Marine Weather and Tide Forecast for Polson, MT
May 17, 2024 9:18 PM MDT (03:18 UTC) Change Location
 | Sunrise 5:52 AM Sunset 9:15 PM Moonrise 2:13 PM Moonset 2:43 AM |
FXUS65 KMSO 171956 AFDMSO
Area Forecast Discussion National Weather Service Missoula MT 156 PM MDT Fri May 17 2024
DISCUSSION
Westerly wind gusts of 35-45 mph will be the main impact as a cold front pushes through the Northern Rockies this afternoon. Brief, localized gusts over 50 mph will also occur near ongoing scattered showers and isolated thunderstorms.
Southwest Montana and the Missoula/Bitterroot valleys will be the most susceptible to these isolated convection induced stronger gusts. Lakes will continue to be choppy as well, so use caution if you are recreating on the water. Valley winds and showers will gradually diminish this evening.
Given the lighter winds, dry air, and partial clearing tonight, lows will drop into the low to mid 30s in lower western Montana and higher central Idaho valleys. Protect any sensitive vegetation that is susceptible to frost. Saturday will be a fairly nice day overall under zonal flow. Valley high temperatures return to seasonable levels (mid/upper 60s) along with afternoon breezes and a few showers returning by late afternoon.
Upper level troughing settles in Sunday accompanied by cooler temperatures and scattered showers. Snow levels drop to around 5000 feet but no impact is anticipated for road surfaces. There is a 30-50% probability of at least 0.25 inch of precipitation from the Flathead Valley eastward into the Glacier region. Overall, precipitation amounts will be light for the rest of the Northern Rockies.
As the trough lingers, scattered instability showers pop up on Monday afternoon. Frost will continue to be a concern in valleys early next week but overnight temperatures will be very dependent on cloud cover.
By next Wednesday- Friday (22nd-24th), about 80% of ensemble clusters support a pattern favorable for closed low development across the Pacific Northwest/Northern Rockies. Closed lows often bring widespread precipitation to the Northern Rockies this time of year, stay tuned!
AVIATION
Westerly winds gusting 30-40 kts will be the main impact of a cold front pushing through the Northern Rockies this afternoon. Brief, localized gusts over 45 kts will also occur near ongoing scattered showers and isolated thunderstorms. Southwest Montana and the Missoula/Bitterroot valleys will be the most susceptible to these isolated convection induced stronger gusts. Showers will briefly lead to visibility and ceiling reductions at terminal sites with mountain obscurations common.
Valley winds and showers diminish around sunset with breezy afternoon winds again on Saturday.
MSO WATCHES/WARNINGS/ADVISORIES
MT...Wind Advisory until 8 PM MDT this evening for Butte/Blackfoot Region...Missoula/Bitterroot Valleys.
Wind Advisory until 8 PM MDT this evening for Flathead/Mission Valleys.
ID...Wind Advisory until 8 PM MDT this evening for Eastern Lemhi County...Western Lemhi County.
Area Forecast Discussion National Weather Service Missoula MT 156 PM MDT Fri May 17 2024
DISCUSSION
Westerly wind gusts of 35-45 mph will be the main impact as a cold front pushes through the Northern Rockies this afternoon. Brief, localized gusts over 50 mph will also occur near ongoing scattered showers and isolated thunderstorms.
Southwest Montana and the Missoula/Bitterroot valleys will be the most susceptible to these isolated convection induced stronger gusts. Lakes will continue to be choppy as well, so use caution if you are recreating on the water. Valley winds and showers will gradually diminish this evening.
Given the lighter winds, dry air, and partial clearing tonight, lows will drop into the low to mid 30s in lower western Montana and higher central Idaho valleys. Protect any sensitive vegetation that is susceptible to frost. Saturday will be a fairly nice day overall under zonal flow. Valley high temperatures return to seasonable levels (mid/upper 60s) along with afternoon breezes and a few showers returning by late afternoon.
Upper level troughing settles in Sunday accompanied by cooler temperatures and scattered showers. Snow levels drop to around 5000 feet but no impact is anticipated for road surfaces. There is a 30-50% probability of at least 0.25 inch of precipitation from the Flathead Valley eastward into the Glacier region. Overall, precipitation amounts will be light for the rest of the Northern Rockies.
As the trough lingers, scattered instability showers pop up on Monday afternoon. Frost will continue to be a concern in valleys early next week but overnight temperatures will be very dependent on cloud cover.
By next Wednesday- Friday (22nd-24th), about 80% of ensemble clusters support a pattern favorable for closed low development across the Pacific Northwest/Northern Rockies. Closed lows often bring widespread precipitation to the Northern Rockies this time of year, stay tuned!
AVIATION
Westerly winds gusting 30-40 kts will be the main impact of a cold front pushing through the Northern Rockies this afternoon. Brief, localized gusts over 45 kts will also occur near ongoing scattered showers and isolated thunderstorms. Southwest Montana and the Missoula/Bitterroot valleys will be the most susceptible to these isolated convection induced stronger gusts. Showers will briefly lead to visibility and ceiling reductions at terminal sites with mountain obscurations common.
Valley winds and showers diminish around sunset with breezy afternoon winds again on Saturday.
MSO WATCHES/WARNINGS/ADVISORIES
MT...Wind Advisory until 8 PM MDT this evening for Butte/Blackfoot Region...Missoula/Bitterroot Valleys.
Wind Advisory until 8 PM MDT this evening for Flathead/Mission Valleys.
ID...Wind Advisory until 8 PM MDT this evening for Eastern Lemhi County...Western Lemhi County.
Missoula, MT,
NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE