Winds were whipping flags and ripping the remaining leaves from trees Thursday as the Sacramento region experienced a breezy afternoon.
Sacramento airports had all registered winds blowing at more than 20 mph by noon: Sacramento International Airport, 33 mph with gusts to 43, Mather Airport, 21 mph with gusts to 29, Sacramento Executive Airport, 23 mph with gusts to 33, and McClellan Airport, 22 mph with gusts to 28.
The National Weather Service notes that the gusty conditions are caused by high pressure over Oregon and Nevada. Winds blow from high pressure to low pressure, much like going from a hilltop to a valley on a topographic map.
A wind advisory remains in effect Thursday until 10 p.m. with moderate to strong north to northeast winds. A wind advisory means that sustained winds of 25 mph or gusts of 40 mph or more are expected.
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The detailed, 7-day forecast for the Sacramento region from the NWS calls for Christmas day to be sunny with a high near 63 degrees:
Today: Sunny, with a high near 58. Breezy, with a north northwest wind 18 to 26 mph, with gusts as high as 37 mph.
Tonight: Clear, with a low around 35. Breezy, with a north northwest wind 16 to 22 mph, with gusts as high as 31 mph.
Friday: Sunny, with a high near 57. Northwest wind 5 to 8 mph.
Friday night: Mostly clear, with a low around 40. West wind around 6 mph becoming calm in the evening.
Saturday: Sunny, with a high near 63. Light and variable wind becoming northwest 5 to 8 mph in the morning.
Saturday night: Clear, with a low around 40.
Sunday: Sunny, with a high near 61.
Sunday night: Mostly clear, with a low around 39.
Monday: Sunny, with a high near 63.
Monday night: Partly cloudy, with a low around 41.
Tuesday: Mostly sunny, with a high near 63.
Tuesday night: Mostly clear, with a low around 41.
Christmas Day: Sunny, with a high near 63.