown
821 AM MST Tue Feb 7 2023

...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH 
WEDNESDAY EVENING...

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph possible.

* WHERE...Snowy and Judith Mountains, Bears Paw Mountains and 
  Southern Blaine, Fergus County below 4500ft and Judith Basin 
  County and Judith Gap.

* WHEN...From late tonight through Wednesday evening.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

Brusda

473 
WWUS75 KTFX 071702
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
1002 AM MST Tue Feb 7 2023

MTZ302-308-072300-
/O.EXP.KTFX.HW.W.0005.000000T0000Z-230207T1700Z/
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Northern High Plains-Southern High Plains-
Including the following locations: Bynum, Heart Butte, Dupuyer,
Browning, Choteau, and Pendroy
1002 AM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 3 PM MST WEDNESDAY...

* WHAT...West winds 30 to 40 mph, with gusts up to 65 mph expected.

* WHERE...The foothills and plains adjacent to the Rocky Mountain 
  Front.

* WHEN...From 9 PM this evening to 3 PM MST Wednesday.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

MTZ303-307-072300-
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Eastern Glacier, Western Toole, and Central Pondera-Southern
Rocky Mountain Front-
Including the following locations: Santa Rita, Rogers Pass, Cut
Bank, and Ethridge
1002 AM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 3 PM MST WEDNESDAY...

* WHAT...West winds 35 to 45 mph, with gusts up to 65 mph expected.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera and 
  Southern Rocky Mountain Front.

* WHEN...From 9 PM this evening to 3 PM MST Wednesday.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

MTZ311-313-314-318-072300-
/O.CON.KTFX.HW.A.0005.230208T1200Z-230209T0700Z/
Bears Paw Mountains and Southern Blaine-Judith Basin County and
Judith Gap-Fergus County below 4500ft-Snowy and Judith Mountains-
Including the following locations: Geyser, Rocky Boy, Windham,
Hilger, Moccasin, Hobson, Stanford, Raynesford, Benchland, and
Lewistown
1002 AM MST Tue Feb 7 2023

...HIGH WIND WATCH REMAINS IN EFFECT
FROM LATE TONIGHT THROUGH WEDNESDAY EVENING...

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph possible.

* WHERE...Snowy and Judith Mountains, Bears Paw Mountains and 
  Southern Blaine, Fergus County below 4500ft and Judith Basin 
  County and Judith Gap.

* WHEN...From late tonight through Wednesday evening.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

Brusda

409 
WWUS75 KTFX 072142
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
242 PM MST Tue Feb 7 2023

MTZ311-072245-
/O.CAN.KTFX.HW.A.0005.230208T1200Z-230209T0700Z/
Bears Paw Mountains and Southern Blaine-
Including the following locations: Rocky Boy
242 PM MST Tue Feb 7 2023

...HIGH WIND WATCH IS CANCELLED...

The potential for high winds has decreased. Thus the high wind watch 
has been cancelled.

$$

MTZ313-314-318-081200-
/O.UPG.KTFX.HW.A.0005.230208T1200Z-230209T0700Z/
/O.EXB.KTFX.HW.W.0006.230208T1200Z-230209T0700Z/
Judith Basin County and Judith Gap-Fergus County below 4500ft-
Snowy and Judith Mountains-
Including the following locations: Geyser, Windham, Hilger,
Moccasin, Hobson, Stanford, Raynesford, Benchland, and Lewistown
242 PM MST Tue Feb 7 2023

...HIGH WIND WARNING IN EFFECT
FROM 5 AM WEDNESDAY TO MIDNIGHT MST WEDNESDAY NIGHT...

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph expected.

* WHERE...Snowy and Judith Mountains, Fergus County below 4500ft and 
  Judith Basin County and Judith Gap.

