textproduct: Eureka

SYNOPSIS

More scattered showers and isolated thunderstorms are expected across the area Friday. Saturday is expected to see more widespread rain and mountain snow. Sunday the showers are expected to come to an end as the cold air moves in. A chilly start to the week is expected with frost or freezing temperatures possible in the colder spots.

Long term

Much colder temperatures are likely during and and behind this frontal passage. Near-freezing to sub-freezing temperatures are forecast, especially Sunday, Monday, and Tuesday mornings. Frost advisories and/or freeze warnings might be needed. Looking towards next week, about half of ensemble members show at least weak ridging developing by mid next week, with the other half showing the continuation of the troughing (wet) pattern. Stay tuned! JB

AVIATION

Conditions continue to vary widely as showers pass through the aviation sites. When there are breaks in the showers this allows low clouds and fog to develop. Shower coverage is expected to increase later this morning and afternoon. There will also be the potential for thunderstorms once again. The highest chance will be over the inland areas including KUKI. They may also make it out to the coast, but confidence is lower on this so have held off on adding them to the forecast. Tonight showers are expected to diminish in coverage, but this may allow more low clouds to form. MKK

MARINE

The approach of a cutoff low brought dangerous lightning, hail and erratic gusty winds to area waters through Thursday early evening. Most of the severe weather was inland but a Marine Weather Statement was issued for the southern outer waters Thursday morning to warn of the hazard. Model data also strongly suggests that Friday morning will bring another round of showers and thunderstorms with a similar threat of lightning, small hail and erratic wind gusts. All area waters from Point St. George down to Point Arena are susceptible to hazardous marine conditions through the early evening on Saturday. Otherwise, there are NW swells around 15 seconds with wave heights 3- 5ft but conditions between the pressure systems will be fairly benign.

Saturday an area of low pressure is expected to approach the coast from the northwest and move through the waters off the Mendocino coast. Confidence is low on the strength and track of the low which could lead to stronger than expected winds. /EYS/MKK

EKA WATCHES/WARNINGS/ADVISORIES

CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... None.