The National Weather Service issued a critical weather warning for four states on Thursday, Feb. 19.

Yosemite is under a cold weather advisory which was issued by the National Weather Service on Thursday at 4:14 a.m. The advisory is valid from Friday 4 a.m. until Saturday Feb. 21, at 10 a.m.

National Weather Service officials are eyeing the threat of potential snow this weekend, including for the Hagerstown region.

On February 9, 1870, the creation of America's first national weather service transformed public safety by enabling timely storm warnings.

A series of snowstorms is slated to pass through Massachusetts this week, including one that could make Wednesday's commute slippery.

On Tuesday at 12:03 p.m. the National Weather Service released an updated winter weather advisory in effect until Thursday at 10 a.m. for Klamath Basin, Northern and Eastern Klamath County and Western Lake County and Central and Eastern Lake County.

The National Weather Service issued a winter weather advisory at 3:04 p.m. EST on Wednesday in effect until Thursday at 7 a.m. EST for Alger, Luce, Delta and Schoolcraft counties.

On Thursday at 1:51 a.m. the National Weather Service issued a winter weather advisory valid from 7 p.m. until Friday noon for Sussex County.

The National Weather Service released an updated winter weather advisory at 12:25 a.m. on Thursday in effect until 10 a.m. for Eastern Douglas County Foothills, South Central Oregon Cascades and Siskiyou Mountains and Southern Oregon Cascades.

At 1:51 a.m. on Thursday, the National Weather Service released a winter weather advisory valid from 7 p.m. until Friday noon for Carbon and Monroe counties.

Every year, the National Weather Service dedicates a week in late winter to help Tennesseans prepare for the upcoming spring severe weather season. The week ends with Severe Weather Awareness Day, a

Loveland will be sunny on Thursday with a high tempearture of 39 degrees, according to the National Weather Service website.