As another warm and humid July day comes to an end, Maryland residents should keep an eye on the sky. Showers and thunderstorms are expected to become more widespread this afternoon and evening as a slow-moving front interacts with very moist air across the region. The National Weather Service indicates that some storms could become strong while also producing torrential downpours capable of localized flash flooding. (National Weather Service)
Straight to the Point
- ⛈️ Scattered to numerous thunderstorms develop this afternoon and evening.
- 💨 A few storms may produce damaging wind gusts.
- 🌧️ Heavy rainfall could lead to localized flooding, especially in low-lying and poor-drainage areas.
- ⚡ Frequent lightning will accompany stronger storms.
- 🌡️ Warm and humid conditions continue ahead of the storms.
Timing
Western Maryland: Storms may begin developing during the mid to late afternoon before moving east.
Central Maryland (Baltimore Metro, Frederick, Carroll, Howard, Harford, Anne Arundel): The greatest chance for storms will be from approximately 4 PM through 10 PM.
Eastern Shore and Southern Maryland: Storms are expected to arrive later in the afternoon and evening, with activity gradually diminishing overnight. (National Weather Service)
Main Hazards
The primary concern will be pockets of heavy rain that could quickly overwhelm storm drains and create isolated flash flooding. While not every storm will become severe, a few may produce wind gusts capable of downing small tree limbs or causing isolated power outages. Frequent cloud-to-ground lightning will make outdoor activities dangerous whenever storms approach. Hail cannot be ruled out in the strongest cells, though it is expected to remain a secondary threat. (National Weather Service)
Regional Breakdown
Western Maryland: Storm coverage will be scattered, but any storm that develops may become briefly strong with heavy rain.
Baltimore-Washington Corridor: This area has one of the better chances of seeing multiple rounds of showers and thunderstorms this evening. Localized flooding will be the primary concern where storms repeatedly track over the same locations.
Southern Maryland: Storms should become more numerous during the evening, bringing periods of heavy rain and lightning.
Eastern Shore: Storms may hold off until later in the day before moving through during the evening hours with gusty winds and heavy rainfall possible.
Stay Weather Aware
If you hear thunder, move indoors immediately. Never drive through flooded roadways, as water depth can be deceptive. Have multiple ways to receive weather warnings this evening, especially if you’ll be outdoors or traveling after work.
MD Weather Alerts will continue monitoring radar, official National Weather Service updates, and any watches or warnings that may be issued throughout the evening. If conditions change, we’ll have updates as quickly as possible. 🌩️
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