Yes, It’s coming: Storm #37

The south edge of the cold Pacific storm moves slowly south, along which a thin frontal cloud band containing hardly any moisture occasionally flares up. The Sierras wring out its juice pretty good.


UPDATE: Day 3 of this storm event on the West Coast, and it finally its southern edge arrives in Fresno, with so little southward momentum, it’s practically stationary. This storm is basically a blast of cold Pacific air heading east over Oregon.

First wave of cold air enters the north end of the San Joaquin Valley


UPDATE – It’s in the neighborhood. Still nice and warm outside. But don’t put on those shorts!

Blues skies all day here in Tha 'No, but high clouds are appearing now.

Are you enjoying the warm Early Spring (ES)? Early Spring is a unique Mediterranean-style climate sub-season, where everything in the lowlands is green, the native trees are still dormant, and the weather gets nice. This ES, however, has been a bit too nice!
We have enjoyed a false dry season the last two weeks consisting of a heat wave that put me back in shorts. There were also breezy warmish windy days from a passing storm with snow clouds only over the Sierras. People wondered, “was the rainy season already over? It’s only March!” The traditional Gradual Cutoff Sequence (GCS) hasn’t happened.
Rainy seasons here traditionally die as a series of Pacific storms that come through with rains that are more brief with each one, then fading to blue skies and wind over the Valley floor with storm clouds clinging to the Sierras, then fewer and fewer Sierra clouds, then stopping altogether. The Pacific storm train shifts back up to the Pacific Northwest, stable high pressure comes up from Mexico (the “Mexican High”) and local weather cranks headlong into a series of heat waves all summer long.
What happened to the GCS? Well, looks like it’ll happen after all.
What will likely be the last rainy season Pacific storms are on their way! Then we go into the Warm Spring (WS), where heatwaves easily go into the 100s while Post Seasonal Pacific Fronts (PSPFs) sweep through now and again to cool us off a bit.

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