The storm moving south through California today turns the corner and moves east Thursday and Thursday night. This is a little slower than a day or two ago.
This storm does look like it delivers a pretty good amount of precipitation whether you live in the deserts or the mountains. It has been a very dry fall/early winter so far that this storm is very welcomed. Since Oct. 1, Phoenix has only had 3 percent of its normal precipitation, Tucson 2 percent and even Flagstaff only half its normal rain and snow.
Rain and snow will develop from west to east across mainly Thursday night and continue into Friday morning before tapering and ending from west to east during the day Friday. The lower elevations get on average 0.25 to 0.50 of an inch of rain with perhaps double that in the Rim Country below the snow level. Speaking of snow. Snow levels start on the high side, around 6,500 to 7,000 feet but then drop to 5,000 to 5,500 feet by late Thursday night and Friday morning. Above 7,000 to 7,500 feet, expect 7-14 inches of snow with accumulations of 2-6 inches down to 6,000 feet. Some lighter snow could accumulate in spots below that behind the main band of precipitation.
As of the end of June there had been no named storms in the Eastern Pacific basin.
This is some serious and dangerous heat. Outdoor activity is just not at all recommended during the daytime.
A strong ridge of high pressure in the West brings the highest heat of the season so far to a large area.
Combine the cold with the wind and some precipitation and there is a real danger of hypothermia.
Any shower and thunderstorm can contain heavy downpours, heavy enough to cause temporary, low-lying ponding.
According to all long-range models, the warmest area in North America compared to average will be over the Northwest.