Tuesday, August11, 2020
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Marine Weather and Tides
Selma, 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 6:15AMSunset 8:21PM Tuesday August 11, 2020 12:18 PM PDT (19:18 UTC) Moonrise 11:28PMMoonset 1:10PM Illumination 47% Phase: Third Quarter Moon; Moon at 22 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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PZZ356 Coastal Waters From Cape Blanco Or To Pt. St. George Ca Out 10 Nm- 851 Am Pdt Tue Aug 11 2020
.hazardous seas warning in effect through late tonight...
Today..N wind 15 to 20 kt...backing to nw 20 to 25 kt in the afternoon. Within 5 nm of brookings southward, nw wind 5 kt... Rising to 10 to 20 kt in the afternoon. Wind waves 4 to 6 ft. NW swell 5 to 6 ft at 12 seconds. Patchy fog in the morning.
Tonight..NW wind 20 to 25 kt...becoming N 5 to 15 kt after midnight. Within 5 nm of brookings southward, nw wind 10 to 20 kt in the evening...becoming variable less than 5 kt, then... Becoming S 5 kt early in the morning. Wind waves 3 to 6 ft. NW swell 5 to 6 ft at 11 seconds.
Wed..NW wind 10 to 20 kt. Within 5 nm of brookings southward, wind variable less than 5 kt...becoming nw 5 kt early in the afternoon, then...rising to 15 kt late in the afternoon. Wind waves 3 ft. NW swell 4 to 5 ft at 10 seconds.
Wed night..NW wind 20 kt...veering to N 10 to 15 kt after midnight. Within 5 nm of brookings southward, nw wind 15 kt... Becoming N 5 kt after midnight. Wind waves 3 to 4 ft. NW swell 3 to 4 ft.
Thu..N wind 10 to 20 kt. Within 5 nm of brookings southward, N wind 5 kt...backing to nw 10 to 15 kt in the afternoon. Wind waves 3 ft...building to 4 to 6 ft in the afternoon. Mixed swell nw 2 to 3 ft and S 1 to 2 ft.
Thu night..N wind 20 kt...easing to 10 kt after midnight. Within 5 nm of brookings southward, N wind 10 to 15 kt...veering to ne 5 kt after midnight. Wind waves 5 to 7 ft. Mixed swell nw 2 ft and S 1 ft.
Fri..N wind 20 kt...rising to 25 kt in the afternoon and evening, then...easing to 20 kt after midnight. Wind waves 6 to 7 ft...building to 8 ft in the evening, then...subsiding to 6 ft after midnight. Mixed swell nw 1 to 2 ft and S 1 ft.
Sat..NE wind 15 kt...backing to N in the afternoon and evening, then...becoming E 5 kt after midnight. Wind waves 5 to 6 ft... Subsiding to 3 ft after midnight. NW swell 3 to 4 ft.
PZZ300 851 Am Pdt Tue Aug 11 2020
Synopsis for the southern oregon coastal waters..Winds and seas will diminish from north to south today as the thermal trough weakens. The thermal trough will rebuild Wednesday evening, and strong gusty north winds and steep wind driven seas will return at that time. Conditions will deteriorate further Thursday with conditions hazardous to small craft spreading north of cape blanco and gales possible south of cape blanco. Winds and seas will peak Friday, then gradually diminish Saturday into Sunday.


7 Day Forecast for Marine Location Near Selma, OR
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location: 42.42, -123.95     debug


Area Discussion for - Medford, OR
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FXUS66 KMFR 111527 AFDMFR

Area Forecast Discussion National Weather Service Medford OR 827 AM PDT Tue Aug 11 2020

UPDATE. It will be a warm and breezy day today, with fire weather being the primary concern throughout today's shift. Isolated thunder is also possible east of Mt Shasta in Siskiyou and Modoc Counties this afternoon and evening, but all other areas should remain dry. We are also keeping an eye on smoke, which has overspread much of northern California and the East Side.

