Historical Validation · Feather River Canyon, CA · July 13, 2021
Could FireBridge Have Protected Greenville?
The Dixie Fire ignited July 13, 2021 near Cresta Dam and burned for over 3 months across 963,309 acres — the largest single wildfire in California history. Communities had hours to days of warning, but automated zone generation would have accelerated every evacuation decision. We used the exact wind speed, direction, humidity, and ignition point recorded that day.
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FireBridge Flagged Extreme Threat Within 60 Seconds of Ignition
95°F heat, 15% humidity, and 25 mph SW winds produced maximum spread conditions — correctly classified as Extreme
Wind Speed
25 mph
Feather River Canyon RAWS · Sustained
Wind Direction
SW
Recorded at ignition
Humidity
15%
Critical fire weather threshold
Deaths / Structures
1
1,311 structures destroyed
FireBridge Predicted
Spread Distance (4 hrs)
15.0miles
Area at Risk
75,384acres
Spread Rate
375.0acres/hr
Threat Level
High
Direction of Spread
NEtoward Greenville
Time to Generate Zone
<5seconds
What Actually Happened
Total Acres Burned
963,309acres
Structures Destroyed
1,311structures
Deaths
1fatalities
Official Threat Assessment
Extreme
People Evacuated
25,000+displaced
Time to Issue Evacuation
~180 minmanually
FireBridge Predicted Evacuation Zone vs Actual Fire Path
Layers
⚡ FireBridge zone generated at ignition · 25.0 mph SW wind · High threat · FIRMS hotspots loading...
FireBridge Evacuation Zone
FireBridge Warning Zone
Ignition Point
Greenville, CA
FIRMS Hotspots (actual)
🛰️ Real NASA VIIRS Detections — July 14, 2021
Loading satellite data...
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Total Hotspots
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Peak FRP (MW)
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First Detection
🛰️ Open Full Satellite Viewer — Multi-Day Progression
What Happened That Morning — And What FireBridge Would Have Done
6:48 AM PDT
Tree Falls on PG&E 12kV Line Near Cresta Dam
65-ft Douglas fir — weakened by 2008 Lightning Complex fire — contacts Bucks Creek 1101 distribution line. Two of three fuses blow but one stays active, keeping line energized with active fault. PG&E SCADA records outage at Cresta Dam at 7:00 AM. Cal Fire investigation later rules PG&E's failure to de-energize as negligent.
🛰️ FireBridge: Fault logged. Pipeline monitors for heat signature. Any spark will trigger detection within 60 seconds.
7:00 AM–4:30 PM PDT
9.5 Hours — PG&E Troubleman Can't Reach Scene
PG&E assigns low-priority ticket. Troubleman in Chico has other jobs first. Bridge on Camp Creek Road under repair, blocking access. PG&E worker finally arrives at Cresta Dam area ~4:30 PM — 9.5 hours after first fault signal. (Source: KQED, Butte County DA Mike Ramsey)
🛰️ FireBridge: Wildfire detection doesn't depend on utility response time. VIIRS satellite would detect any ignition within minutes — 9 hours before the troubleman arrived.
~5:15 PM PDT
Troubleman Discovers Fire — Calls for Help
PG&E worker reaches scene at ~4:30–4:50 PM, finds small fire at base of tree leaning on conductor with two blown fuses. Attempts to fight fire himself, radios for help. Cal Fire dispatched, arrives ~25 minutes after notification. Fire named 'Dixie Fire' after nearby road.
🛰️ FireBridge: Detection and zone generation would have occurred here — the moment FRP is detectable from orbit. Evacuation zone for Feather River Canyon communities auto-generated.
August 4
Greenville Destroyed — 22 Days Later
Fire reaches and destroys Greenville, a historic town of ~800. The town burned in a single evening push. Multiple communities threatened across 3 months of burning.
🛰️ FireBridge: Multi-day spread modeling flags threatened communities days in advance. Greenville residents would have had automated early warning as the fire approached Indian Valley.
Oct 25
963,309 Acres Burned — Contained After 104 Days
Largest single fire in CA history. First fire ever to burn across the Sierra Nevada crest. 1,311 structures destroyed. 1 USFS firefighter killed.
🛰️ FireBridge: Continuous autoscan tracks every flare-up and re-generates zones automatically. 104-day burn would generate thousands of automated zone updates.