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Brief thread about...snow. As of this weekend, the Southern Sierra now appears to have largest snowpack in recorded history (as measured by snow water equivalent, or SWE). Not just for the calendar date, but for *any* date! #CAwx #CAwater [1/n] 
🧵 As much as I've talked about our impressive snowpack in Utah (and it is VERY impressive), the numbers in the Southern Sierra are truly mind-boggling! #cawx #nvwx #cawater
Just look at these basins via NRCS! The southeast Sierra Nevada, flowing into Mono Lake and Owens Valley is at an 8-station average of 452% of median! For this deep into the season, that's crazy!
One site, Big Pine Creek, is at 738% of median and already well over double the median peak that typically occurs in late March.
Thick smoke from intense active #wildfires in California, Nevada & Colorado in latest @CopernicusECMWF Atmosphere Monitoring Service @ECMWF aerosol optical depth forecast visualized by @windyforecast windy.com/-Aerosol-aod55… #LoyaltonFire #CameronPeakFire #CaliforniaFires #COFire
@CopernicusEU @CopernicusEMS @defis_eu @ESA_EO @eumetsat @Atmospheric_SAF @NASAEarth @NOAASatellites @AerosolWatch @wildfiretoday @IAWF @CalFireNews @NevadaFireInfo @RMACCinfo @NWSBoulder @NWSReno @mikeflannigan @weatherdak @Weather_West @DanLindsey77 @RSFireNerd @jmccarty_geo
#ECMWF extreme forecast index for temperature visualized by @windyforecast windy.com/-Extreme-forec… shows high temperatures continuing over SW USA for the next week #cawx #nvwx #cowx @FPappenberger
Absolutely incredible footage of #LoyaltonFire #pyrovortex ("Fire Tornado") earlier today. Pretty sure this validates @NWSReno's Tornado Warning--which is, I believe, the first ever issued by @NWS specifically for a wildfire-generated pyroconvective event. #CAwx #CAfire #NVwx
To be clear: this is *not* first documented instance of a large-scale fire vortex. Devastating #CarrFire in 2018 near Redding, CA produced one of the strongest such events in recent memory, outside of a couple of previous events during Australian firestorms. (1/3) #CAwx #CAfire
Such events are not a new phenomenon--they have probably occurred during particularly intense wildfires under the right atmospheric conditions since...well, time immemorial. But I suspect these recent events have been more noticeable for two key reasons: (2/3) #CAfire
