635 FXUS61 KRNK 291027 AFDRNK Area Forecast Discussion National Weather Service Blacksburg VA 627 AM EDT Mon Jun 29 2026 .WHAT HAS CHANGED... The entire forecast has been updated. && .KEY MESSAGES... 1) Isolated showers and thunderstorms should develop along the Blue Ridge this afternoon. 2) Hot and humid conditions will occur after Tuesday, but storm chances may return by the upcoming weekend. && .DISCUSSION... KEY MESSAGE 1...Isolated showers and thunderstorms should develop along the Blue Ridge this afternoon. While a cold front heads offshore today, moisture convergence and instability should spark isolated showers and thunderstorms along the Blue Ridge. However, the convection may not occur until after midday as some areas of fog will develop early this morning and will need to burn off before sufficient daytime heating can be obtained. Aside from a passing weak shortwave trough aloft to the north, not much upper level forcing is available. Thus, any storms this afternoon do not appear to become too strong, so gusty winds and heavy downpours should be the only concerns. Any convection should wane after sunset, and coverage of storms should lessen by Tuesday as an upper level ridge approaches. KEY MESSAGE 2...Hot and humid conditions will occur after Tuesday, but storm chances may return by the upcoming weekend. A broad upper level ridge will build northeastward towards the Appalachian Mountains during Tuesday and Wednesday. This ridge should become centered overhead by Thursday and Friday. While chances of showers and thunderstorms should stay limited due to capping aloft, the bigger impact will be the increasing heat and humidity. Temperatures should jump notably after Tuesday with highs in the 90s for most locations and even a few lower 100s east of the Blue Ridge for the remainder of this week. Heat indices could reach up to 105 degrees across the Piedmont. Upper level troughing across southeastern Canada by the upcoming weekend could cause the ridge to slowly weaken and allow increasing chances of showers and thunderstorms. However, this Independence Day weekend should still remain hot and humid. Make sure to have plenty of water and sunscreen, and check your air conditioners to ensure that they are working properly. && .AVIATION /12Z MONDAY THROUGH FRIDAY/... LIFR CIGs and VSBYs are impacting most terminals this morning. These restrictions are expected to linger through at least 12 UTC at most terminals as a frontal boundary remains stalled across the region. These restrictions may erode slower than is typical this time of year, with VFR conditions not expected to return until 18 UTC today for some terminals as a broken deck of MVFR to IFR CIGs are expected to hang around due to this backdoor frontal boundary. Winds look to be light and variable or calm through the night, and stay that way, or trend light east/southeast, through the day and night today. Isolated showers look possible along the Blue Ridge this afternoon and evening; however, probabilities are not high enough to include at any terminals at this time. MVFR to LIFR restrictions look possible again Tuesday morning; however, coverage and intensity of fog and low cloud development is still uncertain at this time. Given model agreement, have opted to include MVFR to IFR restrictions at most terminals for Tonight into Tuesday morning. EXTENDED AVIATION OUTLOOK... Cannot rule out some isolated showers/storms the rest of the week, but the upcoming week will feature high pressure and mainly VFR conditions, outside any late night fog. && .RNK WATCHES/WARNINGS/ADVISORIES... VA...None. NC...None. WV...None. && $$ DISCUSSION...PW AVIATION...EB