


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
358 FXUS01 KWBC 071857 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 256 PM EDT Sat Jun 07 2025 Valid 00Z Sun Jun 08 2025 - 00Z Tue Jun 10 2025 ...Active severe weather setup from the southern Plains to the Southeast this weekend and into Monday... ...Heavy showers & thunderstorms to pose both a flash flooding and severe weather threat in parts of the Midwest and Mid-Atlantic... ...Stifling heat dome to build in throughout much of the West and the western Gulf Coast; hottest temperatures compared to normal centered in the Northwest... A series of frontal systems will be responsible for a wet and stormy weekend and upcoming Monday across the southern and eastern U.S.. Focusing on the Southern Tier of the Lower 48 to start, a hot and steamy air-mass is in place ahead of a frontal boundary that stretches from the southern High Plains to as far east as the Northeast coast. Severe storms are anticipated this afternoon and into tonight from the Texas/Oklahoma Panhandles to the southern Mid-Atlantic. The Storm Prediction Center (SPC) is most concerned with severe weather potential in the Mid-South where an Enhanced Risk (threat level 3/5) is present over northern Mississippi, northern Alabama, northern Georgia, and southern Tennessee. Damaging winds are the greatest concern there, while the rest of the previously mentioned regions of the South could see any combination of damaging winds, large hail, or tornadoes. In addition to the severe weather, flash flooding is also of concern from the ArkLaTex on east across the Mid-South where WPC has a Slight Risk (threat level 2/4) through tonight. Sunday`s severe weather potential is even greater with SPC placing a Moderate Risk (threat level 4/5) along the Red River Valley of southern Oklahoma and northern Texas. Powerful storms capable of generating exceptional wind gusts and significant hail are possible in the Southern Plains, as well as Excessive Rainfall, which has prompted WPC to issue a Slight Risk from the Texas Panhandle on east along the Red River and into the ArkLaTex region. A Slight Risk (threat level 2/5) for severe weather is also present in portions of the Middle Mississippi Valley. By Monday, the cold front starts to move a little farther south and east, but it is still likely to trigger additional severe storms throughout the South. SPC does have a sizable Slight Risk (threat level 2/5) from the Lower Mississippi Valley to the South Carolina/Georgia coast. Farther north, another frontal system is the culprit in igniting numerous showers and severe storms across the Upper Midwest and Northeast today. SPC does have a Marginal Risk (threat level 1/5) in the Northern Plains as a cold front approaches from southern Canada. Meanwhile, the Northeast and Ohio Valley feature saturated soils and training showers and storms; an ideal recipe for flash flooding this evening and into tonight. WPC has a pair of Slight Risks in these regions through early Sunday morning. The Excessive Rainfall threat persists in the Upper Ohio Valley and Mid-Atlantic on Sunday as a stalled frontal boundary and no shortage of atmospheric moisture support additional areas of flash flooding. A Slight Risk is being introduced for these regions for Sunday, including the DC/Baltimore metro areas. Monday features an expansive Marginal Risk area for Excessive Rainfall that stretches from the Tennessee Valley on north through the northern Mid-Atlantic. Areas most prone to flash flooding on Monday will likely be portions of the Upper Ohio Valley, Central Appalachians, and northern Mid-Atlantic where soils will only continue to grow more and more saturated following the stormy weather over the weekend. While the South and East are mired in an active weather pattern, the West will be mostly dry this weekend and into Monday. The lone exceptions are the elevated regions of the Intermountain West which include mountain ranges such as the Sierra Nevada, the Great Basin, the Wasatch, the Mogollon Rim, and as far east as the Colorado/New Mexico Rockies. These areas can see diurnally-driven showers and thunderstorms each afternoon and evening. The Desert Southwest and Pacific Northwest will not only be dry, but grow increasingly hot each day into early next week. The hottest temperatures compared to normal will be found in the Northwest with daily record high temps both Sunday and Monday. By Monday, daytime highs in parts of Oregon and Washington will make a run at the century mark. There are Heat Advisories and Excessive Heat Watches that remain in effect for the Pacific Northwest both Sunday and Monday to highlight the stifling heat that HeatRisk suggests will sport Moderate to Major Risks for heat-related impacts. Please visit www.wpc.ncep.noaa.gov/heatrisk/ for more information on HeatRisk. Similar Moderate-to-Major HeatRisk potential exists in the Great Valley of California, the Great Basin, the Mojave Desert, and into the Lower Colorado River Basin both Sunday and Monday. High temperatures are forecast to easily reach the 90s and even the 100s (particularly the Mojave and Lower Colorado Basin) each day. Note that searing heat is also on tap from South Texas on east through southern Louisiana. Spotty Heat Advisories are in effect over West Texas while HeatRisk depicts widespread Major Impacts (heat that effects anyone without effective cooling/hydration) from the Rio Grande Valley on east through the Houston metropolitan area and into southern Louisiana through Monday. Mullinax Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$