1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 Pocatello, ID wrote its last area forecast discussion before the first event at Jul 17, 1:40 PM MST, 5 hours 50 minutes earlier.
SOUTHEAST IDAHO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID 240 PM MDT WED JUL 17 2002 SHOWERS/TSTORMS ALREADY BEGINNING TO FIRE CENTRL MTNS AND NEAR UPPER SNAKE HIGHLANDS PER VIS SAT IMAGERY AND KSFX 88D...VERY LITTLE DEVELOPMENT ACROSS SNAKE PLAIN. BEST INSTABILITY CURRENTLY OVER CENTRL MTNS WITH A FINGER OF GOOD INSTABILITY PUSHING THROUGH SOUTHERN HIGHLANDS INTO MAGIC VALLEY AND LOWER SNAKE PLAIN. SINCE DVLPMNT SLOW OVER SNAKE PLAIN WILL HOLD THOSE ZONES ISOLATED THIS EVENING AND KEEP SCATTERED OVER MTN ZONES. TSTORMS SHOULD DISSIPATE AFTER SUNSET THO MESOETA KEEPS VERY SMALL PATCHES OF PRECIP OVER CWFA THROUGH THE NIGHT...ASSOC WITH WEAK S/WV AHEAD OF U/L LOW OFF CAL COAST. MOIST AND UNSTABLE ATMOS TO REMAIN ENTRENCHED OVER ERN IDAHO THROUGH FRI AS CWFA TRAPPED BETWEEN RIDGE TO EAST AND BUCKLING PACIFIC FLOW TO THE WEST. OPEN WAVE U/L LOW NEAR CENTRAL CAL COAST PROGGED TO SLOWLY SWING NORTHEAST THROUGH THU...POSITIONED NEAR RENO BY THU AFTN. THIS SYSTEM PROGGED TO PULL IN ADDITIONAL LOW-MID LEVEL MSTR OVER CWFA BY MID AFTN THU WITH INCREASING CHANCES OF PRECIP AFTN AND EVE DUE TO SLIGHTLY HIGHER PW. ONLY LIMITING FACTOR FOR THU WILL BE CLOUD COVER WHICH MAY INHIBIT DIURNAL DEVELOPMENT. U/L WAVE SLIDES INTO TOP OF RIDGE BY FRI FLATTENING FLOW ACROSS CWFA AND COOLING THICKNESSES A BIT. MINOR S/WVS MAY STILL TRIGGER AFTN/EVE DEVELOPMENT...BUT FOCUS LOOKS TO BE MAINLY OVER MTNS ONCE AGAIN. THIS TREND CONTINUES INTO SAT. IN THE EXTENDED...DESPITE DIFS IN LONG RANGE MODELS...GENERAL TREND SHOWS AN U/L HIGH CENTERED IN NV. THIS SHOULD RESULT IN A BIT MORE NORTHWESTERLY FLOW ACROSS IDAHO INDICATING A DRIER REGIME. THIS CURRENTLY REFLECTED IN FCST PACKAGE SO WILL JUST ADD WED TO THE MIX AND LEAVE BROADBRUSHED. DMH .KSFX...OPERATIONAL...VCP 21 BYI 62/89/60/88 24422 .PIH...NONE. PIH WW 057/089 057/087 055 10244
The Pocatello radar (KSFX), 47 km away, was scanning. The volume nearest the first event began at 02:27 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain caused a flash flood in the town of Crystal. Rattlesnake Creek exceeded its banks and flooded Upper Road. Clifton Creek exceeded its banks and flooded Myler Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2002Every state in 2002This day in weather historyWarnings in Idaho, 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: 5307560.