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 Phoenix, AZ wrote its last area forecast discussion before the first event at Aug 7, 3:10 PM MST, 2 hours 15 minutes earlier.
AZZ020>028-CAZ030>033-080545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 310 PM MST TUE AUG 7 2001 .SYNOPSIS... A STRONG WEATHER DISTURBANCE WILL BECOME NEARLY STATIONARY ACROSS FAR EASTERN ARIZONA THE NEXT COUPLE OF DAYS. THIS SYSTEM WILL HELP TO TRIGGER SHOWERS AND THUNDERSTORMS OVER MAINLY SOUTH-CENTRAL ARIZONA THROUGH WEDNESDAY NIGHT. SOUTHWEST ARIZONA AND FAR SOUTHEAST CALIFORNIA WILL REMAIN RELATIVELY DRY. AFTER THIS...THERE WILL BE A TEMPORARY LULL IN THE THUNDERSTORM THREAT ON THURSDAY BEFORE THE UPPER HIGH SHIFTS BACK TO OUR NORTH. THIS SHIFT WILL BRING RENEWED CHANCES OF THUNDERSTORMS OVER SOUTH-CENTRAL ARIZONA BY THE END OF THE WEEK. .DISCUSSION... FAIRLY ACTIVE DAY ACROSS MUCH OF CWFA...WITH ISOLATED STORMS EVEN RUMBLING ACROSS SE CA ZONES. DESERT SFC TEMP/DEWPOINT DEPRESSIONS IN THE 40 TO 60 DEG F RANGE STILL GIVING THE SOUNDINGS AN INVERTED V LOOK...ALTHOUGH KIWA RADAR ALSO ESTIMATING SOME ISOLATED HEFTY RAINFALL AMOUNTS. CHECK OF 18Z MESO-ETA SHOWS WE ARE UNDERGOING SOME DYNAMICAL INFLUENCE FROM VORT MAX MOVING IN FROM THE 4 CORNERS AREA. AND...WITH STEERING FLOWS OUT OF THE ENE...BELIEVE SOUTH-CENTRAL DESERTS SHOULD CONTINUE WITH A THREAT OF STORMS WELL INTO THE NIGHT. AFTER TONIGHT...MODELS SETTLE VORT TROUGH ALONG THE AZ/NM BORDER. THIS POSITION WILL PROBABLY KEEP MUCH OF ERN CWFA UNDER THE GUN FOR STORMS THRU TOMORROW. PRESENCE OF DEBRIS CLOUDS FROM TONIGHTS TSTM ACTIVITY COULD SERVE TO PUT A DAMPER ON RENEWED STORMS WEDNESDAY. BECAUSE OF THIS...WILL JUST KEEP LOW GRADE CHANCE POPS IN PLACE INTO TOMORROW NIGHT FOR MARICOPA COUNTY EWD. BY THURSDAY...AZ/NM VORT TROF GETS NUDGED FURTHER TO THE E. THIS SHOULD RESULT IN A TEMPORARY LULL IN STORMS FOR THURSDAY...EXCEPT OVER HIGHER TERRAIN OF ZONE 24. BELIEVE WRN PORTION OF CWFA WILL SEE LESS ACTION THROUGH TOMORROW... WITH HIGH PRESSURE RIGHT OVERHEAD PUTTING A CAP ON CONVECTION. TEMPS OBVIOUSLY WILL BE COOLER NEXT COUPLE OF DAYS IN WAKE OF TSTM ACTIVITY. TURNING TO THE EXTENDED...MEDIUM RANGE MODELS DISAGREE SOMEWHAT IN PLACEMENT OF UPPER RIDGE. WILL GO MORE IN LINE WITH NOGAPS/UKMET WHICH PUTS HIGH BACK INTO FAVORABLE POSITION ALONG UT BORDER. SO... WILL OPT TO MAINTAIN CHANCE POPS SOUTH-CENTRAL ARIZONA DURING THE EXTENDED...KEEPING WRN CWFA DRY. ESTLE
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Severe thunderstorms moving west across south central Yuma County blew down four electric power poles between Tacna and Roll. A trailer was reported to be damaged in Roll.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2001Every state in 2001This day in weather historyWarnings in Arizona, August 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: 5262348.