Weather Alerts For New Castle, DE

# HEADLINE -------------------- COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT THURSDAY NIGHT # SUMMARY -------------------- Delaware River at Reedy Point MLLW Categories - Minor 7.2 ft, Moderate 8.2 ft, Major 9.2 ft MHHW Categories - Minor 1.4 ft, Moderate 2.4 ft, Major 3.4 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 22/09 PM 7.3 1.5 1.3 Minor 23/10 AM 7.0 1.2 1.7 None 23/10 PM 7.9 2.1 1.8 Minor 24/10 AM 7.4 1.6 1.8 Minor 24/10 PM 7.9 2.1 1.8 Minor 25/11 AM 7.7 1.9 1.8 Minor # DETAILS -------------------- WHAT Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. WHERE In Delaware, New Castle. In New Jersey, Salem. WHEN Until midnight EDT Thursday night. IMPACTS At this level, flooding begins on the most vulnerable roads along tidal waterways. Some partial or full road closures are possible. ADDITIONAL DETAILS Widespread minor tidal flooding could continue through at least Friday night's high tide or perhaps longer. ISSUED AT Tuesday, September 22, 2026 at 9:53 PM EDT ISSUED BY National Weather Service Mount Holly NJ HEADER Coastal Hazard Message # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- A Coastal Flood Advisory means that minor tidal flooding is expected. Minor tidal flooding often results in some road closures. Usually, the most vulnerable roadways will flood. Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge. # AREAS AFFECTED -------------------- New Castle, Salem