Marine Weather and Tides
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 6:47AM||Sunset 5:52PM||Wednesday February 24, 2021 9:30 AM PST (17:30 UTC)||Moonrise 2:55PM||Moonset 5:38AM||Illumination 95%|
7 Day Forecast for Marine Location Near Chiloquin, ORHourly EDIT Help
Area Discussion for - Medford, OR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS66 KMFR 241709 AFDMFR
Area Forecast Discussion National Weather Service Medford OR 909 AM PST Wed Feb 24 2021
DISCUSSION. High pressure and broad north to northeast winds are affecting the forecast area today, and sunny skies will be in full effect today. Plenty of Vitamin D will be available! The air mass is cold (-4.4C at 5000 feet is in the coldest 10 percent for this time of year), so morning lows were below average. Temperatures are warming at the coast after some frosty mid-30s. Clouds will increase from the northwest Thursday, and precipitation chances increase over the Cascades and from the Umpqua Divide northward. Precipitation will be generally light. Models have overall trended warmer and generally drier for the system (more precipitation than Thu/Fri) moving in Friday night into Saturday morning, and right now it looks like snow levels will dip to around 2000-2500 feet. If any mountain passes see snowfall, they will likely be from the Umpqua Divide northward (Canyon Mt Pass for example), but impacts look minimal if any at this point based on model trends. Please see the previous forecast discussion below for more details.
AVIATION. For the 24/12Z TAF Cycle . Over the coastal waters, along the coast, and over the Umpqua Basin . VFR with areas of IFR and local LIFR cigs/vis in low clouds and fog along with areas of terrain obscurations through late this morning, then VFR conditions will prevail through Wednesday evening. Elsewhere, VFR conditions are expected through this evening. Local MVFR conditions may develop tonight along the coast and into the Umpqua. Then areas of MVFR cigs will develop Thursday morning from the Cascades west as a weak front approaches, and higher terrain will become obscured.
MARINE. Updated 800 AM PST Wednesday 24 Feb 2021 . Offshore high pressure and a thermal trough near the coast will support gusty north winds and steep seas south of Cape Blanco. Steep seas will also affect the northern waters through tonight due to moderate northwest swell. Winds will weaken Thursday as a weak front moves through, then strengthen again late Friday and Saturday. Seas will quickly build late Thursday and Thursday night as heavy long period northwest swell builds into the waters, peaking early Friday morning at 16 to 21 feet at 16 seconds.
High surf will be another concern during this time period. Current projections show surf between 20 and 25 feet late Thursday evening through Friday afternoon.
Northwest swell will gradually diminish Friday evening through Saturday night. Meanwhile another front will move into the waters Friday evening followed by increasing northwest winds Friday night into Saturday morning. Winds will shift northerly Saturday, but will remain moderate south of Cape Blanco Saturday afternoon as strong offshore high pressure sets up along with a developing thermal trough along the southern Oregon coast. North winds will gradually lower Saturday night.
PREV DISCUSSION. /Issued 538 AM PST Wed Feb 24 2021/
DISCUSSION . Some light showers has caused a few hundreths of rain along the coast and in the hills north of the Umpqua Divide. The cloud cover and mixing does lower the chance for frost along the coast, but not eliminate it all together, so will allow the frost advisory to continue. The increase in moisture may be the difference maker in which valleys have fog form with the dry airmass that has moved into the region. Have removed the mention of patchy fog in the Illinois and Rogue valley. The Illinois Valley does have higher RHs than the Rogue valley currently (95% and 70% respectively), so if one of the two were to develop some sunrise surprise fog it would much more likely be the Illinois. In the Umpqua and Coquille Valleys, fueled by this latest bit of rain, have left the mention of patchy fog. The limiting factor here will be if the valleys cool off enough to reach saturation. It seems likely though, at least in scattered pockets.
The one element where edits were made was to winds during the next approaching front. Ridges and valleys west of the Cascades will be breezy Thursday as the main front moves through and again on Friday afternoon when a strong shortwave moves through the PNW. The strongest winds will remain aloft, so only in the afternoons when the best mixing occur will the strongest winds really be felt. This will keep even the headlands of the coast with relatively benign winds considering a front is passing. Exposed terrain above 5000-5500 feet will be almost constantly impacted by strong west winds for 36-48 hrs Thursday afternoon through Saturday morning. Gusts along the Cascades and Winter Rim area could easily experience 50+ mph gusts. The latest wind updates did bring advisory level wind gusts to the Summer Lake, highway 31, area of Lake County Thursday and Friday afternoons. As mentioned, do not anticipate these winds being constant and instead will porpoise. Will let the day shift take a second look at it before an advisory is or isn't issued.
The remainder of the forecast is on track. -Miles
MFR WATCHES/WARNINGS/ADVISORIES. OR . CA . None.
Pacific Coastal Waters . Small Craft Advisory until 4 AM PST Thursday for PZZ350-356-370-376. Hazardous Seas Watch from Thursday afternoon through Friday evening for PZZ350-356-370-376.
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.
|Klamath Falls International Airport, OR||42 mi||38 min||NNE 3||10.00 mi||Fair||31°F||15°F||52%||1031.4 hPa|
Link to 5 minute data for KLMT
Wind History from LMT (wind in knots)
|1 day ago||Calm||Calm||SW||SW||W||NW||N||NW||W||NW|
|2 days ago||S||S||S||NW||Calm||SW||SW||Calm||Calm||SE||SW||SE||SE||Calm||Calm||Calm||NW||E||Calm||E||Calm||Calm||S |
EDIT Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map(on/off)  Help Weather Map
GEOS Local Image of PacificNorthwest EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop
Other links: GEOS-West Contential US Full GOES-East
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
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.