Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:22AM||Sunset 3:57PM||Tuesday December 10, 2019 12:58 PM PST (20:58 UTC)||Moonrise 4:13PM||Moonset 6:34AM||Illumination 99%|
7 Day Forecast for Marine Location Near Dover, IDHourly EDIT Help
Area Discussion for - Spokane, WA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS66 KOTX 101840 AFDOTX
Area Forecast Discussion National Weather Service Spokane WA 1040 AM PST Tue Dec 10 2019
SYNOPSIS. Bands of light snow will spread across central and eastern Washington overnight and linger over the Idaho Panhandle Wednesday morning. Motorists should expect slick conditions during the morning commute Wednesday. Another storm system will bring heavy mountain snow to the region Thursday into Friday.
. Slippery Morning Commute Possible Wednesday Morning . . Substantial Mountain Snow Possible Late in the Week .
Today . Satellite indicates continued northerly flow aloft over the forecast area this morning under a sharp ridge just ahead of an encroaching Pacific trough. A weak surface high pressure is sitting over the spine of Idaho. Low level moisture sensing satellite products indicate a field of low stratus and patchy fog laying over most of the Columbia basin and valleys appending off of the basin . with only the Palouse area and southern Spokane County benefiting from a drying downslope drift wind radiating out from the Idaho high pressure. Meanwhile waves of high cirrus drift through the ridge axis aloft as the next system approaches. Sensible weather will be rather stagnant today. Areas that are socked in under low clouds will probably remain socked in although ceilings may lift a bit this afternoon. The presence of this stratus and the short daylight period will likely keep temperatures from rising appreciably in these cloudy areas . while temperatures on the Palouse will rise into the upper 30s or low 40s under filtered sunshine today.
Tonight through Wednesday . Deterministic models are coming into better agreement than previous days with the character and strength of the fast moving weather system due through the region tonight. This wave is visible on satellite just off the coast of Oregon this morning. The system is shaping up to resemble the stronger and wetter suite of models from previous runs. The overnight time of transit will bring high confidence that most precipitation will be snow . with a ghost of a chance of freezing rain pockets in the far southern portions of the basin, south of the I-90 corridor. The fast moving nature of the wave will preclude any major snow accumulations, with probably no more than a couple inches in the mountains and a trace to an inch in the deep basin and up to an inch or so over the rising terrain of the eastern basin . which coming overnight and thus impacting the Wednesday morning commute period will probably lead to a slippery drive to work for area motorists on Wednesday morning.
Shortly after dawn on Wednesday this quick hitter will be passing off to the east . depositing a couple inches in the Idaho panhandle mountains as lingering upslope snow showers while a weak follow-on ridge pops up again over the remainder of the forecast area. The system will do little to disturb the sub- inversion boundary layer so plenty of fog and low clouds will remain choked in the basin on Wednesday and inhibit any significant warming before the next and stronger/moister storm system begins to enter the area late in the day or evening.
Wednesday night and Thursday: Models continue to show an active period Wednesday night and Thursday as a strong 150kt zonal jet takes aim across Oregon with a series of waves riding along and north of the jet into Washington and north Idaho. Moist isentropic ascent overtakes the area Wednesday night leading to widespread precipitation with the possible exception around Wenatchee and Vantage areas where some model guidance shows a more pronounced downslope flow off the Cascades and mainly dry weather. Warm advection from the south will be rising snow levels over Eastern WA/N Idaho Wednesday night into Thursday. Moderate snow accumulations are likely in the mountains with travel impacts likely over the mountain passes, with light accumulations possible for the northern valleys, Cascade valleys, and Waterville Plateau before a switch to rain. The I-90 corridor and points south are expected to see valley rain/mountain snow. Winds are also expected to be on the increase Thursday as a mid level jet at 850mb tracks across southern WA with 850mb winds off the 00z GFS/NAM of 40-50 kts. An abundance of cloud cover and limited cold advection will likely make it difficult for these winds to mix down to the surface, but could see at least 25-35 MPH wind gusts around Ritzville, Pullman, and Pomeroy areas.
Thursday night through Saturday night: A cooler and showery pattern develops as northwest flow develops. Initially there remains additional waves tracking through bringing more mountain snow especially to the Cascade crest and Idaho Panhandle with upslope flow where additional moderate snow accumulations are forecast through Friday night. For Saturday/Saturday night a drying trend is expected as a weak split flow develops.
Sunday and Monday: The latest GFS/ECMWF as well as their ensemble means show the potential for a warm front to track through a flat ridge. However the National Blend of Models maintains low POP's with the Canadian model a little stronger with the ridge and maintaining dry conditions as well. Thus confidence is not very high but the potential exists for light precipitation mainly Sunday night/Monday. Snow levels will be low to start so will have to keep an eye on this potential in the days ahead. JW
AVIATION. 18Z TAFS: There should be improvement with ceilings at Lewiston this afternoon. Web cameras suggest that clouds are slowly lifting with a good chance of the cloud deck breaking up this afternoon. There is less optimism for significant ceiling improvement at Moses Lake and Wenatchee this afternoon as they reside under an expansive status field trapped in the Columbia Basin. Light snow will spread east of the Cascades between 00-02z and reach Spokane, Coeur d'Alene, and Pullman between 06z-09z. Most airports across the Inland Northwest will receive measurable snow. Short range ensembles forecast a half inch to as high as 2 inches by sunrise Wednesday. /GKoch
PRELIMINARY POINT TEMPS/POPS. Spokane 37 29 38 35 44 32 / 0 80 30 90 70 40 Coeur d'Alene 39 30 38 35 44 33 / 0 80 50 90 80 50 Pullman 40 31 40 36 46 35 / 0 60 50 80 80 50 Lewiston 42 34 46 38 50 38 / 0 40 30 70 80 50 Colville 35 28 37 32 42 28 / 0 80 20 90 50 30 Sandpoint 35 30 36 33 40 34 / 0 80 50 90 90 60 Kellogg 39 31 37 33 40 34 / 0 70 70 80 90 80 Moses Lake 36 30 37 34 48 32 / 0 50 10 60 30 20 Wenatchee 35 30 36 32 41 32 / 10 60 20 60 40 30 Omak 34 27 35 30 40 30 / 0 50 10 70 30 20
OTX WATCHES/WARNINGS/ADVISORIES. ID . None. WA . None.
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|Sandpoint, Sandpoint Airport, ID||3 mi||64 min||NE 3||10.00 mi||Overcast||32°F||28°F||87%||1023.4 hPa|
Link to 5 minute data for KSZT
Wind History from SZT (wind in knots)
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|2 days ago||S||S||S||Calm||Calm||Calm||Calm||S||W||SW||S||S||SW||SW||SW||W||W||W|
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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.
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Wind Forecast for Spokane, WA (15,3,4,5)(on/off)  Help
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