Heavy rains gushed down sidewalks in downtown Friday Harbor, keeping patrons inside and flooding businesses on Spring Street and First Street including Black Fish, the Bean Cafe, Pelindaba Lavender, Arctic Raven Gallery, King’s Market, stores in Surina Business Park off Malcolm Street and more.
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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 SEW wrote it up.
Heavy rains gushed down sidewalks in downtown Friday Harbor, keeping patrons inside and flooding businesses on Spring Street and First Street including Black Fish, the Bean Cafe, Pelindaba Lavender, Arctic Raven Gallery, King’s Market, stores in Surina Business Park off Malcolm Street and more.
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 Sep 3, 8:15 AM PST, 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SEATTLE WA 915 AM PDT THU SEP 3 2015 .SYNOPSIS...AN UPPER LEVEL LOW OVER SOUTHWEST BRITISH COLUMBIA WILL MOVE SLOWLY SOUTH OVER WESTERN WASHINGTON TODAY AND TONIGHT. SCATTERED SHOWERS WILL CONTINUE IN THE COOL UNSTABLE AIR MASS ALONG WITH ISOLATED MAINLY AFTERNOON AND EVENING THUNDERSTORMS. THE UPPER LOW WILL MOVE SOUTH OVER OREGON ON FRIDAY ALLOWING THE AIR MASS TO GRADUALLY DRY AND WARM. A WEAK FRONTAL SYSTEM WILL BRING A CHANCE OF SHOWERS ON SUNDAY. ADDITIONAL WEAK SYSTEMS WILL MAINTAIN AN UNSETTLED WEATHER PATTERN EARLY NEXT WEEK. && .SHORT TERM...THE COLD UPPER LEVEL LOW HAS MOVED S OVER SW B.C. THIS MORNING AND IS EXPECTED TO CONTINUE MOVING S ACROSS W WA...REACHING NW OREGON FRIDAY MORNING. THE AIR MASS WITH THE LOW REMAINS MOIST AND UNSTABLE. WATER VAPOR IMAGERY SHOWS A SMALL WEAK UPPER LEVEL SHORTWAVE TROUGH ROTATING AROUND THE SOUTHERN QUADRANT OF THE LOW...WHICH HAS PUSHED AN AREA OF SHOWERS AND ISOLATED THUNDERSTORMS OVER THE COAST AT 8 AM THIS MORNING. MODELS BRING THE SHORTWAVE TROUGH E ACROSS THE W WA INTERIOR LATE THIS MORNING. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE THIS AFTERNOON...ALTHOUGH THE NAM BUFR SOUNDING FOR KSEA SHOWS A LITTLE WEAKER INSTABILITY THAN YESTERDAY. SCATTERED SHOWERS WILL CONTINUE OVER W WA THIS EVENING WITH THE LOW OVERHEAD...THEN GRADUALLY DIMINISH OVER THE LOWLANDS LATE TONIGHT AS THE LOW CONTINUES S. DRIER N-NE FLOW ALOFT WILL DEVELOP OVER THE AREA FRIDAY WHICH SHOULD RESULT IN GRADUAL CLEARING FRIDAY AFTERNOON. MAX TEMPS WILL BE ABOUT 10 DEGREES COOLER THAN NORMAL WITH HIGHS IN THE LOWER TO MID 60S TODAY AND IN THE 60S ON FRIDAY. LOWS TONIGHT AND ESPECIALLY FRIDAY NIGHT WILL BE QUITE COOL...40S TO LOWER 50S. WITH ENOUGH CLEARING FRIDAY NIGHT IT IS POSSIBLE THAT SOME OF THE VERY COLDEST SPOTS COULD REACH THE UPPER 30S. THE UPPER LEVEL LOW WILL BE OVER E OREGON AND HEADED E ON SATURDAY WHILE AN OFFSHORE UPPER LEVEL SHORTWAVE RIDGE MOVES SE OVER W WA SATURDAY AFTERNOON. SUNNY WEATHER IS STILL EXPECTED SATURDAY WITH MAX TEMPS WARMING INTO THE UPPER 60S AND LOWER 70S. KAM .LONG TERM...MODERATE NW FLOW ALOFT WILL DEVELOP OVER THE REGION AFTER SATURDAY. THE GFS AND ECMWF HAVE BEEN CONSISTENT THE PAST SEVERAL RUNS IN BRINGING A WEAK UPPER LEVEL SHORTWAVE TROUGH AND THE ASSOCIATED WEAKENING COLD FRONT ACROSS W WA ON SUNDAY. THIS SYSTEM DOES NOT LOOK THAT POTENT SO POPS REMAIN IN THE CHANCE RANGE FOR NOW. BOTH MODELS HAVE A WEAK LOOKING UPPER LEVEL SHORTWAVE RIDGE MOVING OVER THE AREA ON LABOR DAY...HOWEVER THE ECMWF HAS A LITTLE WEAKER RIDGE AND TRIES TO SPREAD A LITTLE PRECIPITATION OVER THE AREA IN