Maryland, 2018

Coastal Flood in Maryland, September 25 to 26, 2018

September 25 to 26, 2018 · NWS LWX · 3 events in 1 county or zone

Persistent onshore flow led to increased water level anomalies and coastal flooding.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

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.

What happened

The episode as NWS LWX wrote it up.

Persistent onshore flow led to increased water level anomalies and coastal flooding.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Sep 24, 8:52 PM EST, 3 hours 18 minutes earlier.

Area forecast discussion, Sep 24, 8:52 PM EST, 3 hours 18 minutes before
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Hazardous weather outlook, Sep 24, 9:16 PM EST, 2 hours 54 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 coastal flood. Local standard time, as filed.

Coastal Flood, St. Mary'S

When
September 25, 12:10 AM EST to 3:10 AM EST
Where
St. Mary'S forecast zone
Reported by
River/Stream Gage
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

The gauge at Straits Point (SGSM2) indicated moderate flooding. At this stage, water covers roads on St. Georges Island, is in yards, and approaching structures. To the east, inundation is occurring at multiple marinas off St. Mary's River, Smith Creek, and Jutland Creek.

Coastal Flood, St. Mary'S

When
September 25, 12:10 PM EST to 3:30 PM EST
Where
St. Mary'S forecast zone
Reported by
River/Stream Gage
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

The gauge at Straits Point (SGSM2) indicated moderate flooding. At this stage, water covers roads on St. Georges Island, is in yards, and approaching structures. To the east, inundation is occurring at multiple marinas off St. Mary's River, Smith Creek, and Jutland Creek.

Coastal Flood, St. Mary'S

When
September 26, 12:45 AM EST to 3:15 AM EST
Where
St. Mary'S forecast zone
Reported by
River/Stream Gage
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

The gauge at Straits Point (SGSM2) indicated moderate flooding. At this stage, water covers roads on St. Georges Island, is in yards, and approaching structures. To the east, inundation is occurring at multiple marinas off St. Mary's River, Smith Creek, and Jutland Creek.

What these are

Coastal Flood
Flooding of coastal land by the sea, from storm surge, onshore wind or high tides.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Maryland in 2018Every state in 2018This day in weather historyWarnings in Maryland, September 2018

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 2026-10-01. Each event’s entry at NCEI: 784302, 784303, 784304.