9m · The Storm Prediction Center has issued a general thunderstorm risk for areas in light green on the map below for Friday into Saturday. This does include portions of Curry, Coos, southern Douglas, Josephine, Jackson, Klamath and Siskiyou counties. These thunderstorms will likely be isolated in nature given that instability aloft is just enough to generate a few lightning strikes and rumbles of thunder.
REV issues Flood Warning for Lassen, Nevada, Plumas, Sierra [CA] and Churchill, Pershing, Washoe [NV] till Oct 24, 8:00 PM PDT https://mesonet.agron.iastate.edu/vtec/f/2021-O-NEW-KREV-FA-W-0001_2021-10-24T18:12Z…
⚠️A HIGH Risk of Excessive Rainfall is in effect for portions of Northern California tomorrow. A strong atmospheric river will produce rainfall of 8-10 inches in the region, leading to significant and life-threatening flash floods and mudslides, particularly over burn scar areas. pic.twitter.com/FvACBTpNID— NWS Weather Prediction Center (@NWSWPC) October 23, 2021
South Central Siskiyou County- Including the cities of Dunsmuir, McCloud, and Mount Shasta 446 AM PDT Sat Oct 23 2021 ...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON... The National Weather Service in Medford has issued a * Flood Watch South Central Siskiyou County in northern California. * From late tonight through Sunday afternoon * Periods of moderate to heavy rainfall are expected late tonight into Sunday afternoon resulting in additional rainfall amounts of 2 to 3 inches. This rain, combined with recent heavy rains is expected to bring quick rise on areas streams and creeks. * Small streams and creeks could reach bankfull or even flood during this time period. Areas with poor drainage could see significant ponding of water in low lying areas. No main stem river flooding is expected at this time. Land slides and rock falls will be possible during this time of moderate to heavy rain.
Daniel Swain@Weather_WestSomething to keep an eye on regarding strong Sunday #AtmosphericRiver is that it’ll be (at least initially) a very warm event, w/rain falling to ~10,000ft. This, combined w/potentially intense rain rates, will elevate burn area flash flood/debris flow risk in Sierra.#CAwx#CAfire2:41 PM · Oct 21, 2021·Twitter Web App
The substantial amount of water delivered by these early-season storms will be primarily beneficial (likely ending fire season across NorCal), but high rain rates could also bring some flood/debris flow problems on Sun/Mon, esp. near wildfire burn areas. #CAwx#CAfireQuote Tweet
Daniel Swain@Weather_West · 1h Models now targeting late Sun into Mon period for potentially strong #AtmosphericRiver event in northern and/or central CA. Ensemble mean brings strong AR conditions. Worth noting that control run brings even more intense conditions, but is at upper end of ensemble envelope.#CAwx8:24 AM · Oct 20, 2021·Twitter Web App
While welcome, people near burn areas need to watch for flood/erosion problems. And there is a chance the South Bay area may get hit with an atmospheric river, causing considerable problems.
Fire season ought to be over by November 1st. Couldn’t come soon enough!
Red Flag WarningRed Flag Warning is effective from 10/12/2021, 3:30 AM through 10/12/2021, 7:00 PM
Areas Affected: Central Sacramento Valley including Glenn, Colusa, Yuba, Northern Sutter, Butte County Below 1000 Ft; Eastern Delta; Eastern Mendocino NF; Northern Motherlode From 1000 to 3000 Ft. From Yuba To Amador Counties; Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft; Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft – Excludes the Delta; Northern Sierra Foothills from 1000 to 3000 Ft.
Daniel Swain@Weather_WestThe next week will continue to feature dry conditions, strong & gusty winds at times, and high wildfire risk across most of California. BUT…there are strengthening signs that a more widespread wet pattern may develop around 10 days from now. Stay tuned! #CAwx#CAfire9:17 AM · Oct 12, 2021·Twitter Web App