Sourdough Peak is a 6,201-foot (1,890 meter) mountain summit located at the southern edge of the

Wrangell Mountains The Wrangell Mountains are a high mountain range of eastern Alaska in the United States. Much of the range is included in Wrangell-Saint Elias National Park and Preserve. The Wrangell Mountains are almost entirely volcanic in origin, and they i ...

, in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

. The peak is situated in Wrangell-St. Elias National Park and Preserve, east-southeast of

McCarthy McCarthy (also spelled MacCarthy or McCarty) may refer to: * MacCarthy, a Gaelic Irish clan * McCarthy, Alaska, United States * McCarty, Missouri, United States * McCarthy Road, a road in Alaska * McCarthy (band), an indie pop band * Château MacC ...

, on the north bank of the

Nizina River Nizina River is the largest tributary of the Chitina River in the U.S. state of Alaska. It is located in the Wrangell–St. Elias National Park and Preserve. Geography The stream heads in Nizina Glacier, flows southward about to a point near the ...

. The peak is notable for a

rock glacier Rock glaciers are distinctive geomorphological landforms, consisting either of angular rock debris frozen in interstitial ice, former "true" glaciers overlain by a layer of talus, or something in-between. Rock glaciers are normally found at high ...

on its south slope. The peak's name was used by early prospectors as reported in 1908 by the

USGS The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, a ...

. A "sourdough" is defined as an experienced prospector or an old-timer in the western US or Canada, because they always carried

sourdough starter Sourdough or sourdough bread is a bread made by the fermentation of dough using wild lactobacillaceae and yeast. Lactic acid from fermentation imparts a sour taste and improves keeping qualities. History In the ''Encyclopedia of Food Microbio ...

with them. Sourdough Peak's nearest higher neighbor is Porphyry Mountain, 5.1 miles to the northwest.

Climate

Based on the

Köppen climate classification The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...

, Sourdough Peak is located in a

subarctic climate The subarctic climate (also called subpolar climate, or boreal climate) is a climate with long, cold (often very cold) winters, and short, warm to cool summers. It is found on large landmasses, often away from the moderating effects of an ocean, ge ...

zone with long, cold, snowy winters, and cool summers. Winds coming off the

Gulf of Alaska The Gulf of Alaska (Tlingit: ''Yéil T'ooch’'') is an arm of the Pacific Ocean defined by the curve of the southern coast of Alaska, stretching from the Alaska Peninsula and Kodiak Island in the west to the Alexander Archipelago in the east, ...

are forced upwards by the Wrangell Mountains (

orographic lift Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain. As the air mass gains altitude it quickly cools down adiabatically, which can raise the relative humidity to 100% and cr ...

), causing heavy precipitation in the form of rainfall and snowfall. Winter temperatures can drop below −20 °C with wind chill factors below −30 °C. The months May through June offer the most favorable weather for viewing and climbing.

References

{{reflist

External links

* Weather forecast
Sourdough Peak
Mountains of Alaska Landforms of Copper River Census Area, Alaska Wrangell–St. Elias National Park and Preserve North American 1000 m summits

Climate

See also

References

External links