Astronomical Low Tide in Delaware
Every astronomical low tide event the National Weather Service has filed in Delaware, year by year, with the most significant episodes. Unusually low water from tides and offshore wind that caused impacts.
The most significant on the map
The most significant astronomical low tide episodes in Delaware.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 68
- Deaths
- 0
- Injuries
- 1
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Astronomical Low Tide in Delaware, August 23, 2017Someone injured a knee while trying to get away from a rip current.
- High Wind and Strong Wind in Delaware, March 6 to 7, 1997A rapidly intensifying low pressure system and the pressure difference between it and a high pressure system over the Upper Plains caused damaging winds in the northern half of the state and very strong winds in the southern half of the state.
- Astronomical Low Tide in Delaware, December 11 to 12, 2009Two days of persistent strong westerly offshore flow resulted in blow out tides during the evening low tide on the 11th along the Atlantic Coast and the overnight low tide in Delaware Bay and the lower Delaware River.
- Astronomical Low Tide in Delaware, January 8 to 9, 2009A potent pair of storms moved through the Mid Atlantic and Northeast during the 7th and into the 8th. One potent storm moved across the eastern Great Lakes region during the evening of the 7th, while a secondary potent storm developed along a front off the New Jersey coast.
- Astronomical Low Tide in Delaware, January 2 to 3, 2010The strong and persistent offshore flow coupled with the recent full moon caused blow out tides at the times of low tide in Sussex County during the late afternoon of the 3rd and along tidal sections of the Delaware River and its tributaries as well as upper Delaware Bay from…
- Astronomical Low Tide in Delaware, February 25 to 26, 2012Strong west winds circulating around an intense low pressure system moving through the Canadian Maritimes (it bottomed at 963 millibars at 1 p.m.
- Astronomical Low Tide in Delaware, February 20 to 21, 2015The combination of persistent northwest winds and spring tides following the new moon caused blowout tides on the tidal Delaware River and its tributaries and upper Delaware Bay with both low tide cycles on the 20th and in lower Delaware Bay and along the Atlantic coast with all…
- Astronomical Low Tide in Delaware, December 15 to 16, 2016Strong northwesterly wind gusts up to 50-55 mph in the wake of an arctic cold front resulted in Low Water/Blowout Tides in Delaware Bay during the overnight hours of December 15th into the 16th.
- Winter Storm and Astronomical Low Tide in Delaware, January 19, 2024A winter storm brought widespread light to moderate snowfall accumulations across the region. The heaviest snowfall occurred across the upper portion of the Delmarva peninsula with totals around 3 to 6. A coating of snow also occurred farther south with amounts around 1 to 3.
- Astronomical Low Tide in Delaware, February 16 to 18, 2007A persistent northwest to west flow following the winter storm on February 13th and 14th culminated in blow-out tides around the times of low tide from the late afternoon of the 16th into the early morning of the 18th.
- Astronomical Low Tide in Delaware, February 4 to 6, 2007A persistent northwest flow started on February 4th and continued through February 6th. This caused blowout tides starting with the morning low tide on February 4th in Sussex and Kent Counties.
- Astronomical Low Tide in Delaware, February 11, 2008Persistent and strong west to northwest winds caused blowout tide conditions to occur at times of low tide in Delaware Bay and along the ocean during both low tides on the 11th. The lowest tides occurred with the late afternoon and early evening low tide on the 11th.
- Astronomical Low Tide in Delaware, April 18, 2007The combination of the leftover onshore flow from the departing nor'easter and the astronomical spring tides caused by the new moon caused minor tidal flooding at the time of high tide on the evening of the 18th along the lower Delaware Bay and coastal sections of Sussex County.
- Astronomical Low Tide in Delaware, March 6, 2007The continued strong west to northwest winds from the 5th into the 6th produced blow out tides during the morning and evening low tides on the 6th along the Delaware River and in Delaware Bay along Kent County. The lowest tides occurred during the morning low tide.
- Astronomical Low Tide in Delaware, April 18 to 20, 2007The combination of the leftover onshore flow from the departing nor'easter and the astronomical spring tides caused by the new moon caused minor tidal flooding along the upper Delaware Bay and the Delaware River and tidal sections of its tributaries for three successive high…
- Astronomical Low Tide in Delaware, January 3, 2008A persistent gale force northwest flow down Delaware Bay caused blow-out tides to occur during the early morning low tide along the Delaware River, tidal sections of its tributaries and upper parts of Delaware Bay on January 3rd.
- Astronomical Low Tide in Delaware, December 31, 2008The persistent and strong west to northwest offshore flow caused blowout tides to occur in upper Delaware Bay as well as along tidal sections of the Delaware River during the evening low tide on the 31st.
- Astronomical Low Tide in Delaware, December 29, 2009The combination of the strong northwest winds during the day on the 29th and the larger tide ranges associated with the approaching full moon spring tides produced blowout tides during the afternoon low tide on the 29th along tidal sections of the Delaware River and Upper…
- Astronomical Low Tide in Delaware, February 19, 2011The strong to high northwest winds that occurred throughout the day caused blowout tides to occur in the Upper Delaware Bay and tidal sections of the Delaware River and its tributaries during the late afternoon and early evening low tide cycle on the 19th.
- Astronomical Low Tide in Delaware, February 25 to 26, 2011The storm force northwest wind gusts that occurred during the late afternoon helped cause blow out tides during the evening and early overnight low tide cycle in Delaware Bay, the lower Delaware River and as well as tidal sections of its tributaries on the 25th.
- Astronomical Low Tide in Delaware, March 9, 2012Strong northwest winds which coincided with the astronomical low tide during the early morning on March 9th caused blowout tide conditions during the low tide cycle in the lower Delaware Bay and Delaware's Atlantic coast.
- Astronomical Low Tide in Delaware, February 15 to 16, 2015The very persistent and strong to damaging northwest winds that started overnight on the 14th caused blowout tide conditions during the three subsequent low tide cycles from the early morning of the 15th through the early morning of the 16th on the Delaware River and its tidal…
- Winter Storm and Astronomical Low Tide in Delaware, January 5 to 6, 2017A clipper system moving in from the northwest, combined with cold temperatures and a secondary low moving northeast along the coast, gave the Diamond State it's first general snowfall of the season.
- Astronomical Low Tide in Delaware, February 10 to 11, 2008Persistent and strong west to northwest winds caused blowout tide conditions to occur at times of low tide along the Delaware River and tidal sections of its tributaries from the evening low tide on the 10th through the evening low tide on the 11th.
- Astronomical Low Tide in Delaware, December 27 to 28, 2010The persistent offshore flow caused by the departed winter storm and an approaching high pressure system caused blow out tides to occur at the time of low tide on the Delaware River and tidal sections of its tributaries around Midnight EST on the 28th.
More
Astronomical Low Tide everywhereEvery kind of event in Delaware
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.