Not surprising that we have so many locations hitting 100 degrees. The latest SPC mesoanalysis has 850 temps of +22C and warming. Might explain the lack of a cu field.
Per NWS:
Baltimore (BWI) has tied its longest streak of days with temps of 101F+ at three (3) days -- previous occurrences 8/26-28/1948 & 7/19-21/1930
Washington DC (DCA) has tied its longest streak of days with temps of 101F+ at three (3) days -- previous occurrences 7/19-21/1930
One more degree and the Baltimore City mesonet site becomes the first site to hit 100 in the (short) history of the network.
https://www.weather.gov/wrh/timeseries?site=008MD&hours=72