


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
676 FXUS01 KWBC 042059 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 458 PM EDT Fri Jul 04 2025 Valid 00Z Sat Jul 05 2025 - 00Z Mon Jul 07 2025 ...Strong to severe thunderstorms will be possible over the holiday weekend from the Southern Plains to the High Plains; more flooding remains possible over saturated west-central Texas... ...Threat of heavy rain increasing for coastal Carolinas due to T.D. Three located off the southeast U.S. coast... ...Heat and humidity will be migrating eastwards across the Great Lakes region towards the East Coast through the Holiday weekend, with notable population centers entering the Major Heat Risk category... On this 4th of July and into the holiday weekend, stormy weather will likely be found across the northern Rockies, High Plains, and into the upper Midwest ahead of a lifting warm front, followed by a cold front marching through the region. For tomorrow, the Storm Prediction Center has a tarted Slight Risk from Montana and Wyoming eastward to the High Plains. The main threats will be damaging winds and large hail. Additional thunderstorms across the Plains on Sunday may also produce hail with steep lapse rates noted by the Storm Prediction Center. In terms of flooding and heavy rain, west-central Texas will have the biggest threat for impacts from flash flooding. A MCS, associated with the remnants of Barry, across parts of Texas has dropped several inches of rainfall across the region from Thursday night and this afternoon. Saturated soils and river flooding make this area sensitive to more rainfall. The forecast calls for locally heavy rainfall to persist into tomorrow as anomalous moisture and mid-level energy provide a conducive atmosphere for possible continued flooding. Therefore, WPC has issued a Slight Risk for Excessive Rainfall across the area on Saturday. Other areas of heavy rain for Saturday will again focus on Florida and the Carolina coastline as high moisture content in the atmosphere from a tropical low being monitored by the Hurricane Center will support heavy rainfall rates within rain bands and diurnal thunderstorms. The threat for heavy rain will continue for the Carolinas on Sunday with the tropical low. Additionally, clusters of storms that form ahead of a cold front in the High Plains and Upper Midwest on Saturday and across the Central Plains and Mississippi Valley on Sunday will also be be capable of producing heavy rainfall and potential flash flooding. Near the coast of the southeastern U.S., T.D. Three has formed along a surface trough. In general, locally heavy rainfall and squally weather will be the main weather hazards across the Southeast coastline. See the latest forecast from the National Hurricane Center for more information. Temperatures will be on the rise from the Great Lakes to the East Coast as mid-level ridging shifts across the region. This weekend will see cities such as Chicago, Detroit, Indianapolis, and Boston entering the Major Heat Risk category. High temperatures in the low to middle 90s may produce dangerous heat impacts. Stay hydrated and take cool breaks.The West will generally be cooler than average, at least relative to July standards, as a trough and surface front are located over the region. Kong/Wilder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$