Several strong thunderstorms developed to the southeast of the greater Phoenix area during the evening hours on July 5. The storms produced damaging microburst winds and dense blowing dust that affected portions of central and western Pinal county.
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 episode as NWS PSR wrote it up.
Several strong thunderstorms developed to the southeast of the greater Phoenix area during the evening hours on July 5. The storms produced damaging microburst winds and dense blowing dust that affected portions of central and western Pinal county. Gusty winds estimated to be in excess of 50 knots uprooted trees, knocked down power poles and blew a semi truck off of the interstate.
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 Jul 5, 4:51 PM MST, 2 hours 49 minutes earlier.
AREA FORECAST DISCUSSION...UPDATE NATIONAL WEATHER SERVICE PHOENIX AZ 451 PM MST TUE JUL 5 2011 .UPDATE...TO AVIATION SECTION. && .SYNOPSIS... MOISTURE WILL CONTINUE MOVING OVER ARIZONA AND SOUTHEAST CALIFORNIA FROM THE SOUTHEAST THROUGH WEDNESDAY IN THE CLOCKWISE FLOW AROUND HIGH PRESSURE ALOFT EAST OF THE 4 CORNERS. THIS MEANS A CONTINUED CHANCE OF MAINLY LATE AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS AND DESERT BLOWING DUST MOSTLY OVER SOUTH-CENTRAL ARIZONA INCLUDING THE GREATER PHOENIX AREA. DRIER AIR IS EXPECTED TO SLOWLY MOVE OVER SOUTHEAST CALIFORNIA AND LIMIT THUNDERSTORMS TO EAST OF THE LOWER COLORADO RIVER VALLEY ACROSS SOUTH-CENTRAL ARIZONA THURSDAY THROUGH MONDAY. SLIGHTLY WARMER WEATHER IS EXPECTED WEDNESDAY AND THURSDAY AS THE AIRMASS BECOMES SLIGHTLY DRIER. && .DISCUSSION... THERE WERE ISOLATED SHOWERS AND THUNDERSTORMS OVER JOSHUA TREE NATIONAL PARK...SOUTHERN GILA COUNTY...AND FAR NORTHEAST PINAL COUNTY THIS AFTERNOON. THESE STORMS WERE GENERALLY DEVELOPING EARLIER THAN YESTERDAY. THE REST OF THE AREA WAS SUNNY WITH SOME CUMULUS CLOUDS. TEMPERATURES WERE GENERALLY 2 TO 4 DEGREES WARMER COMPARED WITH THE SAME TIME YESTERDAY. WIND WAS GENERALLY FROM THE SOUTHWEST AND WEST 10 TO 20 MPH IN SOUTH-CENTRAL ARIZONA INCLUDING THE GREATER PHOENIX AREA AND LIGHT FROM THE SOUTH AND EAST IN FAR SOUTHWEST ARIZONA AND SOUTHEAST CALIFORNIA INCLUDING YUMA AND THE EL CENTRO-IMPERIAL AREA. HIGH PRESSURE ALOFT CONTINUES TO BE CENTERED NEAR OR JUST TO THE EAST OF THE 4 CORNERS. A CLOCKWISE FLOW OF AIR AROUND THE HIGH PRESSURE SYSTEM CONTINUES TO BRING MOISTURE ACROSS OUR AREA. A WEAK LOW PRESSURE WAVE IS MOVING AROUND THE HIGH PRESSURE CENTER WITH BETTER STEERING FLOW AND SHEAR. WITH A MOIST AND QUITE UNSTABLE AIRMASS...THERE IS A SOMEWHAT BETTER CHANCE OF SHOWERS AND THUNDERSTORMS AT LEAST IN THE EASTERN AND SOUTHEAST PORTION OF THE GREATER PHOENIX AREA THIS