UC Berkeley Central Sierra Snow Lab
@cssl.bsky.social
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.
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!
#weather #water
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!
#weather #water
February 17, 2026 at 4:58 PM
2/16/26 8:35am Update:
Our storm has begun and we have 9.4" (24 cm) of #snow so far with plenty more on the way!
Moderate snowfall is continuing with snow-to-liquid ratios of ~12:1 - lighter and fluffier snow than we normally get! Wind and snow rates will pick up this afternoon.
#CAwx #CAwater
Our storm has begun and we have 9.4" (24 cm) of #snow so far with plenty more on the way!
Moderate snowfall is continuing with snow-to-liquid ratios of ~12:1 - lighter and fluffier snow than we normally get! Wind and snow rates will pick up this afternoon.
#CAwx #CAwater
February 16, 2026 at 4:39 PM
2/15/26 10:05 am:
The biggest storm of the season will start tonight! Check out the forecast and expected impacts in the most recent edition of our email forecast here 👇
mailchi.mp/83c61eb794cf...
The biggest storm of the season will start tonight! Check out the forecast and expected impacts in the most recent edition of our email forecast here 👇
mailchi.mp/83c61eb794cf...
February 15, 2026 at 6:09 PM
2/15/26 10:05 am:
The biggest storm of the season will start tonight! Check out the forecast and expected impacts in the most recent edition of our email forecast here 👇
mailchi.mp/83c61eb794cf...
The biggest storm of the season will start tonight! Check out the forecast and expected impacts in the most recent edition of our email forecast here 👇
mailchi.mp/83c61eb794cf...
🚨 WEBSITE DOWN 🚨
The company that hosts our data is having a problem with their servers and our website is down as a result. The website will come back up once they're able to resolve the issue.
The company that hosts our data is having a problem with their servers and our website is down as a result. The website will come back up once they're able to resolve the issue.
February 12, 2026 at 11:05 PM
🚨 WEBSITE DOWN 🚨
The company that hosts our data is having a problem with their servers and our website is down as a result. The website will come back up once they're able to resolve the issue.
The company that hosts our data is having a problem with their servers and our website is down as a result. The website will come back up once they're able to resolve the issue.
2/11/26 9:25 am Update:
We had 3.3" (8.5 cm) of #snow at the 8 am measurement. Expectedly, the storm came in warm with rain and then switched to snow last night. We expect another 1-2" today.
A larger storm is poised to come through next week, potentially with feet of snow.
#CAwx #CAwater
We had 3.3" (8.5 cm) of #snow at the 8 am measurement. Expectedly, the storm came in warm with rain and then switched to snow last night. We expect another 1-2" today.
A larger storm is poised to come through next week, potentially with feet of snow.
#CAwx #CAwater
February 11, 2026 at 5:24 PM
Psst... pssst... the forecast is getting better... ❄️❄️❄️
Img: snow accumulation at the nearest model grid point to the Snow Lab
Img: snow accumulation at the nearest model grid point to the Snow Lab
February 8, 2026 at 4:39 PM
Psst... pssst... the forecast is getting better... ❄️❄️❄️
Img: snow accumulation at the nearest model grid point to the Snow Lab
Img: snow accumulation at the nearest model grid point to the Snow Lab
2/4/26 9am Update:
Model ensembles are showing a shift to wet conditions beginning Monday and continuing for most of next week.
We're still too far out to nail down #snow amounts but we will post updates on expected conditions as we draw nearer to the forecast window.
#CAwx #weather
Model ensembles are showing a shift to wet conditions beginning Monday and continuing for most of next week.
We're still too far out to nail down #snow amounts but we will post updates on expected conditions as we draw nearer to the forecast window.
#CAwx #weather
February 4, 2026 at 5:17 PM
1/28/26 10am Update:
We had 2.8" (7 cm) of #snow overnight, which breaks our nearly 3 week dry spell.
Unfortunately, it looks like this is all we'll get for at least the next 7-10 days. Following recent melt, we are now at 54% of median snowpack and 68% of snowfall to-date.
#CAwx #CAwater
We had 2.8" (7 cm) of #snow overnight, which breaks our nearly 3 week dry spell.
