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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Jul 9, 9:01 AM MST, 3 hours 44 minutes earlier.
UTAH AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 930 AM MDT MON JUL 9 2001 ...UPDATED FOR COMMENTS OF EASTERLY WAVE IN NORTHERN MEX... SYNOPSIS...A VERY MOIST AIRMASS CONTINUES OVER UTAH. SHOWERS AND THUNDERSTORMS WITH SOME AREAS OF HEAVY RAIN WILL RESULT THROUGH TONIGHT. THE AIRMASS WILL SLOWLY DRY AND WARM BY LATE IN THE WEEK. DISCUSSION...HI PRESSURE ALOFT OVER OK PANHANDLE WITH OFF SHORE LOW OFF CA COAST. THIS LEAVES INTERMOUNTAIN REGION UNDER MOIST SOUTHERLY FLOW...WITH WAVES RIPPLING AROUND EACH ABOVE MENTIONED CIRCULATION PASSING NORTHWARD THROUGH THE AREA. A SERIES OF EASTERLY WAVES OVER SOUTHERN TX AND NORTHERN MEX WILL ALSO POTENTIALLY AFFECT THE REGION LATE THIS AFTERNOON THROUGH TUESDAY. TODAY...SHORTWAVE ENTERING UTAH FROM THE SOUTHEAST SHOULD BE THE KICKER FOR CONVECTIVE DEVELOPMENT TODAY. THIS FEATURE WAS QUITE ACTIVE LATE YESTERDAY OVER NM. EXPECT FEATURE TO WORK ITS WAY INTO BOTH NORTHERN UT AND SOUTHWEST UT DURING THE AFTERNOON. CURRENTLY HAVE A LOT OF CLOUD COVER WHICH WOULD HINDER INTENSE CONVECTION AND YIELD LESS THREATENING DEVELOPMENT. WILL HAVE TO SEE WHAT CLEARING WE GET FOR AFTERNOON...AND WILL CONSIDER FLASH FLOOD WATCH IF CLEARING BECOMES IMMANENT AND START TO SEE DEVELOPMENT FORMING BEHIND SHORTWAVE IN SOUTHEAST UT. TONIGHT...UPPER LEVEL TROUGH AND WEAK 700 MB CIRCULATION OVER NV BECOME THE PLAYERS FOR THIS PERIOD. EXPECT ANOTHER ROUND OF POTENTIAL WIDESPREAD CONVECTION. NOTED THAT ETA HAS VERY IMPRESSIVE PRECIPITATION FIELD THROUGH THE 24 HOUR FORECAST PERIOD. EASTERLY WAVE OVER NORTHER MEX SHOULD MOVE INTO AZ DURING THE DAY AND INTO UT OVERNIGHT. THIS MAY IN FACT BE MORE INTERESTING THAN THE FEATURES OVER NV. TUESDAY...UPPER LEVEL TROUGH MOVES THROUGH. FLOW BECOMES WEST-NORTHWESTERLY AS THIS MOVES BY AND SHOULD BE ENOUGH TO SHUT DOWN ACTIVE WEATHER. QUESTION THAT COMES INTO PLAY IS TIMING OF TROUGH PASSAGE. IF IT COMES EARLY IN THE DAY DO NOT EXPECT MUCH WEATHER. IF IT COMES DURING THE AFTERNOON WEATHER WILL BE MORE ACTIVE THAN CURRENT FORECAST INDICATES. ETA HAS HIGHER CAPES AND LI AND STILL LEAVES STATE UNDER MOIST AIRMASS. AM LEANING TOWARD BEEFING UP FORECAST DURING THIS PERIOD OVER WESTERN UT. SLC 763 CDC 642 ZAFF .SLC...NONE.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Flash flooding hit the Tooele Valley, where near Grantsville 2 dirt roads became impassable as water 3 feet deep rushed over them, cutting off access to several homes. Two homes reported flooded basements there, with another basement flooded in Tooele.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2001Every state in 2001This day in weather historyWarnings in Utah, July 2001
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: 5275520.