EVENING AND AGAIN WEDNESDAY EVENING. SCATTERED SHOWERS AND THUNDERSTORMS OVER THE HIGHER TERRAIN EAST OF THE GREATER PHOENIX AREA ARE EXPECTED TO DEVELOP INTO THE SOUTH-CENTRAL ARIZONA DESERT AREAS WITH A POSSIBILITY OF A DUST STORM MAINLY SOUTH AND SOUTHEAST OF PHOENIX LATE THIS AFTERNOON AND THIS EVENING AND AGAIN LATE WEDNESDAY AFTERNOON AND EVENING. THE AIRMASS IS EXPECTED TO GRADUALLY BECOME DRIER IN SOUTHEAST CALIFORNIA AND THE LOWER COLORADO RIVER VALLEY. THUS...THERE IS GENERALLY ONLY A SLIGHT CHANCE OF MAINLY NIGHTTIME SHOWERS AND THUNDERSTORMS IN THE SOUTHEAST CALIFORNIA DESERT AREAS THROUGH WEDNESDAY...BUT MAINLY IN THE AFTERNOON AND EVENING IN JOSHUA TREE NATIONAL PARK. THE THUNDERSTORMS ARE THEN EXPECTED TO BE LIMITED TO EAST OF THE LOWER COLORADO RIVER VALLEY ACROSS SOUTH-CENTRAL ARIZONA THURSDAY THROUGH TUESDAY. SLIGHTLY WARMER WEATHER IS EXPECTED WEDNESDAY AND THURSDAY AS THE AIRMASS BECOMES SLIGHTLY DRIER. PREVIOUS DISCUSSION... TODAY...THUNDERSTORMS OVER OUR FORECAST AREA ENDED A FEW HOURS AGO AND NOW THERE IS JUST A LOT OF DEBRIS CLOUDINESS AROUND...KEEPING TEMPS UP. 00Z MODEL FORECAST SOUNDINGS SHOWED DEEPENING MIXED LAYERS FOR TODAY BUT THEY DID NOT REFLECT THE EFFECTS THE EVENING OUTFLOWS OVER THE SOUTH-CENTRAL DESERTS...INCLUDING PHOENIX. 06Z NAM PICKED UP ON THIS BUT STILL SHOWED SOME POTENTIAL FOR LATE THIS AFTERNOON/EVENING...BUT WITH THE USUAL CIN. SIMILAR LOOKING FORECAST SOUNDINGS APPEAR OVER SOUTHWEST ARIZONA AND SOUTHEAST CALIFORNIA. NEITHER GFS NOR NAM DEPICT ANY PROLONGED COHERENT UPPER DIFFLUENCE/DIVERGENCE OVER OUR AREA FOR TODAY WITH THE ANTICYCLONE AT UPPER LEVELS CENTERED NEAR THE 4 CORNERS. SUCH FEATURES ARE DEPICTED FURTHER SOUTH OVER NORTHWEST MEXICO AS WELL AS TO THE NORTHWEST OF OUR CALIFORNIA ZONES. HOWEVER...AN INVERTED TROUGH NEAR THE BIG BEND IS SLOWLY MOVING WESTWARD AND MAY AID DEVELOPMENT OF CONVECTION OUTSIDE OF OUR FORECAST AREA WHICH COULD PROPAGATE INTO SOUTH-CENTRAL ARIZONA. THIS SCENARIO IS INDICATED IN THE NAM QPF...LESS SO IN THE GFS. THE LOCAL WRF RUN FROM 18Z SHOWS A GOOD SWATH OF QPF ORIGINATING OVER/NEAR ZONE 24 AND MOVING WESTWARD BEFORE DISSIPATING OVER IMPERIAL COUNTY. IT REMAINS TO BE SEEN HOW MUCH ACTIVITY THERE WILL BE TODAY OVER SOUTHEAST ARIZONA DUE TO LAST NIGHTS STORMS. HOWEVER...STEERING FLOW LOOKS LIKE IT WILL BE MORE EASTERLY SO THE WHITE MOUNTAINS...EAST RIM...AND GRAHAM COUNTY WILL BE MORE OF A PLAYER. STORM PROPAGATION/OUTFLOWS WILL ALSO BE NECESSARY OVER SOUTHWEST ARIZONA AND SOUTHEAST CALIFORNIA...EXCEPT FOR JOSHUA TREE NATIONAL PARK WHERE THERE WILL BE A BETTER CHANCE OF STORMS INITIATING OVER THE MOUNTAINS. WEDNESDAY...LOOKS SIMILAR OVERALL EXCEPT THE INVERTED TROUGH SHOULD BE FURTHER WESTWARD AND LESS