Joseph Elfelt2d ago

@ai6yr Scientific article.
Explainer for rapid growth of 2018 Camp Fire in northern California. No paywall.

10km =~ 6.2 miles!!!!

"Abstract Extreme fire spread during the 2018 Camp Fire in northern California was driven by organized long‐range spotting tightly coupled to plume dynamics. Doppler radar and satellite observations reveal distinct regions of ember lofting and downwind fallout within the convective column, forming direct pathways for firebrand transport several (up to 10) kilometers ahead of the main fire front. These firebrands ignited dense clusters of new fires that merged into rapidly advancing lobes, producing abrupt surges in fire growth that exceeded expectations based on surface wind and fuel conditions alone."
https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025JD045798

#Wildfire #CAfire #WildlandUrbanInterface #WUI

Show threadJDSDec 16
Growing, still not on @watchduty_bot and no heli activity #Fire #WildFire #CAfire
Joseph ElfeltNov 13

#PackFire in Mono County California.

Dark symbols are satellite heat detections within prior 6 hours. This data is not real time and sometimes false positive. There is a *lot* more info in the two links in upper left corner of the map.

If you are ordered to evacuate please do so. The fire officials have information that you do not.
#CAfire #CAwx #Wildfire

Open GISsurfer map:
https://mappingsupport.com/p2/gissurfer.php?center=37.582270,-118.794823&zoom=12&basemap=USA_basemap&overlay=VIIRS_7_day,MODIS_7_day,State_boundary&data=https://mappingsupport.com/p2/special_maps/disaster/USA_wildland_fire.txt

Show threadDaniel SwainNov 13
#PackFire is now 1000+ acres and wind driven. Although it may seem counterintuitive, fast wind-driven fires do occur on Sierra lee side prior to cold frontal passages in fall/winter as strong & dry downslope winds (induced by mountain rain shadow) precede precip. #CAwx #CAfire
Daniel SwainNov 13
Despite heavy precip across much of California today (including on the Sierra West slope/crest), the dry downslope wind-driven #PackFIie has broken out on Sierra east (lee) side & is actively burning along Hwy 395 corridor, threatening some structures near Lake Crowley. #CAfire
Show threadDaniel SwainNov 13
#PackFire is now 1000+ acres and wind driven. Although it may seem counterintuitive, fast wind-driven fires do occur on Sierra lee side prior to cold frontal passages in fall/winter as strong & dry downslope winds (induced by mountain rain shadow) precede precip. #CAwx #CAfire
Daniel SwainNov 13
Despite heavy precip across much of California today (including on the Sierra West slope/crest), the dry downslope wind-driven #PackFIie has broken out on Sierra east (lee) side & is actively burning along Hwy 395 corridor, threatening some structures near Lake Crowley. #CAfire
Daniel SwainOct 26
New Weather West post out this evening: "Following a cool and wet October, a much warmer and drier November to come across California." I'll talk more about this in Monday's YT livestream, in addition to Hurricane #Melissa. #CAwx #CAfire

Following a cool and wet Octob...
Following a cool and wet October, a much warmer and drier November to come across California - Weather West

A notably wet (and also cool) October across nearly all of California and much of the Southwest 2025 has been a decidedly strange weather year in California--starting with January's devastating Los Angeles-region firestorms amid a record-dry 6-9 period (and following near-record wet conditions over the 1-2 years prior). The spring and early summer were notably

Weather West - California weather and climate perspectives
Daniel SwainOct 26
New Weather West post out this evening: "Following a cool and wet October, a much warmer and drier November to come across California." I'll talk more about this in Monday's YT livestream, in addition to Hurricane #Melissa. #CAwx #CAfire https://weatherwest.com/archives/43555
Following a cool and wet October, a much warmer and drier November to come across California - Weather West

A notably wet (and also cool) October across nearly all of California and much of the Southwest 2025 has been a decidedly strange weather year in California--starting with January's devastating Los Angeles-region firestorms amid a record-dry 6-9 period (and following near-record wet conditions over the 1-2 years prior). The spring and early summer were notably

Weather West - California weather and climate perspectives
Daniel SwainOct 25
Following today's light (to locally moderate) rainfall in northern California, a strong and persistent ridge appears likely to build across the American West and to linger for some time to come--bringing dry and much warmer than average conditions well into November. #CAwx #CAfire