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 Tucson, AZ wrote its last area forecast discussion before the first event at Jul 17, 3:00 PM MST, 4 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 300 PM MST SAT JUL 17 2004 SOUTHEAST ARIZONA FORECAST DISCUSSION .SYNOPSIS...HIGH PRESSURE ALOFT CENTERED OVER NEW MEXICO WILL ALLOW THE MOIST EAST TO SOUTHEAST FLOW TO CONTINUE THROUGH TONIGHT. THE RISK OF THUNDERSTORMS SHOULD DECREASE SOMEWHAT STARTING SUNDAY AND CONTINUING THROUGH AROUND THE MIDDLE OF THE WEEK AS THE HIGH CENTER MOVES SOUTH AND CUTS OFF SOME OF THE MOISTURE SUPPLY. THIS IN TURN WILL RESULT IN WARMER AFTERNOONS. A MORE MOIST AIR MASS IS EXPECTED BY THE END OF THE NEW WEEK AS THE HIGH SHIFTS BACK TO NEAR THE FOUR CORNERS REGION. && .DISCUSSION...RATHER BUSY THIS AFTERNOON WITH ONE CELL PRODUCING VERY HEAVY RAINFALL OVER PORTIONS OF THE SANTA CATALINAS WHICH PROMPTED A FLASH FLOOD WARNING FOR THE AREA. ELSEWHERE ACROSS THE REGION ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP. THE CENTER OF THE UPPER HIGH WHICH IS OVER NEW MEXICO AND WEST TEXAS IS PROGGED TO RETROGRADE TO A POSITION OVER EAST CENTRAL ARIZONA AND WEST CENTRAL NEW MEXICO ON SUNDAY. AS A RESULT...THIS WILL DIMINISH THE FLOW OF MOISTURE FROM THE SOUTH AND EAST. 700MB FLOW WILL BECOME MORE FROM THE NORTHWEST TO NORTH FOR SUNDAY THRU AROUND MID WEEK. BY THURSDAY THE FLOW WILL BEGIN TO SHIFT TO THE EAST TO SOUTHEAST AS THE UPPER HIGH BEGINS TO MOVE BACK TO THE NORTH. THEREFORE...DID NOT MAKE ANY BIG CHANGES TO THE POP GRIDS. GENERALLY LOOKING AT ISOLATED TO SCATTERED SHOWERS AND STORMS THROUGH LATE IN THE WEEK...THEN A SLIGHT UPSWING IN POP LATE IN THE WEEK AND INTO THE WEEKEND AS THE HIGH SHIFTS NORTH AND MORE MOISTURE IS ALLOWED TO FILTER BACK INTO THE REGION FROM THE SOUTHEAST. && .TWC WATCHES/WARNINGS/ADVISORIES...NONE. MOLLERE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TUCSON AZ 1200 PM MST SAT JUL 17 2004 AZZ019-029>035-180700- NORTHERN GREENLEE COUNTY-UPPER GILA RIVER VALLEY-COCHISE COUNTY-SOUTHEAST PINAL COUNTY-TUCSON METRO/MARANA/GREEN VALLEY-SANTA CRUZ COUNTY-TOHONO OODHAM NATION-WESTERN PIMA COUNTY- 1200 PM MST SAT JUL 17 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ARIZONA .DAY ONE...TODAY SYNOPSIS...THE ATMOSPHERE IS UNSTABLE TODAY WITH DIURNAL HEATING BEING THE PRIMARY MECHANISM FOR INITIATING THUNDERSTORMS. AREAS WITH CLOUD COVER IN THE MORNING WILL EXPERIENCE DEVELOPMENT LATER THAN THOSE UNDER SUNNY SKIES DURING THE MORNING. DISCUSSION...ORGANIZATION TO FOCUS CONVECTION OVER SOUTHEAST ARIZONA IS LACKING TODAY. THE MOST NOTABLE FEATURE IS THE CIRCULATION IN SONORA ASSOCIATED WITH THE MCS LAST NIGHT. THIS CIRCULATION CAN BE SEEN ON SATELLITE IMAGERY AS IT MOVES TO THE WEST-NORTHWEST. THE ASSOCIATED CLOUD COVER OVER CENTRAL AND EASTERN PIMA...PINAL AND SANTA CRUZ COUNTIES IS KEEPING TEMPERATURES A COUPLE OF DEGREES LOWER THAN YESTERDAY. SITES OUTSIDE OF THIS CLOUD COVER... COCHISE...WESTERN PIMA AND GRAHAM COUNTIES ARE ABOUT THE SAME TEMPERATURE AS YESTERDAY. GIVEN THESE CONDITIONS EXPECT STORMS TO FORM IN THESE SUNNIER LOCATIONS FIRST. THE MORNING UPPER AIR DATA HAS STRONGER WINDS THAN YESTERDAY FROM 500 MB AND UP. THIS CHANGE SHOULD KEEP THE STORMS MOVE FASTER TODAY AND SUPPORT HAIL GROWTH DUE TO INCREASED VERTICAL SHEAR. MAIN THREATS FROM SEVERE WEATHER IN ORDER OF PRIORITY ARE 1 - HAIL... 2 - STRONG WIND AND 3 - HEAVY RAINFALL. AT THIS TIME...EXPECT ONLY A COUPLE OF SEVERE STORMS WITHIN THE SCATTERED THUNDERSTORMS COVERAGE CURRENTLY FORECAST. HIGH PRECIPITABLE WATER VALUES MAKE FLASH FLOODING A POSSIBILITY... HOWEVER DO NOT EXPECT ANY WIDESPREAD PROBLEMS IN THIS AREA. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THE CENTER OF THE UPPER LEVEL HIGH IS IN THE PROCESS OF RETROGRADING TO A POSITION OVER SOUTHERN ARIZONA AND NEW MEXICO BY MONDAY NIGHT. DRIER AIR WHICH IS CURRENTLY LOCATED OVER NEW MEXICO AND TEXAS WILL SLOWLY MOVE INTO EASTERN ARIZONA LATE SUNDAY...AND PROSPECTS FOR SEVERE AFTERNOON THUNDERSTORMS IS EXPECTED TO DECREASE. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
A trained spotter reported estimated wind gusts of 60 mph (52 knots) near Houghton Road and Interstate 10. There were also reports of large trees blown down in the same area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2004Every state in 2004This day in weather historyWarnings in Arizona, July 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: 5415718.