* WHEN...From 5 AM Wednesday to Midnight MST Wednesday Night.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

MTZ302-303-307-308-081200-
/O.CON.KTFX.HW.W.0006.230208T0400Z-230208T2200Z/
Northern High Plains-Eastern Glacier, Western Toole, and Central
Pondera-Southern Rocky Mountain Front-Southern High Plains-
Including the following locations: Bynum, Rogers Pass, Santa
Rita, Heart Butte, Dupuyer, Cut Bank, Browning, Choteau, Pendroy,
and Ethridge
242 PM MST Tue Feb 7 2023

...HIGH WIND WARNING REMAINS IN EFFECT
FROM 9 PM THIS EVENING TO 3 PM MST WEDNESDAY...

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph expected.

* WHERE...The foothills and plains adjacent to the Rocky Mountain 
  Front, Eastern Glacier, Western Toole, and Central Pondera, and 
  Southern Rocky Mountain Front.

* WHEN...From 9 PM this evening to 3 PM MST Wednesday.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

Brusda

530 
WWUS75 KTFX 081031
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
331 AM MST Wed Feb 8 2023

MTZ302-303-307-308-082200-
/O.CON.KTFX.HW.W.0006.000000T0000Z-230208T2200Z/
Northern High Plains-Eastern Glacier, Western Toole, and Central
Pondera-Southern Rocky Mountain Front-Southern High Plains-
Including the following locations: Cut Bank, Bynum, Ethridge,
Rogers Pass, Choteau, Heart Butte, Dupuyer, Pendroy, Santa Rita,
and Browning
331 AM MST Wed Feb 8 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MST THIS 
AFTERNOON...

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph expected.

* WHERE...The foothills and plains adjacent to the Rocky Mountain 
  Front, Eastern Glacier, Western Toole, and Central Pondera, and 
  Southern Rocky Mountain Front.

* WHEN...Until 3 PM MST this afternoon.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

MTZ313-314-318-082215-
/O.CON.KTFX.HW.W.0006.230208T1200Z-230209T0700Z/
Judith Basin County and Judith Gap-Fergus County below 4500ft-
Snowy and Judith Mountains-
Including the following locations: Raynesford, Geyser, Hobson,
Moccasin, Benchland, Lewistown, Windham, Stanford, and Hilger
331 AM MST Wed Feb 8 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT...

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph expected.

* WHERE...Snowy and Judith Mountains, Fergus County below 4500ft and 
  Judith Basin County and Judith Gap.

* WHEN...Until Midnight MST tonight.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

Fogleman

253 
WWUS75 KTFX 082144
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
244 PM MST Wed Feb 8 2023

MTZ302-303-307-308-082245-
/O.EXP.KTFX.HW.W.0006.000000T0000Z-230208T2200Z/
Northern High Plains-Eastern Glacier, Western Toole, and Central
Pondera-Southern Rocky Mountain Front-Southern High Plains-
Including the following locations: Santa Rita, Bynum, Pendroy,
Ethridge, Browning, Choteau, Rogers Pass, Dupuyer, Heart Butte,
and Cut Bank
244 PM MST Wed Feb 8 2023

...HIGH WIND WARNING WILL EXPIRE AT 3 PM MST THIS AFTERNOON...

The threat has ended. Strong winds are no longer expected.

$$

MTZ313-314-318-090700-
/O.CON.KTFX.HW.W.0006.000000T0000Z-230209T0700Z/
Judith Basin County and Judith Gap-Fergus County below 4500ft-
Snowy and Judith Mountains-
Including the following locations: Stanford, Benchland, Moccasin,
Hobson, Windham, Hilger, Raynesford, Lewistown, and Geyser
244 PM MST Wed Feb 8 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MST TONIGHT...

* WHAT...West winds 30 to 40 mph, with gusts up to 60 mph expected.

* WHERE...Snowy and Judith Mountains, Fergus County below 4500ft and 
  Judith Basin County and Judith Gap.

* WHEN...Until Midnight MST tonight.

