Tuesday, April7, 2020
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Marine Weather and Tides
Ponderay, ID

Version 3.4
NOTICE
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 6:10AMSunset 7:27PM Tuesday April 7, 2020 12:07 PM PDT (19:07 UTC) Moonrise 7:08PMMoonset 6:28AM Illumination 100% Phase: Full Moon; Moon at 15 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 Ponderay, ID
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location: 48.36, -116.55     debug


Area Discussion for - Spokane, WA
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FXUS66 KOTX 071739 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 1039 AM PDT Tue Apr 7 2020

SYNOPSIS. The remainder of the work week will be dry and warmer. Many locations will experience highs in the 60s to 70s Wednesday, Thursday, and Friday. Temperatures will trend a bit cooler over the weekend, and the chance for showers will return to the mountainous portions of the Inland Northwest.

DISCUSSION. Tuesday through Thursday: The combination of low pressure passing through the Canadian Plains and high pressure building on the Pacific NW Coast will create a tight pressure gradient across the region today and result in breezy winds. Winds have already picked around Wenatchee, Entiat, across the Waterville Plateau, and into Ephrata this morning. Gusts of 30-35 mph have been common in these areas. Breezy winds will expand across the entire Columbia Basin and into into the Idaho Panhandle and southern reaches of our northern counties. Wind gusts for locations like Spokane, Pullman, Ritzville, and Odessa will be on the order of 20-25 mph . decreasing closer to 15-20 mph for Lewiston, St Maries, Couer D Alene, and Sandpoint. The winds along the East Slopes and Waterville Plateau will remain breezy through the day but we should see gust come down some during the morning and early afternoon back into the 20-25 mph range. By late afternoon and early evening, we are expected wind gusts to ramp back up into the 30-35 mph range as the late day drainage winds align with the gradient driven winds. In addition to the Wenatchee River Valley, Waterville Plateau, and Entiat area, hi-res models show a burst of northwest winds of similar speeds coming down the Methow Valley and spilling toward Grand Coulee. Winds will swing around the north Wednesday night and become lighter with speeds of 8-15 mph. The strongest winds will be found down the Okanogan Valley with speeds of 10-20 mph. Temperatures on Tuesday will be similar to Monday if not withing 1-2 degrees.

High pressure strengthens over the Northwest for Wednesday and Thursday promoting light winds and a strong warming and drying trend. Afternoon highs will warm into the 60s Wednesday and 60s to lower 70s Thursday under mostly sunny skies. /sb

Friday through Monday: The upper ridge will keep the region mild and dry into the end of the week. Warming temperatures will peak on Thursday and Friday. The forecast high temperatures are in the 60s for most locations with the Columbia Basin as warm as the low 70s. This would bring afternoon highs as much as 10 degrees above seasonal normal.

Our dry trend may end this weekend with unsettled weather making a return for parts of the Pacific Northwest. With a Canadian trough dropping into the US, some models are continuing to show the chance for showers in Washington and Idaho. These would bring a chance for precipitation most likely to the Idaho Panhandle and Cascades. However, this is with low confidence because some models are showing that the precipitation will remain to our east. The precipitation will likely be in the form of snow in the mountains and rain in the valleys. With cooler evening lows back into the 30s, we may see a rain/snow mix in lower elevations. The time and movement of these shortwaves plays a large role in the possibility for and type of weekend showers. Breezy winds may accompany the shortwaves. The Basin, Palouse, and Okanogan Valley look to be the targets of the stronger winds. Saturday and onward, temperatures will cool back into seasonal normals with highs in the 50s and low 60s and lows in the 30s. JS

AVIATION. 18Z TAFS: VFR conditions the next 24 hours. Southwest wind gusts of 15-25 kt expected at KGEG-KSFF-KCOE-KPUW-KMWH between 20-02z today, with gusts up to 25-30 kt at KEAT. Dang

PRELIMINARY POINT TEMPS/POPS. Spokane 58 30 61 35 66 39 / 0 0 0 0 0 0 Coeur d'Alene 57 30 58 34 64 38 / 0 0 0 0 0 0 Pullman 56 31 61 33 64 37 / 0 0 0 0 0 0 Lewiston 63 38 66 40 70 44 / 0 0 0 0 0 0 Colville 63 28 63 31 70 37 / 0 0 0 0 0 0 Sandpoint 56 29 56 31 62 36 / 0 0 0 0 0 0 Kellogg 53 30 58 33 61 36 / 0 0 0 0 0 0 Moses Lake 65 33 67 34 74 40 / 0 0 0 0 0 0 Wenatchee 65 34 66 42 72 45 / 0 0 0 0 0 0 Omak 63 33 66 38 70 41 / 0 0 0 0 0 0

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




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sandpoint, Sandpoint Airport, ID4 mi73 minWSW 510.00 miFair48°F28°F46%1016.6 hPa

Link to 5 minute data for KSZT

Wind History from SZT (wind in knots)
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Last 24hrE6S5SW9SW9
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1 day agoNE7NE5CalmCalmSE4CalmCalmNE3NE4NE5N4N5NE3CalmCalmCalmSW3CalmCalmCalmNE3CalmE5E6
2 days agoE3CalmE6E4E5NE8N8
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of PacificNorthwest    EDIT
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
Wind Forecast for Spokane, WA (15,3,4,5)
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Ground Weather Radar Station Spokane, WA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.