Category: Forecast

We will be out of the office Monday, May 30. Reports will resume Tuesday, May 31. Have a safe holiday weekend.     May 28, 2022 There is a 12 millibar difference in pressure between San Francisco and Las Vegas at this hour. This is resulting in winds out of the northwest at 10 to…

Temperatures today will drop by a good 10 to 13 degrees  over  yesterday’s readings. The upper  high responsible for  the short lived heat wave is now moving into the middle of the country while a trough of low pressure extends from British Columbia down into northern and central California. Roughly an 8 millibar difference in…

The dome of upper level high pressure responsible for widespread triple digits yesterday is already shifting into the Great Basin. High resolution  model information is indicating most locations will heat into the upper 90s today. Most of this will be due to synoptic cooling, then on Friday, pressures will fall over the interior, tugging the…

The  correct recipe for a very hot day is now in place. At the upper levels of the atmosphere, high pressure is right overhead. Couple that with a weak off shore flow and weak down slope heating will be the result off the Sierra Nevada and Tehachapi Mountains. The altimeter reading at Las Vegas currently…

May 24, 2022 Upper level high pressure is centered roughly 500 miles off the central coast with the eastern flank of the high over California and the Pacific Northwest. Significant warming is taking place at all levels of the atmosphere. The freezing level over Oakland has risen to just under 16,000 feet. Satellite imagery shows…

May 23, 2022 Almost every year, our first triple digit temperatures arrive in mid to late May and this year will be no exception. Temperatures during this short lived heat wave will peak Wednesday when readings will range between 100 and 105 for the first time this year. This morning, readings are only 2 to…

May 21, 2022 Temperatures yesterday afternoon showed significant cooling as readings dropped into the lower 80s. If you recall, there was nearly a 15 millibar difference in pressure between San Francisco and Las Vegas. As of the time of this writing, the pressure difference has totally vanished with only a 1 millibar difference showing up.…

May 20, 2022 A strong trough of low pressure has carved itself out over the northern Rockies southward into the Great Basin while a surface low is centered over southern Nevada. In the meantime, upper level high pressure is building off shore, creating a strong difference in pressure between off shore northern California and the…

May 19, 2022 Upper level high pressure continues to push eastward over California from its off shore center. The latest balloon sounding this morning over Oakland indicates a freezing level now up to a summer type reading of 15,100 feet. The descending motion of the atmosphere underneath the high has crushed the marine layer. Winds…

May 18, 2022 Since there is no active weather, it’s just a matter of temperature forecasting. In the short term, readings will warm considerably today then will tack on a few more degrees Thursday. Upper level high pressure over the eastern Pacific extends inland over California. The balloon sounding over Vandenberg AFB a few hours…