928 FXUS01 KWBC 041958 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 357 PM EDT Sat Jul 04 2026 Valid 00Z Sun Jul 05 2026 - 00Z Tue Jul 07 2026 ...Dangerous Heat Persists Across Parts of the East Through the Holiday Weekend... ...Cold Front Brings Increasing Severe Thunderstorm and Heavy Rain Threat to the Mid-Atlantic... ...Strong to Severe Thunderstorms Continue into this Evening from the Ohio Valley into the central and southern Plains... A prolonged and dangerous heat wave will remain the primary weather story across much of the eastern U.S. through the remainder of the Independence Day weekend, with widespread high temperatures in the mid 90s to around 105 degrees and peak heat indices of 100-115 degrees. However, the most intense heat will gradually shift southward from the Ohio Valley and Northeast into the southern Mid-Atlantic and Southeast late this weekend into early next week as a cold front settles southward, bringing more seasonable temperatures to the northern tier of the East. Widespread Major to Extreme HeatRisk will persist through the weekend before gradually diminishing from north to south, while dangerous overnight warmth and high humidity continue to exacerbate heat-related impacts. In addition to bringing cooler temperatures, the front settling southward from the Northeast into the Mid-Atlantic will become a focus for showers and thunderstorms. Some thunderstorms may become strong to severe, with damaging wind gusts possible this evening and again Sunday across portions of the Mid-Atlantic. In addition to the wind threat, thunderstorms will also be capable of producing heavy rainfall, with an increasing threat of repeating storms and flooding as the front slows and stalls across the region later this weekend into early next week. Farther west, thunderstorms will continue to develop this evening from the Ohio Valley westward into the central and southern Plains. Some storms may produce severe wind gusts and large hail. By Sunday, the greatest coverage of thunderstorms is expected to shift farther south into the Tennessee Valley, lower Mississippi Valley, and southern Plains, with locally heavy rainfall also possible. Across the West, a cold front will move through the northern Rockies into the northern Plains. Thunderstorms developing along the front may produce strong wind gusts and isolated large hail as they move across Montana and North Dakota on Sunday. Pereira Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$