Silo Mountain, Washington

Prominence: 2430 ft, 741 m

Elevation: 4150 feet, 1265 meters

True Isolation: 5.61 mi, 9.03 km
Elevation Info:NAVD88 Elevation: 4154 ft / 1266 m
Local or Alternate Name(s)Alternate: Big Haystack
Latitude/Longitude (WGS84)48° 26' 4'' N, 122° 4' 40'' W
48.434499, -122.077759 (Dec Deg)
568215 E 5365006 N, Zone 10 (UTM)
CountryUnited States
County/Second Level RegionSkagit

Search Engines - search the web for "Silo Mountain":
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Other Web Sites
     Silo Mountain (Big Haystack) at
     Silo Mountain at
     Silo Mountain at Summits on the Air (Amateur Radio)

Weather and Snow
     National Weather Service Forecast
     NOAA Snow Depth Map

Lists that contain Silo Mountain:
     Washington State Peaks with 2000 feet of Prominence (Rank #89)
     Washington State Top 200 by Prominence (Rank #89)

Ascent Info

Total successful ascents logged by registered users: 34
     Show all viewable ascents/attempts (Total: 32)

Selected Trip Reports from this site:
     2007-11-24 by Eric Noel
     2010-08-07 by Ken Russell
     2013-03-17 by James Barlow (GPS Track)
     2013-11-23 by Stu Frink
     2014-10-04 by George Burgess (GPS Track)
     2017-10-09 by Jake Robinson
     2019-10-27 by Connor McEntee (GPS Track)

Nearby Peak Searches:
     Radius Search - Nearest Peaks to Silo Mountain
     Elevation Ladder from Silo Mountain
     Prominence Ladder from Silo Mountain

Click on photo for original larger-size version.
Silo Mountain from summit base of Haystack Mountain (2017-05-13). Photo by Curt Baxstrom.
Click here for larger-size photo.
Web Map LinksPeakfinder Panorama
GeoHack Links   CalTopo   MyTopo   Bing Maps
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ProminenceKey Col Page  (Detailed prominence information)
  Clean Prominence: 2430 ft/741 m
  Optimistic Prominence: 2470 ft/753 m
  Line Parent: Gee Point North
  Key Col: 1720 ft/524 m
IsolationIsolation Page  (Detailed isolation information)
   Distance: 5.61 mi/9.03 km
   Isolation Limit Point: 48.4317, -121.9558
Nearest Higher Neighbor in the PBC database:
    Coal Mountain  (E)
RangesContinent: North America
Range2: Pacific Ranges
Range3: Cascade Range
Range4: North Cascades
Range5: Mountain Loop Area
Range6: Cultus Mountains (Highest Point)
Drainage BasinsSkagit
Puget Sound
Strait of Juan de Fuca
Pacific Ocean
OwnershipLand: Logging Company Land in Washington
Topo MapHaystack Mountain O48122d1 1:24,000
Data Source1:25,000 (or larger) Topographic Survey Map
Dynamic Map

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