Tuesday, March31, 2020
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Marine Weather and Tides
Bandon, OR

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 6:57AMSunset 7:44PM Tuesday March 31, 2020 12:04 PM PDT (19:04 UTC) Moonrise 10:19AMMoonset 1:08AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ310 Coos bay bar- coastal waters from cape blanco or to pt. St. George ca out 10 nm- waters from cape blanco or to pt. St. George ca from 10 to 60 nm- 134 pm pdt Wed may 29 2013 a long-duration moderate to strong north wind event is expected to last from this weekend into early next week. Winds should begin to increase Friday into Saturday...peaking Sunday with storm force wind gusts possible. Very steep and hazardous waves will accompany this wind event and mariners should prepare for dangerous conditions at sea. The strongest winds and highest seas will occur beyond 5 nm from shore.
PZZ300 809 Am Pdt Tue Mar 31 2020
Synopsis for the southern oregon coastal waters..Moderate westerly winds will ease through Tuesday while a northwest swell builds to a peak around mid-day. Seas will then remain steep into Wednesday morning while slowly diminishing. The diminishing trend is likely to continue into Friday under weak high pressure. Uncertainty in the forecast remains high from Friday onward, though the first in a new series of disturbances is likely at the end of the week.


7 Day Forecast for Marine Location Near Bandon, OR
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location: 43.12, -124.41     debug


Area Discussion for - Medford, OR
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FXUS66 KMFR 311634 AFDMFR

Area Forecast Discussion National Weather Service Medford OR 934 AM PDT Tue Mar 31 2020

UPDATE. No major changes are needed this morning, as the current forecast appears on track. Wind and winter weather headlines will expire at 11 AM, although some light snow is expected to continue throughout the rest of the day.

Fore more details and the rest of the forecast, see the previous discussion below. -BPN

AVIATION. For the 31/12Z TAF Cycle . Widespread showers will continue through Tuesday afternoon, decreasing Tuesday evening. MVFR conditions will be widespread Tuesday morning, followed by a mix of MVFR/VFR Tuesday afternoon, then mainly VFR Tuesday evening. Conditions could temporarily lower to IFR in the heaviest showers, especially near the coast. Strong gusty winds will continue across the higher terrain and east of the Cascades and lower late Tuesday morning becoming breezy to gusty Tuesday afternoon. Areas of low level wind shear are possible east of the Southern Oregon Cascades through tonight.

MARINE. Updated 830 AM PDT Tuesday 31 March 2020 . Moderate westerly winds will ease through Tuesday while a northwest swell builds to a peak around mid-day. Seas will then remain steep into Wednesday morning while slowly diminishing. The diminishing trend is likely to continue into Friday under weak high pressure. Uncertainty in the forecast remains high from Friday onward, though the first in a new series of disturbances is likely at the end of the week.

PREV DISCUSSION. /Issued 434 AM PDT Tue Mar 31 2020/

DISCUSSION . Southwest flow will become increasingly more westerly this morning and then northwesterly this afternoon into this evening across most of the area. This will spread more rainfall into some areas, such as the Rogue Valley, that have not gotten much from this low pressure system, thus far.

Most of the west side, from the coastal counties into Josephine county, western Siskiyou County, and the Cascades of eastern Douglas County, have seen significant precipitation in the past 24 hours. 24 snowfall per the Annie Springs SNOTEL has been 17 inches, around 15 inches at Summit Lake, and about 7 inches at Diamond Lake. While amounts have varied quite a bit with elevation even in the areas that have seen a lot of precipitation- with the higher totals at the higher elevations- there have been many 24 hour reports of 1 to as much as 2.5 inches from the coastal ranges into the Oregon Cascades. Meanwhile, many areas in the Klamath Basin and in the valleys of Jackson County have seen less than a tenth of an inch, thus far.

A secondary cold front pushing across the west side this morning is likely to provide a healthy round of showers even in the places that have been mostly missed, thus far. Even the Bear Creek portion of the Rogue Valley is likely to get 0.10"-0.25" by noon. Snow levels will gradually fall from the 4500-5500 foot range this morning down to the 2500-3500 foot range this evening. As the snow levels drop, however, precipitation amounts will become lighter.

