Frigid weather will dominate the Pittsburgh area through Friday.
Temperatures Friday morning challenged the record low temperature of minus 1 F set in 1934.
Temperatures are projected to average 20 to 30 degrees below the normal high of 43 F for late February.
The city and much of the Northeast are forecast to be in for wintry precipitation beginning this weekend.
The heaviest snow, ice and rain are likely Sunday into Monday.
Until then, episodes of snow will generally be light and more of a nuisance.
Another push of cold air will follow.
The details on the storm, timing and which forms of precipitation are likely to dominate will follow in the days ahead.
Tune in to AccuWeather Live Midday every weekday at noon EST. We will be talking about the return of cold air in the Midwest and East, as well as more storms and the potential for rain in California.
The risk of drenching and locally gusty thunderstorms will expand northwestward over the balance of the week, reaching parts of Southern California, Arizona and Nevada.
While the heat wave and high humidity will recede in the Northeast to finish out the week, 90-degree F air may linger in many areas into August.
A cold front swinging across the northeastern United States will bring the threat of heavy, drenching thunderstorms Thursday afternoon.
The Stockholm Arlanda Airport in Sweden is giving travlers a chance to sample weather at various destinations around the world through the use of the Climate Portal.
Over 900 songwriters or singers have written or sung about weather, the most common being Bob Dylan, followed by John Lennon and Paul McCartney, according to British researchers, writing in the journal Weather.
Yuma farmers are starting to take measures to protect their livestock and crops amid one of the longest droughts on record in areas of the Southwest, particularly in the Colorado River Basin.
Thunderstorms with heavy rain flood and washed out many roads across the northeastern part of the state.
Columbia, SC (1991)
July 1991 became the wettest month ever with 17.46" of rain. The old record was 16.72" set in August 1949.
Gulf Coast (1995)
Tropical storm Dean entered the Texas coast near Galveston, TX. Galveston reported a wind gust of 51 mph, but just 0.54" of rain. Coastal roads were flooded across Louisiana.