Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 335 AM EDT Thu Jul 11 2024 Valid 12Z Thu Jul 11 2024 - 12Z Sat Jul 13 2024 ...Stalled surface front to cause scattered Flash Flooding across portions of the Mid-Atlantic through Friday... ...Dangerous heat and record high temperatures to continue for much of the West through the end of the work week... A cold front associated with once Beryl will stall out along the East Coast today and be a focus for thunderstorm activity across the Mid-Atlantic through the end of the work week. At least a few inches of rainfall are forecast to impact areas from coastal South Carolina to southern New Jersey, including much of the eastern Mid-Atlantic. A Slight Risk (at least 15%) of Excessive Rainfall has been issued for the Virginia Tidewater down across the North Carolina coast today and then the broader Mid-Atlantic coastal region on Friday. Not only will this frontal boundary increase rainfall chances, but dangerous heat experienced across the East will greatly abate for the end of the week. Extreme and record-breaking heat will continue throughout much of the West, with the focus beginning to shift out of the Pacific Northwest and towards the High Plains, while remaining in the Southwest. Highs are forecast to soar into the upper 90s and triple digits for these locations, with 110s and 120s possible in the typically hot desert/interior valley locations of California, Arizona, and Nevada. Dozens of daily high temperature records are forecast today and Friday from the West Coast to the High Plains. Excessive Heat Warnings and Heat Advisories remain in effect for much of the western United States in order to further highlight the dangerously hot temperatures. This level of heat for many people will create an extreme risk of heat-related illnesses when access to adequate cooling or hydration is not available. Be sure to follow proper heat safety, which includes staying hydrated, wear light clothing, avoid outdoor activity, and using air conditioning. Elsewhere, the combination of power outages from Hurricane Beryl and heat indices up to 106 degrees prompted Heat Advisories to be issued across parts of southeast Texas. The Storm Prediction Center issued a Slight Risk (level 2/5) for Severe Thunderstorms over portions of southeast Arizona/the greater Tucson area today between 3-8pm MST. The main concern will be severe wind gusts from thunderstorms that form in the north near the Mogollon Rim and work their way south throughout the afternoon. A series of dry microbursts and MCSs are possible. For the southern Rockies, locally heavy rain overlapping with sensitive burn scars could create chances for additional rounds of flash flooding today. Flood Watches are in effect. Kebede/Snell Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php