Much of early October saw the Weatherflow iwindsurf.com/ikitesurf.com forecasts barely changing from day to day for Southern California and the San Francisco Bay Area. During that time marine layer clouds clogged the Bay Area and the Southern California bight much like June Gloom. The cause of this stagnant weather pattern was the Rex Block discussed…
A prolonged period of mild southerly winds due to lingering eddies and the Central Valley thermal low expanding over the Northern California has keep the marine layer very deep recently. This first half of October has been more like a classic “June Gloom” than the antiquated phrase “Indian summer” for October weather. Today is exceptional…
Have you noticed that our San Francisco Bay Area forecast text has barely changed recently? Almost every day there is mention of the Central Valley thermal low over the coast and a chance of an eddy and largely absent NW ocean winds. Before you attribute the repeated forecast text to forecaster laziness consider the Rex…
Yesterday saw a sudden appearance of an eddy around 8 AM west of Bodega. You can see that happening in yesterday’s blog. Todays blog’s first image shows the eddy from its near dawn birth to its death near nightfall. This blog concentrates on how that eddy jacked up the winds at Treasure Island and Berkeley…
Now at 9:23 AM an un-modeled counter-clockwise spinning eddy has suddenly developed WSW of Bodega. This eddy is creating southerly wind on the coast from Half Moon Bay northward. At this time it is also directing a broad streamer of fog from the Golden Gate towards Pt. Isabel. You can see all this in this…
A teleconnection is jargon for a series of events that link a weather event in one part of the world to another weather event in a distant part of the world. Sometimes teleconnections last months or even years but this rain-delivering teleconnection is a brief event. In this case, Typhoon Merbok, east of Japan, indirectly…
As you have probably noticed we have had some weird wind/weather patterns in recent years. But this week has been exceptional for weirdness. This graphic shows how anomalous a weather pattern is compared to historical norms. Lots of weirdness today. For you math wizards that means the major wind makers, Hurricane Kay and the North Pacific…
It was HOT this Labor Day. The media is talking non-stop about the enduring heat wave and how is is caused by a “Heat Dome. The first two images show you: What causes the heat dome. What the heat dome looks like from a 3D perspective. And the basic mechanisms that create all the heating….
La Niña always makes for very fast-changing wind patterns. For most of the year it has kept the North Pacific High unusually (as in 2 standard deviations from the mean) far south. That is why we have had so much NW wind on the coast this season. But La Niña also makes the storm track…