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 30, 3:25 PM MST, 4 hours 20 minutes earlier.
AZZ020>028-CAZ030>033-310545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 325 PM MST THU AUG 30 2001 .SYNOPSIS... AFTER A BRIEF BOUT WITH ISOLATED THUNDERSTORMS ACROSS SOUTH-CENTRAL ARIZONA TONIGHT...SHORT-TERM DRYING IS ANTICIPATED OVER THE REGION FRIDAY INTO SATURDAY. HOWEVER...AN INCREASINGLY MOIST SOUTHWEST FLOW WILL RETURN TO MOST OF SOUTHWEST AND SOUTH-CENTRAL ARIZONA DURING THE HOLIDAY WEEKEND. A COUPLE OF UPPER LEVEL DISTURBANCES INTERACTING WITH THIS MOISTURE WILL YIELD BETTER CHANCES OF THUNDERSTORMS THE LATTER HALF OF THE HOLIDAY WEEKEND. MEANWHILE...SOUTHEAST CALIFORNIA SHOULD REMAIN RELATIVELY DRY THROUGH THE LABOR DAY WEEKEND. AFTER THAT...DRIER WEATHER SHOULD RETURN TO ALL OF THE FORECAST AREA BY THE MIDDLE OF NEXT WEEK. .DISCUSSION... STORMS FORMING ABOUT THE SAME PLACE AS 24 HOURS AGO PER VISIBLE SATELLITE PIX AND RADAR IMAGERY. ONE DIFFERENCE NOTED IS THE CU FIELD THAT NOW OVERLAYS MARICOPA COUNTY EWD. SOME BUILDUPS TRYING TO FORM TO S OF PHX...WHERE CONVECTIVE TEMPS ARE JUST NOW BEING REACHED AND CAPE IS BEING REALIZED. MORNING ANALYSIS AT 300/250MB ALSO SHOWED A BELT OF STRONGER WINDS JUST TO OUR S...PUTTING ERN PORTION OF CWFA ON CYCLONIC SIDE OF JET FOR POTENTIAL DYNAMICS. BELIEVE WE MAY HAVE A SLIGHTLY UPSCALE VERSION OF LAST NIGHTS STORMS...COVERING AREAS A BIT FURTHER N AND W. OPTED TO GIVE ISOLATED/SLIGHT CHANCE POPS MARICOPA COUNTY EWD THIS EVENING. A COUPLE OF THE STORMS COULD GET NASTY...ESPECIALLY S AND E OF PHX. BY TOMORROW...MODELS GENERALLY AGREE THAT WE WILL SEE SOME TEMPORARY DRYING...SO WILL KEEP ENTIRE CWFA PRECIP-FREE FRIDAY INTO SATURDAY. TEMPS WILL NOT SHOW MUCH DAY-TO-DAY VARIATION INTO THE WEEKEND EITHER...WITH MAX READINGS EXPECTED TO BE NEAR CLIMO. AFTER SATURDAY...THE WEATHER PICTURE GETS A BIT MUDDLED...WITH LARGE DIFFERENCES IN MODEL SOLUTIONS BETWEEN THE ETA AND AVN. ETA HAS MUCH LESS TROUGHING ALONG THE W COAST OVER THE HOLIDAY WEEKEND...WHICH ALLOWS THE REMNANTS OF FLOSSIE TO STAY WAY TO OUR S. HOWEVER...WITH MORE TROUGHING ADVERTIZED BY AVN...SOUTH-SOUTHWEST FLOW IS FORECAST TO MOVE A STRING OF VORT MAXES RIGHT UP INTO THE STATE AFTER SAT. IF THIS HAPPENS...COULD TURN VERY INTERESTING. BLASTUP CONSENSUS WAS GENERALLY TO FAVOR MORE AGRESSIVE AVN SOLUTION. SO...HAVE INTRODUCED TSTM CHANCES SUNDAY AND LABOR DAY FROM MARICOPA COUNTY EWD. AFTER THIS...MRF DEVELOPS A STRONG W COAST TROUGH...WHICH SHOULD BRING DRYING TO THE ENTIRE PHX CWFA. WILL PLAY IT THAT WAY FOR NOW. ESTLE
AZZ023-024-028-310400-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
524 PM MST THU AUG 30 2001
...ISOLATED SEVERE THUNDERSTORMS POSSIBLE OVER A PORTION OF SOUTH-
CENTRAL ARIZONA THIS EVENING...
COUNTIES IN THE RISK AREA INCLUDE:
IN ARIZONA...EASTERN MARICOPA AND NORTHWEST PINAL...
THE PRIMARY HAZARDOUS WEATHER RISKS INCLUDE:
LOCALLY HEAVY RAINFALL AND WINDS GUSTING 40 TO 50 MPH.
OTHER THREATS INCLUDE: DENSE BLOWING DUST...HAIL...AND CLOUD
TO GROUND LIGHTNING.
STORMS WILL BE MOST NUMEROUS OVER NORTHERN PINAL COUNTY EARLY THIS
EVENING. INDIVIDUAL STORMS WILL MOVE TOWARD THE EAST AND NORTHEAST AT
10 MPH. SPOTTER ACTIVATION MAY BE NECESSARY THIS EVENING.
DGThe Phoenix radar (KIWA), 30 km away, was scanning. The volume nearest the first event began at 02:45 UTC.
1 thunderstorm wind. Local standard time, as filed.
Severe thunderstorm wind gusts blew down trees and power lines. Small hail also accompanied this storm as it moved through Tempe and Scottsdale.
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: 5264212.