1 tornado, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
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 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 Seattle, WA wrote its last area forecast discussion before the first event at May 27, 2:00 PM PST, 0 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SEATTLE WA 300 PM PDT THU MAY 27 2004 .SYNOPSIS...AN UPPER LOW...CURRENTLY NEAR NORTHERN VANCOUVER THIS AFTERNOON...WILL MOVE ACROSS THE NORTHWEST WASHINGTON FRIDAY MORNING...BRINGING SHOWERY WEATHER TONIGHT AND A CHANCE OF THUNDERSTORMS ON FRIDAY. STRONG WEST FLOW ALOFT WILL SEND A COUPLE MORE WEAK DISTURBANCES ACROSS THE AREA THIS WEEKEND...MAINTAINING A A CHANCE OF SHOWERS. A PUGET SOUND CONVERGENCE ZONE WILL MAKE SHOWERS LIKELY FROM EVERETT NORTHWARD. EARLY NEXT WEEK...WESTERLY FLOW ALOFT WILL CONTINUE ALONG WITH A CHANCE OF SHOWERS. && .DISCUSSION...WATER VAPOR IMAGERY SHOWS THE APPROACHING UPPER LOW JUST W OF NRN VANCOUVER ISLAND THIS AFTERNOON. MODELS REMAIN CONSISTENT WITH THE PATH OF THE UPPER LOW...BRINGING THE AXIS ACROSS NW WA FRIDAY MORNING. MOS POPS LOOK FINE FOR TODAY THROUGH FRIDAY NIGHT WITH LIKELY OR BETTER FOR THE SHOWERS. HAVE CONTINUED THE CHANCE OF THUNDERSTORMS FRIDAY AND EXPANDED THEM TO COVER ALL OF WESTERN WASHINGTON EXCEPT THE COAST...STRAIT AND OLYMPICS. SEVERE STORM CENTER HAS ALSO INCLUDED GENERAL THUNDERSTORMS OVER WESTERN WA FOR FRIDAY. MESOETA SOUNDINGS DONT SHOW AN OVERWHELMING AMOUNT OF CAPE FOR FRIDAY...BUT BOUNDARY LAYER TEMPS MAY BE A BIT TOO COLD. MODIFYING THE SOUNDING WITH GFS MOS FORECAST TEMPS YIELDS 400-500 J/KG CAPE AND LIS NEAR -2...WHICH IS ENOUGH TO JUSTIFY EXPANDING THE COVERAGE. THE FLOW ALOFT COMES AROUND TO W-NW THROUGH THE WEEKEND AFTER THE UPPER LOW EXITS TO THE EAST FRIDAY NIGHT. GFS CONTINUES TO SHOW A COUPLE OF WEAK DISTURBANCES CROSSING THE AREA WITH LIGHT QPF. GFS/MRF MOS POPS ARE AROUND 60-70...BUT THIS LOOKS WEAKER ENOUGH TO WORD AS SCATTERED SHOWERS...SO HAVE CUT POPS BACK TO AROUND 50...EXCEPT 60 FROM EVERETT UP THROUGH MT VERNON AND OVER THE MOUNTAINS/COAST. SW ONSHORE FLOW CONTINUES THROUGH THE WEEKEND WITH A PERSISTANT PUGET SOUND CONVERGENCE ZONE SIGNATURE. EARLY NEXT WEEK...ZONAL FLOW ALOFT CONTINUES...THOUGH THE GFS SHOWS MORE OF A DIRTY RIDGE AND WEAK ANTI-CYCLONIC FLOW OVER THE AREA COMPARED TO THE ECMWF. SHOULD BE DRIER...BUT GIVEN THE PATTERN CANT PICK OUT ANY TIME PERIOD TO REMOVE THE CHANCE OF RAIN. SO...BROADBRUSH CONTINUES. TEMPS WILL BE SEASONABLE ALL THIS NEXT WEEK. KAM && .SEW...SMALL CRAFT ADVISORY CENTRAL STRAIT AND EAST ENTRANCE. .KATX...VCP21/CSR21. &&
The national radar mosaic for the moment the first event began.
1 tornado. Local standard time, as filed.
A tornado damaged a barn, some trees, and a nearby apartment.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2004Every state in 2004This day in weather historyThe tornado archive for Washington, 2004Warnings in Washington, May 2004
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: 5394205.