850 FXUS01 KWBC 011955 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 354 PM EDT Wed Jul 01 2026 Valid 00Z Thu Jul 02 2026 - 00Z Sat Jul 04 2026 ...Prolonged and dangerous heat wave ramps up across the central and eastern U.S. through the end of the week... ...Severe weather and heavy rain threats continue across the Plains, Upper Midwest, Southeast, and Northeast the next few days... ...Critical fire weather conditions continue over parts of the Four Corners through Friday... A strengthening upper-level ridge over the central and eastern U.S. will result in a prolonged and dangerous heatwave through the end of the week and into the Independence Day weekend. Many areas across the Ohio Valley, Mid-Atlantic, and Northeast are set to break records Thursday and Friday as high temperatures soar to between 95 and 105 degrees. When combined with dewpoints well into the 70s, peak heat indices of 100 to 115 degrees are expected. These extreme daytime temperatures in conjunction with nighttime lows only dropping into the 70s to near 80 will cause widespread areas of Major to Extreme HeatRisk from the Midwest to the East Coast. This will pose a risk for heat-related illnesses, especially for vulnerable populations and those without adequate cooling. Meanwhile, an upper-level trough remains anchored across the western U.S., keeping temperatures well below average through Friday. This trough will also eject a series of disturbances into the northern Plains, where they will interact with a nearly stationary boundary draped across the Upper Midwest into the Great Lakes. These features will be the focus for multiple rounds of showers and thunderstorms the next few days, with plenty of instability and moisture fueling threats for heavy rainfall and severe weather. Some of this activity will also likely track into parts of the Northeast as complexes of thunderstorms move east-southeast along the outer fringes of the strong upper level ridge centered over the Ohio Valley and southern Mid-Atlantic. Damaging winds, large hail, and isolated to scattered flash flooding would be the greatest concerns from any clusters of strong to severe thunderstorms. Farther south, daily rounds of showers and thunderstorms will continue across the Gulf Coast, Southeast, and Florida as deep tropical moisture remains in place. Slow-moving storms will be capable of producing high rainfall rates, which can lead to isolated flash flooding. Some storms may even become severe, producing localized hail and damaging wind risks. Out West, critical fire weather conditions are expected to continue for a few more days over parts of the Four Corners as strong terrain-driven winds combine with dry air and exceptionally dry fuels. These conditions will support the longevity of several ongoing large fires across the region, many of which will be capable of aggressive and extreme fire behavior. The strongest winds will subside shortly after sunset each day, but poor humidity recovery will likely sustain active fire activity through the night. Miller Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$