Volcano profile

United States

Jefferson.

Volcano profile for Jefferson in United States, including its current status, catalog data, nearby earthquakes and live map layers.

Live mapAll volcanoes
Current status
No current eruption report
Volcano type
Stratovolcano
Elevation
3,199 m
Last documented eruption
950
Coordinates
44.674°, -121.8°
GVP number
322020

Live map

Live map around Jefferson

Satellites & ash clouds

Map options

Airports and nuclear plants provide geographic context. Being in or near an area does not establish closure, damage or a specific hazard.

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No current eruption report

United States

Jefferson

Stratovolcano

Elevation
3,199 m
Last documented eruption
950
No current eruption report

No current report does not mean extinct or safe. Source coverage varies between volcanoes.

Geography & tectonics
Coordinates
44.674°, -121.8°
Volcanic region (GVP)
High Cascades Volcanic Arc
Tectonic setting
Subduction zone / Continental crust (> 25 km)
GVP
322020
Documented eruptions · Nearby earthquakes ↓

Source: Smithsonian Global Volcanism Program

This display is not an official warning. Follow information from the responsible authorities when making local decisions.

Profile

Jefferson · United States

Documented eruptions

Latest catalogue records. Historical records are incomplete; missing values are unknown. VEI describes eruption explosivity.

StartEndVEIReport status
950Uncertain datingNot available—Confirmed eruption
4500 BCEUncertain datingNot available—Confirmed eruption

Source: Smithsonian GVP · Dataset date: 2026-09-21

Nearby earthquakes

Last 7 days · 100 km · up to 10 events. Proximity does not establish a volcanic cause.

  • No recorded events in this selection.
Nearby earthquakes ↗

QuakeMap24

Volcano at a glance

Map view with the current report status and volcano elevation.

Jefferson · No current eruption report · 3,199 m

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Roberts FieldUnited States · RDM · KRDM
    69.6 kmStraight-line distance
  • Salem-Willamette Valley Airport/McNary FieldUnited States · SLE · KSLE
    98.5 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-21

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Active volcanoes

Active volcanoes

Other volcanoes with a current eruption report.

Eruption reportedAiraJapanCaldera · 1,117 mEruption reportedDukonoIndonesiaVolcanic complex · 1,273 mEruption reportedGreat SitkinUnited StatesStratovolcano · 1,740 mEruption reportedIbuIndonesiaStratovolcano · 1,357 mEruption reportedKanlaonPhilippinesStratovolcano · 2,422 mEruption reportedKarangetangIndonesiaStratovolcano · 1,797 mEruption reportedKlyuchevskoyRussiaStratovolcano · 4,754 mEruption reportedKrakatauIndonesiaCaldera · 285 m

QuakeMap24

Sources & data dates

Core data comes from the Smithsonian Global Volcanism Program and USGS. Map layers and live aircraft are loaded from the sources identified on the page.

This display is not an official warning. Follow information from the responsible authorities when making local decisions.

VAAC / NOAA NWS

Satellite layers · Last successful retrieval: Sep 21, 2026, 2:53 PM UTC