Clark Fork, ID Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Clark Fork, ID

June 20, 2024 12:05 PM PDT (19:05 UTC) Change Location
Sunrise 4:47 AM   Sunset 8:50 PM
Moonrise 8:19 PM   Moonset 3:02 AM 
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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.

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7 Day Forecast for Marine Location Near Clark Fork, ID
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Area Discussion for - Spokane, WA
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FXUS66 KOTX 201800 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 1100 AM PDT Thu Jun 20 2024

SYNOPSIS
A warming trend is expected through the week, with high temperatures rebounding into the mid 80s to mid 90s on Saturday. A dry cold front on Sunday will create elevated fire weather concerns with widespread breezy winds across the region. This will likely be followed by temperatures cooling back down towards normal values by Monday.

DISCUSSION
Today through Friday Night: Astronomical summer officially arrives at 150 PM PDT this afternoon with warmer temperatures the main story for the remainder of this week.

An upper trough lingers over the region this morning with a couple weak areas of elevated instability. One area is near the Canadian border although clouds are gradually dissipating with slightly drier air in the mid levels lifting north. A second area was located from the Blue Mountains into the southern Idaho Panhandle with radar showing some high based weak echoes. Models shows this area of mid level moisture and weak mid level instability will continue through much of the day into tonight and thus have added a chance of sprinkles to the forecast. The other area to watch this afternoon will be the north Cascades where there is a 20% chance of surface based convection to develop over the mountainous terrain as a mid level wave passes during peak heating. The CAM's models show the best potential for isolated thunderstorm development in the mountains surrounding the Methow Valley, but can't rule out a few cells further south across Chelan county. On Friday the trough finally begins to push out of the region with drier air aloft moving in. This will limit convection chances on Friday, with a 10-20% chance limited to the mountainous terrain near the North ID/MT border. Despite the trough over the region, temperatures will continue to warm into Friday with the high sun angle of mid to late June, and most places seeing an abundance of it. JW

Saturday through Wednesday: The ridge of high pressure bringing our end-of-week warming trend will be stationed directly over the Inland Northwest Saturday, likely bringing the highest temperatures we've seen yet this season. Daytime highs will be in the upper 80s to mid 90s regionwide. Hitting 100 degrees is not out of the question for some of our warmer locations including Lewiston and the lower Columbia Basin. Remember to stay hydrated and take breaks in the shade as needed if you're outdoors!

By Sunday the ridge will begin to push eastward into Montana and a trough will move in behind it from the Pacific, stalling just offshore. While the trough is not looking to carry any moisture with it, it will create a pressure gradient resulting in winds picking up for Central and Eastern Washington Sunday afternoon. Gusts ranging from 25 to 35 mph are expected with potential for gusts up to 40 mph through the Cascade gaps and over the Waterville Plateau.
Temperatures will be 5 to 15 degrees cooler than Saturday's, but with widespread breezy conditions and relative humidity values below 20 percent, rapid fire spread will be a concern.

Model consensus breaks down at the start of next workweek. Some models keep the trough offshore while others bring it inland. If it stays offshore, temperatures will cool only slightly and conditions will remain dry. If it moves inland, temperatures will cool more noticeably and chances of showers and thunderstorms may pop up along the Canadian border. /Fewkes



AVIATION
18z TAFS: The atmosphere will again become unstable this afternoon but with less moisture to work with. There is a 15% chance of thunderstorms developing this afternoon over the higher terrain along the East Slopes of the Cascades. If any storms form they are not expected to impact any of the airports near the Cascades. Another area we are monitoring is down around the Blue Mountains and the Lewiston area. A narrow layer of moisture and instability has a 10% chance to produce light high based showers, with sprinkles at most reaching the surface. We do have a mention of a 15% chance of thunderstorms in the Blue Mountains this afternoon. Winds will primarily be out of the north and northeast today.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence in VFR conditions through 18z Friday. Instability is incredibly weak today. Models suggest Cascades to have a better chance than the Blues of seeing thunder.

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Confidence descriptors: Low - Less than a 30 percent chance Moderate - 30 to 70 percent chance High - Greater than a 70 percent chance

For additional probabilistic information for NWS Spokane airports, please refer to the Aviation Dashboard on our webpage: https:/ www.weather.gov/otx/avndashboard

PRELIMINARY POINT TEMPS/POPS
Spokane 81 52 85 55 88 59 / 0 0 0 0 0 0 Coeur d'Alene 80 51 83 52 85 55 / 0 10 0 0 0 0 Pullman 80 51 82 53 86 57 / 0 10 0 0 0 0 Lewiston 88 59 91 60 95 64 / 10 10 0 0 0 0 Colville 80 44 84 47 86 49 / 0 0 0 0 0 0 Sandpoint 78 51 80 49 82 52 / 0 0 10 0 0 0 Kellogg 78 56 80 57 83 59 / 0 10 10 0 0 0 Moses Lake 87 53 91 57 93 59 / 0 0 0 0 0 0 Wenatchee 85 61 90 64 92 61 / 0 0 0 0 0 0 Omak 85 54 90 57 91 56 / 0 0 0 0 0 0

OTX WATCHES/WARNINGS/ADVISORIES
ID...None.
WA...None.




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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KSZT30 sm10 minESE 0610 smClear70°F43°F38%30.08
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Spokane, WA,




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