Incoming! Low pressure moving across southern OR and northern CA will bring precip on Thu and Fri, lingering on Sat. Best totals (1/4"-3/4") will fall along the coast from Cape Mendocino northward, and inland from the southern OR Cascades to Shasta Lake drainage.
#CAwx
#ORwx
#NVw
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NWS Photo: Robert Hyatt
After a record setting 2023 Water Year and a near average 2024 WY, the water supply story at statewide reservoirs is looking good as we head into the drier summer months! The two largest reservoirs, Shasta and Oroville sit at 95% and 99% capacity. Data:
@CA_DWR
#CAwater
#CAwx
After a peak snowpack in the
#Sierra
around Apr 8, that was slightly above normal, the peak snowmelt flow on the Merced R at Pohono Br in
@YosemiteNPS
is forecast to occur tomorrow or Saturday, which is close to when the peak snowmelt flow typically occurs, May 18.
#CAwx
#CAwater
Use extreme caution if headed to area waterways this weekend. Area waterways are running very cold due to snow melt. Even strong swimmers could be in danger. Do NOT enter cold, fast-running water!
#cawx
Warm and dry conditions change to cool and showery for Thursday into the weekend. Showers possible over Nrn & Central CA & NV Thursday and into Srn CA by Friday. Max temperatures cool to 5-20 degrees belw normal Friday with record low max temps possible ovr Srn CA.
#cawx
#nvwx
DWR today conducted the fourth Phillips Station snow survey of the season. The manual survey recorded 64 inches of snow depth and a snow water equivalent of 27.5 inches, which is 113 percent of the 4/1 average to date for this location.
❄️Snowfall Totals Are In! ❄️
Here's a graphic of the 4-day snowfall analysis with the top 4-day totals listed on the left, along with some additional lower elevation locations that measured 2 and 3 day totals.
#CAwx
🌩️There is a 15-30% chance of thunderstorms to develop, mainly this afternoon and evening. Potential threats include small hail, lightning, heavy rain, gusty winds, and possible funnel clouds. Remember, when thunder roars, go indoors!
#CAwx
Low pressure system continues to bring widespread precip to the region into the weekend. Thunderstorms possible, mainly over Nrn and Central CA into Sat. Freezing levels drop to ~2kft for Nrn Sierra & 4kft Srn Sierra Sat morning.
#cawx
#nvwx
On this date last year, the state
#snowpack
was already at 177% of average. Today's results show improvements to the
#snowpack
, but warm storms in Feb. mean numbers are still lower than we’d like. Next month will be critical for
#CA
’s water supplies forecast.
Scattered light precip today, with best totals near the CA/OR border, northeast NV, and the Sierra. A prolonged widespread precip event with lower freezing levels will affect the region for the latter half of this week, heaviest Fri and Sat, especially the Sierra.
#CAwx
#NVwx
Generally dry conditions and rivers receding this weekend into early next week then chance of precip returns to the north mid-week then possibly becoming heavier and more widespread precip and rising rivers late in the week.
#Cawx
#cawater
#nvwx
Snowpack increased this week with an increase of about 2 to 5" of SWE (snow water Equivalent) over the Sierra the past 7 days. A few river forecast points reached flood stage and several monitor stage and all four of the Sacramento weirs had flow this past week.
#cawater
Periods of rain & snow fell ovr region the past week w/ highest amounts of 7-15", locally ~20" ovr transverse mtns. Dntn LA had 8.51" Feb 4-6, ranking 2nd in highest 3 day precip totals & 4.01" in 1 day on Feb 4, ranking 10th in 1 day precip records for LA since 1877.
#cawx