This report last updated
Tuesday, May 05, 2015 07:26 AM
We are seeing a cooler morning today as a slow moving area of low pressure dropping out of the Gulf of Alaska and introducing cooler air off the ocean as the Delta Breeze pushes inland, along with a general cooling of the atmosphere. The marine layer is running about 3000' this morning, so it is having an influence in Magalia. The low temperature so far this morning has been 50°. Winds overnight have been running 1-2 mph, and a peak gust of 3 mph.
Today should see clear to partly cloudy skies as a trough begins to deepen along the west coast. Yesterday's high temperature reached 76°, and the cooler air will only allow today's high to reach a predicted 71°. The low tonight may drop to about 48°. There is a very slight 5% chance that a stray rain shower could occur in Magalia today, but is highly unlikely as the upper air flow is out of the west and should push any high mountain thunderstorms to the eastern slopes. Winds will pick up out of the southwest later this morning into the afternoon at 5-7 mph, becoming light and variable tonight.
Wednesday may see a better shot at showers or thundershowers in Magalia as the low to our north continues to slowly drop south and destabilize the atmosphere a bit. The current forecast has a 5% chance of measurable precipitation in the early morning hours, increasing to a 20% chance by the afternoon, then back to a 10% chance Wednesday evening. There is also a slight chance of a thunderstorm during the afternoon hours, but most of the thunderstorm activity will likely be confined to the high mountain areas. As the low nears, a cooler air mass will spread across the region and continue the cooling trend. The afternoon high temperature is forecast to reach about 67°, and the low temperature Wednesday night near 48°. Winds should be southwesterly at 5-10 mph during the afternoon, becoming northeasterly Wednesday night.
Thursday may see a 15% to 20% chance of precipitation during the day, slowly decreasing by late afternoon into the evening as the low pressure area drops south toward Southern California. The snow level may drop down to near 5000' by Thursday morning. The high temperature on Thursday is only expected to reach about 66°. Friday may see some wraparound precipitation occur, with a 20% chance of a shower during the afternoon. By Saturday, most of the shower activity should be south of Tahoe. A weak wave will brush the far northern areas of the state and bring a threat of showers over the northern mountains, with only a slight chance of precipitation here in Magalia. Have a great Tuesday. Bob