Rolling Weather Trends         
US  |  CAN
El Dorado Weather Logo
U.S. Color Topo IR Sat North America Color Background Satellite Thumb
Norcal Dual-Pol Radar Live Northern California Doppler Radar Thumbnail Image
W. Coast IR Satellite West Coast Infrared Satellite
Live Lightning Radar Placerville California Lightning Detection Radar Thumbnail Image
Live Streaming Webcam Placerville California Live Streaming WebCam Thumbnail Image
Local Wx Station Data Sacramento, Northern Sierra Nevada & the Motherlode Area Current Weather Conditions
Initial Spread Index (ISI)
Initial Spread Index (ISI)
The ISI combines wind speed and fine fuel moisture to estimate how fast a fire will spread. Higher values indicate faster-spreading fire.
Color Value Category Description
 0 – 5Very LowSlow fire spread. Easy containment.
 6 – 10LowModerate spread. Manageable under most conditions.
 11 – 20ModerateRapid spread. Increased suppression effort needed.
 21 – 30HighVery rapid spread. Aerial support likely needed.
 30+ExtremeExplosive spread. Extreme fire behavior expected.






Contact Us Contact Us Thumbnail | Mobile Mobile Phone Thumbnail
Private Policy | Terms & Conds | Consent Preferences | Cookie Policy
Never base any life decisions on weather information from this site or anywhere over the Internet.
Site is dedicated to our Lord & Savior Jesus Christ | Random Quotes of Jesus

Copyright © 2026 El Dorado Weather, Inc. | Site Designed By:  Webmaster Danny