Forecast Discussions mentioning any of "ACARS" "MDCRS" "AIRCRAFT" "TAMDAR" "AMDAR" "WVSS" received at GSD on 02/17/20

National Weather Service Eureka CA
340 PM PST Sun Feb 16 2020 .SYNOPSIS...Shower activity is diminishing rapidly across NW CA with another several days of mild and virtually rain free weather expected for the remainder of next week. && .DISCUSSION...Today`s rain activity will be replaced by gusty northerly winds behind the weak front that moved through early today. Widespread clearing is expected after tonight, however morning valley clouds and even some episodes of stratus for portions of the coast remain possible through next week. Gusty northerlies will continue through at least Monday, strongest along the coast. Winds are then expected to weaken and veer offshore as an upper- level low passes to the south. This will likely result in a mild warming and drying trend across the region during mid- week. Although forecast models are depicting some additional rain next weekend...this February is evolving as one of the driest on record. Including today`s rain...the total for this February is only a few hundredths above the 1923 record in Eureka of 0.50 inches. && .AVIATION...Drier northerly surface flow offshore the Oregon coast has resulted in improvement at KCEC this afternoon. Cigs and vsbys may fluctuate between IFR and VFR this evening before drier ENE winds develop overnight and early Monday morning. At KACV, IFR/LIFR has persisted through the day. Low level profiles for KACV are favorable for redevelopment of IFR/LIFR ceilings and vsbys this evening. It may fluctuate around between VFR and LIFR all night before drier ENE winds take over early Monday morning and conditions improve. For the interior valleys, the moist push will result in widespread low clouds and fog tonight as NE winds develop over the ridges. Conditions are expected to improve Monday afternoon. Low clouds have been forming over the coastal ranges to the NW of KUKI this afternoon. Some of these may stray over the airfield in NW wind flow this evening. Confidence is not high KUKI will see persistent MVFR cigs with BUFKIT profiles indicating drying after 6z. Thus, VFR is forecast to prevail at KUKI through the period, with perhaps some low level turbulence for small aircraft this evening. && .MARINE...Northerly winds and steep seas will increase tonight through Monday as high pressure builds offshore and a trough develops near the coast. Models remain in good agreement with a steady increase in speeds and steep wind-driven waves tonight through Monday night. There is a potential for gale force gusts late Monday afternoon through Monday night. A gale warning is in effect for these gusts. Very steep seas around 13-15 feet are also expected 10-60nm from shore Monday evening and overnight. North winds and steep seas should diminish on Tuesday, however seas will most likely remain steep and hazardous, especially in the outer waters. Conditions will lay down more substantially around mid week for a day or two of tranquil marine conditions. WNW swells will continue to propagate into NW California coastal waters through next week. With short period wave energy expected to drop off mid week, the threat of sneaker waves will increase. && .EKA WATCHES/WARNINGS/ADVISORIES... CA...None. NORTHWEST CALIFORNIA COASTAL WATERS...Small Craft Advisory until 3 AM PST Wednesday for PZZ450. Small Craft Advisory until 3 PM PST Monday for PZZ470. Gale Warning from 3 PM Monday to 3 AM PST Tuesday for PZZ470-475. Small Craft Advisory from 7 PM this evening to 9 AM PST Tuesday for PZZ455. Small Craft Advisory from 7 PM this evening to 3 PM PST Monday for PZZ475. && $$ Visit us at Follow us on Facebook and Twitter at: For forecast zone information see the forecast zone map online: