Mt Rainier

A panorama of the south face of Mount Rainier with Kautz Ice Cliff visible at center viewed from Westside Road, Washington State Route 706, Mount Rainier National Park

Jump to seismograms

Text Source: Wikipedia
Mount Rainier is a massive stratovolcano located 54 miles (87 km) southeast of Seattle in the state of Washington, United States. It is the most topographically prominent mountain in the contiguous United States and the Cascade Volcanic Arc, with a summit elevation of 14,411 feet (4,392 m). Mt. Rainier is considered one of the most dangerous volcanoes in the world, and it is on the Decade Volcano list.Because of its large amount of glacial ice, Mt. Rainier could potentially produce massive lahars that would threaten the whole Puyallup River valley.

Mount Rainier is the highest mountain in Washington and the Cascade Range. Mount Rainier has a topographic prominence of 13,211 feet (4,027 m), greater than that of K2 (13,189 feet (4,020 m)).[3] On clear days it dominates the southeastern horizon in most of the Seattle-Tacoma metropolitan area to such an extent that locals sometimes refer to it simply as “the Mountain.”[11] On days of exceptional clarity, it can also be seen from as far away as Portland, Oregon, Badger Mountain, Washington, and Victoria, British Columbia.

With 26 major glaciers and 36 square miles (93 km2) of permanent snowfields and glaciers, Mount Rainier is the most heavily glaciated peak in the lower 48 states. The summit is topped by two volcanic craters, each more than 1,000 feet (300 m) in diameter with the larger east crater overlapping the west crater. Geothermal heat from the volcano keeps areas of both crater rims free of snow and ice, and has formed the world’s largest volcanic glacier cave network within the ice-filled craters, with nearly 2 miles (3.2 km) of passages. A small crater lake about 130 by 30 feet (40 by 9.1 m) in size and 16 feet (5 m) deep, the highest in North America with a surface elevation of 14,203 feet (4,329 m), occupies the lowest portion of the west crater below more than 100 feet (30 m) of ice and is accessible only via the caves.

The Carbon, Puyallup, Mowich, Nisqually, and Cowlitz Rivers begin at eponymous glaciers of Mount Rainier. The sources of the White River are Winthrop, Emmons, and Fryingpan Glaciers. The White, Carbon, and Mowich join the Puyallup River, which discharges into Commencement Bay at Tacoma; the Nisqually empties into Puget Sound east of Lacey; and the Cowlitz joins the Columbia River between Kelso and Longview.

Subsidiary peaks
The named summits are Liberty Cap (left), Columbia Crest (the summit proper), and Point Success (right).

The broad top of Mount Rainier contains three named summits. The highest is called the Columbia Crest. The second highest summit is Point Success, 14,158 feet (4,315 m), at the southern edge of the summit plateau, atop the ridge known as Success Cleaver. It has a topographic prominence of about 138 feet (42 m), so it is not considered a separate peak. The lowest of the three summits is Liberty Cap, 14,112 feet (4,301 m), at the northwestern edge, which overlooks Liberty Ridge, the Sunset Amphitheater, and the dramatic Willis Wall. Liberty Cap has a prominence of 492 feet (150 m), and so would qualify as a separate peak under most of strictly prominence-based rules. A prominence cutoff of 400 feet (122 m) is commonly used in Washington state.

High on the eastern flank of Mount Rainier is a peak known as Little Tahoma Peak, 11,138 feet (3,395 m), an eroded remnant of the earlier, much higher, Mount Rainier. It has a prominence of 858 feet (262 m), and it is almost never climbed in direct conjunction with Columbia Crest, so it is usually considered a separate peak. If considered separately from Mt. Rainier, Little Tahoma Peak would be the third highest mountain peak in Washington.
Source: Wikipedia

If you are interested in the climbing on Mt Rainier visit for more pictures and details of the climbs. Also of interest on that page are the images of Camp Muir and Camp Schurman – the locations of 2 of the Mt Rainier seismographs.

The main seismograph stations for Mt Rainier are shown on the map below. Below the map are links to the current and previous day seismograms for these stations.

(Dist miles)
Link Link
STAR (1.41m)
St Andrews Rock
Today Yesterday
RCM (1.67m)
Rainier Camp Muir
Today Yesterday
RCS (1.9m)
Rainier Camp Schurman
Today Yesterday
OBSR (4.4m)
Observation Rock, Mt. Rainier
Today Yesterday
RER (4.5m)
Rainier Emerald Ridge
Today Yesterday
PANH (5.7m)
Panhandle Gap. Mt. Rainier
Today Yesterday
FMW (7.4m)
Mt. Fremont
Today Yesterday
LON (7.5m)
Longmire CREST broad-band
Today Yesterday
LON (7.5m)
Longmire CREST broad-band
Today Yesterday
LO2 (7.5m)
Longmire short period
Today Yesterday
RVC (11.7m)
Mt. Rainier – Voight Creek
Today Yesterday
WPW (14.9m)
White Pass
Today Yesterday

Other useful links

Mount Rainier Seismicity Information


4 Responses to Mt Rainier

  1. Olivine says:

    Wonderful work, as always, Sir! I have added this page to my favorites. BTW, what do you make of the signals at 16:20:40 and 16:59:10 UTC today? Anything interesting in the spectrograms?

  2. Olivine says:

    Thank you, PM. Now I have a solid reference to compare future events with. Much appreciated.

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