Washington earthquakes

M1.5 earthquake 7 km SSW of Malott, Washington

A magnitude 1.5 earthquake struck 7 km SSW of Malott, Washington on Tue, Jul 22, 2003, 5:55 PM PDT (00:55 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.9 37 km W of Granite Falls, Washington. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2003-07-23 00:55:57 UTC
Depth
-0.3 km (-0.2 mi), shallow
Epicenter
48.216° N, 119.727° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.4 km horizontally
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
249°, poorly surrounded by stations
Stations used
7

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 1.64 km NNW of Tonasket, Washington · 8455 days ago · 0 km deep · 62 km away
  2. 1.59 km SSW of Chelan Falls, Washington · 8455 days ago · 4 km deep · 59 km away
  3. 1.88 km WNW of Entiat, Washington · 8454 days ago · -1 km deep · 71 km away
  4. 1.710 km W of Twisp, Washington · 8446 days ago · -1 km deep · 43 km away
  5. 1.75 km SSW of Entiat, Washington · 8439 days ago · -1 km deep · 76 km away
  6. 2.937 km W of Granite Falls, Washington · 8437 days ago · 5 km deep · 79 km away
  7. 1.936 km N of Leavenworth, Washington · 8436 days ago · 5 km deep · 79 km away
  8. 2.14 km W of Entiat, Washington · 8431 days ago · 4 km deep · 73 km away
  9. 1.952 km WNW of Granite Falls, Washington · 8428 days ago · -1 km deep · 87 km away
  10. 1.88 km SSE of Loomis, Washington · 8419 days ago · -1 km deep · 60 km away

Before

  1. 1.525 km WNW of Inchelium, Washington · 8480 days ago · 6 km deep · 93 km away
  2. 1.731 km NNW of Leavenworth, Washington · 8486 days ago · -1 km deep · 93 km away
  3. 1.95 km WSW of Entiat, Washington · 8486 days ago · -1 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10599618. Read Thu, Oct 1, 2026, 11:21 PM UTC.