10/31/2023 0 Comments Sacramento rainfall totals 2021![]() ![]() So, at least for now, the seasonal totals at San Diego, Riverside and Santa Ana are close to where they normally should be through December 16th. The Tuesday storm that brought 1 to 2 inches of rain to the coastal and valley areas put a dent in our rainfall deficit. The area was so far behind prior to last week’s storm, the recent rainfall only brought the region back to where it normally should be at this time of year, rather than ahead. ![]() “The Tuesday storm that brought 1 to 2 inches of rain to the coastal and valley areas put a dent in our rainfall deficit,” the NWS office in San Diego said last week. However, Southern California was only able to take advantage of one of the larger atmospheric river systems recently. While not at record levels, the National Weather Service (NWS) office in Sacramento tweeted the Northern Sierra precipitation is above average for this time of year, and exceptionally better than the same time last year. Northern California is doing a little better in terms of its water year, compared to where it was last year. More storms are forecast next week too! Data from #CAwx #CAsnow #CAwater /jRvQ7OUv1g- NWS California-Nevada RFC December 17, 2021 CA Statewide % of Average has jumped from 19% on Dec 10 to 98% today. Snowpack over the Sierra has increased dramatically in just 7 days after a series of storms affected the region this week. Parts of California are known for whiplash weather, but the rapid changes are quite remarkable given the snowpack was off to such a rough start, after a very warm and dry November for much of the state. The Water Year runs from October 1 through September 30 of the following year. The sudden change gives California its wettest start to the Water Year in more than 40 years, thanks to several drought-denting rain and snow systems pushing through the area in recent weeks. ![]() While they don’t have the exact rankings for each month of the year, “most of the storm events in the study we referenced for the above calculation were in the second half of December and later into the season,” Kalansky added. Kalansky pointed out previous studies have shown a jump on this scale can happen about twice every three years, but usually over the course of an entire winter, not just the month of December. “Increases in snowpack of this size are not common, but also not unprecedented,” Julie Kalansky, deputy director of operations for the Center for Western Weather and Water Extremes ( CW3E), explained. Please review our full terms contained on our Terms of Service page.Thanks to multiple atmospheric river events, average snowpack in California has gone from 18% to 98% in just two weeks. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. We assume no responsibility for any decisions made on the basis of the content presented on this site. Weather data is prone to errors, outages, and other defects. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. See all nearby weather stations Disclaimer The details of the data sources used for this report can be found on the Sacramento International Airport page.
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