Critical Fire Weather Threats and Dangerous Heat Continue Across the West - Dangerously hot temperatures and critical fire weather conditions will continue to be possible early this week over the Desert Southwest. Further north, severe thunderstorms will be possible from the northern Plains to the upper Midwest on Monday, expanding into the Great Lakes on Tuesday.

Severe Thunderstorm Threat Over The Northwest U.S., Critical Fire Weather And Dangerous Heat Over The Southwest = The threat for severe thunderstorms capable of damaging winds and a few tornadoes will continue over the Northwest U.S. into Sunday morning. Over the Southwest U.S. and into the Great Basin, dangerously hot temperatures, critical fire weather, and a dry thunderstorm threat will persist through Sunday.

Severe Thunderstorm Threat Over The Eastern U.S., Critical Fire Weather Likely Over The Southwest - A cold front will bring the threat for scattered strong to severe thunderstorms from the Mid Atlantic to New England into Saturday morning. Some of the storms could produce damaging winds and locally heavy rainfall. Dangerously hot and dry conditions will persist over the Desert Southwest this weekend. Critical fire weather conditions likely.

Severe Storms For The Northeast U.S..; Heat And Fire Out West - A strong cold front will likely trigger severe thunderstorms and locally heavy rain on Friday from the Interior Northeast into the eastern Ohio Valley and northern Mid-Atlantic region, especially in New York state and Pennsylvania. Meanwhile, in addition to the ongoing heat wave in the West, fire weather concerns are increasing across the Great Basin into the Four Corners region.

Tropical Depression Bertha Lifting North; Isolated Severe Across Southern U.S.; Heat Continues In West - Tropical Depression Bertha continues to weaken and lift north toward the central Appalachians and eastern Ohio Valley. Heavy rain, gusty winds and flooding are likely. Meanwhile, isolated severe thunderstorms are possible on Thursday from the Southeast to south-central High Plains. Finally, the ongoing heat wave continues in the West and will expand into the Rockies by the weekend.

Heavy Rain For Carolinas and Virginia; Severe In Texas; Heat Out West - An area of low pressure and tropical moisture will surge into parts of the Carolinas and Virginia. Heavy rain and flooding are likely today into tonight. Severe thunderstorms with all hazards are likely in central Texas later today. Finally, the sweltering heat wave will continue the rest of the week across the West, expanding across the Rockies by the weekend.

A Sweltering Heat Wave For The West - A sweltering heat wave with record breaking temperatures is expected the rest of the week in much of the West, as a large dome of high pressure builds and expands across the region. Numerous excessive heat warnings and advisories are already in effect across Arizona, California and Nevada. Also, locally heavy rain is possible in the Lower Mississippi Valley and Southeast over the next few days.

Thunderstorms, Heavy Rain and Heat in the Memorial Day Forecast - Strong to severe thunderstorms and heavy rain with possible flash flooding are expected from Texas to the Upper Mississippi Valley on Memorial Day. Also, a soaking rain with flooding is expected across south-central Florida. Meanwhile, a week of record breaking heat is going to get started across California into the Southwest and Great Basin, as excessive heat warnings stretch across the region.

Severe Storms and Heavy Rain in the Plains; Critical Fire Weather in the Southwest - A strong cold front will produce strong to severe storms in the Plains and Great Lakes. Primary threats will be large hail and damaging winds. Very large hail will be possible in the western portions of the North/Central Plains. Gusty winds will continue producing critical fire weather threats across portions of the Desert Southwest.

Storms and Heavy Rain in the Plains; Critical Fire Weather Threats for Numerous Areas - Severe storms primarily with large hail and gusty winds, and locally heavy rain can be expected in the South and Central Plains. Gusty winds and dry conditions will keep fire weather threats critical in the Southwest, portions of Maine, and in the Yukon Flats of interior Alaska.