Weather Forecast Accuracy Has Deteriorated As a Result of Fewer Flights
We receive wind, temperature and humidity data from aircraft in flight. Fewer flights = less data. The details are here.
Hilary's Forecast Path Shifts West; Updated 9:20am PDT
The forecast path of the center of Hilary has shifted a bit to the west. This increases the threat to the Southland, especially in terms of flooding. Rainfall Note the heavy rains are forecast for Los Angeles County. Serious flash flooding may result. Because the forecast path has shifted to the west, that increases the threat of serious flooding in Los Angeles County north into Yosemite and the southern Sierra. It lessens the threat in Utah and western Arizona. While the threat of widespread flooding in Utah and Arizona lessens, note that some thunderstorms with localized heavy rain show up on the map. In Nevada, the more western path increases the risk of serious flooding around Mt Charleston and into the central part of the state. Here is the updated (9am PDT) flash flood risk map. Wind There are already about 40,000 people without power in California, mostly in the center of the state. The maps above are the peak gusts forecasted with the storm. The highest winds, in general,
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