6/21/25 1:45pm Update:
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
21.06.2025 20:47 — 👍 22 🔁 6 💬 3 📌 3
Looking for something to do on your Saturday? Come visit us at Legacy Day at Donner Memorial State Park! We'd love to chat with you and load you up with stickers!
21.06.2025 19:19 — 👍 2 🔁 0 💬 0 📌 0
The project, called the California Cold Content Initiative (3CI), aims to increase water forecast capabilities.
15.05.2025 16:35 — 👍 3 🔁 1 💬 0 📌 0
5/13/25 9:45am Update:
A fresh blanket of white covers the lab study site after we received 5.9" (15 cm) of late spring #snow in the last day.
Other than some flurries today, there's no snow in the forecast, so this could be our last snowfall of the season.
#CAwx #CAwater
13.05.2025 16:43 — 👍 34 🔁 8 💬 1 📌 2
5/12/25 3:30pm Update:
It's not over yet! We've been getting snow all day and it has led to some wonderful spring conditions ❄️❄️❄️
12.05.2025 22:35 — 👍 17 🔁 2 💬 0 📌 2
YouTube video by Central Sierra Snow Laboratory
CSSL and CW3E Staff Break Down The 2025 Winter Season - May 1, 2025 Snow Season Briefing and Q&A
Yesterday we held our final winter and snowpack briefing of the season that corresponded to the final snow survey in #California.
Overall, another great season with statewide snowpack reaching average, which makes three years in a row. Check it out here:
youtu.be/D6DYrCA7X2Q?...
02.05.2025 15:37 — 👍 11 🔁 1 💬 0 📌 0
2/2 Snow water equivalent (SWE) is the amount of water that can be obtained by melting snow while accumulation is the depth of newly fallen snow over a season that can differ in density and, therefore, doesn't always have the same water content.
27.04.2025 16:39 — 👍 6 🔁 1 💬 0 📌 0
4/27/25 9:40am Update:
Another 4.3" (11 cm) of #snow over the last day brings our season total to 362.99" (922 cm), ~3" (7 cm) over our median annual snowfall of 360" (915 cm).
We had 100% of April 1 median for SWE and are now above average for accumulation too! 1/2
#CAwx #CAwater
27.04.2025 16:39 — 👍 16 🔁 4 💬 1 📌 0
#Snow started shortly after midnight and we have accumulated 4.5" (11.5 cm) so far with light to moderate rates.
We expect more snow through tomorrow with the heaviest rates being overnight tonight and another 5-10" at the lab.
#CAwx #CAwater
26.04.2025 16:08 — 👍 43 🔁 6 💬 1 📌 0
Mwah hahahaha! You thought it was spring but the weather has other plans! ❄️❄️❄️
We are expecting some late-season snow this weekend (April 26 & 27, 2025) above 6000 feet, most of which will fall Saturday night into Sunday morning. We're currently expecting 6-12" at the lab.
#CAwx #CAwater
25.04.2025 18:45 — 👍 17 🔁 2 💬 0 📌 0
We're exciting to be participating in the Tahoe Truckee Earth Day Festival this Saturday April 26, 2025 at the Palisade's Tahoe Village!
Come out to chat with us about all things snow, our research, and educational programs. Or, just stop by to grab yourself a CSSL sticker!
23.04.2025 20:06 — 👍 5 🔁 1 💬 0 📌 0
*late March
08.04.2025 21:00 — 👍 4 🔁 0 💬 1 📌 0
The days can be long but the scenery can't be beat!
Federal Samplers consist of hollow aluminum tubes and spring scales. The tubes collect cores of snow, which we then measure to get its water content.
08.04.2025 18:50 — 👍 4 🔁 0 💬 0 📌 0
There are over 250 snow survey sites in California where crews take manual measurements with hollow tubes, known as Federal Samplers, once a month from Feb to May!
This video is from late May when we did the Onion Creek in the American River Basin April 1 measurement.
08.04.2025 18:50 — 👍 23 🔁 1 💬 3 📌 0
Ablation: combined processes which remove snow or ice from the surface of a glacier or from a snow-field; also used to express the quantity lost by these processes OR reduction of the water equivalent of a snow cover by melting, evaporation, wind and avalanches.