THE AFTERNOON. CONFIDENCE IS NOT PARTICULARLY HIGH FOR MONDAY SINCE THE MODELS OVER THE PAST FEW DAYS HAVE BEEN INCONSISTENT FOR EARLY NEXT WEEK. KAM && .AVIATION...THE UPPER LEVEL LOW OVER THE PACIFIC NORTHWEST WILL CONTINUE TO DIG SOUTH ALONG THE WASHINGTON AND OREGON COAST. THERE REMAINS ENOUGH INSTABILITY TO SUPPORT SHOWERS AND THUNDERSTORMS...THOUGH THE IT LOOKS A LITTLE MORE LIMITED THAN YESTERDAY. ABUNDANT LOW LEVEL MOISTURE KEEPING CEILINGS DOWN AROUND MVFR LEVELS THROUGH MUCH OF THE INTERIOR WHILE A LINE OF SHOWERS AND THUNDERSTORMS MOVING ONTO THE WA COAST HAS CEILINGS THERE SOLIDLY IFR. EXPECT MVFR CEILINGS...WITH POSSIBLE IFR CONDITIONS ASSOCIATED WITH SHOWERS THIS MORNING. CONDITIONS WILL GENERALLY IMPROVE THROUGH THE LATE MORNING TO VFR...THOUGH SHOWERS...THUNDERSTORM...AND LOWER CEILINGS AND VISIBILITIES REMAIN POSSIBLE THE AFTERNOON. LIGHT WESTERLY FLOW ALOFT WILL BECOME NORTHERLY AS THE UPPER LEVEL LOW WORKS SOUTH. THE AIR MASS WILL REMAIN MOIST AND SOMEWHAT UNSTABLE TODAY. KSEA...VFR CEILINGS THIS MORNING WILL GRADUALLY BECOME MVFR. A BAND OF SHOWERS AND THUNDERSTORMS ALONG THE COAST AT 15Z WILL MOVE INTO THE METRO AREA BY 16/17Z BRINGING SHOWERS...POSSIBLY LIGHTNING AND LOWER CEILINGS. LIGHT SOUTHERLY WINDS WILL STRENGTHEN SOMEWHAT THIS AFTERNOON TO 8 TO 10 KT BEFORE BECOMING NORTHERLY LATE IN THE AFTERNOON. GUSTY WINDS ARE POSSIBLE WITH THUNDERSTORMS TODAY. && .MARINE...VERY WEAK LOW LEVEL ONSHORE FLOW TODAY WILL BECOME OFFSHORE FRIDAY MORNING AS A SURFACE LOW MOVES SOUTH THROUGH THE OFFSHORE AND COASTAL WATERS. AN UPPER LEVEL TROUGH OVER THE PAC NW WILL CONTINUE TO SUPPORT SCATTERED THUNDERSTORMS AND SHOWERS OVER AREA WATERS TODAY...WITH GUSTY VARIABLE WINDS POSSIBLE. ONSHORE GRADIENTS AND FLOW WILL STRENGTHEN FRIDAY AFTERNOON AND EVENING...WITH NORTHERLY WINDS OVER THE COASTAL WATERS. HIGH PRESSURE WILL BUILD OVER THE WATERS FRIDAY INTO THE WEEKEND. && .SEW WATCHES/WARNINGS/ADVISORIES... WA...NONE. PZ...NONE. && WWW.WEATHER.GOV/SEATTLE YOU CAN SEE AN ILLUSTRATED VERSION OF THIS DISCUSSION AT WWW.WEATHER.GOV/SEATTLE/GAFD/LATEST_WEBAFD.HTML
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SEATTLE WA 438 AM PDT THU SEP 3 2015 WAZ513-567>569-040000- OLYMPICS-CASCADES OF WHATCOM AND SKAGIT COUNTIES- CASCADES OF SNOHOMISH AND KING COUNTIES- CASCADES OF PIERCE AND LEWIS COUNTIES- 438 AM PDT THU SEP 3 2015 ...EXPECT SNOW SHOWERS IN THE MOUNTAINS ABOVE 5500 FEET TODAY... THE SNOW LEVEL WILL BE AROUND 5500 TO 6000 FEET TODAY AS AN UNSEASONABLY DEEP UPPER LEVEL TROUGH MOVES OVER THE PACIFIC NORTHWEST. THE SNOW SHOWERS ABOVE 5500 FEET COULD PRODUCE LOCALLY UP TO 6 INCHES OF NEW SNOW OVER THE HIGHER ELEVATIONS. THE BEST CHANCE OF HIGHER ELEVATION SNOW SHOWERS WILL BE OVER THE NORTH CASCADES. THIS IS A RATHER COLD WEATHER SYSTEM FOR THE END OF SUMMER SO BACK COUNTRY TRAVELLERS SHOULD BE PREPARED FOR UNUSUALLY EARLY FALL- LIKE WEATHER. WWW.WEATHER.GOV/SEATTLE
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
The rain culminated in a rushing torrent of water down the sidewalks and pooling on First Street. Cars were up to their bumpers in water, and about five inches of rain water pooled in King’s Market, which had to close temporarily in order to remove the water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2015Every state in 2015This day in weather historyWarnings in Washington, September 2015
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: 602672.