1 hail, 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 Jul 22, 12:50 PM MST, 4 hours 10 minutes earlier.
SOUTHWEST IDAHO/SOUTHEAST OREGON AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE IDAHO 150 PM MDT MON JUL 22 2002 THETA E RIDGE ARCING FROM AROUND SLC TOWARDS TWF THEN BNO THIS AFTERNOON AND EVENING FOR MOIST (ABOVE 600 MBS) UNSTABLE AIRMASS. MOST MOIST, 1-INCH PRECIP-WATER, PLUME LINGERS IN WRN UTAH INTO S-CENTRAL IDAHO THRU THIS EVENING. FCST SOUNDINGS SHOW DRY LOW LAYERS FOR INVERTED-VEE PROFILE, FAVORING GUSTY WINDS, ALTHOUGH SOME MOISTENING IS FORECAST BY THE MESOETA BY MIDNIGHT WITH THUNDERSTORMS ACROSS THE IDAHO MOUNTAINS. UPPER LOW OFF CALIF IS SENDING WEAKENING BUT ACTIVE SHORTWAVES INTO THE CWFA MOST RECENTLY ABOUT 25KTS FROM THE SSW TO NNE. MODELS SEEM SLOW AND NOT WEAKENING ENOUGH IN TAKING THE 1ST WAVE THRU CENTRAL ID EARLY THIS AFTERNOON...AND SEEM UNDERDONE ON IDENTIFYING THE 2ND WAVE IN WRN NV APPROACHING SRN ZONES FOR TS THIS AFTERNOON. EXPECT ISOLD, APCHG SCT, TS IN 1 PW ZONE IN SOUTH CENTRAL ID AND APCHG SCT IN HARNEY/MALHEUR COUNTIES, CLOSEST TO WRN NV SHORTWAVE MOVING N INTO SE OREGON, EARLY THIS EVENING. THIRD SHORTWAVE SEEN IN WATER VAPOR 35N 125W IS ALSO IN THE AREA OF 60+ KT SPEED MAX ON THE EAST SIDE OF THE UPPER LOW AND IS EXPECTED INTO SE OREGON IN THE WEE HOURS...SO WILL HAVE NOCTURNAL TS A POSSIBILITY WITH UPPER SUPPORT TONIGHT. UPPER LOW OPENS UP TUESDAY NIGHT AND WED AS UPPER SPEED MAX SHIFTS ACROSS SRN ID FOR WED. NOCTURNAL TS AGAIN POSSIBLE. UPPER TROF THEN LINGERS OVER THE NW THURSDAY THEN SLOWLY MOVES INTO S-CENTRAL ID FRIDAY. SOME MORE STABLE AIR IS FCST TO MOVE IN FROM THE S WED AND THURS. PLAN ON GOING WITH 12Z AVN FOR BETTER POSSIBILITY FOR TS NORTH ON WEDNESDAY THROUGH THURSDAY, THEN CLEARING IN OREGON SIDE FRIDAY AND IDAHO PORTION FRIDAY EVENING. FOR THE EXTENDED, SLIGHTLY COOLER NW TO W FLOW ALOFT MOVES IN THIS WEEKEND AS THERMALLY INDUCED PRES TROF SHIFTS E FRIDAY EVENING AS IN CURRENT EXTENDED. 00Z GLOBAL RUN SHOWS UPPER RIDGE AND THERMAL PRES TROF REBUILDING MONDAY AND WILL TREND WARMER FOR DAY 7/MONDAY. .BOI...FIRE WEATHER WATCH REST OF THIS AFTERNOON AND TONIGHT FOR MUCH OF SE OREGON AND S OF THE SNAKE RIVER IN SW ID...ZONES 636B, 637 AND SOUTH OF THE SNAKE RIVER IN 408. SEE RFW/FWF BOISE FIRE WEATHER PRODUCTS FOR DETAILS. MILLS
The Boise radar (KCBX), 152 km away, was scanning. The volume nearest the first event began at 00:00 UTC.
1 hail. Local standard time, as filed.
A very warm, moist and unstable airmass allowed afternoon thunderstorms to intensify as they marched northeastward across Malheur County. One thunderstorm dropped hail that measured up to 3/4 inch in diameter just south of Burns Junction.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2002Every state in 2002This day in weather historyWarnings in Oregon, July 2002
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: 5309840.