Wednesday, September23, 2020
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Marine Weather and Tides
Park City, MT

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:01AMSunset 7:10PM Wednesday September 23, 2020 1:10 PM MDT (19:10 UTC) Moonrise 1:47PMMoonset 10:26PM Illumination 40% Phase: Waxing Crescent; Moon at 6 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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7 Day Forecast for Marine Location Near Park City, MT
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location: 45.83, -109     debug


Area Discussion for - Billings, MT
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FXUS65 KBYZ 231623 AFDBYZ

Area Forecast Discussion . Updated National Weather Service Billings MT 1023 AM MDT Wed Sep 23 2020

UPDATE. Minor tweaks made to line up RH values for tomorrow with neighboring offices. Rest of forecast in good shape. BT

DISCUSSION.

Today through Thursday night .

Light rain showers continue to follow the front through far SE Montana early this morning, and should fully be out of the area over the next couple hours.

A weak overnight trough will help keep temperatures slightly cooler today and allow humidities to not drop below 20 percent at most areas. However, upper ridging returns in full force for the the latter half of today and into Thursday to bring temperatures spiking back to the upper 80s and allow for another very dry day. Following close behind it will be another, more potent cold front that looks to pass through in the late afternoon and evening. Prominent pre-frontal mixing looks to occur and allow west winds to gust up to 40 mph around the foothills and areas up to Billings, then the frontal passage will bring a secondary burst of winds to much of south-central Montana, also gusting up to 40 mph, making this a critical fire weather day. Hence have kept the Fire Weather Watch going. However, an atmospheric river allows some light rain to follow behind the front, mostly occurring overnight into Friday. Vertz

Friday through Tuesday .

Overall not much change to the going extended forecast. Pacific moisture still on track to fill in behind Thursday nights cold front, with scattered showers forecast for Friday into Saturday. Atmospheric River off the Pacific follows the northwesterly jet over the area Sunday and Monday with a continued chance of showers, though they may be more concentrated in narrow bands. Ridge builds strongly over the Pacific coast on Tuesday shifting moisture fetch east of the area ending precipitation chances.

Temperatures behind the cold front will be much cooler than those over the past week or two, but still only reaching normal for this time of year in the 65 to 75 degree range.

Precipitation amounts in the various blends have all dropped a good deal since yesterday for the Friday-Saturday time frame. That said the ensemble means for both the Euro and GFS continue to advertise 0.05-0.15 inches of precipitation possible during this time frame. Snow levels still drop to around 8000 feet Friday night which could bring some light accumulations to the Beartooth Highway into Saturday morning.

With the northwest flow and trof aloft through the extended good mixing should allow stronger winds to work to the surface, especially in the afternoon/evening hours. Increased winds closer to CONSMOS to account for this. Should see northwest gusts 20 to 35 mph just about each day from Friday through Monday. Chambers

AVIATION.

VFR conditions will prevail over the next 24 hours. West winds near KLVM look to gust up to 25 kts during the afternoon. Gilstad/Vertz

PRELIMINARY POINT TEMP/POPS.

Tdy Thu Fri Sat Sun Mon Tue ------------------------------------------------------- BIL 081 056/084 051/071 052/070 051/075 057/075 045/071 0/U 00/N 52/T 22/W 31/B 11/B 10/U LVM 081 052/079 044/071 047/066 047/074 052/075 041/073 0/B 01/N 43/T 33/W 31/B 11/N 10/U HDN 080 052/087 049/072 048/071 046/076 052/073 042/070 0/U 00/B 42/T 32/W 31/B 11/B 10/U MLS 078 051/086 051/072 050/069 046/073 052/070 042/068 0/U 00/B 31/T 32/W 32/W 22/W 10/U 4BQ 079 051/089 049/072 050/070 046/073 054/073 043/067 0/U 00/B 11/T 22/W 32/W 12/W 10/U BHK 078 050/086 048/071 048/067 043/069 050/068 040/063 0/U 00/B 21/B 32/W 32/W 22/W 10/U SHR 079 048/088 045/073 045/071 043/074 049/075 041/070 0/U 00/B 22/T 22/W 31/B 11/B 20/U

BYZ WATCHES/WARNINGS/ADVISORIES. MT . Fire Weather Watch in effect from Thursday afternoon through Thursday evening FOR ZONES 117-123>133. WY . Fire Weather Watch in effect from Thursday afternoon through Thursday evening FOR ZONES 274-284.

weather.gov/billings


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Billings, Billings Logan International Airport, MT25 mi18 minSSW 610.00 miA Few Clouds72°F39°F30%1015.3 hPa

Link to 5 minute data for KBIL

Wind History from BIL (wind in knots)
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Last 24hrCalmNE5NE7NE7CalmCalmNW16N12N7NW7NW13NW11SW8W9SW9SW8SW9SW9SW11SW10SW11SW9S9S6
1 day agoS4SW53SW3CalmNE4E5E3E5S4S4S4CalmS7SW9CalmSW6SW9SW14SW8SW10SW7S6SW7
2 days agoW21
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W8NW10W10NW7W4SW6SW10SW10SW10SW8SW9SW10SW9SW11SW10S5SW9SW4S6

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Billings, MT
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