Tonight into Wednesday models suggest light, spitty type precipitation over NW portions of the forecast area, though the ECMWF indicates a significant uptick in rainfall rates Wednesday afternoon centered on Coos County. We'll have to keep an eye on that as there is a lot of cold air in the mid-levels to support a period of enhanced showers.

Thursday into Friday we'll see an overall break in the precipitation except for spits and sprinkles mainly in the coastal counties inland into Douglas County. Mornings are likely to be chilly for this time of the year- probably around 5-10 degrees below the 1981-2010 averages. Thus, we could see some frost near the coast and freezing temperatures for many inland locations where there are enough breaks in the cloud cover.

This next weekend is looking pretty wet per the latest round of numerical models runs overnight. There are some differences in the guidance regarding how far south the initial low pressure system tracks. The GFS suggests it will end up in NorCal, whereas the ECMWF deepens the low as it moves into western Oregon. Both models suggest a secondary shortwave trough sliding in from the NW Sunday into Monday bringing a good opportunity for wetting precipitation.

Thereafter, models diverge a bit, with the GEFS suggesting another significant double barreled low pressure system affecting us Wed-Thu of next week, while the EC shows much less precipitation.

All in all, these low pressure systems do not look unusually strong, but rather wet enough to bring beneficial rains to lower elevations, a mix of rain and snow between 3kft and 6kft, and significant snowfall above 6kft. Given water year deficits, we can certainly use this wet weather for the good of our hydrologic system and all that depend on it. -BTL

MFR WATCHES/WARNINGS/ADVISORIES. OR . Winter Weather Advisory until 11 AM PDT this morning for ORZ030. Wind Advisory until 11 AM PDT this morning for ORZ030-031. Winter Weather Advisory until 11 AM PDT this morning for ORZ028. Winter Storm Warning until 11 AM PDT this morning for ORZ027. Winter Weather Advisory until 11 AM PDT this morning for ORZ027.

CA . None.

Pacific Coastal Waters . Small Craft Advisory until 11 AM PDT Wednesday for PZZ350-356-370-376.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SNTO3 12 mi95 min WSW 1.9 49°F 1023 hPa45°F
46128 14 mi65 min 46°F 50°F
CHAO3 - 9432780 - Charleston, OR 16 mi89 min W 8 G 13 50°F1021.9 hPa
PORO3 - 9431647 - Port Orford, OR 27 mi65 min Calm G 2.9 52°F 50°F1023.9 hPa (+1.4)
46229 - UMPQUA OFFSHORE, OR (139) 46 mi35 min 49°F12 ft

Wind History for Charleston, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Oregon Regional Airport, OR23 mi69 minWNW 1010.00 miOvercast49°F41°F74%1022.2 hPa

Link to 5 minute data for KOTH

Wind History from OTH (wind in knots)
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Tide / Current Tables for Bandon, Coquille River, Oregon
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Bandon
Click for Map
Tue -- 02:08 AM PDT     Moonset
Tue -- 04:36 AM PDT     6.06 feet High Tide
Tue -- 07:00 AM PDT     Sunrise
Tue -- 11:19 AM PDT     Moonrise
Tue -- 12:12 PM PDT     0.54 feet Low Tide
Tue -- 07:10 PM PDT     4.48 feet High Tide
Tue -- 07:43 PM PDT     Sunset
Tue -- 11:36 PM PDT     3.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.444.85.5665.64.93.82.61.60.90.50.71.22.133.74.34.54.443.63.3

Tide / Current Tables for Charleston, Oregon
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Charleston
Click for Map
Tue -- 02:08 AM PDT     Moonset
Tue -- 04:47 AM PDT     6.84 feet High Tide
Tue -- 06:59 AM PDT     Sunrise
Tue -- 11:18 AM PDT     Moonrise
Tue -- 12:08 PM PDT     0.68 feet Low Tide
Tue -- 06:59 PM PDT     5.13 feet High Tide
Tue -- 07:43 PM PDT     Sunset
Tue -- 11:42 PM PDT     3.70 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.84.45.36.16.76.86.55.64.43.11.910.70.91.52.53.54.44.95.154.64.13.8

Weather Map
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wmap_P
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 Medford, OR (15,3,4,5)
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Ground Weather Radar Station Medford, OR
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weather_mapweather_map weather_map

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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.