The heat and humidity are turned up early this week and one record temperature in Baltimore has already been tied with another broken. The Monday high at BWI-Marshall reached 98° and on Tuesday it hit 97°.
The hottest temperatures will be early this week and the list below shows the records.
The Wednesday morning National Weather Service surface map for the eastern portion of the U.S. outlines a large area of high pressure over the east coast.
Unusually warm, humid air is bottled up under this ridge and the threat of more record temperatures will continue. A cold front to the west will eventually break the heat wave and the approaching front could trigger strong to severe storms.
The Northeast and Mid Atlantic regions have a slight risk for severe storms on Wednesday. The Storm Prediction Center has indicated that an enhanced risk for Severe Storms is likely over Central Maryland and Eastern Virginia Wednesday afternoon and evening.
The 1:30pm satellite image shows storm cells blossoming over Pennsylvania and that development should extend southward into Maryland, Virginia and West Virginia through the afternoon. There is a fairly high chance that some storm cells could produce damaging wind and hail.
Most of the southern and eastern U.S. will continue to experience the heat wave Wednesday. The map above shows the predicted high temperatures across the country. Note the the northwest will be rather cool. This has been the case much of this spring. That persistent pool of chilly air has been a major player in the severe weather that has plagued the central U.S. this spring.
Courtesy: National Weather Service
Again Wednesday a Heat Advisory is in effect over the central portion of Maryland as indicated by the orange shaded areas in the map above. The grey shaded areas indicate counties under an Air Quality alert. The Air Quality alert is also in effect for the Baltimore region and much of the area under the Heat Advisory.
Keep up with the latest on this heat wave and the potential for severe storms on wbaltv.com and check in with Tony and Tom for the latest forecasts on WBAL-TV 11.
(The Tuesday morning blog entry has been updated to include the latest information through Wednesday midday.)