Weather Alert Summary for Thursday and Friday:
Severe Thunderstorms:
- Southern Mid-Atlantic: Slight Risk (level 2/5) of severe thunderstorms. Hazards include frequent lightning, severe wind gusts, hail, and a minimal tornado threat.
Excessive Rainfall:
- Southern Mid-Atlantic: Slight Risk (level 2/4) of excessive rainfall, potentially causing localized flash flooding in urban areas, roads, small streams, and low-lying areas.
- Southern Plains/Lower Mississippi Valley: Slight Risk (level 2/4) of excessive rainfall, with similar flash flood risks.
- Southern High Plains/Southern Rockies: Slight Risk (level 2/4) of excessive rainfall, affecting urban areas, roads, small streams, low-lying areas, and burn scars.
Heat Warnings and Advisories:
- Pacific Northwest to California and Southwest: Excessive Heat Warnings/Watches and Heat Advisories due to high temperatures in the 90s to 100s, with little overnight relief.
Detailed Forecast:
Thursday:
- Front Movement: A front extending from Northern New England to the Mid-Atlantic, then southwest to the Central Gulf Coast and western Texas, will move off the Northeast and Mid-Atlantic Coast by Friday.
- Southern Boundary: The boundary will linger near the Southeast and across the Gulf Coast States, producing showers and severe thunderstorms in the southern Mid-Atlantic.
Friday:
- Southern Mid-Atlantic: Continued slight risk of severe thunderstorms and excessive rainfall.
- Central Gulf Coast to Southeast: Showers and thunderstorms, with heavy rain risks.
- Southern Rockies/Southern High Plains: Showers and thunderstorms with heavy rain, continuing the slight risk of excessive rainfall.
Additional Areas:
- Great Basin and Southwest: Showers and thunderstorms in the late afternoon and evening due to moisture and daytime heating.
- Northern/Central Rockies and Plains: Scattered showers and thunderstorms, with a marginal risk of severe thunderstorms and excessive rainfall.
Summary:
Expect severe thunderstorms and heavy rainfall risks mainly in the southern Mid-Atlantic, Southern Plains, Lower Mississippi Valley, and Southern Rockies. The Pacific Northwest to California and the Southwest will experience significant heat, posing health risks. Stay alert for flash flooding and heat advisories in the affected regions.
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