* IMPACTS...Travel could be difficult, especially for high profile 
  vehicles.

$$

Brusda

131 
WWUS75 KTFX 090212
NPWTFX

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
712 PM MST Wed Feb 8 2023

MTZ313-314-318-090315-
/O.CAN.KTFX.HW.W.0006.000000T0000Z-230209T0700Z/
Judith Basin County and Judith Gap-Fergus County below 4500ft-
Snowy and Judith Mountains-
Including the following locations: Hilger, Hobson, Lewistown,
Stanford, Raynesford, Benchland, Moccasin, Windham, and Geyser
712 PM MST Wed Feb 8 2023

...HIGH WIND WARNING IS CANCELLED...

The threat for further high winds has ended.

Northwest wind gusts of up to 40 mph are possible through around 9 
pm, but the overall trend is for the winds to continue decreasing.

$$

SC

Area Forecast Discussion
National Weather Service Great Falls MT
1004 AM MST Mon Feb 6 2023

.SYNOPSIS...

An approaching weather system will continue to bring accumulating
mountain snow to Central and Southwest Montana this morning, with
around 2 to 5 inches expected over Raynolds, Targhee, Bozeman,
Deep Creek, and Kings Hill Passes. Attention then turns to
increasing westerly winds across the plains of Central and North
Central Montana from Monday night into Tuesday, with high winds
expected along the Rocky Mountain Front and adjacent plains.

&&

.UPDATE...

Snow has dissipated across most of Southwestern Montana this
morning, with just a few leftover snow showers over the higher
terrain. With this in mind, we have cancelled the Winter Weather
Advisory a little bit earlier than originally anticipated. Ludwig

&&

.AVIATION...
1004 AM MST Mon Feb 6 2023 (06/18Z TAF Period)

Low to mid-level cloudiness will persist over Southwest and Central
Montana throughout the TAF period as Pacific moisture streams
eastward and across the Northern Rockies. This will bring low
VFR/MVFR conditions to the KBZN and KEKS terminals through the
06/21z to 07/03Z timeframe, thereafter CIGS will gradually improve
to VFR/low VFR. Mountains will be obscured throughout the entire
0618/0718 TAF period, especially along the Continental Divide.
Increasing low to mid-level west winds will also bring strong and
gusty surface winds to the valleys and plains of Central and North
Central Montana from the late afternoon/early evening hours through
Tuesday morning. Mountain wave activity, potentially very strong
immediately downwind of the Rocky Mountain Front, will become
increasingly likely between 07/00z and 07/15z. Additionally,
instance of low-level wind shear will also be possible over this
timeframe at the terminals across the North Central Montana
plains.

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

&&

.PREV DISCUSSION...
/ISSUED 352 AM MST Mon Feb 6 2023/

This Morning...

No changes were made to the existing Winter Weather Advisory for the
mountains of southwest and central Montana. Snow will gradually
diminish during the late morning hours over this area, though light
snow will continue along the Northern Rockies including Marias Pass
with light snow accumulations.

This Afternoon through Tuesday...

Transient ridging over the Northern Rockies today will quickly be
flattened out by an approaching shortwave trough this evening, with
zonal flow then expected over the Northern Rockies through Tuesday
afternoon. This flattening of the upper level ridge combined with
increasing cross barrier flow and a strengthening surface pressure
gradient along the Rocky Mountain Front will lead to increasing
southwest to west surface winds from Monday afternoon and through
the morning hours on Tuesday over the plains of Central and North
Central Montana. SPC HREF ensemble max wind gust guidance depicts
wind gusts pushing right up to, but perhaps not quite reaching,
the 60-mph gust threshold for a High Wind Warning over north-
central Montana especially on the eastern slopes of the mountain
ranges. However, strongest surface winds will be across the
Eastern Glacier Park Region, Southern Rocky Mountain Front,
Northern and Southern High Plains, and Eastern Glacier/Western
Toole/Central Ponder Counties. These gusty winds will be further
enhanced beneath mountain wave activity, with latest BUFKIT
sounding data supporting a very favorable environment (i.e.
ridgetop stability) for mountain waves to develop and propagate
eastward over the plains. Current NBM probabilistic data supports
a 75-85% chance for wind gusts of 48kts or higher at St Mary,
Gleason, and Cut Bank, with a 90-100% chance for 48kts or higher
at Browning and Dellwo through Tuesday morning. Even more
impressive is the probability for sustained winds of 34kts or
higher at Cut Bank and Browning from Monday afternoon/evening
through Tuesday morning, which is between a 70-90% chance. Given
the strong deterministic and probabilistic support for high winds
through Tuesday morning for the Eastern Glacier Park Region,
Southern Rocky Mountain Front, Northern and Southern High Plains,
and Eastern Glacier/Western Toole/Central Pondera Counties, the
High Wind Warning continues from 21z Monday/01z Tuesday through
17z Tuesday. Despite another potential High Wind event Tuesday
evening, decided it was best for the High Wind Warning to expire
at 17z Tuesday given a 12hr window of sub- warning level wind
speeds across the warned area. -CC/Moldan