OF A PLAYER. HOWEVER...THAT WAS WHAT WAS SUPPOSED TO HAPPEN WITH THE ONE NOW OVER NEVADA BUT IT MOVED SLOWER THAN ADVERTISED AND TOOK A NORTHERLY TURN. THURSDAY...STEERING FLOW ALOFT BECOMES MORE SOUTHERLY AS THE HIGH DRIFTS EASTWARD IN RESPONSE TO A TROUGH TO THE NORTHWEST. LOWER LEVELS ARE MORE WESTERLY. THE GFS SHOWS A DECLINE IN MOISTURE OVER OUR AREA...MORE SO THAN THE ECWMF NOT SURPRISINGLY. MAINTAINED THE TREND FROM PREVIOUS SHIFTS OF SHOWING A SUBTLE DECLINE IN POPS...MORE NOTICEABLY OVER OUR WESTERN AREAS. FRIDAY THROUGH MONDAY...A COUPLE OF TROUGHS MOVE THROUGH THE NORTHWEST STATES HELPING TO KEEP DEEPER MOISTURE MAINLY EAST OF THE LOWER COLORADO RIVER VALLEY. HOWEVER...BROAD RIDGING OVER THE CENTRAL AND EASTERN STATES AND AT LEAST A REMNANT ANTICYCLONIC CIRCULATION OVER NEW MEXICO/CHIHUAHUA KEEPS THINGS FROM DRYING OUT. THE ECMWF CONTINUES TO BE MORE RELUCTANT TO DRY THINGS OUT AND DEPICTS SHORT WAVES IN THE WESTERLIES MOVING ACROSS OUR AREA EARLY NEXT WEEK. FROM A CLIMATOLOGICAL STANDPOINT...A GRADUAL DECLINE IN POPS IS MORE REALISTIC...THOUGH HANGING ON TO AT LEAST SLIGHT CHANCE...AND THIS IS REFLECTED IN THE FORECAST. BECAUSE THE LARGE HIGH DOES NOT GO VERY FAR...TEMPS DONT DROP AND WILL EVEN CREEP UP A BIT WITH LESS MOISTURE. && .AVIATION... SOUTH-CENTRAL ARIZONA INCLUDING KPHX AND KIWA AIRFIELDS... STORMS ARE PERCOLATING FROM NORTH-TO-EAST-TO-SOUTH OF PHOENIX LATE THIS AFTERNOON. THINKING THE BIGGEST THREAT RIGHT NOW WILL BE INCOMING OUTFLOW BOUNDARIES BETWEEN 03-05Z FROM THE EAST OR SOUTH. STORMS NEAR KTUS ARE STRONG ENOUGH TO PUSH GUSTY WINDS AND DUST UP TO KPHX LATER THIS EVENING. WEATHER WILL QUIET DOWN AFTER 07-08Z WITH LIGHT WINDS AND DISSIPATING CLOUDS INTO WEDNESDAY AFTERNOON. SOUTHEAST CALIFORNIA INCLUDING KIPL...AND KBLH AIRFIELDS... WILL BE WATCHING CONVECTION OVER NORTHERN BAJA AND PIMA AZ COUNTY THIS EVENING...BOTH OF WHICH COULD CAUSE GUSTY WINDS AND BLOWING DUST ACROSS SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA. STORMS ENCLOSING ON EL CENTRO BARE THE CLOSEST WATCH THROUGH 03Z...WITH THE WINDS FROM THE PIMA COUNTY STORMS BEING A CONCERN FROM 03-07Z. WEATHER WILL QUIET DOWN AFTER 07-08Z WITH LIGHT WINDS AND DISSIPATING CLOUDS INTO WEDNESDAY AFTERNOON. AVIATION DISCUSSION NOT UPDATED FOR AMENDED TAFS. && .FIRE WEATHER... THURSDAY THROUGH MONDAY... TYPICAL JULY PATTERN IS EXPECTED...BUT WITH SOME DRIER AIR OVER SOUTHWEST ARIZONA AND ESPECIALLY SOUTHEAST CALIFORNIA. NO SIGNIFICANT WIND IS EXPECTED ANY GIVEN DAY. HOWEVER...THUNDERSTORMS WILL BE AROUND MOSTLY IN SOUTH-CENTRAL ARIZONA AND MAINLY IN THE LATE AFTERNOONS AND EVENINGS WITH BRIEF PERIODS OF GUSTY OUTFLOW WINDS LIKELY WITH BLOWING DESERT DUST. MINIMUM HUMIDITY IN THE MID TO UPPER TEENS WITH FAIR TO GOOD OVERNIGHT RECOVERY IS EXPECTED. && .PSR WATCHES/WARNINGS/ADVISORIES... AZ...NONE. CA...NONE. && NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT WEATHER.GOV/PHOENIX DISCUSSION...ELLIS/AJ AVIATION...INIGUEZ FIRE WEATHER...CDEWEY
