Upper Trinity River storm history
Storm events recorded in Upper Trinity River, California between 1950 and 2025.
77
Total events
0
Tornadoes
0
Hail
2
Floods
1
Deaths
$9.6M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
Winter Storm Winter Storm
There were a few snowfall reports that met warning criteria. Snowfall amounts up to a foot were found near South Fork Mountain in western Trinity County. Snow levels were down to as low as the valley floor in Trinity County with chain requirements on Hwy's 3, 36, and 299 ranging …
Winter Storm Winter Storm
There were a few reports of snowfall meeting warning criteria, especially at lower elevations. Chain restrictions were required on some of the main roads and numerous traffic accidents were reported on these roads.
Winter Storm Winter Storm
Several spotters reported snowfall meeting warning criteria, especially at lower elevations. Chains were required on several roads and there were a few traffic accidents on these roads due to snow.
Winter Storm Winter Storm
Several spotters reported snowfall meeting warning criteria, especially at lower elevations. Caltrans posted their highest requirement of 'chains required, no exceptions' on some of the roads. Lots of traffic accidents were reported on these roads and some of them were closed at …
Winter Storm Winter Storm
Several spotters reported snowfall meeting warning criteria. Chain restrictions were required on one of the main roads.
Winter Storm Winter Storm
Several spotters reported snowfall meeting warning criteria. Chain restrictions were required on some of the main roads.
Winter Storm Winter Storm
Several spotters reported snowfall meeting warning criteria. Chain restrictions were required on some of the main roads and numerous traffic hazards were reported on these roads.
Winter Storm Winter Storm
Several spotters reported snowfall meeting warning criteria. Chain restrictions were required on some of the main roads and numerous traffic hazards were reported on these roads. One of the main roads had to be closed for an hour due to snow.
Heavy Snow Heavy Snow
Several spotters reported snowfall meeting warning criteria. Chain restrictions were required on some of the main roads and numerous hazards were reported on some of these roads. A few power outages were also reported across the area.
Heavy Snow Heavy Snow
Several spotters reported snowfall meeting warning criteria. Chain restrictions were also required on some of the main roads.
Heavy Snow Heavy Snow
Several spotters reported snowfall meeting warning criteria. Chain restrictions were also required on some of the main roads.
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Wildfire Wildfire
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy snow event with up to 15 inchesfalling during 24 hours
High Wind High Wind
Heavy Snow Heavy Snow
10-20" snow during event
Wildfire Wildfire
Lightning started 32 fires in the Shasta-Trinity National Forest. The largest was near Big Bar which burned about 200 acres by the end of June.
Heavy Snow Heavy Snow
SNOTEL reported snow accumulations of up to 28 inches above 4000 feet.
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
40" snow accumulation in Trinity Center. 17" snow in Weaverville and 36" snow ion Hayfork.
Heavy Snow Heavy Snow
12 inches of snow was generally reported with a peak amount of 30 inches.
Heavy Snow Heavy Snow
Eight inches of snow fell.
Heavy Snow Heavy Snow
Snow depth - 12 inches
Dense Fog Dense Fog
Heat Heat
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
About 8 inches of snow fell above 4500 feet elevation.
Heavy Snow Heavy Snow
Up to 10 inches of snow fell above 2500 feet elevation.
Heavy Snow Heavy Snow
8 to 12 inches of snow above 2500 feet.
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Nine inches of snow fell at the 2500 foot level near Coffee Creek.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2015 | 1 | 0 |
| 2013 | 1 | 0 |
| 2012 | 6 | 0 |
| 2011 | 3 | 0 |
| 2010 | 4 | 0 |
| 2008 | 7 | 0 |
| 2007 | 1 | 0 |
| 2006 | 1 | 0 |
| 2005 | 3 | 0 |
| 2004 | 4 | 0 |
| 2003 | 1 | 0 |
| 2002 | 6 | 0 |
| 2001 | 7 | 0 |
| 2000 | 3 | 0 |
| 1999 | 8 | 0 |
| 1998 | 17 | 0 |
| 1997 | 1 | 0 |
| 1996 | 3 | 0 |