As a cold front heads toward the warm, moist air that has kept things mild the past couple of days, some rumbles of thunder are possible Monday night. The system has already spawned tornado reports and severe weather to our southwest.
The northern half of Maryland, above Annapolis or so, stands a slight risk of severe weather, according to the Storm Prediction Center. Odds are extremely narrow of any actual storms, but the instability expected when the cold front moves in could cause some thunder and lightning.
The chances for severe weather stretches across an area from the Gulf coast and across Florida up the Appalachians into the mid-Atlantic and coastal New England. A tornado watch is in effect for a band of storms moving across southern Alabama and Mississippi.
Rain is in the local forecast for the Baltimore area through the evening. BWI Marshall Airport reached 57 degrees by noon, with much colder temperatures on the other side of an oncoming cold front, at 41 in Cincinnati, 39 in Toledo and 43 in Louisville.
Severe storms -- as opposed to winter storms -- are of course unusual this time of year. It has been since Sept. 8 that thunder was reported at BWI Marshall Airport, according to the National Weather Service.
Last winter, one of the mildest on record, there were a handful of thunder-producing storms at BWI.