Sumas, WA Live Doppler Radar

Live radar for Sumas, Whatcom County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for Sumas What TALON shows

What weather hits Sumas?

Since 1996, the National Weather Service has logged river or areal flooding on 5 days in the Lowlands of Western Whatcom County forecast zone and Whatcom County — the most common reported hazard around Sumas, mostly in November and January. Next come storm surge (2 days) and damaging thunderstorm winds (2 days).

Hazard	Days reported	Most recent	Worst on record
Flooding	5	Nov 2021	Nov 14, 2021 · 1 death · $34 million damage
Storm surge	2	Dec 2001	Dec 15, 2000 · $650,000 damage
Damaging thunderstorm winds	2	Jun 2012	Jun 23, 2012 · $1,000 damage
Lightning casualties & damage	1	Nov 1996	Nov 9, 1996 · $3,000 damage
Debris flows	1	Jan 2013	Jan 8, 2013 · $5,000 damage

Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Lowlands of Western Whatcom County forecast zone and Whatcom County; damage is as reported, not adjusted for inflation.

How much snow does Sumas get?

A normal year brings about 11 inches of snow to Sumas, based on NOAA's 1991–2020 climate normals for the Clearbrook weather station 3.4 miles away. The snowiest month is usually January (3.1 in).

Oct	Nov	Dec	Jan	Feb	Mar	Apr	May
0.0	1.3	2.6	3.1	2.7	1.0	0.1	0.0

Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.

Which radars cover Sumas?

The closest NEXRAD Doppler radar is KATX (Seattle/Tacoma, WA), about 56 miles south. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.

Radar	Distance	Lowest beam over Sumas	View
KATX Seattle/Tacoma, WA	56 mi south	4,200 ft	Good — most storms and steady rain or snow show clearly
KLGX Langley Hill, WA	155 mi southwest	19,200 ft	Limited — the beam overshoots the lowest part of storms
KRTX Portland, OR	229 mi south	36,800 ft	Limited — the beam overshoots the lowest part of storms

Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.

Tornado & hail history near Sumas

Since 1950, NOAA has recorded 1 tornado within 25 miles of Sumas. The strongest was an F0 on April 27, 2004, which touched down about 2 miles east of town.

Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.

On TALON you get Sumas's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.

Sumas radar FAQ

Where is the nearest weather radar to Sumas, WA?

KATX (Seattle/Tacoma, WA), about 56 miles south. KLGX (Langley Hill, WA) is 155 miles away and also covers the area.

How often does Sumas flood?

Since 1996 the National Weather Service has logged river or areal flooding on 5 days in the Lowlands of Western Whatcom County forecast zone and Whatcom County; the deadliest was on November 14, 2021, with 1 death. TALON's free flash-flood risk layer shows, every 2 minutes, how close the rain that has fallen is to what it takes to flood — turn it on under Layers.

Is TALON's radar for Sumas free?

Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.

Should I rely on radar for my safety?

No app replaces official warnings. When the National Weather Service issues a warning for Sumas, follow it right away — see watch vs. warning.

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