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 Sep 13, 10:15 AM MST, 4 hours 15 minutes earlier.
AZZ020>028-CAZ030>033-132245- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 1015 AM MST THU SEP 13 2001 .SYNOPSIS... SOUTHERLY WINDS ALOFT WILL CONTINUE TO BRING INCREASING TROPICAL MOISTURE INTO ARIZONA WITH A CHANCE FOR SHOWERS AND THUNDERSTORMS THROUGH EARLY NEXT WEEK. THE CHANCE FOR SHOWERS WILL SPREAD INTO SOUTHEAST CALIFORNIA AND FAR SOUTHWEST ARIZONA LATE FRIDAY AND THE WEEKEND AS MOISTURE REMNANTS FROM TROPICAL STORM IVO MOVE INTO THE AREA. SOME DRYING FROM THE WEST IS EXPECTED IN SOUTHEAST CALIFORNIA BY MONDAY...THEN EAST INTO SOUTH CENTRAL ARIZONA BY TUESDAY. .DISCUSSION... INTERESTING WEATHER SHAPING UP FOR SOUTH CENTRAL AZ THE NEXT FEW DAYS. IN SHORT TERM...CONVECTIVE ACTIVITY ALREADY OCCURRING THIS MORNING ALONG A N-S LINE EXTENDING FROM NEAR AZ/UT BORDER WEST OF PAGE SOUTH TO NEAR ORGAN PIPE NM. ACTIVITY IS RATHER WEAK ATTM...WITH ONLY LIGHT SHOWERS OCCURRING. STEERING FLOW IS FROM THE SOUTHWEST TODAY...SO THE AREA OF SHOWERS WILL MOVE TOWARD THE NORTHEAST. BUT HOW WILL IT EVOLVE DURING THE DAY? BEST GUESS IS...SHOULD SEE SOME INCREASE IN SHOWER/STORM INTENSITY TODAY...WITH SCATTERED SHOWERS AND A FEW THUNDERSTORMS OVER MUCH OF SOUTH CENTRAL AZ TODAY. SOME DYNAMIC SUPPORT APPEARS TO BE PRESENT...AS CENTRAL AND EASTERN PORTION OF THE CWA WILL BE IN RIGHT REAR QUAD AREA OF 250 MB JET MAX CURRNTLY PROPAGATING ACROSS SOUTHERN NV. ATMOSPHERE CONTINUES TO MOISTEN OVER S-CNTRL AZ...WITH P-WATER AT 1.5 INCHES ON MORNING PHX SOUNDING. 700-500 MB LAYER QUITE MOIST ...WITH MUCH DRIER AIR ABOVE...AT LEAST FOR NOW. SFC-700 MB MEAN MIXING RATIO NEAR 10 G/KG...WITH DEW POINTS OF 7-9C. NOTED THAT SURGE SIGNAL APPEARED EARLIER THIS MORNING ON YUMA VWP...WITH SOUTH WIND BRIEFLY REACHING 35 KT AT 3KFT AROUND 8 AM. AS OF 17Z...20-25KT SOUTH WINDS THRU LOWEST 8000 FT. SFC DEW POINTS IN THE 60S OVER S-CNTRL AZ ...WITH SOUTHERN AZ LOCATIONS SHOWING 24 HR DEW POINT CHANGES OF +5 TO +10 DEGREES. DEGREE OF INSTABILITY SHOULD INCREASE DUE TO SURFACE HEATING...WITH TEMPS AT MOST SITES LIKELY TO REACH OR EXCEED CLIMO FOR MID SEPTEMBER ...EXCEPT OVER WRN MARICOPA COUNTY WHERE EXTENSIVE CLOUD COVER WILL INHIBIT WARMUP. OTHER THAN CLOUD COVER...A COUPLE OTHER MITIGATING FACTORS EXIST...RATHER WARM IN MID-LEVELS...WITH -5 TO -6C AT 500 MB LVL...ALSO DECREASING LOW LVL CONVERGENCE FORECAST OVER SCNTRL AZ AS DAY PROGRESSES. STILL...WENT AHEAD AND UPDATED FCST EARLIER THIS MORNING TO GO WITH AREAL COVERAGES RATHER THAN CHANCE WORDING...AND BUMPED POPS A BIT OVER MUCH OF MARICOPA AND NORTHERN PINAL COUNTIES...TODAY. NO MATTER HOW TDY PANS OUT...STILL APPEARS THAT MORE SIGNIFICANT PRECIP POSSIBILITY WILL EXIST IN FRIDAY NIGHT-SATURDAY NIGHT TIMEFRAME...AS MIDSHIFT FORECASTER ALLUDED TO IN PREVIOUS AFD. DG .PSR...NONE.
AZZ022>024-027-028-140200-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PHOENIX AZ
1156 AM MST THU SEP 13 2001
...CHANCE FOR ISOLATED STRONG THUNDERSTORMS OVER SOUTH-CENTRAL
ARIZONA THIS AFTERNOON AND EVENING...
COUNTIES IN THE RISK AREA INCLUDE:
IN ARIZONA...MARICOPA...NORTHERN PINAL...SOUTHERN GILA...
THE PRIMARY HAZARDOUS WEATHER RISKS INCLUDE:
WINDS GUSTING IN EXCESS OF 40 MPH AND LOCALLY HEAVY RAINFALL.
OTHER THREATS INCLUDE: DENSE BLOWING DUST AND INTENSE CLOUD TO GROUND
LIGHTNING.
AREAL COVERAGE OF THUNDERSTORMS IS EXPECTED TO BE GREATEST OVER THE
SOUTH CENTRAL DESERT...INCLUDING THE GREATER PHOENIX METROPOLITAN
AREA...THIS AFTERNOON. INDIVIDUAL STORMS WILL MOVE TOWARD THE
NORTHEAST AT 15 MPH. SPOTTER ACTIVATION MAY BE NECESSARY.
DGThe Phoenix radar (KIWA), 36 km away, was scanning. The volume nearest the first event began at 21:29 UTC.
1 thunderstorm wind. Local standard time, as filed.
About 1,000 customers were left without power after strong winds knocked down six power poles on the Gila River Indian Community.
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, September 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: 5267493.