Heat and fire concerns will be the focus of forecast efforts for the coming week or so. No updates were necessary this morning. For more information on the forecast, see the previous discussion below. -BPN

AVIATION. For the 11/12Z TAF Cycle . VFR will prevail across the area through the TAF period. The exception will be along the coast early this morning. A narrow band of marine stratus hugs the coast north of Cape Blanco and is occasionally bringing LIFR/IFR conditions to KOTH. Another area of stratus lingers off the coast just south of Brookings and may occasionally lower conditions there as well. Otherwise, VFR conditions will persist today. Expect another round of breezy to gusty winds across the area today, especially east of the Cascades and inland valleys west of the Cascades. /BR-y

MARINE. Updated 830 AM PDT Tuesday 11 August 2020 . The thermal trough will continue to weaken today into Wednesday as an upper level trough swings through the area and disrupts the pattern. Conditions will gradually improve today, especially north of Cape Blanco. However, winds and seas will remain hazardous to small craft through tonight for areas south of Port Orford. Conditions will be improved for all areas for a brief time early Wednesday morning and afternoon.

The thermal trough will rebuild Wednesday evening and strengthen into Friday. Conditions hazardous to small craft will return south of Cape Blanco by late Wednesday afternoon. Winds and seas will build further Thursday afternoon into Friday. Conditions hazardous to small craft will likely spread north of Cape Blanco, and gales will be possible south of Cape Blanco. Winds and seas will peak Friday, then gradually diminish Saturday into Sunday.

PREV DISCUSSION. /Issued 430 AM PDT Tue Aug 11 2020/

Updated Aviation Discussion .

DISCUSSION . Even though temperatures will trend a few degrees lower today compared to yesterday, today will be a hot, dry and breezy day across the forecast area. It will be hot in absolute terms because we're very close (just passed) to the hottest time of the year, and also in relative terms because high temperatures are expected to be about 5 degrees above normal for most locations. A dry cold front will provide the "breezy" part of the day, with many locations gusting into the 30s(mph) east of the Cascades, and areas west of the Cascades will gust well into the 20s(mph). A Red Flag Warning continues for this afternoon for portions of Southern Klamath and Lake Counties while a Fire Weather Watch continues for tomorrow afternoon for portions of Modoc and Southern Lake Counties.

Model guidance is in pretty good agreement regarding thunderstorm chances today, with most data pointing towards Modoc, southern Lake, and far eastern Siskiyou Counties for the best chances for lightning.

Winds will trend lower, along with temperatures, on Wednesday, with the exception of areas well east of the Cascades where stiff afternoon breezes are expected again. Wednesday will feature the coolest temperatures of the week.

Cooler conditions will continue through Thursday (although afternoon high temperatures will still be around normal).

On Friday a warming trend will begin as a large upper ridge of high pressure builds over the Desert Southwest. At least a couple afternoons with 100+ degree temperatures are expected in the Rogue Valley. While hot conditions are very likely at this time, any details on thunderstorm potential that tends to follow heat events like this are fuzzy at this time. Thunderstorm chances could enter the picture as early as Saturday, but latest model data doesn't provide enough confidence to add them to the forecast. Stay tuned as we try to hone in on the likely evolution of the pattern ahead of us.

FIRE WEATHER . Updated 4AM PDT Tuesday 11 August 2020 . A weaker thermal trough has set up at the coast this morning. This has resulted in this morning's humidity similar to slightly higher than 24 hours ago. An approaching dry cool front will bring gusty winds and continued low humidity this afternoon and again Wednesday afternoon, and these are the two days we're most concerned with in terms of critical fire weather conditions this week. Isolated thunderstorms are expected in Northern California and southeast Lake this afternoon and a combination of dry/windy conditions east of the Cascades both today and Wednesday, resulting in critical fire weather conditions. West of the Cascades humidity will be near critical, and gusty northwest winds are expected.

