A warm front pushed through Maryland on the 23rd. A southeast flow ahead of the front ushered in plenty of moisture from the Atlantic Ocean.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LWX wrote it up.
A warm front pushed through Maryland on the 23rd. A southeast flow ahead of the front ushered in plenty of moisture from the Atlantic Ocean. The moisture combined with the warm front triggered showers and thunderstorms. An isolated thunderstorm did become severe.
The Sterling radar (KLWX), 32 km away, was scanning. The volume nearest the first event began at 18:31 UTC.
1 lightning, 1 hail. Local standard time, as filed.
A man was injured due to a lightning strike close by at the Congressional Golf Course in Bethesda.
Quarter size hail was reported near Aspen Hill.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2009Every state in 2009This day in weather historyWarnings in Maryland, July 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 189036, 189006.