Tuesday night through next weekend...

The aforementioned trough responsible for increased winds across the
region Monday and Tuesday will continue its approach Tuesday night,
crossing over the region Wednesday. Much like the system expected
across the region today, most precipitation is expected to be
reserved for terrain, and looks to be relatively light in nature at
this time for most areas except along the immediate Continental
Divide across the Glacier Park region. The probability for snow in
excess of 6 inches is around 65-70% across Marias Pass from Tuesday
evening through Wednesday. The probability for snow in excess of 4
inches across the highest peaks of Southwest Montana is running
generally below 50% over the same time period, except along the
Continental Divide toward Chief Joseph Pass where there is ~80%
probability.

The second impact from this system is expected to be another round
of stronger westerly winds across the plains Wednesday morning. A
brief period of lower wind speeds is expected across the plains
Tuesday evening before a surface trough begins to redevelop in lee
of terrain late Tuesday night. Probabilities for gusts in excess of
55 mph that are greater than 50% reside along the immediate eastern
slopes of the Rocky Mountain Front and into the Cut Bank area. This
time period is also included in the current High Wind Watch in
effect along the Rocky Mountain Front. Cooler temperatures are
expected to filter into the region Wednesday evening and overnight,
especially across Southwest Montana, with some models indicating
upslope snow over the mountains and adjacent northwest-facing slopes
Wednesday afternoon into Wednesday night.

From Thursday through next weekend, ensemble clusters generally
agree in upper ridging Thursday gradually transitioning to weak
upper troughing by the end of next weekend. Generally mild
temperatures for mid-February are expected during this time, with
over half of the ensemble clusters generally dry or with light
precipitation. However, about 35-45% of the ensemble clusters do
bring some precipitation primarily to the western and southwestern
Montana mountain regions for at least a part of next weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  45  34  45  32 /  10   0   0  10
CTB  41  33  43  29 /   0   0   0  10
HLN  40  30  43  28 /  10   0   0  50
BZN  35  18  38  20 /  30   0   0  50
WYS  31  10  27  12 /  40  10   0  70
DLN  35  20  36  19 /  10   0   0  40
HVR  37  28  41  28 /  10   0   0  10
LWT  39  28  44  28 /  40   0   0  10

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
High Wind Warning from 2 PM this afternoon to 10 AM MST Tuesday
for East Glacier Park Region-Northern High Plains-Southern High
Plains-Southern Rocky Mountain Front.

High Wind Watch from Tuesday evening through Wednesday afternoon
for East Glacier Park Region-Eastern Glacier, Western Toole, and
Central Pondera-Northern High Plains-Southern High Plains-
Southern Rocky Mountain Front.

High Wind Warning from 6 PM this evening to 10 AM MST Tuesday
for Eastern Glacier, Western Toole, and Central Pondera.

&&

http://www.weather.gov/greatfalls

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1222 PM MST MON FEB 6 2023

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

0734 AM     NON-TSTM WND GST 1 SSE CHRISTINA         47.37N 109.31W
02/04/2023  M59 MPH          FERGUS             MT   MESONET

            MEASURED AT KMTHILGE5.

&&

HART