Marine Weather and Tide Forecast for Happy Camp, CA

MARINE
Updated 800 PM Monday, April 28, 2025...Gusty north winds and steep seas will persist over the waters south of Cape Blanco this evening. The strongest northerly winds and steepest seas will be found south of Cape Blanco. North winds weaken late tonight into Tuesday but areas of steep seas and gusty winds may continue from near Gold Beach southward.

Then north winds increase Tuesday night into Wednesday. This will bring a return of steep seas from near Coos Bay southward. Locally very steep seas are possible on Wednesday afternoon/evening south of Gold Beach. Winds and seas lower on Thursday. Then, an approaching front may bring steep swell and marine showers near the end of the week.



PREV DISCUSSION
/Issued 441 PM PDT Mon Apr 28 2025/

Updated Aviation Discussion.

DISCUSSION...With the exception of a weak front passing through on Tuesday, high pressure will be in control for much of the week.
Aside from some very light precipitation with this weak front, dry conditions will persist through the week with a warming trend that peaks on Thursday. A pattern similar to the one from this past weekend returns Friday through the weekend.

Cloud cover from this morning has scattered out, leaving the area under sunny skies. Some fair weather cumulus has developed over southeastern Lake and eastern Modoc Counties, and a thin layer of cirrus is streaming overhead. Otherwise, skies are clear with temperatures trending around 5 degrees warmer than this time yesterday. High pressure is building into the region today, and afternoon highs will end up in the upper 60s and low 70s for most west side valleys (75-80F in the lower Klamath Valley from Happy Camp to Somes Bar) and in the 60s over the East Side. Overall, fairly typical afternoon N-NW breezes can be expected area wide today that'll last through early evening.

Mid and high level clouds will increase overnight tonight into Tuesday ahead of a weak front expected on Tuesday. There will be some light precipitation associated with this front, with the best chances (25-50%) expected across northern areas (Roseburg/Crater Lake/Summer Lake northward) and across Lake/Modoc Counties early Tuesday. Where it does rain, precipitation amounts will generally only be a few hundreths at best, with maybe up to 0.10" for the higher peaks of Lake/Modoc Counties.

High pressure resumes control on Wednesday as the weak system exits the region. High temperatures will take another climb to above normal values, reaching 10 degrees above normal on Wednesday and 15 to 20 degrees above normal on Thursday. Expect cool (west side) to chilly (east side) mornings both days, but with nice, warm afternoons. With the peak of the warmth expected on Thursday, highs in the valleys west of the Cascades will fall in the 80-85F range (upper 80s lower Klamath). East Side locations will have highs largely in the mid and upper 70s. These values on Thursday could easily become the warmest temperatures of the year so far and will feel more like late June/early July than early May. We don't expect records to fall as current records for May 1st are in the low 90s/upper 80s, but these temperatures could fall in the top 5 warmest temperatures for the date.

The pattern remains progressive, however, so the ridge axis quickly shifts eastward Thursday night and a large scale trough approaches the region early Friday. This pattern change will look quite similar to the one experienced just this past weekend (and more similar to early March) with widespread rain, isolated thunderstorm chances and significantly cooler temperatures. In fact, afternoon temperatures will swing from 15-10 degrees above normal on Thursday to 10-15 below normal on Saturday! As the trough approaches the region on Friday, increasing moisture and instability ahead of the front will bring a slight chance (15-25%) for thunderstorms along and east of the Cascades Friday afternoon/evening. In addition to the thunderstorm chances, some gusty southwest winds are expected ahead of this front. Winds should stay below advisory criteria, but gusts of 25 to 35 mph will be common across the area.

This trough will elongate just offshore on Saturday, digging southward and cutting off a low that will move into central/southern California late Saturday into Sunday. This will maintain shower activity on Saturday as we remain in an area of upper level diffluence. This trough will gradually shift eastward into the Grate Basin on Sunday. Most areas will see dry conditions for Sunday, though showers will linger across southeastern areas (SE Lake/Modoc Counties). By the time this system moves off late Sunday, rainfall amounts of 0.25"-0.50" will be common across the area with up to 0.75" across the higher terrain. Snow levels will lower to around 4500-5000 ft Friday night into Saturday, reaching as low as 3500 ft Sunday morning. There could be few inches (1-3") of snow in the Cascades Friday night into Saturday, but the bulk of the precipitation should have pushed east into Lake/Modoc Counties by the time snow levels lower to around 3500 ft. Over that way, there could around 2-4" of accumulation in the Warners by the time this late-season system is done. /BR-y

AVIATION
29/00Z TAFs
Along the coast and just offshore. VFR conditions will continue through this evening. Guidance shows low clouds with MVFR and hovering close to IFR tonight, mainly north of Cape Blanco which could last until the end of the TAF period.
However, ceilings could improve to MVFR towards the end of the TAF period.

Inland, west of the Cascades, there's evidence suggesting low clouds will form along the south end of the Douglas County, towards the UMpqua Divide tonight, then filling in towards Roseburg late tonight with MVFR ceilings likely. A weak front will move into the area Tuesday morning, but it will do little, if any impact in terms of improving conditions. Also the terrain will be at least partly obscured Tuesday morning, then clouds will gradually diminish Tuesday afternoon with ceilings expected to improve.

South of the Umpqua Divide, including Medford, VFR conditions will continue through the TAF period.

East of the Cascades, VFR conditions will continue through the TAF period. -Petrucelli

MFR WATCHES/WARNINGS/ADVISORIES
OR
CA
None.

PACIFIC COASTAL WATERS...Small Craft Advisory until 5 AM PDT Tuesday for PZZ356-376.