National Weather Service Forecast for:
Placerville CA Issued by: National Weather Service Sacramento, CA |
||||||||||||||||||
Updated: 11:41 am PST Jan 26, 2021 | ||||||||||||||||||
Placerville | ||||||||||||||||||
|
High Wind Warning
Winter Storm Warning
This Afternoon |
Rain, possibly mixed with snow showers, mainly after 4pm. High near 42. South wind around 13 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible. |
Tonight |
Rain and snow showers, becoming all snow after 7pm. Low around 34. Windy, with a south southeast wind 22 to 27 mph increasing to 28 to 33 mph after midnight. Winds could gust as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible. |
Wednesday |
Rain and snow showers, becoming all rain after 10am. High near 39. Breezy, with a south southeast wind 21 to 26 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 100%. Little or no snow accumulation expected. |
Wednesday Night |
Showers. The rain could be heavy at times. Low around 39. South southeast wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible. |
Thursday |
Showers. The rain could be heavy at times. High near 45. South southeast wind around 10 mph. Chance of precipitation is 90%. |
Thursday Night |
Showers. Low around 38. Chance of precipitation is 80%. |
Friday |
A 50 percent chance of showers. Partly sunny, with a high near 46. |
Friday Night |
A chance of showers before 4am, then rain likely after 4am. Mostly cloudy, with a low around 37. |
Saturday |
Rain likely, mainly before 10am. Mostly cloudy, with a high near 50. |
Saturday Night |
A slight chance of rain. Mostly cloudy, with a low around 37. |
Sunday |
A chance of rain. Partly sunny, with a high near 54. |
Sunday Night |
A chance of rain. Mostly cloudy, with a low around 40. |
Monday |
Rain likely. Mostly cloudy, with a high near 52. |
Forecast from NOAA-NWS for Placerville CA.
NWS Local Northern CA. Outlook Discussion
000 FXUS66 KSTO 261204 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 404 AM PST Tue Jan 26 2021 .SYNOPSIS... Freezing temperatures are expected across much the area this morning. A long duration, high impact winter storm this evening into Friday bringing periods of gusty winds and moderate to heavy rain and mountain snow. Potential for significant low elevation snow and damaging winds tonight and Wednesday as well as burn scar impacts to the LNU Complex and SCU Complex burn scars. && .DISCUSSION... We are in the calm before the storm early this morning as a short wave ridge builds in. This is bringing clear skies and with a cold air mass in place we are seeing cold temps this morning and the Hard Freeze Warning looks to be on track. Quiet weather is expected for much of the day today with increasing clouds. The forecast will become very active starting in the evening as a trough drops out of the Gulf of Alaska. This will bring a high impact winter storm to NorCal. As the tough drops south we will see warm air advection increase over the region this afternoon into the evening with light precip developing over the Coastal Range after 1 pm. Precip will continue to overspread the area during the late afternoon into the evening. Precip will become heavier during the evening and will be the heaviest overnight as the cold front moves through. A NCFR (narrow cold frontal rainband) is likely to develop along the cold front and this will bring us the most intense rain and snow. This can be expected between 8 pm Tuesday and 8 am Wednesday and we could see rain rates exceed 0.50" per hour and snow rates exceed 2" per hour during this time. The best chances for the rain rain rates greater than 0.50" per hour will be over western Yolo County into Solano County and south into western San Joaquin and Stanislaus County. This does include the LNU and SCU Lightning Complexes and a Flash Flood Watch has been issued for both of those burn scars. The other big concern with this system will be the low snow levels. Snow levels will be 500 to 2000 feet this evening and will fall to the Valley floor over the northern Sacramento Valley overnight tonight into Wednesday morning. This will result in snow in Redding and Red Bluff with several inches expected. Snow levels will rise throughout the day Wednesday and we should see them rise above 3000 feet during the afternoon but they will remain locally down to 2000 feet over Shasta County. Southerly winds increase rapidly overnight tonight as this storm moves in with 925mb NAM winds maxing out around 75 knots. This may translate to winds across the Valley of 35 to 45 mph with gusts of up to 50-65 mph. A High Wind Warning has been issued for these anticipated damaging winds. With widespread rain and heavy snow also anticipated during these overnight hours, expect extremely poor visibilities and hazardous travel conditions. The back side of the trough will continue to dig down the CA Coast and that will help to stall the cold front over the region. This will keep rain and snow in the forecast for Wednesday and Thursday with the heaviest rain and snow expected from I-80 south. Snow levels into Wednesday night will generally be between 3000 and 4000 feet locally lower over Shasta County. Snow levels on Thursday will continue to come up and we should see them rise to around 4000 feet by the afternoon. Light showers will linger into Thursday night especially over the higher elevations. -CJM && .EXTENDED DISCUSSION (Saturday THROUGH Tuesday)... Active storm pattern continues into early next week as an upper trough remains off the coast bringing persistent moist southwest flow into NorCal. Precipitation amounts likely to be significantly less than earlier in the week on Saturday giving a relative break to mountain travelers, but another round of impactful mountain snow looks likely Sunday into Monday. && .AVIATION... VFR conditions predominate thru 00Z Wednesday, except local MVFR visibilities south of KSAC 13Z-17Z. Southerly surface wind gusts 10-20 kts 18Z-00Z Wednesday. Widespread MVFR conditions develop across the Central Valley between 22Z-02Z Wednesday, with IFR/LIFR developing over the mountains, as frontal system moves into NorCal. Low snow levels with accumulating snow likely at KRDD and KRBL beginning this evening. Increasing southerly surface wind gusts 35-50 kts after 03Z Wednesday. && .STO WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning from 4 PM this afternoon to 2 AM PST Friday for Burney Basin / Eastern Shasta County-Central Sacramento Valley-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley- Northern Sacramento Valley-Shasta Lake Area / Northern Shasta County-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park. High Wind Warning from 8 PM this evening to noon PST Wednesday for Carquinez Strait and Delta-Central Sacramento Valley- Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley. Flash Flood Watch from 4 PM PST this afternoon through Thursday afternoon for Northern San Joaquin Valley-Southern Sacramento Valley. && $$
|
Hazardous Weather Outlook
No Hazardous Weather Is Expected At This Time
|