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 Boise, ID wrote its last area forecast discussion before the first event at Jun 23, 6:46 PM PST, 24 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE IDAHO 846 PM MDT WED JUN 23 2004 .DISCUSSION...UPPER LEVEL RIDGE OVERHEAD. ISOLATED -TSRA IN OUR CWA THIS EVENING IN UNSTABLE BUT GENERALLY TOO-DRY AIR MASS...00Z BOI RAOB HAD ONLY .37 INCH PRECIPITABLE WATER. 00Z GFS HAD UPWARD OMEGA AT 700 MB EXTENDING ALONG IDAHO/NEVADA BORDER NWWD TO BAKER COUNTY WITH SEPARATE AREA IN CAMAS AND ERN BOISE COUNTIES...THE SAME PLACES WHERE LIGHTNING OCCURRED IN OUR CWA. GFS SHOWS ALMOST IDENTICAL PATTERN FOR NOON THU...A LITTLE TOO SOON TO TAKE ADVANTAGE OF DAYTIME HEATING...BUT THE PATTERN CHANGES TO UPWARD MOTION ALL OVER OUR CWA LATE THU. SO EXPECT COVERAGE OF -TSRA TO BE SLIGHTLY MORE EXTENSIVE THU THAN TODAY. BUT LOW LEVELS WILL REMAIN VERY DRY AND THE MAIN FEATURE WILL BE GUSTY WINDS. GRADUAL MOISTENING/COOLING AND SLIGHTLY HIGHER POPS THIS WEEKEND AS PACIFIC LOW COMES CLOSER TO COAST. MEANWHILE CONTINUED VERY WARM/HOT. CURRENT FORECAST GOOD... NO UPDATES. && .PREVIOUS DISCUSSION... SHORT TERM...TONIGHT THROUGH SATURDAY. L/WV HIGH PRESSURE RIDGE WILL REMAIN OVER WESTERN NORTH AMERICA THROUGH SHORT TERM BUT WEAKEN SLOWLY FRI/SAT AS EASTERN PACIFIC LOW PRESSURE TROUGH NUDGES CLOSER TO NORTHWEST COAST IN RESPONSE TO DIGGING S/WV SOUTH OF ALEUTIAN ISLANDS. HIGH PRESSURE RIDGE AXIS DIRECTLY OVER CWFA KEEPING CWFA AIR MASS VERY WARM AND UNSTABLE. SHALLOW H6-H5 MOISTURE LAYER REMAINS OVER CWFA WITH LOW-LEVEL AIR MASS VERY DRY. THIS WILL KEEP DIURNAL CONVECTION PLACE THROUGH FRI FOR MINIMAL THREAT OF HIGH-BASED THUNDERSTORMS OVER NORTHERN ZONES AND MOUNTAINS OF SOUTHERN ZONES. AS EASTERN PACIFIC TROUGH SWINGS TOWARD NORTHWEST COAST FRI NIGHT/SAT A SLIGHT INCREASE IN MOISTURE PUSHES INTO NORTHERN ZONES FOR SLIGHTLY HIGHER POPS. BUT RIDGE WILL WEAKEN APPROACHING TROUGH KEEPING SOUTHERN ZONES MOSTLY DRY. TEMPS REMAIN WELL ABOVE NORMAL THU BEFORE SLOW COOLING FRI/SAT DUE TO LOWERING HEIGHTS/THICKNESS AS EASTERN PACIFIC TROUGH APPROACHES NORTHWEST AND UPPER RIDGE WEAKENS. HOWEVER TEMPS SAT STILL AROUND 5 DEGREES ABOVE NORMAL. LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...A MOIST UPPER LEVEL TROUGH CONTINUES ITS PATH OVER THE NORTH PART OF THE CWA WITH SLIGHT CHANCE OF THUNDERSTORMS SUNDAY AND MONDAY. ON TUESDAY A RIDGE REBUILDS INTO THE AREA PUSHING THE THUNDERSTORMS NORTH AND EAST OF THE CWA. TEMPERATURES WILL REMAIN ABOUT 5 DEGREES ABOVE NORMALS. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...NONE. OR...NONE. && DISCUSSION........LC PREV SHORT TERM...KP PREV LONG TERM....DH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 530 AM MDT WED JUN 23 2004 IDZ011>016-028>030-ORZ061>064-241200- BAKER COUNTY-BOISE MOUNTAINS-CAMAS PRAIRIE-HARNEY COUNTY- LOWER TREASURE VALLEY-MALHEUR COUNTY-OREGON LOWER TREASURE VALLEY- OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY-SOUTHWEST HIGHLANDS- UPPER TREASURE VALLEY-WEST CENTRAL MOUNTAINS-WESTERN MAGIC VALLEY- 530 AM MDT (430 AM PDT) WED JUN 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST IDAHO AND SOUTHEAST OREGON. .DAY ONE...TODAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.
The Pendleton radar (KPDT), 122 km away, was scanning. The volume nearest the first event began at 03:10 UTC.
1 tornado. Local standard time, as filed.
some trees torn up in field 1/2 mile east of I84 exit 298.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2004Every state in 2004This day in weather historyThe tornado archive for Oregon, 2004Warnings in Oregon, June 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: 5410224.