UC Berkeley Central Sierra Snow Lab
@UCB_CSSL • 23,587 subscribers
The CSSL is a research station of UC Berkeley specializing in snow physics, snow hydrology, meteorology, and climatology. The lab is at an elevation of 6894 ft.
Shorts
4/12/26 9:35am Update: Heavy #snow started yesterday evening and continued into the night, bringing 13.6" (34.5 cm). That brings our 2-day snow total to 21.5" (54.5 cm). Snowfall and low visibility are still present and we're expecting another 5-10" by tomorrow. #weather #CAwx
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2/17/26 8:55am Update: It. Is. Dumping. We had 28.1" (71.5 cm) of #snow in the last day and we're expecting another 2-3 feet by tomorrow night. Anecdotally, the combination of low visibility, intense snowfall, and high winds have created the worst conditions since Feb 2023!
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MASSIVE STATISTIC: Official #snowfall rates of 7.5" per hour at the lab between 4-5pm today. Snow is light and fluffy. Onsite researcher recorded the daily 4pm measurement and went back to check accumulation an hour later. #CAwx #CAwater #CAsnow #Snow #Weather #AtmosphericRiver
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We have a deep 30.5" (77.5 cm) of new #snow that has fallen over the last 24 hours. Our season total is now 562" (14.29 m) and we're now within one foot of the 2016/2017 winter snowfall total. We're expecting another 2-4 feet through tomorrow and more this week! #CAwx #CAwater
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12/25/25 9:35am Update: Good morning and Merry Christmas! It's a snowy one for us. We received 23.6" (60 cm) of #snow in the last day, which brings our 2-day total to 24.8" (63 cm). We're expecting another 2-3 feet, mostly today but a little tomorrow as well. #CAwx #weather
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Happy first day of meteorological spring! We've had 35" of new #snow over the last day. That brings our 3-day total to 87.2" (221.5 cm) and our 7-day total to 141.9" (360.5 cm)! Our season total is now 531" and we're ~42" from the '16/'17 winter record. 1/2 #CAwx #CAwater
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4/21/26 9:30am Update: #Snow began early this morning and we've accumulated 3.5" (9 cm). We are expecting 1-2 feet total from this storm. Right now we have moderate to heavy snowfall rates with low winds but speeds are expected to increase this afternoon. #weather #CAwater
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3/2/24 8:45am Update: We received 20.7" (52.5 cm) of #snow in the last day, which brings our storm total to 39.8" (101 cm) so far. Several more feet are expected by Monday morning. We lost power overnight but were able to keep all systems online. It's back on for now.
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We have received 19.1" (48.5 cm) of #snow in the last day. Snowpack at the lab is now 102% of median to date. Conditions have already deteriorated this morning with gusty winds and significantly reduced visibility. The next 24 hours will be the heaviest portion of the storm.
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1/4/26 9:20am Update: 1-day ❄️: 14.4" (36.5 cm) 2-day ❄️: 19.7" (50 cm) Plenty more #snow is expected today and into tomorrow with potential for another 8-16". #CAwx #CAwater #weather
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We had 19.3" (49 cm) of #snow in the last 24 hours and have seen some brief rain this morning as well, snow is now falling. We are expecting a switch to rain later this morning. Power went out briefly overnight, shutting down our livestream but it's back up. #CAwx #CAwater
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10/13/25 9:30am Update: Not enough #snow for a measurement this morning because we only measure accumulation greater than 0.5 cm (0.2"). Something tells us we'll have enough within the next 24 hours though... #CAwx #CAwater
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Ah yes, summertime. Long hours of sunlight, days at the lake, and... SNOW?! Yes, snow. Currently at the lab we have a mix of #snow and #graupel coming down. Nothing says summer serenity like a blanket of white! #CAwx #Weather
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We had 1" (2.5 cm) of #snow in the last 24 hours and we're expecting a bigger storm later this week. We captured this vid yesterday when rates were peaking. Power is out this morning, so our website is behind on its live data. It'll update once it's restored. #CAwx #CAwater
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It is DUMPING out here! Who ordered the #snow? #CAwx #CAwater
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11/5/2025 9:35am Update: The storm has arrived and is bringing us #snow. In fact, between the snow and windy conditions, it's absolutely dumping out there! Most of the precipitation is expected to be rain, so we probably won't see too much accumulation, if any. #CAwx #CAwater
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10/15/25 9:20am Update: It's official! Our first measurable snowfall happened. We had 7.3" (18.5 cm) of #snow accumulation at our measurement this morning. It looks like we're done with snow for the next 10 days but we'll be watching the forecast excitedly. #CAwx #CAwater
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We barely got to the threshold but yesterday was the first official snowfall of the 2025 water year (2024/2025 winter season) at the lab with 0.2" (0.5 cm)! Here's a relaxing video of the snow falling to start off your Friday! #snow #CAwx #CAwater
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10/2/25 10:25am No snow yet but plenty of rain over the last 24 hours, which is a great start to the 2026 water year that began yesterday. These early rain storms help prime our soil and keep it moist meaning less water from our snow has to do that job later. #CAwx #CAwater
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2/13/25 8:45am Update: We have 11.8" (30 cm) of new #snow this morning with moderate to high snowfall rates currently. We expect a lull in rates over the next couple of hours but it should pick up again around noon. Another 2-3 feet of snow is expected by tomorrow at the lab.
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Videos
FIRST #SNOW OF THE SEASON ❄️🌨️❄️ #CAwx #CAwater
UC Berkeley Central Sierra Snow Lab59,892 views • 1 year ago
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