World’s Largest Active Volcano Erupts in Hawaii, Severe Weather for South

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The world’s largest active volcano has erupted in Hawaii for the first time in nearly 40 years, while the southern US braces for a major severe weather outbreak on Tuesday. Today’s weather alerts and the 3-day forecast.

NWS weather alerts

Here are Monday’s weather alerts from the National Weather Service (NWS).

Winter storm warning for portions of Washington, Oregon, Idaho, Wyoming, and Colorado.

Winter weather advisory for portions of Washington, Oregon, Idaho, Montana, Wyoming, Nevada, Utah, Colorado, New Mexico, South Dakota, Minnesota, Iowa, and Nebraska.

High wind warning for portions of New Mexico and western Texas.

Wind advisory for portions of Montana, Nevada, California, Arizona, and New Mexico.

Red flag warning: southeastern Colorado.

The world’s largest active volcano has erupted in Hawaii

Mauna Loa, the world’s largest active volcano, has erupted for the first time in nearly 40 years.

Mauna Loa erupted at 11:30 p.m. local time Sunday (4:30 a.m. ET Monday), according to the U.S. Geological Survey (USGS), NBC reported.

The volcano has erupted 33 times since 1843, according to the USGS, and its last eruption was in 1984. During that event, lava came within 4.5 miles of the biggest town on the island, Hilo, CBS reported.

“At this time, lava flows are contained within the summit area and are not threatening downslope communities,” the USGS said in its alert notice.

Residents have been warned to “review preparedness and refer to Hawai’i County Civil Defense information for further guidance.”

Major severe weather outbreak in South on Tuesday

The Storm Prediction Center (SPC) has issued a level 4 severe weather risk in the South, with levels 3 and 2 in surrounding areas for Tuesday.

The area of highest risk is “Tornado Alley,” which includes northeastern Louisiana, eastern Arkansas, western and northern Mississippi, into southwestern Tennessee.

The areas under alert ranging from a Level 2-Level 4 risk include eastern Texas, Louisiana, Mississippi, southern and eastern Arkansas, northwestern Alabama, western and central Tennessee, southeastern Missouri, southern Illinois, and western Kentucky.

The risks associated with these storms include damaging winds, large hail, tornadoes, and flooding rain.

The National Weather Service is warning of heavy rain on Tuesday that extends from Louisiana to Georgia and northward to Tennessee.

The 3-day forecast

Here is the latest 3-day forecast from the National Weather Service (NWS).

Monday: Heavy snow in the West

Snow in the West over much of Washington, Oregon, Idaho, Wyoming, Colorado, and Utah, as well as over portions of California, Nevada, Arizona, and New Mexico. Heavy snow over parts of Oregon, Idaho, Wyoming, and Colorado.

In the central US, snow over portions of Nebraska, South Dakota, North Dakota, Minnesota, Wisconsin, and northern Michigan.

In the Northeast, snow over northern New Hampshire and northern Maine.

Rain along the Texas Gulf into southwestern Louisiana. Rain over southern Florida. Spotty showers over parts of West Virginia, Maryland, Pennsylvania, and New York.

Tuesday: Severe weather in the South

Thunderstorms over the eastern half of the US, with significant severe weather in the south (see report above).

Snow in the West over portions of Washington, Oregon, Idaho, Montana, Wyoming, Utah, Colorado, and New Mexico, as well as into parts of the central US over Nebraska, South Dakota, Minnesota, Wisconsin, and northern Michigan.

Heavy snow is possible over parts of Washington, Oregon, Wyoming, Nebraska, Minnesota, Wisconsin, and northern Michigan.

A wintry mix over parts of the mid-central US, Great Lakes region, and Ohio Valley.

Wednesday: Northwestern snow, Eastern thunderstorms

Heavy snow in the Northwest over parts of Washington, Oregon, Northern California, Idaho, and Montana.

Snow around the Great Lakes region over Minnesota, Wisconsin, and northern Michigan.

Thunderstorms in the South, Southeast, and mid-Atlantic.

A wintry mix over parts of the middle Atlantic and Northeast.