So, Patzert explains, a drought doesn’t necessarily mean that your rainfall is suddenly cut back by 50% in one year rather, it’s an average of about 15% or 16% less each year over a long period of time.
LAS ANGELES PRECIPITATION TOTALS 2019 PLUS
Overall, the difference between a wet or dry period is plus or minus about 15% of precipitation, on average. There are intermittent dry and wet years during these longer periods, adding to the roller coaster effect. endured a prolonged dry spell., during which the annual rainfall averaged about 12.9 inches. For Downtown Los Angeles, it was the 4th driest January/February combinations since the records began. Compare that to the average amount of 6.92 inches that we usually see combined from those two months. But that wet period was preceded by a stretch of years - from about 1945 to 1977 - when L.A. In Downtown Los Angeles for example, 0.36 inches of rain fell during those first two months of the year. was in a wet cycle, when downtown averaged about 17 inches annually - above average. Before that, `from about 1978 to 1998, L.A. has averaged about 12.6 inches of rain a year, which is below average. Stepping back even further, the last 22 dry years in downtown Los Angeles are part of a bigger, decades-long undulating roller coaster. You think you’re out, and you’re back in again.” Citing the long-term nature of drought, he says, “There’s no quick fix - one wet year doesn’t get you out.” This illustrates Patzert’s point that droughts tend to be “ long, large and intermittent. That stretch of years includes one of the wettest years and five of the driest years on record. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more. That means nearly 70% of years were below average for rainfall during the period. This table gives the total precipitation that fell on Los Angeles during each year from 2010. Looking at downtown Los Angeles over the last 22 rainfall seasons, seven seasons have been above average and 15 have been below. That roller coaster is reflected in longer-term rainfall patterns as well. “Definitely a roller coaster rainfall ride,” said Patzert.
LAS ANGELES PRECIPITATION TOTALS 2019 FULL
While Los Angeles sees about 355.6 mm (14 inches) of rain in a full year, this year's 250 mm probably says more about how bad 2018 was, meteorologist Chris Bianchi wrote for WeatherNation. NOTE: Rainfall normals were updated on May 4, 2021.
Downtown Los Angeles rainfall for previous 2021-2022 season. Monthly rainfall totals for previous seasons are found at Monthly Rainfall for Downtown Los Angeles. Los Angeles, California received 250.19 mm (9.85 inches) of rain so far this year, more than it received during the entire 2018 198.12 mm (7.80 inches). Downtown Los Angeles (USC Campus) 2022-2023 Rainfall Season-to-Date. After that, about twice the normal rainfall fell again in both March and April. Los Angeles received more rain in first 45 days of 2019 than in entire 2018, California.
“Then it got double-bageled in January and February, usually the two wettest months,” he said. The current 'normal' or average seasonal precipitation for this station, updated on May 4, 2021, is 14.25 inches, based upon the 30-year average for 1991 through 2020. Downtown Los Angeles got about double its normal rainfall in November and December, climatologist Bill Patzert points out.
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