1 thunderstorm wind, 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 26, 7:45 PM MST, 4 hours 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE IDAHO 845 PM MDT SAT JUN 26 2004 .DISCUSSION...UNLIKE YESTERDAY...TODAY/S CONVECTIVE WX MOVED OFF THE SOUTHERN CWA BORDERS INTO THE TREASURE VALLEY...PRECEDED BY GUSTY SOUTHERLY OUTFLOW WINDS. THIS DIFFERENCE WAS PROBABLY DUE TO STRONGER SOUTHERLY COMPONENT ALOFT CAUSED BY PACIFIC SHORT WAVE TROUGH PIVOTING NORTH THROUGH WRN OREGON AND WASHINGTON. AS NOTED IN AFTERNOON DISCUSSION THUNDERSTORMS MAY LAST WELL INTO THE NIGHT RATHER THAN BEING DIURNALLY DRIVEN. FORECASTS HAVE BEEN UPDATED FOR CURRENT OBSERVED CONDITIONS AND LATEST SATELLITE AND RADAR TRENDS. && .PREVIOUS DISCUSSION... .SHORT TERM...CONVECTION THUS FAR HAS BEEN TO SLOW TO DEVELOP OVER THE CWFA BUT NOW APPEARS TO BE FIRING UP NORTH OVER GEG AND MSO AREAS AS WELL AS PIHS CENTRAL MOUNTAIN ZONES. A FEW WEAKER CELLS HAVE FORMED ALONG THE NEVADA BORDER DURING THE PAST HOUR BUT NOTHING STRONG JUST YET. MEANWHILE, SHORT WAVE ENERGY CONTINUES TO MOVE EAST FROM THE PACIFIC AND SHOULD CERTAINLY HELP TO DESTABILIZE AND ORGANIZE CONVECTIVE ACTIVITY AS THE AFTERNOON AND EVENING WEAR ON. THUS, IT APPEARS THE MAIN SHOW OF CONVECTION WILL DEVELOP A LITTLE LATER AS THE SHORT WAVE DYNAMICS INTERACT ALONG THE THERMAL BOUNDARY AND VERY UNSTABLE AIR MASS LATER THIS EVENING. GIVEN THIS LATER TIMING OF CONVECTION, ITS POSSIBLE WE MAY SUSTAIN A NOCTURNAL EVENT OF THUNDERSTORMS LASTING IN THE WEE HOURS SUNDAY MORNING. SHORT WAVE PROGGED TO ROTATE NORTHWARD THROUGH THE COLUMBIA BASIN OF EASTERN WASHINGTON OVERNIGHT LEAVING THE TAIL END OF THE WAVE OVER SOUTHWEST IDAHO. SUNDAY ALSO LOOKS VERY UNSTABLE BY AFTERNOON AND WITH DEWPOINTS INTO THE LOWER 50S, IT SHOULD BE QUITE EASY TO FIRE OFF CONVECTION OF A MORE AIR MASS PULSE TYPE ENVIRONMENT. TEMPERATURES NOT FALLING THAT MUCH AND MOS NUMBERS HAVE BEEN COMING IN TOO LOW ALMOST DAILY. THIS IS ESPECIALLY TRUE SINCE THERMAL FEATURE NEVER REALLY LEAVES THE AREA, BUT INSTEAD GETS TEMPORARILY WEAKENED BEFORE INTENSIFYING ALL OVER AGAIN AS IT PULSES EAST AND WEST ACROSS THE FORECAST AREA. ENOUGH INSTABILITY REMAINS OVER THE REGION EARLY INTO THE WEEK TO KEEP THE MENTION OF SHOWERS/THUNDERSTORMS IN THE FORECAST UNDER THIS PERSISTENT UNSTABLE PATTERN. .LONG TERM...TUESDAY NIGHT THROUGH SATURDAY. CUTOFF FEATURE ALONG CALIFORNIA COAST HAS LONG FETCH OF SOUTHERLY FLOW INTO THE FORECAST AREA. GFS INSISTS THAT MOST MOISTURE WILL BE PULLED NORTHWARD THROUGH COLORADO AND WYOMING...AND THEN CONCENTRATED ACROSS NORTHERN IDAHO AND SOUTHWARD ALONG THE CASCADES AND SIERRAS...WITH A SERIOUS DRY SLOT OVER OUR FORECAST AREA. DONT REALLY BUY THE DETAILS OF THAT...BELIEVING THAT SLIGHT CHANCE OF THUNDERSTORMS IS STILL VALID NEARLY EVERY DAY WITH SOUTHERLY FLOW. FURTHERMORE...SHORT WAVES ROTATING AROUND THE CUTOFF AND OVER THE RIDGE POSE A SIGNIFICANT THUNDERSTORM TRIGGER MECHANISM TO THE FORECAST AREA AND I DONT THINK WE CAN TIME THOSE WITH ANY CERTAINTY THAT FAR OUT. TEMPERATURES STAY ABOVE NORMAL AS WELL...WITH SURFACE THERMAL TROUGH RE-BUILDING INTO OREGON. VERY LITTLE CHANGE TO CURRENT FORECASTS. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...NONE. OR...NONE. && DISCUSSION........LC PREV SHORT TERM...GS PREV LONG TERM....TB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 530 AM MDT SAT JUN 26 2004 IDZ011>016-028>030-ORZ061>064-271200- 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) SAT JUN 26 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...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
1020 PM MDT SAT JUN 26 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0840 PM HAIL 8 S MCCALL 44.80N 116.11W
06/26/2004 1.00 INCH VALLEY ID TRAINED SPOTTER
0855 PM TSTM WND DMG MARSING 43.55N 116.81W
06/26/2004 OWYHEE ID NWS EMPLOYEE
DAMAGED SIDING ON HOUSE. TREE LIMBS DOWN.
0915 PM TSTM WND GST CALDWELL 43.66N 116.67W
06/26/2004 44 MPH CANYON ID OFFICIAL NWS OBS
0920 PM TSTM WND DMG FRUITLAND 44.02N 116.92W
06/26/2004 PAYETTE ID TRAINED SPOTTER
TREE BRANCHES DOWN...DAMAGED FENCE.
0928 PM HAIL GARDEN VALLEY 44.10N 115.96W
06/26/2004 0.25 INCH BOISE ID TRAINED SPOTTER
0931 PM TSTM WND GST ONTARIO 44.02N 116.97W
06/26/2004 51 MPH MALHEUR OR OFFICIAL NWS OBS
&&The Boise radar (KCBX), 164 km away, was scanning. The volume nearest the first event began at 07:10 UTC.
1 thunderstorm wind. Local standard time, as filed.
Down burst winds from a severe thunderstorm blew down several 100 ft tall Pine trees one of which cut a single wide mobile home in half.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2004Every state in 2004This day in weather historyWarnings in Idaho, 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: 5410222.