Mauna Loa Southwest Rift Zone Webcam – Hawaiʻi Volcanoes National Park

The Mauna Loa Southwest Rift Zone Webcam provides a live view of the upper portion of Mauna Loa’s Southwest Rift Zone on Hawaiʻi Island. Known as the M3cam, this remote monitoring camera offers a valuable perspective across the rugged high-elevation volcanic terrain extending southwest from Mauna Loa’s summit.

Mauna Loa is one of the world’s largest active volcanoes, and its two primary rift zones extend northeast and southwest from Mokuʻāweoweo, the volcano’s summit caldera. These rift zones are important areas for volcanic monitoring because magma can migrate away from the summit and erupt from vents along the volcano’s flanks.

Watch Mauna Loa’s Southwest Rift Zone Live

The M3cam provides a direct look across the upper Southwest Rift Zone, where the landscape is dominated by lava flows, fissures, vents, and other volcanic features created during previous eruptions.

During periods of volcanic unrest or eruption, monitoring cameras can help document visible changes across remote areas of Mauna Loa. Depending on the location and intensity of activity, cameras may capture volcanic glow, lava flows, fountains, or plumes.

During quieter periods, the webcam offers a fascinating look at Mauna Loa’s enormous high-elevation landscape and changing atmospheric conditions.

Check Summit Weather & Visibility

The upper Southwest Rift Zone sits thousands of feet above Hawaiʻi Island’s tropical coastline. Weather here can be dramatically different from conditions at sea level.

Temperatures can fall below freezing, particularly at night and during winter. Strong winds, clouds, fog, rain, ice, and occasional snow can affect the upper slopes of Mauna Loa.

The webcam provides a useful visual indication of visibility and changing weather across the rift zone. Clear days can reveal expansive volcanic terrain, while clouds and fog may completely obscure the landscape.

Because Mauna Loa remains an active volcano, the webcam should not be used by itself to determine volcanic hazards or whether backcountry areas are safe to enter.

About Mauna Loa’s Southwest Rift Zone

Mauna Loa’s Southwest Rift Zone extends from Mokuʻāweoweo Caldera at the volcano’s summit toward the southwestern coast of Hawaiʻi Island. It is one of two major rift zones associated with Mauna Loa, with the Northeast Rift Zone extending in the opposite direction.

Rift zones are areas where the volcano’s structure allows magma to move away from the summit through underground fractures. When magma reaches the surface, eruptions can occur from fissures and vents located miles from the summit caldera.

The Southwest Rift Zone has produced numerous lava flows during Mauna Loa’s eruptive history. Some eruptions have sent lava rapidly down the volcano’s steep southwestern slopes toward lower-elevation communities and the ocean.

The upper rift zone is an exceptionally remote volcanic environment. Much of the landscape consists of relatively barren lava fields, fissures, cones, vents, and overlapping flows from different eruptive periods.

The region lies within or near the extensive protected volcanic landscape of Hawaiʻi Volcanoes National Park. Unlike the developed visitor areas around Kīlauea, reaching Mauna Loa’s upper elevations requires demanding backcountry travel and preparation for high-altitude conditions.

Weather presents an additional challenge. Mauna Loa rises to more than 13,000 feet, and its upper slopes can experience freezing temperatures, strong winds, intense sunshine, rapidly developing clouds, and occasional winter snow.

The M3cam allows viewers to observe this otherwise difficult-to-reach landscape remotely. Together with cameras monitoring Mokuʻāweoweo and the Northeast Rift Zone, the Mauna Loa Southwest Rift Zone Webcam provides another perspective on the enormous volcanic system beneath Hawaiʻi Island.

See Hawaiʻi Volcanoes National Park Webcams

Why Use the Mauna Loa Southwest Rift Zone Webcam?

• View the upper Southwest Rift Zone of Mauna Loa.
• Observe remote high-elevation volcanic terrain.
• Monitor clouds, fog, snow, and changing weather.
• Check visibility across Mauna Loa’s upper slopes.
• Watch for visible volcanic activity when present.
• Compare conditions with Mauna Loa summit webcams.
• Observe lava fields, fissures, and volcanic features.
• View a remote area of Hawaiʻi Island that few visitors experience.

Where is the Mauna Loa Southwest Rift Zone Webcam located?

The M3cam monitors the upper Southwest Rift Zone of Mauna Loa on Hawaiʻi Island, extending southwest from the volcano’s summit and Mokuʻāweoweo Caldera.

Can I check road conditions with this webcam?

No. The M3cam is a remote volcanic monitoring camera rather than a traffic webcam and does not provide a direct view of public roads.

Does the webcam show weather conditions?

Yes. The webcam provides a useful look at clouds, fog, precipitation, snow, and general visibility across Mauna Loa’s high-elevation Southwest Rift Zone.

Is the webcam live?

Yes. The M3cam provides a live or regularly updated view of Mauna Loa’s upper Southwest Rift Zone. Because Mauna Loa is an active volcano, webcam imagery should not be used by itself to determine volcanic hazards or safe access.