Unfortunately, it looks like this is all we'll get for at least the next 7-10 days. Following recent melt, we are now at 54% of median snowpack and 68% of snowfall to-date.
#CAwx #CAwater
January 28, 2026 at 6:01 PM
1/26/26 10:35 am Update:
#snow is in the forecast! It's not a ton, only 2-4" on Tuesday night/early Wednesday but it should be enough to momentarily pause the dry conditions. We haven't had snow since January 8th (18 days) and this is definitely a welcome change!
#CAwx #CAwater
#snow is in the forecast! It's not a ton, only 2-4" on Tuesday night/early Wednesday but it should be enough to momentarily pause the dry conditions. We haven't had snow since January 8th (18 days) and this is definitely a welcome change!
#CAwx #CAwater
January 26, 2026 at 6:37 PM
Only a few more days to support snow science and look awesome while doing it!
Our apparel fundraiser ends Monday 1/26/26 at 8am, so be sure to get yourself an awesome t-shirt, hoodie, or hat before then!
Get it here: tinyurl.com/CSSLapparel
#supportscience #weather #CAwx
Our apparel fundraiser ends Monday 1/26/26 at 8am, so be sure to get yourself an awesome t-shirt, hoodie, or hat before then!
Get it here: tinyurl.com/CSSLapparel
#supportscience #weather #CAwx
January 22, 2026 at 6:16 PM
Only a few more days to support snow science and look awesome while doing it!
Our apparel fundraiser ends Monday 1/26/26 at 8am, so be sure to get yourself an awesome t-shirt, hoodie, or hat before then!
Get it here: tinyurl.com/CSSLapparel
#supportscience #weather #CAwx
Our apparel fundraiser ends Monday 1/26/26 at 8am, so be sure to get yourself an awesome t-shirt, hoodie, or hat before then!
Get it here: tinyurl.com/CSSLapparel
#supportscience #weather #CAwx
❄️ You made it through the workweek, now it’s time to treat yourself ❄️
Grab some new apparel this weekend and show your support for snow science. Look good, feel good, give back!
Proceeds will go to the @ucberkeleyofficial.bsky.social Central Sierra Snow Lab. Get it here: tinyurl.com/CSSLapparel
Grab some new apparel this weekend and show your support for snow science. Look good, feel good, give back!
Proceeds will go to the @ucberkeleyofficial.bsky.social Central Sierra Snow Lab. Get it here: tinyurl.com/CSSLapparel
January 16, 2026 at 5:21 PM
❄️ You made it through the workweek, now it’s time to treat yourself ❄️
Grab some new apparel this weekend and show your support for snow science. Look good, feel good, give back!
Proceeds will go to the @ucberkeleyofficial.bsky.social Central Sierra Snow Lab. Get it here: tinyurl.com/CSSLapparel
Grab some new apparel this weekend and show your support for snow science. Look good, feel good, give back!
Proceeds will go to the @ucberkeleyofficial.bsky.social Central Sierra Snow Lab. Get it here: tinyurl.com/CSSLapparel
❄️ Wear Your Support for Snow Science! ❄️
We’re excited to launch our apparel fundraiser! Every purchase supports research, education, and operations at our historic field station.
Your support makes a real impact. Get it here 👇
stores.inksoft.com/uc_berkeley_...
We’re excited to launch our apparel fundraiser! Every purchase supports research, education, and operations at our historic field station.
Your support makes a real impact. Get it here 👇
stores.inksoft.com/uc_berkeley_...
January 13, 2026 at 5:53 PM
❄️ Wear Your Support for Snow Science! ❄️
We’re excited to launch our apparel fundraiser! Every purchase supports research, education, and operations at our historic field station.
Your support makes a real impact. Get it here 👇
stores.inksoft.com/uc_berkeley_...
We’re excited to launch our apparel fundraiser! Every purchase supports research, education, and operations at our historic field station.
Your support makes a real impact. Get it here 👇
stores.inksoft.com/uc_berkeley_...
