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1. Home
2. News
3. High Tide Flooding Archive
4. High Tide Bulletin: Spring 2023

NOAA High Tide Bulletin
          Spring 2023: When you may experience higher than normal high tides between **March and May 2023**.


The rising and falling of the sea is a phenomenon upon which we can always depend. Tides are the regular rise and fall of the sea surface caused by the gravitational pull of the moon and sun and their position relative to the earth. There are some factors that cause the tides to be higher than what is "normally" seen from day to day. This bulletin tells you when you may experience higher than normal high tides for the period of time between March and May 2023. We also publish annual high tide flooding reports that present a broad outlook of what to expect for a given year in terms of high tide flooding, as well as a summary of high tide flooding events for the previous calendar year. Higher than normal high tides alone do not necessarily cause coastal flooding. However, they are becoming increasingly impactful due to continued sea level rise. High tide
            flooding that inundates busy streets, and washes out beaches is more likely to occur during these periods depending on your location along the coast. More severe flooding may result if adverse weather — heavy rains, strong wind or big waves — conditions are present.
 Select Your Region Select your region to see when you may experience higher than normal tides that may cause flooding. NOAA Coastal Inundation Dashboard The NOAA Coastal Inundation Dashboard provides real-time water levels with forecasts out to 48 hours for all tidal stations. High Tide Flooding Bulletin: Historical
                  Archive View an archive of past high tide flooding dates for all regions. Center for Operational Oceanographic
                  Products and Services (CO-OPS) CO-OPS is the NOAA tides and currents office. Print High Tide Bulletin Print or save this bulletin as a PDF document.
 NORTHEAST OUTLOOK
 Dates: March 21-24
                          April 19-21
                          No dates in May Locations: Tide stations at the following locations have the greatest chance of seeing high tide flooding: Bar Harbor, Maine; Kings Point, New York
                            Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? In March, a perigean spring tide will occur. This is when the moon is either new or full and closest to earth. Higher than normal high tides and lower than normal low tides will occur.
                            
                            Mean sea level is typically higher in the late spring due to changing weather patterns and increasing water temperatures. What kind of impact might I expect along the coast? Low lying areas may flood, however high tides alone will likely not cause a significant impact on the coast in most areas unless accompanied by a storm or strong winds.
							 Lower than normal low tides will also occur.
 MID-ATLANTIC OUTLOOK
 Dates: March 19-22
                          No dates in April - May Locations: Tide stations at the following locations have the greatest chance of seeing high tide
            flooding: Sandy Hook, New Jersey             
              Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? In March, a perigean spring tide will occur. This is when the moon is either new or full and closest to earth. Higher than normal high tides and lower than normal low tides will occur. What kind of impact might I expect along the coast? Minor tidal flooding along the coast, in particular in low-lying areas.
                            If a storm occurs at this time, increased levels of tidal flooding and coastal erosion may occur.
                            Lower than normal low tides will also occur.
 SOUTHEAST OUTLOOK
 Dates: No dates in March - May Locations: Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? The Southeast will not be significantly impacted. What kind of impact might I expect along the coast? The Southeast is unlikely to experience coastal flooding based primarily on tides this spring.
 GULF COAST OUTLOOK
 Dates: No dates in March - May Locations: Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? The Gulf Coast will not be significantly impacted. Why won’t they be impacted? In many locations of the Gulf Coast, the tidal range is relatively small compared to other regions of the U.S. so they will not be as significantly impacted by a perigean spring tide.
 WEST COAST OUTLOOK
 Dates: No dates in March - May Locations: Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? The West Coast will not be significantly impacted. What kind of impact might I expect along the coast? The West Coast is unlikely to experience coastal flooding based primarily on tides this spring.
 PACIFIC ISLANDS OUTLOOK
 Dates: No dates in March - May Locations: Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? Hawaii and the Pacific Islands will not be significantly impacted. What kind of impact might I expect along the coast? Hawaii and the Pacific Islands are unlikely to experience coastal flooding based primarily on tides this spring.
 ALASKA OUTLOOK
 Dates: March 20-25
			April 19-22
			No dates in May Locations: Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? In March, a perigean spring tide will occur. This is when the moon is either new or full and closest to earth. Higher than normal high tides and lower than normal low tides will occur.
            Mean sea level is typically higher in the late spring due to changing weather patterns and increasing water temperatures. What kind of impact might I expect along the coast? Due to the topography, in particular for southeast Alaska (less low lying areas), tidal flooding will generally not have a significant impact on the coast unless there is a severe storm.
              Lower than normal low tides will also occur.
 CARIBBEAN ISLANDS OUTLOOK
 Dates: The Caribbean Islands will not be significantly impacted. Locations: Visit the NOAA Coastal Inundation Dashboard for this region to view real-time water levels with forecasts out to 48 hours.
 Why will they be higher than normal? The Caribbean Islands will not be significantly impacted. What kind of impact might I expect along the coast? For Puerto Rico and the U.S. Virgin Islands, the tidal range is relatively small compared to other regions of the U.S, so these locations will not be significantly impacted by a perigean spring tide. However, local flooding may occur due to wave, rainfall, and elevated groundwater effects — particularly if there is a severe storm.


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