Back to today’s briefing

Story perspectives

Philadelphia Braces for Severe Weather and Flooding Risks

9/25/2025

23 4 Full Breakdown

Summary

Story summary

Philadelphia faces severe weather Thursday, September 25, with heavy rain, damaging winds, and 3 p.m.–10 p.m. thunderstorms.
Rainfall is expected 0.5 to 3 inches, with urban flash flooding possible.
A cold front keeps unsettled conditions into Friday, with scattered showers and storms.
Tropical Storm Humberto formed and may strengthen, but is not expected to make U.S. landfall.

History

Historical Context

The Great Blizzard of 1888 devastated the northeastern United States, causing over 400 fatalities and paralyzing transportation. This event highlighted the need for improved weather forecasting, leading to the establishment of the National Weather Service in 1870. Today, Philadelphia continues to face unpredictable weather patterns, underscoring the importance of historical weather events in shaping modern preparedness strategies.

1 of 2

Story summary

Philadelphia faces severe weather Thursday, September 25, with heavy rain, damaging winds, and 3 p.m.–10 p.m. thunderstorms.
Rainfall is expected 0.5 to 3 inches, with urban flash flooding possible.
A cold front keeps unsettled conditions into Friday, with scattered showers and storms.
Tropical Storm Humberto formed and may strengthen, but is not expected to make U.S. landfall.

1 / 2