Other sensors in Berkeley show a range of rain totals since Oct. "It's a fairly rigorous quality control standard," he said. Staff also checks the sensors monthly for the same reason. Jelinski pointed out that the lab's weather tower is audited twice a year to ensure accuracy. John Jelinski, of Berkeley Lab's Environment, Health & Safety Division, said the lab collects weather data as part of its emissions and stormwater monitoring requirements along with other programs. Berkeley Lab weather tower is routinely audited for accuracy The most user-friendly page from the lab about current weather data includes graphics showing temperature, wind direction and humidity as well as precipitation over the last seven days. January is already up to nearly 11 inches of rain, according to the lab sensor, with two more weeks to go. 27 with 2.41 inches.īerkeley got less than 2 inches of rain in November 2022 followed by almost 12 in December. 31 was the rainiest date in Berkeley - with 3.61 inches of rain - followed by Dec. 1, 2022, according to data from MesoWest, Dec. (The other sensors are north of Tunnel Road on Vicente Road and in southwest Berkeley on Valley Street just north of Channing Way.) NWSīerkeley Lab is one of just three Berkeley sensors to push weather data to the University of Utah's MesoWest site, where you can download historic weather data from the lab broken down into 15-minute chunks. The National Weather Service pulls data from several sensors in Berkeley. The most recent of the wettest years on record was in 2016-17 when Berkeley topped out at 46 inches of rain for the year. The next wettest year for Berkeley was 1981-82, when Berkeley precipitation totals reached 50 inches, according to lab data. Last year, for example, Berkeley got about 25 inches of rain through January then mostly plateaued for the rest of the rain year.ĭuring the wettest year on record, 1997-98 according to lab data, Berkeley accumulated about 60 inches of rain. Over the past 30 years, Berkeley has averaged about 29 inches of rain a year, according to lab data, accumulating most of its precipitation from October through April.Īs of early last week, Berkeley was already at 170% of its normal precipitation for this time of year.Īccording to the lab's seasonal rainfall data, Berkeley is pretty much keeping pace with its wettest years on record since at least the 1980s - although lab experts cautioned that a plateau could come at any time. Since then, tower data shows 24.5 inches of rain in Berkeley.īerkeley doesn't usually get to 24.5 inches of rain until mid-March, according to historic lab data. Unlike the calendar year, the rain year in California begins Oct. Cumulative rainfall in Berkeley dating back to the 1970s. It should not be generalized to the rest of the city. Last week, as storms raged in Berkeley and around the state, lab staff took a look at historical data from the weather tower to see how the 2022-23 "rain year" was shaping up.Īs background, lab experts cautioned that tower data reflects only what happens at its specific location on Cyclotron Road. That includes everything from rainfall charts and 15-minute precipitation totals to storm preparation tips and other local weather resources.īerkeley Lab's weather station gets its data from an 85-foot tower near the Advanced Light Source at 1 Cyclotron Road in the Berkeley Hills. The Lawrence Berkeley National Laboratory makes a wealth of weather data available to the public on its weather data website. The Regents of the University of California, Lawrence Berkeley National Laboratoryīerkeley has accumulated 24.5 inches of rain this season and is so far keeping pace with its wettest years in recent decades, according to Berkeley Lab weather data from its tower on Cyclotron Road. Lawrence Berkeley National Laboratory in the Berkeley Hills. Berkeley Lab weather data includes everything from rainfall charts and 15-minute precipitation totals to storm preparation tips and more.
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