May 21, 2021 By the standards of May 21, it is just plain cold out there this morning as we return to heavy jacket weather. Ivanhoe, Lindsay, Reedley, Lindcove, and Exeter each reported a low of 40 degrees this morning with most other ag locations in the low to mid 40s. the freezing level has…
Author: John Hibler
May 20, 2021/report
May 20, 2021 Very strong differences in pressure between San Francisco and Las Vegas continue. Couple that with strong jet stream energy above central California and you have the recipe for strong, gusty winds, especially along the center and west side of the valley. The current altimeter reading at SFO is 30.03 inches of mercury…
Doc appointment
May 19, 2021 John has a last minute, early morning doctor appointment Thursday, May 20. We will be putting out an abbreviated report later in the morning. John also has an early morning PET scan on May 25. We’d appreciate any prayers you care to offer that the scan is clear. Thank you, John and…
May 19, 2021/report
May 19, 2021 A developing low is centered over Washington state this morning and has created a trough into northern and central California. At the surface, large differences in pressure exists between off shore northern California and the Desert Southwest. The current reading at Medford, Oregon is 30.06 inches of mercury while at Las Vegas…
May 18, 2021/report
May 18, 2021 Weak upper level high pressure has shifted eastward into California while the low has now moved into New Mexico. There remains a strong difference in surface pressure between northern California and the Desert Southwest. The current barometric reading at SFO is 30.09 while Las Vegas is reporting 29.77 inches of mercury. This…
May 17, 2021/report
May 17, 2021 The closed low which resulted in much cooler temperatures over the weekend, has accelerated eastward into northern Arizona. Even so, there’s still a fairly significant difference in surface pressure between San Francisco and Las Vegas. The current altimeter reading at SFO is at 30.03 inches of mercury while at Las Vegas the…
May 15, 2021/report
May 15, 2021 Satellite imagery is quite interesting this morning. the low cloud deck along the coast extends all the way to the last range of mountains separating the valley from the Coast Range. Low clouds moved through the Delta and into the lower Sacramento Valley. A strong push of marine air is currently moving…
May 14, 2021/report
May 14, 2021 The latest short term model information shows slow weakening of the upper high aloft as a weak trough of low pressure centers over Oregon and northwest California. The marine layer has deepened to 2,200 feet with a weak flow of marine air through the Delta and Pacheco Pass. This should be enough…
May 13, 2021/report
May 13, 2021 There are subtle changes occurring in the overall weather pattern. They will not be noticeable today or even Friday. However, the strong upper high is beginning to weaken slightly. A thermal trough of low pressure currently stretches from central California to the Colorado River Valley. This has allowed the marine layer to…
May 12, 2021/report
May 12, 2021 Strong upper level high pressure is centered just off the California coast this morning. surface pressure remains essentially flat with both San Francisco and Las Vegas reporting identical altimeter readings of 29.94. Midsummer conditions will prevail through Thursday as the hottest locations on the valley floor will be nudging the century mark. …