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 544 AM MST TUE JUL 5 2011 AZZ021>023-026>028-061245- WEST CENTRAL DESERTS-NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA- SOUTHWEST DESERTS-SOUTHWEST MARICOPA COUNTY- NORTHWEST AND NORTH CENTRAL PINAL COUNTY- 544 AM MST TUE JUL 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH-CENTRAL ARIZONA...SOUTHWEST ARIZONA AND WEST-CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT A MONSOON REGIME IS IN PLACE FOR A CHANCE OF THUNDERSTORM RELATED HAZARDS...MOST LIKELY IN THE EVENING. THESE INCLUDE VERY STRONG WINDS...BLOWING DUST...LOCALLY HEAVY RAIN...AND OF COURSE LIGHTNING. MARICOPA AND PINAL COUNTIES ARE MORE LIKELY TO EXPERIENCE THESE HAZARDS THAN YUMA AND LA PAZ COUNTIES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY LINGERING MOISTURE WILL MAINTAIN AT LEAST A SLIGHT CHANCE OF THUNDERSTORMS THROUGH MONDAY. SOMEWHAT LESS MOISTURE IS ANTICIPATED FRIDAY INTO EARLY NEXT WEEK LEADING TO STORMS THAT WILL BE LESS LIKELY TO PRODUCE HEAVY RAIN BUT WILL TEND TO FAVOR PRODUCTION OF STRONG WINDS INSTEAD. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. AZZ024-061245- SOUTHERN GILA COUNTY/TONTO NATIONAL FOREST FOOTHILLS- 544 AM MST TUE JUL 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST-CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT A MONSOON REGIME IS PLACE AND ANOTHER ROUND OF SCATTERED THUNDERSTORMS IS ANTICIPATED TODAY BRINGING THE POTENTIAL FOR STRONG WINDS...LOCALLY HEAVY RAIN...AND OF COURSE LIGHTNING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY LINGERING MOISTURE WILL MAINTAIN AT LEAST A SLIGHT CHANCE OF THUNDERSTORMS THROUGH MONDAY. SOMEWHAT LESS MOISTURE IS ANTICIPATED SATURDAY INTO EARLY NEXT WEEK LEADING TO STORMS THAT WILL BE LESS LIKELY TO PRODUCE HEAVY RAIN BUT WILL TEND TO FAVOR PRODUCTION OF STRONG WINDS INSTEAD. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. AZZ020-025-CAZ030>033-061245- LOWER COLORADO RIVER VALLEY AZ-YUMA/MARTINEZ LAKE AND VICINITY- JOSHUA TREE NATIONAL PARK-LOWER COLORADO RIVER VALLEY CA- RIVERSIDE COUNTY/EASTERN DESERTS-IMPERIAL COUNTY- 544 AM MST TUE JUL 5 2011 /544 AM PDT TUE JUL 5 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWEST ARIZONA...EXTREME WEST-CENTRAL ARIZONA...EXTREME SOUTHEAST CALIFORNIA AND SOUTHEAST CALIFORNIA. .DAY ONE...TODAY AND TONIGHT A MONSOON REGIME IS IN PLACE FOR A CHANCE OF THUNDERSTORM RELATED HAZARDS...MOST LIKELY IN THE EVENING. THESE INCLUDE VERY STRONG WINDS...BLOWING DUST...LOCALLY HEAVY RAIN...AND OF COURSE LIGHTNING. JOSHUA TREE NATIONAL PARK WILL BE MORE LIKELY TO EXPERIENCE THESE HAZARDS THAN IMPERIAL COUNTY AND THE LOWER ELEVATIONS OF EASTERN RIVERSIDE COUNTY. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY LINGERING MOISTURE WILL MAINTAIN A SLIGHT CHANCE OF THUNDERSTORMS INTO THURSDAY THEN DISSIPATE BY FRIDAY AS MOISTURE SHIFTS EASTWARD. THUS ANY STORMS THAT FORM THURSDAY WILL BE MORE LIKELY TO PRODUCE STRONG WINDS THAN HEAVY RAIN. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT WEATHER.GOV/PHOENIX
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 656 PM MST TUE JUL 5 2011 AZZ022-023-060245- MARICOPA AZ- 656 PM MST TUE JUL 5 2011 ...SIGNIFICANT WEATHER ADVISORY... THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... CENTRAL MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA UNTIL 745 PM MST AT 654 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A CLUSTER OF STRONG THUNDERSTORM S FROM 7 MILES NORTHEAST OF TONOPAH...TO NEAR WITTMANN...MOVING NORTHWEST AT 15 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THE STORMS...ALONG WITH HEAVY RAIN. BLOWING DUST IS POSSIBLE. IF YOU ENCOUNTER BLOWING DUST WHILE DRIVING...PULL OVER AS FAR OFF THE ROADWAY AS POSSIBLE AND PARK. TURN OFF YOUR HEADLIGHTS AND KEEP YOUR FOOT OFF THE BRAKE. VERY HEAVY RAINFALL MAY CAUSE TEMPORARY PONDING ON SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. IN HEAVY RAINFALL SLOW DOWN TO REDUCE THE RISK OF HYDROPLANING...AND LEAVE A SAFE DISTANCE BETWEEN YOURSELF AND OTHER VEHICLES. LAT...LON 3360 11302 3390 11262 3361 11215 3338 11254 TIME...MOT...LOC 0155Z 114DEG 11KT 3356 11263 WOODALL
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 710 PM MST TUE JUL 5 2011 AZZ020-021-026-060300- LA PAZ AZ-YUMA AZ- 710 PM MST TUE JUL 5 2011 ...SIGNIFICANT WEATHER ADVISORY... THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... NORTH CENTRAL YUMA COUNTY IN SOUTHWEST ARIZONA SOUTHERN LA PAZ COUNTY IN WEST CENTRAL ARIZONA UNTIL 800 PM MST AT 645 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 29 MILES SOUTH OF BRENDA...MOVING NORTHWEST AT 15 MPH. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... RURAL NORTHERN YUMA COUNTY... RURAL CENTRAL LA PAZ COUNTY... SOME UNSECURED OBJECTS WILL BE BLOWN AROUND...TREE LIMBS COULD BE SNAPPED OFF...AND ISOLATED POWER OUTAGES WILL BE POSSIBLE. SEEK SHELTER INDOORS UNTIL THE STORM PASSES. LAT...LON 3334 11457 3380 11415 3338 11338 3301 11365 TIME...MOT...LOC 0209Z 113DEG 14KT 3332 11390 WATERS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
721 PM MST TUE JUL 5 2011
AZZ022>024-027-028-060345-
MARICOPA AZ-PINAL AZ-
721 PM MST TUE JUL 5 2011
...LOCAL DUST STORM WARNING...
