Showers and cold air slow to depart
Overnight rain dropped more than a half-inch on The Sun's weather station at Calvert and Centre streets, with the highest rain rates around 6 a.m. The rest has been dribs and drabs, but it adds up.
Other spots have seen more, especially south of Baltimore. Anne Arundel County had some serious storms, with at least five schools closed this morning due to power outages. Here's more from the CoCoRaHS Network:
South Gate, Anne Arundel: 1.18 inches
White Marsh, Baltimore Co.: 0.78 inch
Severna Park, Anne Arundel: 0.75 inch
Herald Harbor, Anne Arundel: 0.70 inch
Cockeysville, Baltimore Co.: 0.65 inch
BWI-Marshall Airport: 0.62 inch
Bel Air, Harford: 0.55 inch
Taneytown, Carroll: 0.42 inch
The clouds, cold air and drizzle will be slow to depart the region, forecasters say. Today's showers should dissipate by 2 p.m. or so, although there will be some lingering risk until sunset. Temperatures will struggle to reach 60 degrees. We haven't quite reached 50 here at The Sun, at noon. The average high for this time of year at BWI is 70 degrees.
The cold front that crossed the region overnight has moved off the coast, but the trailing rain is taking its time. As skies finally begin to clear late tonight, radiation cooling will drop the overnight lows deep into the 40s. Western counties could see the 30s, and the weather service has issued frost and freeze watches for portions of western Virginia and West Virginia. "This could potentially damage spring crops sensitive to a freeze," forecasters warned.
Northwest winds Thursday will bring drier conditions, and sunshine will push daytime highs into the upper 60s - still cool for the season. Low pressure off the coast of Maine (see map; click to enlarge), and high pressure in the Ohio Valley will combine to make Thursday a windy one. Showers and thunderstorms become a factor again Friday and Friday night as new disturbances move by.
For the weekend, Saturday is your best bet for outdoor activities, with mostly sunny skies predicted, and a high near 70. Showers return on Sunday.