Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 335 AM EDT Wed Jun 25 2025 Valid 12Z Wed Jun 25 2025 - 12Z Fri Jun 27 2025 ...Extremely dangerous heat persists across the Midwest and East Coast... ...Excessive rainfall concerns for portions of the Southwest, Southern High Plains, Northern/Central Plains today... ...Severe thunderstorms and excessive rainfall potential across the Upper/Middle Mississippi Valley, Upper Great Lakes, and Southeast through Thursday Extreme heat warnings and/or heat advisories currently extend from the Lower Mississippi Valley and Midwest to much of the East Coast, affecting nearly 150 million people. The Ohio Valley will experience the longest stretch of extreme heat as it is likely to persist through Friday. Daily record high temperatures are expected from the Ohio Valley through much of the East Coast today after some locations set monthly June temperature records on Tuesday. In fact, Tuesday was New York City's hottest day since 2012. High temperatures are forecast to reach the upper 90s with overnight lows in the 70s. Urban areas along the East Coast will struggle to drop below 80 degrees at night. The most significant cumulative heat impacts are anticipated across the Mid-Atlantic through Thursday. This is after several consecutive days of oppressive heat, which should exacerbate heat related health impacts. This level of heat is dangerous to anyone without effective cooling and/or adequate hydration. Heat related illnesses increase significantly during extreme longer duration heat. Take action when you see symptoms of heat exhaustion and heat stroke. An upper trough in the West will eject shortwave energy out into the Central U.S. over the next couple of days. This energy will likely interact with moisture and surface fronts to produce scattered thunderstorms from the Southwest to the Upper Great Lakes. Early morning convection today followed by early evening storms over much of New Mexico and west Texas may lead to flash flooding for those areas. The Ruidoso burn scar is especially susceptible to flash flooding from today's heavy rainfall. A slight risk (at least 15%) of excessive rainfall is in effect today, followed by a marginal risk (at least 5%) on Thursday due to lingering showers. A stationary front draped from the Northern/Central Plains to the Northeast will be the focus for additional storms (some severe) over the next few days. The storm prediction center issued a slight risk (level 2/5) for portions of central Nebraska through to northern Iowa/southern Minnesota today with a marginal threat on Thursday. Damaging wind gusts and large hail will be the main threats from storms that materialize. An upper-level disturbance will bring scattered to isolated thunderstorms and a marginal risk for excessive rainfall to the Southeast over the next couple of days. SPC issued a slight risk of severe thunderstorms for these areas with a threat of severe wind gusts. Kebede Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php