Thunderstorms . Today there is higher confidence than yesterday for isolated thunderstorms to develop over eastern Siskiyou, Modoc and far southeast Lake Counties in the afternoon and evening. Any thunderstorms that do develop may not produce much rainfall.

Dry Humidities and Gusty Winds . Ahead of the dry frontal passage Today and Wednesday, gusty winds and low relative humidities are expected east of the Cascades. A Red Flag Warning is in effect for Oregon fire weather zones 624/625 for this afternoon and evening. These conditions are expected to continue into Wednesday and a Fire Weather Watch is in effect for zones 624/625 in Oregon as well as 285 in California. Compared to today, conditions on Wednesday look to be slightly cooler, but similarly dry and breezy to windy. Minimum relative humidity east of the Cascades on both days will generally be in the lower teens to as low as 8 percent with 15 to 25 mph winds gusting as high as 40 mph.

A warming trend with dry weather will follow during the second half of the week. -CC/Keene

MFR WATCHES/WARNINGS/ADVISORIES. OR . Red Flag Warning from 2 PM this afternoon to 9 PM PDT this evening for ORZ624-625. Fire Weather Watch from Wednesday afternoon through Wednesday evening for ORZ624-625.

CA . Fire Weather Watch from Wednesday afternoon through Wednesday evening for CAZ285.

Pacific Coastal Waters . Small Craft Advisory until 5 AM PDT Wednesday for PZZ356-376. Small Craft Advisory from 5 PM Wednesday to 5 PM PDT Thursday for PZZ356-376. Hazardous Seas Warning until 5 AM PDT Wednesday for PZZ356-376.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PORO3 - 9431647 - Port Orford, OR 36 mi49 min NNW 11 G 20 67°F 47°F1016.1 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 45 mi29 min S 5.8 G 9.7 51°F7 ft1015.1 hPa
CECC1 - 9419750 - Crescent City, CA 48 mi49 min SSE 5.1 G 7 51°F 59°F1014.7 hPa

Wind History for Port Orford, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brookings, Brookings Airport, OR30 mi23 minS 510.00 miMostly Cloudy56°F52°F87%1014.6 hPa

Link to 5 minute data for KBOK

Wind History from BOK (wind in knots)
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Last 24hrS55S5S7S5SE6S4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS4S4SW4S5
1 day agoN8
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6W94NW7NE10
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63463CalmCalmSE43SE4SE5Calm44SW5
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NW12NW123SE3SE5SE4CalmCalmCalmCalmN7NE10
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Tide / Current Tables for Wedderburn, Rogue River, Oregon
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Wedderburn
Click for Map
Tue -- 12:01 AM PDT     Moonrise
Tue -- 12:11 AM PDT     1.75 feet Low Tide
Tue -- 06:03 AM PDT     4.24 feet High Tide
Tue -- 06:21 AM PDT     Sunrise
Tue -- 09:47 AM PDT     Last Quarter
Tue -- 11:30 AM PDT     2.44 feet Low Tide
Tue -- 02:12 PM PDT     Moonset
Tue -- 05:59 PM PDT     5.77 feet High Tide
Tue -- 08:23 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.92.333.64.14.24.13.73.22.82.52.52.83.54.255.65.85.654.23.32.4

Tide / Current Tables for Brookings, Chetco Cove, Oregon
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Brookings
Click for Map
Tue -- 12:02 AM PDT     Moonrise
Tue -- 05:55 AM PDT     4.47 feet High Tide
Tue -- 06:21 AM PDT     Sunrise
Tue -- 09:47 AM PDT     Last Quarter
Tue -- 11:18 AM PDT     2.65 feet Low Tide
Tue -- 02:10 PM PDT     Moonset
Tue -- 05:51 PM PDT     6.07 feet High Tide
Tue -- 08:22 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.92.12.63.33.94.34.54.33.93.42.92.72.73.13.84.65.45.96.15.85.24.33.32.4

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.
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Wind Forecast for Medford, OR (15,3,4,5)
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Ground Weather Radar Station Medford, OR
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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.