Thomas Mountain, California

Prominence: 1945 ft, 593 m

Elevation: 6825 feet, 2080 meters

True Isolation: 6.19 mi, 9.96 km
Elevation Info:NAVD88 Elevation: 6828 ft / 2081 m
Latitude/Longitude (WGS84)33° 37' 16'' N, 116° 40' 58'' W
33.621227, -116.682836 (Dec Deg)
529419 E 3720205 N, Zone 11 (UTM)
CountryUnited States
County/Second Level RegionRiverside

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Lists that contain Thomas Mountain:
     Sierra Club Hundred Peaks Section (Rank #128)
     Comprehensive Combo Angeles Chapter List (Rank #419)
     California Peaks with 1000 feet of Prominence (Rank #179)
     California Fire Lookouts (Rank #117)

Ascent Info

Total successful ascents logged by registered users: 239
     Show all viewable ascents/attempts (Total: 221)

Selected Trip Reports:
     2008-10-25 by Mat Kelliher
     2009-03-13 by Don Raether
     2009-04-19 by Bob Burd
     2009-05-02 by Amin Faraday
     2011-12-31 by James Barlow
     2013-05-11 by Scott Surgent
     2014-12-05 by Kathy Wing (GPS Track)
     2015-01-17 by Miriam Khamis
     2015-03-10 by Karl Fieberling
     2015-06-19 by James Barlow
     2016-01-24 by Patrick ONeill (GPS Track)
     2016-02-02 by Joseph Esparza
     2016-05-30 by Mihai Giurgiulescu (GPS Track)
     2017-10-11 by Jim Conant
     2018-07-18 by Mike Bromberg
     2018-09-01 by Robert Luher (GPS Track)
     2018-09-15 by Mat Kelliher
     2018-09-15 by Michael Dillenback
     2018-09-15 by Mat's SC leads
     2018-10-04 by David Sharg (GPS Track)
     2019-06-09 by Joseph Hirniak
     2020-05-26 by Vic Hanson (GPS Track)
     2021-02-21 by William Musser (GPS Track)
     2021-02-27 by Chad Thomas (GPS Track)
     2021-04-03 by Rick Sarpolus (GPS Track)
     2021-07-05 by Doran Brown
     2021-08-28 by JohnE Sarna (GPS Track)
     2021-10-06 by Bob Davey
     2021-10-21 by Greg Gerlach (GPS Track)
     2021-11-29 by Steve Casimiro

Nearby Peak Searches:
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     Prominence Ladder from Thomas Mountain

Click on photo for original larger-size version.
Thomas Mountain in center, with Toro Peak in the distance on the right (CC-BY-SA) (2017-01-08). Photo by William Chen.
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: 1945 ft/593 m
  Optimistic Prominence: 1985 ft/605 m
  Key Col: 4880 ft/1487 m
IsolationIsolation Page  (Detailed isolation information)
   Distance: 6.19 mi/9.96 km
   Isolation Limit Point: 33.6783, -116.6
Nearest Higher Neighbor in the PBC database:
    Lion Peak  (NE)
RangesContinent: North America
Range2: Pacific Ranges
Range3: Central and Southern California Ranges
Range4: Peninsular Southern California Ranges
Range5: San Jacinto Mountains
Drainage BasinsSan Jacinto
Internal Drainage-N.A.
Worldwide Internal Drainage
OwnershipLand: San Bernardino National Forest
Topo MapAnza O33116e6 1:24,000
Data Source1:25,000 (or larger) Topographic Survey Map
Dynamic Map

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Other Photos

Click on photo for original larger-size version.
Thomas Mountain (summit upper right not visible) from the lower reaches of the Ramona Trail (2019-06-09). Photo by Joseph Hirniak.
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Click on photo for original larger-size version.
Thomas Mountain Lookout Tower built in the 1930s (2021-04-03). Photo by Rick Sarpolus.
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