Prepare for a thread on #CAWeather, sharing some info from NWS Hanford.
*cracks knuckles*
NWS Hanford (bot)
Heavy rain below 8,000 feet & melting snow from 2,000 to 5,000 feet will cause water levels to rise on area rivers & streams, resulting in the possibility of flooding in the Sierra Nevada foothills & Sierra Nevada below 5,000 feet Thursday night into Saturday night. #CAwx
#flood #flooding #sierrafoothills #SierraNevada #AtmosphericRiver #ExtremeWeather #climatechange #CentralCalifornia
cont'd
NWS Hanford (bot)
A strong storm system will impact Central California Thursday night through Saturday night, resulting in the possibility of excessive rainfall in the eastern portion of the San Joaquin Valley, the Sierra Nevada foothills, and the Sierra Nevada below the snow line. #CAwx
#flood #flooding #sierrafoothills #SierraNevada #AtmosphericRiver #ExtremeWeather #climatechange #CentralCalifornia #CAWeather #snowmelt
cont'd
NWS Hanford (bot)
A strong storm system will impact Central California Thursday night into Saturday night, resulting in periods of heavy rain in the eastern San Joaquin Valley, the Sierra foothills, & the Sierra Nevada below the snow line. Most precip will fall Thursday night & Friday. #CAwx
#flood #flooding #sierrafoothills #SierraNevada #AtmosphericRiver #ExtremeWeather #climatechange #CentralCalifornia #CAWeather #snowmelt
cont'd
more pics to go with the Excessive Rainfall Risk post above.
#CAwx
#flood #flooding #sierrafoothills #SierraNevada #AtmosphericRiver #ExtremeWeather #climatechange #CentralCalifornia #CAWeather #snowmelt
cont'd
Thanks to the Naut who posted this video earlier (couldn't find it again). So am posting it here with many hashtags.
Atmospheric rivers expected to slam California
https://www.youtube.com/watch?v=dURutyOchVM
Major Flood Event
#CAwx
#flood #flooding #snow #AtmosphericRiver #ExtremeWeather #climatechange #CAWeather #snowmelt #SanDiego #SanBernardino #weather #CentralCalifornia #SoCal
cont'd
context: Warm Rain Storm is NOT GOOD over Snow. It will melt it fast.
VIDEO:
ABC 7 News Bay Area
Atmospheric river set to slam CA Friday, causing flood threats
https://www.youtube.com/watch?v=NAHEhCa4ww0
'Significant Sierra Snowmelt is Very Possible Late This Week'
plus
'Heavy Rain in the Foothills'
=
😳
#CAwx
#flood #flooding #snow #AtmosphericRiver #ExtremeWeather #climatechange #CAWeather #snowmelt #weather #CentralCalifornia #NorCal #Tahoe #sierrafoothills #SierraNevada #snowpak
cont'd
NWS California-Nevada RFC
Periods of precipitation continue through the week especially over Srn OR & Nrn & Central CA & NV. Wetter & warmer system expected for late Thursday into Saturday. Rises are expected on rivers and streams with a few points forecast to reach monitor stage or above Friday #CAwx
Image
1:49 PM · Mar 6, 2023
#flood #snow #AtmosphericRiver #ExtremeWeather #climatechange #CAWeather #sierrafoothills #SierraNevada #snowpack #CentralCalifornia #NorCal
cont'd
(4 of out 5)
CW3E Scripps
Forecast models are now predicting the incoming AR will reach AR4 ranking in the Bay Area. 80% chance of being at least an AR3
11:16 AM · Mar 7, 2023
#AtmosphericRiver #ExtremeWeather #weather #climatechange #CAWeather #BayArea #NorCal
RE: rain-on-snow events later this week (around March 10, 2023):
-The low elevation snow, high soil moisture content, and higher river levels, which we currently have, tick the ingredients boxes for increased potential impacts from a warmer atmospheric river. It’s something to keep an eye on, but the predictions don’t yet show something huge like 1997 — there is something coming but it’s still quite uncertain how it will evolve.-
#AtmosphericRiver #Cawx #SierraNevada
https://www.dri.edu/understanding-rain-on-snow-events-with-anne-heggli/
NWS Weather Prediction Center
@NWSWPC
WPC has initiated Key Messages for a winter storm set to deliver heavy rain & mountain snow to California late week. Expected impacts include (but are not limited to) treacherous travel in higher terrain & flooding from a combination of heavy rain & snowmelt. #CAwx
1:57 PM · Mar 7, 2023
#flood #snow #AtmosphericRiver #ExtremeWeather #climatechange #CAWeather #sierrafoothills #SierraNevada #snowpack #CentralCalifornia #CoastalRanges #weather #California
cont'd
#WinterStorm Watch
NWS Hanford
@NWSHanford
A strong storm system will impact Central California Thursday night through Saturday night, producing heavy snow in the higher elevations of the Sierra Nevada. A Winter Watch is in effect above 7,000 feet from 4 PM PST Thursday through 10 AM PDT Sunday. #CAwx
3:33 PM · Mar 7, 2023
#flood #snow #AtmosphericRiver #ExtremeWeather #climatechange #CAWeather #sierrafoothills #SierraNevada #snowpack #CentralCalifornia
cont'd
NWS Hanford
@NWSHanford
Correction: #CAWx #Merced The Merced River near #Stevinson is forecast to peak at 74 feet Saturday night which is about flood stage. Flood stage for the Merced River at Stevinson is 71 feet which will be exceeded Friday night. #TurnAroundDontDrown.
