Wednesday, February21, 2018 L-36.com


Marine Weather and Tides
Boise City, ID

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:30AMSunset 6:25PM Wednesday February 21, 2018 5:45 PM MST (00:45 UTC) Moonrise 10:45AMMoonset 12:00AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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 Boise City, ID
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location: 43.6, -116.25     debug


Area Discussion for - Boise, ID
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Fxus65 kboi 212211
afdboi
area forecast discussion
national weather service boise id
311 pm mst Wed feb 21 2018

Short term Tonight through Friday... An upper trough dropping
into the pacific northwest will bring a period of light snow to
the region tonight into Thursday. Models have been consistent in
showing a band of snow developing across southeast oregon tonight,
transitioning into southwest idaho by sunrise. However confidence
in the track of the developing precipitation band is lowest as it
moves into southwest idaho. The heaviest snow will fall across a
fairly narrow area from s-central harney and malhuer counties,
into the owyhee mountains. In southwest idaho the focus of
snowfall will cross the treasure valley between ontario and
mountain home and extend northeastward into the central boise
mountains. This system will be working with a limited amount of
moisture (pw values are in the 10-20th percentile during this
event) so have weighted QPF (and thus snowfall) amounts toward
model solutions with lower amounts. Temperatures will likely warm
above freezing at sites below 4000 feet Wednesday afternoon,
though precipitation type will stay all snow through the event.

Have issued an advisory for southern and western zones starting
tonight.

The upper low moves into eastern idaho Thursday night, which will
cut off the precipitation. Friday is dry but continued cold under
a passing short wave ridge. Temperatures continue to run 10-15
degrees below normal through Friday.

Long term Friday night through Wednesday... The northern
intermountain region will remain under northwest flow aloft, with
unsettled weather and below normal temperatures. The next upper
level trough from the gulf of alaska will spread snow showers
across our area Saturday and Saturday night. Snowfall in the
valleys is expected to be around an inch, with heavier amounts in
the mountains. On Sunday lower elevations of southwest idaho and
southeast oregon will see brief improvement, with snow showers
decreasing to isolated and partly cloudy skies. Temperatures will
average from 5 to 10 degrees below normal.

Monday evening through Thursday morning... Active troughing
pattern holding on and continuing to facilitate the ushering in of
periodic trough-ridge couplets into and across the cwa. The gfs
and ec models somewhat agree at the start then quickly part ways
by Tuesday evening with the GFS being the more active. Mostly
cloudy conditions with widespread snow during most of the time
frame associated with these translating disturbances with brief
periods of sunnier skies and milder weather in between. Mild
northwest winds for the most part becoming breezy with passing
frontal systems. Temperatures averaging around 5-8 degrees below
normal.

Aviation Vfr through this evening except for local MVFR
ceilings with isolated snow showers. Deteriorating conditions after
06z with snow becoming widespread across southeast oregon and the
central idaho mountains and continuing through Thursday. On Thursday
snow spreading east through the snake river valley, but decreasing
to isolated showers at kbno and kbke. Surface winds variable under
10 kts, then variable 5-15 kts after 06z. Winds aloft at 10k ft msl
southwest 10-20 kts.

Boi watches warnings advisories
Id... Winter weather advisory from 5 am to 11 am mst Thursday idz030.

Winter weather advisory from 5 am to 5 pm mst Thursday idz015.

Winter weather advisory from 11 pm this evening to 5 pm mst
Thursday idz029.

Or... Winter weather advisory from 11 pm mst 10 pm pst this evening
to 11 am mst 10 am pst Thursday orz061-063.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boise Air Terminal, ID2 mi53 minW 310.00 miOvercast35°F10°F37%1021.3 hPa
Nampa Municipal Airport, ID15 mi51 minNW 610.00 miOvercast34°F17°F51%1020 hPa
Caldwell - Caldwell Industrial Airport, ID21 mi50 minW 510.00 miOvercast32°F19°F59%1023.2 hPa

Wind History from BOI (wind in knots)
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Last 24hrSE4SE7SE7E9SE8SE9SE10SE7SE8SE9SE9SE11SE9SE10SE9SE9SE11E5E7SE6S33CalmW3
1 day agoNW14
G26
NW17
G25
NW14
G25
NW15NW12W10NW13W9--NW10W6NW5W5NW4NW4CalmCalmNE4NW6--NW7CalmN43
2 days agoN14NE3CalmNE4S3W5E3CalmCalmE3CalmW5NW5NW4CalmNW9NW14NW13NW15NW17
G25
NW17
G25
NW20
G27
NW21
G27
NW19
G29

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Boise, ID (19,4,5,8)
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Ground Weather Radar Station Boise, ID
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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 numerious 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.