Coastal Flood, Delaware Beaches / X E Sussex
- When
- January 3, 9:00 AM EST to 11:00 AM EST
- Where
- Delaware Beaches / X E Sussex forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 38.683, -75.339 (the zone’s center; the record gives no point)
On the evening of the 2nd, as one low pressure system headed into the Great Lakes, a second low pressure system formed along its frontal boundary along the coastal plains of the South Atlantic States. This second low increased the pressure gradient (or surface pressure difference between it and a strong high pressure system over the Canadian Maritimes) along the coast and increased the onshore…
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
On the evening of the 2nd, as one low pressure system headed into the Great Lakes, a second low pressure system formed along its frontal boundary along the coastal plains of the South Atlantic States. This second low increased the pressure gradient (or surface pressure difference between it and a strong high pressure system over the Canadian Maritimes) along the coast and increased the onshore flow. The low passed through New Jersey the morning of the 3rd. Gale force winds along coastal areas helped produce minor tidal flooding during the morning of the 3rd. The tidal flooding was exacerbated by heavy rain that was also occurring. The tide reached 7.1 feet above mean lower low water at Lewes at 930 a.m. EST.
The national radar mosaic for the moment the first event began.
1 coastal flood. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Delaware in 1999Every state in 1999This day in weather historyWarnings in Delaware, January 1999
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 2026-09-30. Each event’s entry at NCEI: 5684389.