Issued by the National Weather Service at 11:32 am PST on November 22, 2009
Doppler radar and lightning detection data are indicating showers and isolated thunderstorms developing in the cold unstable air mass over the forecast area today. Some of these showers and isolated thunderstorms are producing small hail. These showers should diminish later this afternoon.
Today
Showers in the morning...then showers likely in the afternoon. Windy. Highs around 50. West wind 25 to 35 mph with gusts to 40 mph...decreasing to 10 to 20 mph in the afternoon.
Tonight
Mostly cloudy. A slight chance of showers in the evening. Lows around 45. Light wind becoming southeast 10 mph after midnight.
Monday
Mostly cloudy. Breezy. Highs around 55. South wind 15 to 25 mph.
Marine Forecast for Coastal Waters From Cascade Head To Florence Or Out 10 Nm-
Today W wind 20 to 25 kt with local gusts to 35 kt... easing to 15 to 20 kt with gusts to 25 kt in the afternoon. Combined seas 23 ft dominant period 12 seconds... subsiding to 18 ft in the afternoon. Showers likely late in the morning...then chance of showers in the afternoon.
Tonight SW wind 10 kt...becoming S 20 to 25 kt after midnight. Wind waves 1 foot...building to 5 ft after midnight. W swell 15 ft at 12 seconds. Slight chance of showers in the evening.
Mon S wind 20 to 25 kt with local gusts to 35 kt. Wind waves 6 ft. W swell 11 ft at 15 seconds. Slight chance of rain in the afternoon.
... High surf advisory in effect until 2 PM PST this afternoon for the South Washington... north and central Oregon coast...
The National Weather Service in Portland has issued a high surf advisory... which is in effect until 2 PM PST this afternoon.
Strong winds overnight have generated a large area of locally generated swell offshore. Expect west swells of 22 to 25 ft to move through the coastal surf zone this morning. Large swells will be along the north Oregon coast.
Seas will slowly subside late this morning and this afternoon.
Precautionary/preparedness actions...
A high surf advisory means that high surf will affect beaches in the advisory area... producing rip currents and localized beach erosion.
2009 Hurricane Coverage
High Surf Advisory