Reposted by UC Berkeley Central Sierra Snow Lab
The new version of our website was launched today! Check out cssl.berkeley.edu to see the new site or check out our Youtube video for some details on features.
youtu.be/7UxzcRF2eNU
youtu.be/7UxzcRF2eNU
The Launch of Our New Website
YouTube video by Central Sierra Snow Laboratory
youtu.be
January 5, 2026 at 11:54 PM
The new version of our website was launched today! Check out cssl.berkeley.edu to see the new site or check out our Youtube video for some details on features.
youtu.be/7UxzcRF2eNU
youtu.be/7UxzcRF2eNU
Good morning! Sorry for our website woes, we have a new site that we're excited to launch but have had some issues with Berkeley's IT making the transition. It has been started but no one is in office to finish it, likely until the new year. We'll keep you updated.
December 27, 2025 at 6:24 PM
Good morning! Sorry for our website woes, we have a new site that we're excited to launch but have had some issues with Berkeley's IT making the transition. It has been started but no one is in office to finish it, likely until the new year. We'll keep you updated.
12/27/25 10am Update:
We had 6.3" (16 cm) of #snow in the last day, which brings our storm total (12/23-12/27) to 52.8" (134 cm).
We'll have sunny/clear skies over the next several days but have another chance at some precip (hopefully, snow) around the new year.
#weather #CAwx
We had 6.3" (16 cm) of #snow in the last day, which brings our storm total (12/23-12/27) to 52.8" (134 cm).
We'll have sunny/clear skies over the next several days but have another chance at some precip (hopefully, snow) around the new year.
#weather #CAwx
December 27, 2025 at 6:05 PM
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
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
December 25, 2025 at 5:49 PM
12/24/25 9:30am Update:
We had 1.2" (3 cm) of #snow this morning, which brings our 2-day total to 5.5" (14 cm). We have heavy snowfall rates as can be seen on radar.
Snowfall predictions have come up a bit in the last day and we're now looking at 3-5 feet by late tomorrow night.
We had 1.2" (3 cm) of #snow this morning, which brings our 2-day total to 5.5" (14 cm). We have heavy snowfall rates as can be seen on radar.
Snowfall predictions have come up a bit in the last day and we're now looking at 3-5 feet by late tomorrow night.
December 24, 2025 at 5:48 PM
12/24/25 9:30am Update:
We had 1.2" (3 cm) of #snow this morning, which brings our 2-day total to 5.5" (14 cm). We have heavy snowfall rates as can be seen on radar.
Snowfall predictions have come up a bit in the last day and we're now looking at 3-5 feet by late tomorrow night.
We had 1.2" (3 cm) of #snow this morning, which brings our 2-day total to 5.5" (14 cm). We have heavy snowfall rates as can be seen on radar.
Snowfall predictions have come up a bit in the last day and we're now looking at 3-5 feet by late tomorrow night.
Here's a quick discussion on the forecast for 12/24 to 12/26 and the hazards associated with the big #snow that we're expecting.
www.youtube.com/watch?v=-ZXI...
www.youtube.com/watch?v=-ZXI...
Big Snow in the Forecast 12/24 - 12/26, 2025
YouTube video by Central Sierra Snow Laboratory
www.youtube.com
December 23, 2025 at 8:21 PM
Here's a quick discussion on the forecast for 12/24 to 12/26 and the hazards associated with the big #snow that we're expecting.
www.youtube.com/watch?v=-ZXI...
www.youtube.com/watch?v=-ZXI...
We're working on pushing out a new version of our website today. This means that you may be unable to reach it until the work is done. Apologies for the inconvenience, please bear with us!
December 22, 2025 at 6:42 PM
We're working on pushing out a new version of our website today. This means that you may be unable to reach it until the work is done. Apologies for the inconvenience, please bear with us!
12/19/2025 2:30pm Update:
A bit of snowfall has accumulated over the last couple of hours. The rain/snow line appears to be just below our elevation at 6900 feet, we've been told for certain that it's primarily rain at 6000 feet.
More rain and snow on the way!
#snow #weather
A bit of snowfall has accumulated over the last couple of hours. The rain/snow line appears to be just below our elevation at 6900 feet, we've been told for certain that it's primarily rain at 6000 feet.
More rain and snow on the way!
#snow #weather
December 19, 2025 at 10:29 PM