A frost advisory affects some counties in eastern West Virginia, with Giles, Craig and Alleghany counties in Virginia noted for possible patchy frost. Most lows will range from upper 30s to mid 40son Sunday morning in Southwest Virginia (UPDATE 7:40 AM, 5/26: It didn’t get this low because of clouds from upper-level impulse. END UPDATE). Lynchburg set a record low of 36 on Saturday morning. Breeziness kept the lows in the 40s at Roanoke and Blacksburg. We’ll rebound into the upper 60s to mid 70s on Sunday with lots of sunshine.
This European model projection of 500-millibar heights for Friday tells the story of the week ahead. The red colors building in over much of the East into the Ohio and Tennessee valleys is high pressure that will bring summerlike warmth and mostly dry weather to Southwest Virginia by the middle to latter part of the coming week. I think Roanoke and points south and east will end up with more than one day in the low to maybe mid 90s when this sets in. The green in the Northern Rockies and Northern Plains marks low pressure that will bring unseasonable cold and precipitation to that region. In between the two, there will be a war between the high and low in the central U.S. That will lead to a volatile week of storms in that region — and that’s where I’ll be headed with the Hokie Storm Chasers beginning Monday morning.
The first push of warmer air northward may trigger a few showers and storms on Memorial Day … and, ironically, it’s possible some easterly winds ahead of the warm front may keep things a little cloudier and cooler that day. Optimistically, with sun breaking through, there will be 70s that afternoon, but don’t be too surprised if it’s a bit cooler