Marine Weather and Tides
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 6:38AM||Sunset 6:37PM||Sunday September 26, 2021 11:02 PM PDT (06:02 UTC)||Moonrise 9:17PM||Moonset 12:41PM||Illumination 67%|
7 Day Forecast for Marine Location Near Athol, IDHourly EDIT Help
Area Discussion for - Spokane, WA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS66 KOTX 270501 AFDOTX
Area Forecast Discussion National Weather Service Spokane WA 1001 PM PDT Sun Sep 26 2021
SYNOPSIS. A slow moving cold front will push across the Inland Northwest on Monday. Precipitation will increase along the cold front Monday afternoon and evening. Temperatures will cool to below normal Monday into Tuesday. A weaker weather system arrives on Thursday with mainly mountain showers. Temperatures returning to near normal toward the end of the week.
DISCUSSION. Tonight through Tuesday: A slow moving cold front associated with a deep low off the BC coast is starting to move onto the Washington coast this afternoon. The front will move through Western Washington tonight and get hung up at the Cascades into early Monday morning until stronger forcing pushes it over the mountains into Eastern Washington and Idaho Monday evening. This front will not be lacking any moisture while it is hung up at the Cascades as a weak atmospheric river aimed northwest into Oregon and Washington brings bring precipitable water values around 160-180%. As a result, the Cascade crest will see a decent amount of rainfall with this front tonight through tomorrow morning with up to .50 to 1.75 inches possible.
The front will move into Eastern Washington tomorrow afternoon ahead of the leading edge of the shortwave through. Stronger forcing associated with this trough will bring increasing precipitation to the Inland Northwest. Hi-res models have been suggesting the possibility for stronger cells embedded within the main band of precipitation over the northeast WA mountains and the Idaho Panhandle late Monday night. Confidence is low but isolated rumbles of thunder cannot be fully ruled out. The highest precipitation amounts will be for higher elevations in northeast Washington, the Panhandle, the Blues, and the Camas Prairie, with .50 to 1.5 inches possible. Lower elevations of the Panhandle, eastern Washington, and the Columbia Basin will see lighter rain accumulations with .10 to .50 inches. Unfortunately, significant rain shadowing will limit precipitation amounts east of the Cascades. The Cascade crest will also see an additional .50 to 1.00 inches of rain through Tuesday bringing their storm total between 1 to 3 inches.
Cooler temperatures behind the front will allow for snow levels to drop to around 5300-5500 feet late Monday night and Tuesday, with a couple inches of snow expected for the high mountains of the North Cascades. Temperatures on Tuesday will drop about 10 degrees compared to Monday with highs in the upper 50s and low 60s. Winds will be breezy Monday and Tuesday with gusts 25 to 30 mph possible across the Waterville Plateau, Columbia Basin, West Plains, and the Palouse. Precipitation will turn more showery Tuesday afternoon as the cold core aloft moves overhead. 500mb temperatures around -25C will destabilize the atmosphere with mid- level lapse rates between 7-8C/km. CAPE values around 100-300 J/kg will support isolated convection over eastern Washington, the northeast WA mountains and the ID Panhandle Tuesday afternoon into the early evening. vmt
AVIATION. 06Z TAFS: A slow moving cold front will push the region during TAF period. Strong winds aloft tonight will result in low level wind shear between 06-12z. Clouds will continue to thicken overnight with bases decreasing 6,000-10,000 ft agl. Rain will continue to spread west to east. Showers are expected to start for GEG-SFF-LWS-PUW around 20Z. Winds will be breezy from the west with gusts near 20 kts. /JDC
PRELIMINARY POINT TEMPS/POPS. Spokane 55 68 46 58 39 60 / 20 40 80 40 10 0 Coeur d'Alene 53 68 46 55 40 59 / 10 40 90 70 20 10 Pullman 50 68 44 55 35 58 / 10 20 90 50 10 0 Lewiston 56 75 51 61 45 66 / 0 20 90 50 10 0 Colville 50 67 43 60 32 59 / 40 70 70 40 10 10 Sandpoint 50 62 44 53 38 55 / 20 60 90 80 30 10 Kellogg 54 67 45 51 42 57 / 10 30 90 80 30 10 Moses Lake 58 70 46 64 37 62 / 20 40 40 10 0 0 Wenatchee 58 67 47 62 44 62 / 30 40 30 30 10 10 Omak 56 69 46 64 40 62 / 30 50 30 20 0 10
OTX WATCHES/WARNINGS/ADVISORIES. ID . None. WA . None.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Coeur d'Alene Airport - Pappy Boyington Field, ID||20 mi||66 min||SSE 8||10.00 mi||Fair||62°F||36°F||38%||1008.6 hPa|
|Sandpoint, Sandpoint Airport, ID||22 mi||67 min||N 0||10.00 mi||Fair||50°F||43°F||76%||1008.1 hPa|
Link to 5 minute data for KCOE
Wind History from COE (wind in knots)
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