Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
649 ACUS03 KWNS 250653 SWODY3 SPC AC 250653 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0153 AM CDT Wed Sep 25 2024 Valid 271200Z - 281200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF NORTH CAROLINA INTO SOUTHERN VIRGINIA... ...SUMMARY... A risk for a couple of tornadoes and damaging thunderstorm wind gusts exists across parts of North Carolina into southern Virginia on Friday. ...NC/VA... Strong low to midlevel southeasterly flow fields associated with the remnants of Tropical Cyclone Helene will persist through Friday afternoon across the southern Mid-Atlantic vicinity. Onshore low-level flow will maintain a high theta-e airmass, with surface dewpoints in the mid 70s F expected. Forecast soundings across the area show favorable low-level hodographs supporting rotation within cells in northwest moving convective bands. While lapse rates will remain poor, rich boundary-layer moisture should provide enough low-level instability to support occasional strong gusts and a couple of tornadoes through late afternoon/early evening. The northward extent of severe potential will be limited by weakening deep-layer flow beyond the 21-00z time frame and a cold front sagging southeast across VA. ..Leitman.. 09/25/2024 $$