Southern Florida: Expect ongoing thunderstorm activity continuing through Friday due to a stationary surface front and upper trough axis. Heavy rainfall, potentially several inches, poses a high risk (at least 70%) of flash flooding along the I-75 corridor from Naples to Miami. Central-southern Florida faces a slight risk (at least 15%) through Friday, with conditions improving by Saturday.
High Plains: A closed mid-level low will transition into an open shortwave trough, triggering thunderstorms across the High Plains from Friday afternoon into the evening. The Storm Prediction Center has issued a slight risk (level 2/5) of severe thunderstorms for parts of eastern Colorado, southwestern Nebraska, and eastern Kansas, with potential for large hail and severe wind gusts.
Northeast/Mid-Atlantic: A complex of storms is expected to develop over western Pennsylvania Friday afternoon, moving into the Northeast/Mid-Atlantic Coast in the evening.
Midwest: Convection along a cold front pushing through the Midwest tonight could lead to enhanced rainfall rates. There’s a slight risk (at least 15%) of excessive rainfall and flash flooding for portions of southeastern Iowa, northeastern Missouri, north-central Illinois, and northwestern Indiana. Rainfall totals of around an inch are expected, with isolated amounts up to two inches possible.
Excessive Heat: Excessive heat warnings, watches, and advisories are in effect over Southern California, Southwest, Central Plains, and Southern High Plains. However, these concerns will diminish in the Southwest as a mid-level disturbance moves into the Plains, where an upper ridge will increase heat threats across the eastern half of the country next week.