08.04.2025 14:59 — 👍 3 🔁 0 💬 0 📌 0
4/8/25 8am Update:
Today we're at 115% of median snow water equivalent to-date, largely due to last week's storms.
Higher than average temperatures take over today and will continue through Friday, which should substantially increase melt. Ablation season is here!
#CAwx #CAwater
08.04.2025 14:59 — 👍 9 🔁 1 💬 1 📌 0
Researcher taking notes as other researchers are taking measurements in a snow pit.
Researcher in snow pit holding a shovel to the top of the snow pit.
Researchers smiling and posing around a snow pit.
DRI’s Anne Heggli working with the @cssl.bsky.social, testing a new method for measuring #snowpack temperature. Thank you, Anne, for sharing pictures of your #fieldwork. Learn more about Anne's work: bit.ly/hegglirainonsnow #ScienceThatMattersNow
25.03.2025 22:22 — 👍 15 🔁 1 💬 0 📌 0
Today we've hit 99% of our April 1 average snowpack statewide and 100% of average for this date. That last storm really helped out!
Three years at or above average is exceedingly rare in California with the last occurrence being in the late 1990s. Time to celebrate!
#CAwater #snow
02.04.2025 17:21 — 👍 43 🔁 9 💬 1 📌 1
4/2/25 9:30am Storm Update:
24 hour ❄️: 13.2" (33.5 cm)
2-day snow ❄️: 31.1" (79 cm)
Storm total (6-day) ❄️: 43.9" (111.5 cm)
Some light #snow showers are possible today and tomorrow but accumulations are only expected to be 0-2" (0-5 cm).
#CAwx #CAwater
02.04.2025 16:31 — 👍 19 🔁 2 💬 0 📌 0
4/1/25 10:15am Update:
This morning in Barbie Land we had 17.9" (45.5 cm) of #snow from the last day, which brings our storm total to 25.4" (64.5 cm) so far.
We have now had 341" (866 cm) since the start of the water year on October 1st. More on the way today!
#CAwx #CAwater
01.04.2025 17:15 — 👍 16 🔁 1 💬 0 📌 1
After a lot of consideration and debate, we have chosen to rebrand due to the high amount of rain that we've received.
We will no longer be the Central Sierra Snow Lab but, instead, will be the Basic Atmospheric Research on Basin Inflow Efficiencies (BARBIE) project.
01.04.2025 17:06 — 👍 33 🔁 1 💬 1 📌 1
Earlier than expected too - props to the IT team for getting things done quickly!
31.03.2025 16:56 — 👍 1 🔁 0 💬 0 📌 0
3/31/2025 10am Update:
Cold and windy conditions this morning with 7.5" (19 cm) of #snow in the last day and 9.6" (24.5 cm) in the last 2 days.
We're expecting 2-4 feet of snow through tomorrow night, which should bring us close to hitting average on April 1!
#CAwx #CAwater
31.03.2025 16:55 — 👍 26 🔁 1 💬 1 📌 1
*3/30/25
30.03.2025 19:08 — 👍 3 🔁 0 💬 0 📌 0
5/30/25 09:20am Update:
We had 2.2" (5.5cm) of #snow in the last day and moderate to heavy bands of snow are now moving through.
Our interval board, used to measure snowfall over a set period of time, is ready to catch plenty of new snow over the next few days.
#CAwx #CAwater
30.03.2025 16:25 — 👍 23 🔁 2 💬 1 📌 0
🚨 3/30/25 8:55am 🚨
CSSL Web Server Update: Our website is down as UC Berkeley campus IT does critical mechanical and electrical system upgrades. Services will be restored at 10:30pm today.
30.03.2025 15:53 — 👍 5 🔁 0 💬 1 📌 0
🚨 3/30/25 8:30am 🚨
We are aware of an issue with our web server and have been investigating. It looks like this may be a larger problem than just our machine and will likely take some time to solve. We'll keep you updated as things progress.
30.03.2025 15:30 — 👍 10 🔁 0 💬 0 📌 0
3/29/25 9:45am Update
We've had 3.1" (8 cm) of #snow in the last 2 days with 1" (2.5 cm) over the last 24 hours.
Tomorrow morning starts a stormy period that should last 4-5 days and is currently expected to bring us 3-4 feet of snow. The season isn't over yet!
#CAwx #CAwater
29.03.2025 16:44 — 👍 19 🔁 4 💬 1 📌 0
