Weather World
Town of Dewey Beach, DE
Dewey Beach Weather Advisory
FLOOD WATCH
Issue Date: 124 PM EDT Mon Sep 21 2026
HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING
COASTAL FLOOD ADVISORY IN EFFECT FROM 4 PM TO 10 PM EDT TUESDAY
COASTAL FLOOD WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE THURSDAY NIGHT
WHAT
For the High Rip Current Risk, dangerous rip currents expected. For the Coastal Flood Advisory, up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Watch, one to two feet of inundation above ground level possible in low- lying areas near shorelines and tidal waterways. WHERE
Delaware Beaches. WHEN
For the High Rip Current Risk, from Tuesday morning through Tuesday evening. For the Coastal Flood Advisory, from 4 PM to 10 PM EDT Tuesday. For the Coastal Flood Watch, from Wednesday afternoon through late Thursday night. IMPACTS
At this level, widespread roadway flooding occurs in coastal and bayside communities and along inland tidal waterways. Many roads become impassable. Some damage to vulnerable structures may begin to occur. Rip currents can sweep even the best swimmers away from shore into deeper water. ADDITIONAL DETAILS
Moderate tidal flooding could continue through at least Friday evening`s high tide or perhaps longer.
PRECAUTIONARY/PREPAREDNESS ACTIONS
A Coastal Flood Watch means that conditions favorable for flooding are expected to develop. Be prepared to begin taking appropriate action to protect life and property. Follow the recommendations of local emergency management officials. Be sure to check the latest forecast from time to time in case a warning is issued or any new information becomes available. 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. Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help. && Time of high total tides are approximate to the nearest hour. Delaware Bay at Lewes MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 21/06 PM 5.8 1.2 1.4 None 22/06 AM 5.3 0.7 1.7 None 22/06 PM 6.5 1.8 2.0 Minor 23/07 AM 6.1 1.5 2.2 Minor 23/07 PM 7.1 2.5 2.4 Moderate 24/08 AM 6.5 1.8 2.4 Minor &&
HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING
COASTAL FLOOD ADVISORY IN EFFECT FROM 4 PM TO 10 PM EDT TUESDAY
COASTAL FLOOD WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE THURSDAY NIGHT
WHAT
For the High Rip Current Risk, dangerous rip currents expected. For the Coastal Flood Advisory, up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Watch, one to two feet of inundation above ground level possible in low- lying areas near shorelines and tidal waterways. WHERE
Delaware Beaches. WHEN
For the High Rip Current Risk, from Tuesday morning through Tuesday evening. For the Coastal Flood Advisory, from 4 PM to 10 PM EDT Tuesday. For the Coastal Flood Watch, from Wednesday afternoon through late Thursday night. IMPACTS
At this level, widespread roadway flooding occurs in coastal and bayside communities and along inland tidal waterways. Many roads become impassable. Some damage to vulnerable structures may begin to occur. Rip currents can sweep even the best swimmers away from shore into deeper water. ADDITIONAL DETAILS
Moderate tidal flooding could continue through at least Friday evening`s high tide or perhaps longer.
PRECAUTIONARY/PREPAREDNESS ACTIONS
A Coastal Flood Watch means that conditions favorable for flooding are expected to develop. Be prepared to begin taking appropriate action to protect life and property. Follow the recommendations of local emergency management officials. Be sure to check the latest forecast from time to time in case a warning is issued or any new information becomes available. 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. Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help. && Time of high total tides are approximate to the nearest hour. Delaware Bay at Lewes MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 21/06 PM 5.8 1.2 1.4 None 22/06 AM 5.3 0.7 1.7 None 22/06 PM 6.5 1.8 2.0 Minor 23/07 AM 6.1 1.5 2.2 Minor 23/07 PM 7.1 2.5 2.4 Moderate 24/08 AM 6.5 1.8 2.4 Minor &&
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