Washington, 1996

Flood in Washington, December 29 to 31, 1996

December 29 to 31, 1996 · NWS SEW · 1 event in 1 county or zone

The snow changed to rain by 10 am causing numerous flooded streets, basement apartments and mudslides. By that evening anywhere from an inch to an inch and a half of rain fell on top of the snow cover and temperatures rose to near 50 degrees.

Where it happened

Every event with a place to put it; 1 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

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The toll

Deaths
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

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 SEW wrote it up.

The snow changed to rain by 10 am causing numerous flooded streets, basement apartments and mudslides. By that evening anywhere from an inch to an inch and a half of rain fell on top of the snow cover and temperatures rose to near 50 degrees. By the next day, seatac nearly had a record high. Road and urban flooding was widespread. So many roads were closed due to flooding that the city of Seattle ran out of "road closed" signs. 10 police cruisers were shorted out due to the standing water. Hundreds of basements flooded. The Chelalis peaked at 70.2 ft, 5 feet above flood stage. Hospitals at this time were 90 to 105% full. There were nearly 100 different mudslides and between them and flooded roads, 25 state routes were closed. An estimated $21 million damage to roads. On the coast it was even worse. In the 36 hrs ending at 8 am Dec. 30th Cosmopolis was swamped with 5.97 inches of rain. Pacific Beach had 4.06 in 24 hours, Elma 3.85, and Brinnon, 2.75 all ending at 8 am. A mudslide blocked all four lanes of US Hwy 12, the main route into Hoquiam. Adding to the misery was swells of 22 to 25 ft along the coast. A Redmond man was killed when a tree crashed down on his moving vehicle. The tree was loosened by a flooded stream and gusty winds.

The radar

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

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Event by event

1 flood. Local standard time, as filed.

Flood, Grays Harbor

When
December 29, 10:00 AM PST to December 31, 4:00 PM PST
Where
Grays Harbor County, Cosmopolis
Deaths
1 direct, 0 indirect
Coordinates
47.144, -123.828 (the zone’s center; the record gives no point)

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Flood, Grays Harbor1996-12-3147MaleVehicle/Towed TrailerDirect

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

More

Every storm in Washington in 1996Every state in 1996This day in weather historyWarnings in Washington, December 1996

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. Each event’s entry at NCEI: 5577240.