Tuesday, July27, 2021
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Marine Weather and Tides
Silver Gate, MT

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:59AMSunset 9:01PM Monday July 26, 2021 11:12 PM MDT (05:12 UTC) Moonrise 9:55PMMoonset 7:44AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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 Silver Gate, MT
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location: 45.05, -110     debug


Area Discussion for - Billings, MT
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FXUS65 KBYZ 262117 AFDBYZ

Area Forecast Discussion National Weather Service Billings MT 317 PM MDT Mon Jul 26 2021

DISCUSSION.

Tonight through Tuesday night .

Satellite imagery shows broad ridge over the northern Rockies with a weak low off the coast of southern CA. This low is allowing for a surge of monsoon moisture over the Sierras and Great Basin, and in fact at the leading edge of this moisture we are starting to see a few high clouds into eastern MT. It should be noted that moisture over the southwest CONUS is quite rich . a pwat of 1.71" was observed at VEF this morning.

The main story over the next 30 hours is of course heat. Many locations are near or touching 100F at this time. After a mild night, 700mb temps surge to near +18C tomorrow, and this will translate to highs well over 100F (smoke permitting). Records may be set at each of our four main climate stations. Forecast of 109F at Miles City (aided by an afternoon W-N wind) is only two degrees short of the all-time record. By late afternoon and evening, we may see a few high-based weak thunderstorms or virga over our western mountains/foothills. If a storm were to develop, downdraft winds would be a concern for any nearby wildfires.

Canadian cold front will sag into our cwa Tuesday night, bringing a shift to N-NE winds on the order of 10-15 mph.

JKL

Wednesday through Monday .

Ridge will intensify over the northern Rockies the latter half of this week . with 500mb heights into the 590s over our region. The building ridge in tune with the weak CA low will allow for abnormally high monsoonal pwats to surge into MT/WY. As a result, we are looking at daily chances of afternoon and evening thunderstorms through the period . w/ greatest potential over the mountains but will see at least some activity spread over western lower elevations on most of these days. Significant moisture at mid and upper levels is highly suggestive of wet microbursts (i.e. locally heavy rain and strong wind gusts). Moisture over the mountains will be beneficial toward current fire danger, but the risk of lightning and erratic surface winds will be something to monitor daily. Temperatures will take a step down to closer to normal. Look for highs from the upper 80s to mid 90s most days, with warm nighttime lows.

Longwave pattern shows little change through the early part of next week. Do not see any significant ridge breakdowns over at least the next seven days.

JKL

AVIATION.

Smoke aloft will continue to reduce slant range visibility. Some locations near the foothills may see surface visibility reduced to MVFR at times due to smoke. Otherwise, VFR will prevail under strong high pressure aloft. JKL

PRELIMINARY POINT TEMP/POPS.

Tue Wed Thu Fri Sat Sun Mon ----------------------------------------------------------- BIL 067/104 071/096 069/093 067/093 067/091 065/091 064/088 00/G 11/K 24/T 33/T 33/T 24/T 45/T LVM 057/101 063/092 061/090 058/091 059/089 058/087 057/085 01/G 24/T 35/T 44/T 44/T 35/T 56/T HDN 063/108 067/098 066/094 062/095 063/093 061/092 060/091 00/G 01/K 24/T 33/T 23/T 23/T 34/T MLS 067/109 073/097 070/093 067/093 065/092 065/092 066/090 00/G 11/K 23/T 32/T 11/U 12/T 23/T 4BQ 067/107 071/098 068/090 064/091 063/089 062/089 063/086 00/G 00/K 24/T 54/T 22/T 22/T 34/T BHK 066/107 069/096 064/091 061/091 060/091 060/090 061/088 00/G 11/K 23/T 43/T 21/U 11/U 23/T SHR 061/105 067/096 062/090 060/090 060/088 057/087 057/085 01/G 11/K 36/T 65/T 44/T 34/T 45/T

BYZ WATCHES/WARNINGS/ADVISORIES. MT . Excessive Heat Warning in effect until midnight MDT Tuesday night FOR ZONES 29>34-36-37-42-56>58-63-65-66-138-139-141-169-170-172-173-228-235. WY . Excessive Heat Warning in effect until midnight MDT Tuesday night FOR ZONE 199.

weather.gov/billings


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Yellowstone Lake, WY41 mi76 minN 0 mi59°F37°F44%1019 hPa

Link to 5 minute data for KP60

Wind History from P60 (wind in knots)
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Last 24hrCalmNW5CalmNW3CalmNW3CalmCalmCalmCalmCalmSE3E33CalmE4E5NE5CalmW8W4W3CalmW3
1 day agoCalmCalmCalmNW3CalmCalmCalmCalmCalmE3Calm3SE33E33Calm55
G17
3W4NW3W3Calm
2 days agoNW3NW3CalmCalmCalmCalmCalmCalmCalmCalmCalmE4E4344
G17
Calm3Calm3W4NW4W4NW3

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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