Baltimore, Washington, York, and Harrisburg Face Strong to Severe Storm Clusters Sunday Evening Between 6 PM and 9 PM With Damaging Wind and Hail Possible
BALTIMORE, MARYLAND — A line of storms is forecast to form after 4:00 PM on Sunday, May 10, 2026, with the primary threat window running from 6:00 PM to 9:00 PM as clusters of strong cells push through the Baltimore, Washington, York, and Harrisburg corridor. Storms could reach severe limits with damaging wind and hail before the evening ends. The morning and afternoon hours offer sun and warm temperatures before the evening storm threat arrives.
How the Evening Unfolds Sunday
4:00 PM: Storm Line Forms The HRRR model shows a line of storms beginning to form west of Baltimore by 4:00 PM, with initial activity pushing toward the metro from the west.
6:00 PM to 9:00 PM: Peak Threat Window The most active period arrives during the 6:00 to 9:00 PM window as clusters of strong cells organize and push through the region. This is the timeframe when storms are most capable of reaching severe limits with damaging wind and hail.
What the HRRR Shows at 7:00 PM Sunday
The HRRR forecast valid 7:00 PM Sunday May 10 shows an organized and intense cluster of storm activity pushing directly through the Baltimore metro, with the highest reflectivity values concentrated across:
- York and Hanover, Pennsylvania
- Westminster and Frederick, Maryland
- Baltimore, Maryland
- Harrisburg, Pennsylvania
- Bel Air, Maryland
- Gaithersburg, Maryland
- Washington DC corridor
- Annapolis, Maryland
The storm line is moving eastward through the entire I-95 corridor from Washington northward through Baltimore and into southern Pennsylvania during the peak threat window.
Hazards Expected Sunday Evening
| Threat | Status |
|---|---|
| Damaging Winds | Possible with stronger cells |
| Hail | Possible with stronger cells |
Enjoy the Day, But Prepare for the Evening
Sunday will offer sun and warm temperatures through the morning and early afternoon hours across the Baltimore and Washington metro areas. Residents should enjoy the pleasant conditions but have a plan in place before 4:00 PM when the storm line is expected to begin forming to the west.
Anyone with Mother’s Day evening outdoor plans across Baltimore, Washington, York, Harrisburg, Westminster, and Frederick should move activities indoors or wrap up before the 6:00 PM threat window opens.
Stay with CabarrusWeekly.com for continuing updates on Sunday evening’s storm threat across Baltimore, Washington, and the surrounding Mid-Atlantic region.