4:40 PM · Mar 7, 2023
#flood #flooding
#AtmosphericRiver #ExtremeWeather #CAWeather #CentralCalifornia
cont'd
Link to #FRESNO COUNTY map that will show you if you are in an area threatened by #flooding from the Winter Storm:
https://t.co/ZpOiw7tzdH
#CAwx
#CAWeather #AtmosphericRiver
#sierrafoothills #SierraNevada
cont'd
NWS Hanford
@NWSHanford
Heavy rain below 8,000 ft and melting snow from 2,000 ft to 5,000 ft will cause water levels to rise on area rivers & streams, resulting in the possibility of flooding in the Sierra Nevada foothills and Sierra Nevada below 4,000 feet Thursday evening through Sunday morning. #CAwx
3:31 PM · Mar 7, 2023
#flood #flooding
#AtmosphericRiver #ExtremeWeather #CAWeather #CentralCalifornia #weather
cont'd
NWS Hanford
There is a moderate risk of excessive rainfall in the northeastern portion of the San Joaquin Valley, the Sierra Nevada foothills, and the Sierra Nevada below 6,000 feet Thursday evening and overnight, which could result in localized flooding. #CAwx
3:29 PM · Mar 7, 2023
·
#flood #flooding
#AtmosphericRiver #ExtremeWeather #CAWeather #CentralCalifornia
#sierrafoothills #SierraNevada #SJV #CentralValley #BayArea #NorCal
cont'd
NWS Hanford
A strong storm system will impact Central California Thursday night into Sunday morning, resulting in periods of heavy rainfall in the eastern portion of the SJ Valley, the Sierra Nevada foothills, and the Sierra Nevada below the snow line. Localized flooding is possible. #CAwx
3:28 PM · Mar 7, 2023
#flood #flooding
#AtmosphericRiver #ExtremeWeather #CAWeather #CentralCalifornia
#sierrafoothills #SierraNevada #SJV
cont'd
#TULARE COUNTY
(Tulare County) Heavy rain/snow this weekend. Prepare now: stock up on fuel food water medications. Possible flooding/road closures may isolate you for several days. sandbags info. . available at https://tularecounty.ca.gov/emergencies/
#flood #flooding
#AtmosphericRiver #ExtremeWeather #CAWeather #CentralCalifornia #CAwx
#sierrafoothills #SierraNevada
🧵 cont’d
Strong “Pineapple Express” #atmosphericriver to bring heavy rain, snowmelt, and a wide range of impacts to Northern California
Daniel Swain
March 7, 2023
… with a near-record #snowpack in some places (though not others–notably including the northern Sierra) comes the reality that there’s a lot of water stored up in them thar hills….
this very large snowpack will mostly remain intact until later in the spring…
My 🧵 continued.
River #Flood Forecast:
Daniel Swain
@Weather_West
Perspective: here is latest
@NWSCNRFC
river flood forecast for next ~5 days (through Sunday, or ~48 hrs after strong/warm AR on Fri). These forecasts take into account both predicted precip & #snowmelt. A few rivers will likely experience minor to moderate #flooding. #CAwx #CAwater
1:41 PM · Mar 7, 2023
#SierraNevada #CAWeather #NorCal #water #sjv #AtmosphericRiver #snowpack
link to Daniel's thread
https://twitter.com/Weather_West/status/1633221268974731264
cont'd
"Excessive Rainfall Risk"
NWS Hanford
There is a significant risk of excessive rainfall in the Sierra Nevada foothills and the Sierra Nevada below the snow line this afternoon through Friday night. Flooding is possible as water levels rise on area rivers, creeks, and streams. A Flood Watch is in effect. #CAwx
5:34 AM · Mar 9, 2023
#SierraFoothills #SierraNevada #AtmosphericRiver #CAWeather #FloodWatch
@peeppeepcircus hope you are stocked up and secure, dearheart
xx
@peeppeepcircus way north of you, where we be, it has been very very wet too this year, and forecast is for not much break until april.
🫂
@pennyphilosophy
i am stocked up, done what i think i can do. hope nothing big happens, although the already damaged and not fixed yet roads will probably get damaged and flooded again so I will probably get cut off and have to shelter in place for a bit, again. for that I am also somewhat prepared.
what a weird winter for my area. usually in january it's dry enough to go out and gather up some wood. not this year!