Friday, July 25, 2014 07:25 AM
A warming trend is under way as high pressure over the southwestern U.S. expands westward over California. Thursday saw a slightly below-normal high temperature of 88°, with 91° being normal for this time of year. The low temperature Thursday morning dropped to 59°. Winds were generally out of the southwest at 2-6 mph, and a peak gust of 7 mph.
This morning is clear and mild, with temperatures running about 4° warmer than 24 hours ago. The low temperature this morning has been 63°. Some subtropical high clouds caught up in a southwesterly flow are spread across Central California. A weak weather system is passing through the Pacific Northwest, but is not affecting our region. Monsoonal moisture is making a push out of the southeast, but is currently restricted to Southern California.
Today in Magalia, we should see sunny skies and a high temperature reaching about 92° during the afternoon, and a low temperature tonight around 67°. Winds will be southwesterly by this afternoon at 5-9 mph. Calm winds by about sunset, becoming northeasterly at 1-4 mph tonight.
This weekend should see a warmer airmass over us as the ridge of high pressure continues to expand westward. Both days are forecast to reach a high temperature of 93°, and overnight lows in the upper 60°s. Winds should be southwesterly during the late morning through late afternoon hours at 5-9 mph.
Next week may see a slight increase in the onshore air flow on Monday, possibly bringing temperatures down slightly. By about Tuesday, the upper ridge axis is expected to be over The Great Basin, and an upper trough over the Eastern Pacific. Monsoon moisture should feed northward in a southerly upper air flow and spread the threat of showers and thunderstorms over the High Sierra on Tuesday. A small-scale trough is forecast to clip the far northwest corner of the state, bringing a threat of thunderstorm activity to the Shasta County mountains on Wednesday. The upper air flow looks as though it will shift more southwesterly by about Thursday, with will bring a drier airmass over Magalia, and keep any thunderstorms to the north and east of us. Above-normal temperatures are expected for next week. Have a great TGIF. Bob