Montgomery County Under Flash Flood Warning

A Flash Flood Warning was issued for Montgomery County, Pennsylvania, after Doppler radar indicated heavy rainfall from thunderstorms. Though the intense rain has ceased, lingering water requires time for drainage. Earlier in the day, emergency services performed water assists and rescues in Lower Merion.

Meteorologists issued warnings for severe thunderstorms, citing potential for 60 mph wind gusts and hail up to 1 inch in diameter. The National Weather Service advised residents to move to an interior room on the lowest floor of a building for protection against the storm's hazards, which included frequent lightning.

During a severe thunderstorm warning issued on 2026-07-12, a storm located near Narberth was moving southeast. This storm brought the threat of 60 mph winds and quarter-sized hail, potentially causing minor damage to vehicles and significant damage to roofs, trees, and power lines. This severe weather impacted Philadelphia, Camden, and surrounding areas, affecting major highways.

The National Weather Service defines a Severe Thunderstorm Warning for storms producing winds of 58 mph or higher or hail of one inch or larger. Such storms can also bring heavy rain and lead to flash flooding. Safety advice includes seeking indoor shelter immediately upon hearing thunder, as lightning can strike miles away.