Unseasonably warm conditions will continue around Washington, D.C. through the weekend, ahead of possible drenching rain from Karen.
High temperatures well in the 80s to near 90 degrees and generally rain-free weather will continue around the region through the day Sunday.
However, two weather systems have a chance at bringing a dose of heavy rain from Monday afternoon into early Tuesday.
A front from the Plains is forecast to sweep off the East coast later Tuesday. Ahead of the front, showers and thunderstorms are in store with a southerly flow of moisture during early next week.
Surviving within that flow may be Karen as a tropical rainstorm.
If Karen's rain does make the trip this far north, it would raise the possibility of flash and urban flooding, as well as travel delays, most likely Monday afternoon and evening.
Most areas need rain and could easily handle a couple of inches over a 6- to 12-hour stretch with few problems as the last thorough soaking was Sept. 21. There is a chance of heavier rainfall if Karen gets totally involved.
Southerly winds ahead of and during the rain may be rather strong and gusty Monday. The wind could push waters to a foot or two above published levels on the Chesapeake Bay and the Lower Potomac River.
Some areas near and just east of the track of the center of circulation of Karen could be hit with a severe thunderstorm Monday as well.
The air behind the front and/or Karen next week will be cooler than this week, but not abnormally so. Temperatures will still average near to above normal for the rest of next week.
Thunderstorms and soaking rain will threaten Memorial Day ceremonies, cookouts and vacations for millions on Monday.
Potent thunderstorms will target part of the Plains during a time when many will be outdoors celebrating Memorial Day.
Memorial Day marks the unofficial start to summer, and elevated temperatures will waste no time in surging back into the northwestern United States this week.
Despite no longer being a tropical storm, Bonnie will continue to spread downpours across the Eastern Seaboard of the United States into Memorial Day.
Rainy weather will help to lessen the severity of the drought around Colombia and Venezuela in the coming months while drier-than-normal conditions make matters worse for the drought in Chile and northeastern Brazil.
Rain will hold off moving into South East England on Monday’s bank holiday, allowing for dry weather to prevail across the United Kingdom.
Yuma, AZ (1877)
Severe two-day sandstorm.
Area from Wallace to Kearney counties: a great hailstorm caused $6 million damage.
Ohio Valley (1982)
Severe thunderstorms: Tornado in Marion, IL killed 12, caused $100 million damage. Columbus, OH had a wind gust to 76 mph. Louisville, KY pelted by hail 2" in diameter.