San Juan storm history
Storm events recorded in San Juan, Washington between 1950 and 2025.
125
Total events
0
Tornadoes
0
Hail
2
Floods
1
Deaths
$5.2M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
Winter Weather Winter Weather
One and two tenths of an inch of snowfall was recorded 8 miles east-southeast of Friday Harbor, WA.
Heat Heat
Observations over the San Juan Islands recorded a period of above normal temperatures with afternoon highs ranging from the upper 70s to mid 80s.
Winter Weather Winter Weather
Multiple CoCoRaHS observers in the San Juans reported 11 inches of snowfall on Lopez Island, with a report of 11 inches also on Orcas Island. A report on Friday Harbor ranging from 9 to 11 inches. Wintry weather mainly ended later on the morning of the 20th.
High Wind High Wind
The DW7371 CWOP on Lopez Island in San Juan County reported sustained wind of 42 mph with a gust of 60 mph around midnight on April 4th.
Heavy Snow Heavy Snow
A Winter Storm affected most of the San Juan Islands during the final week of December. Reports from the Islands generally ranged from 3 to 6 inches.
Flood Flood
Heavy rain cause urban and small stream flooding, washing out some roads.
Strong Wind Strong Wind
The ASOS at Friday Harbor in the San Juan Islands reported a gust of 54 mph around 2245L on 10/24.
Heat Heat
An extended period of hot weather affected the San Juan Islands at the end of June. The ASOS at Friday Harbor recorded high temperatures in the mid 90s from 6/26-6/28 before temperatures finally began to cool on 6/29.
Winter Storm Winter Storm
A significant winter storm brought heavy snowfall to the San Juan Islands late in the evening and into the overnight period from February 12 to February 13. Local CoCoRaHs reports around daybreak on February 13 ranged from generally 5-10 inches of snow through that short time per…
High Wind High Wind
During the morning and early afternoon hours, strong winds plagued the San Juan Islands, with Mesonet DW7371 reporting a wind gust of 60 mph on Lopez Island. Mesonet DW5375 on Decatur Island reported a wind gust of 59 mph. Trees on power lines also caused power outages on Orcas I…
Winter Weather Winter Weather
A strong cold frontal passage brought a changeover from rain to wet, dense snow during the afternoon hours on December 21. These conditions led to a quick accumulation of generally 1-2 inches of snow (with an isolated report of 5 inches) that covered grassy surfaces and some road…
Winter Storm Winter Storm
Another round of winter weather moved through the area on the 14th and into the 15th. Snowfall totals with this storm were much higher in San Juan County than the previous winter storm. New snow accumulation around the county ranged from generally 6-10 inches.
Winter Storm Winter Storm
Snow began falling on the 12th as cold air remain trapped near the surface and weather system passed over the area. This was the first lowland snow event of the season and the year. General snowfall totals ranged from a trace to around an inch.
Heavy Snow Heavy Snow
There were numerous reports of 3-7 inches.
High Wind High Wind
Lopez Island had wind NE42g61 mph 2/9 0519 - 0529 PST.
High Wind High Wind
Lopez Island had wind NE47g58 mph 2/3 2215 - 4/1005 PST.
High Wind High Wind
Lopez Island recorded 43 mph sustained wind.
High Wind High Wind
Lopez Island recorded 41-51 mph sustained wind with 59 mph gusts.
High Wind High Wind
Lopez Island recorded 66 mph sustained wind, gusting to 62 mph. A spotter at Cattle Point on San Juan Island recorded 45 mph sustained wind, gusting to 72 mph, with a hand-held anemometer.
High Wind High Wind
Lopez Island had sustained wind 41-44 mph.
High Wind High Wind
Lopez Island recorded sustained wind of 42-46 mph for several hours.
High Wind High Wind
Lopez Island recorded sustained wind of 44 mph.
High Wind High Wind
Lopez Island recorded 41 mph sustained wind at 927 AM.
High Wind High Wind
Lopez Island recorded 45 mph sustained wind at 157 PM.
High Wind High Wind
Lopez Island recorded 43 mph sustained wind 536 PM to 646 PM.
High Wind High Wind
Lopez Island gusted to 62 mph at 122 PM.
High Wind High Wind
Lopez Island recorded 47 mph sustained wind off and on between 817 PM on Feb 11 and 1237 AM on Feb 12.
High Wind High Wind
Lopez Island recorded sustained wind of 49 mph, gusting to 63 mph, over several hours. Eastsound recorded a 61 mph gust.
High Wind High Wind
Lopez Island recorded 49 mph sustained wind.
High Wind High Wind
Lopez Island recorded sustained wind of 45 mph.
High Wind High Wind
Lopez Island recorded 41 mph sustained wind.
High Wind High Wind
Lopez Island had sustained wind of 44 mph.
High Wind High Wind
Lopez Island recorded 57 mph sustained wind, gusting to 63 mph.
High Wind High Wind
Lopez Island had sustained wind of 41 mph.
High Wind High Wind
Lopez Island had sustained wind of 30 mph or more from 852 AM to 312 PM. Highest sustained wind was 41 mph with a peak gust of 55 mph. This verifies the high wind warning for this first event of the season, when lower criteria for high wind are in effect.
High Wind High Wind
Lopez Island recorded sustained wind of 41 mph, gusting to 65 mph.
High Wind High Wind
Lopez Island recorded 49g53 mph.
High Wind High Wind
Lopez Island recorded 44g46 mph.
High Wind High Wind
Lopez Island recorded sustained wind 40-43 mph off and on from 1015 AM on the 10th to 335 AM on the 11th.
High Wind High Wind
Lopez Island recorded high wind of 40 mph gusting to 47 mph.
High Wind High Wind
Lopez Island recorded SE44g56 mph.
High Wind High Wind
Lopez island recorded 46g55 mph.
High Wind High Wind
Lopez Island recorded 49g54 mph.
High Wind High Wind
Lopez Island recorded 51g60 mph.
High Wind High Wind
The Friday Harbor ASOS recorded 33g53 mph over a few hours. Lopez Island recorded 47g58 mph over several hours. This verifies high wind for the first event of the season, when wind advisory criteria (30-39 mph, gusts 45-57 mph) are used to verify high wind.
High Wind High Wind
Lopez Island recorded 53g66 mph over a few hours. North Andrews Bay measured 40g58 mph.
High Wind High Wind
Lopez Island recorded 53g62 mph for several hours. Decatur Island observed 40g57 mph.
High Wind High Wind
Lopez Island recorded 40+ mph sustained wind over a few hours.
High Wind High Wind
Lopez Island recorded 44g58 mph over a couple of hours.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 1 | 0 |
| 2023 | 1 | 0 |
| 2022 | 2 | 0 |
| 2021 | 6 | 0 |
| 2020 | 3 | 0 |
| 2019 | 4 | 0 |
| 2018 | 11 | 0 |
| 2017 | 12 | 0 |
| 2016 | 11 | 0 |
| 2015 | 10 | 0 |
| 2014 | 8 | 0 |
| 2013 | 1 | 0 |
| 2012 | 8 | 0 |
| 2011 | 3 | 0 |
| 2010 | 2 | 0 |
| 2009 | 2 | 0 |
| 2008 | 2 | 0 |
| 2007 | 2 | 0 |
| 2006 | 5 | 0 |
| 2005 | 2 | 0 |
| 2004 | 2 | 0 |
| 2003 | 5 | 0 |
| 2002 | 4 | 0 |
| 2001 | 3 | 0 |
| 2000 | 3 | 0 |
| 1999 | 3 | 0 |
| 1998 | 3 | 0 |
| 1996 | 6 | 0 |