Huge rain totals in Monday storm
A blog comment from "djordan" this afternoon called my attention to the rain that fell with thunderstorms across Central Maryland as the cold front swept through on Monday.
I was deep in an interview in East Baltimore as the thunder announced the storm, and it was over by the time I got out. So I missed it entirely. But djordan wrote to me:
"Frank, were any rainfall records set yesterday? I got caught in that never-ending thunderstorm in western Howard Co...I understand over 3 inches of rain fell in 1.5 hours or something like that."
So I checked CoCoRaHS Network data and found some impressive totals:
Eldersburg: 3.49 inches
Woodbine: 3.21 inches
North Laurel: 3.20 inches
Sykesville: 2.98 inches
Gaithersburg: 1.99 inches
Towson: 1.59 inches
Baltimore: 1.50 inches
Cockeysville: 1.22 inches
The Sun: 0.83 inch
I can't say whether any of these totals are records for the date in the places where they were measured, because the only official record-keeping in the area is the NWS station at BWI. The wettest July 25 on record there saw 2.00 inches fall in 1978. So if the storm had stalled a bit farther east, over BWI, we would have demolished the record for the date.
As it was, BWI reported just 0.64 inches, so, officially, there was no new record.