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
LOCAL DUST STORM WARNING FOR...
NORTHWESTERN PINAL COUNTY IN SOUTH CENTRAL ARIZONA
EASTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA
* COMMUNITIES IMPACTED: SUN LAKES...AHWATUKEE...DOWNTOWN PHOENIX...
PEORIA...APACHE JUNCTION...AVONDALE...CHANDLER...EL MIRAGE...FOUNTAIN
HILLS...GILBERT...GOODYEAR...LAVEEN...LIBERTY...LITCHFIELD PARK...
LUKE AFB...MESA...PARADISE VALLEY...PHOENIX...QUEEN CREEK...
SCOTTSDALE...SUN CITY...SURPRISE...TEMPE...TOLLESON...WADDELL...
YOUNGTOWN...MARICOPA...OLBERG...BAPCHULE...KINGS RANCH...CHANDLER
HEIGHTS...ARIZONA STATE UNIVERSITY...SKY HARBOR AIRPORT...EAST
MESA...DOWNTOWN SCOTTSDALE...GLENDALE SPORTS COMPLEX...PHOENIX
INTERNATIONAL RACEWAY...SOUTH PHOENIX...GLENDALE AND PHOENIX MESA
GATEWAY AIRPORT
* UNTIL 845 PM MST
* MAJOR HIGHWAYS IMPACTED INCLUDE:
SUPERSTITION FREEWAY US-60...
RED MOUNTAIN LOOP 202...
SANTAN LOOP 202...
PRICE FREEWAY 101...
APACHE TRAIL ARIZONA 88...
PIMA FREEWAY 101...
PAPAGO FREEWAY I-10...
AGUA FRIA LOOP 101...
BLACK CANYON FREEWAY I-17...
MARICOPA FREEWAY I-10...
GRAND AVENUE US-60...
I-10...
I-8...
BEELINE HIGHWAY 87...
ARIZONA 347...
ARIZONA 587...
AZ-287...
AZ-238...
PIONEER PARKWAY ARIZONA 79...
OGLESBY ROAD ARIZONA 85...
* DANGEROUSLY LOW VISIBILITIES HAVE BEEN REPORTED THROUGHOUT THE
EAST VALLEY AND THIS AREA WILL BE SPREADING THROUGH MUCH OF THE
REMAINDER OF THE PHOENIX METROPOLITAN AREA
* A LOCAL DUST STORM WARNING IS ISSUED WHEN WINDS HAVE GENERATED
LARGE AREAS OF BLOWING DUST OR BLOWING SAND THAT HAVE SUBSTANTIALLY
REDUCED VISIBILITIES...TO 1/4 MILE OR LESS...RESULTING IN VERY
HAZARDOUS DRIVING CONDITIONS IN SOME AREAS. BE READY FOR A SUDDEN
DROP IN VISIBILITY TO NEAR ZERO. IF YOU ENCOUNTER BLOWING DUST OR
BLOWING SAND ON THE ROADWAY OR SEE IT APPROACHING...PULL OFF THE ROAD
AS FAR AS POSSIBLE AND PUT YOUR VEHICLE IN PARK. TURN THE LIGHTS ALL
THE WAY OFF AND KEEP YOUR FOOT OFF THE BRAKE PEDAL.
&&
LAT...LON 3347 11145 3307 11123 3273 11174 3276 11174
3276 11177 3279 11178 3278 11187 3277 11188
3292 11238 3339 11252 3388 11222
WATERSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
729 PM MST TUE JUL 05 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0728 PM DUST STORM 5 SSE CHANDLER 33.22N 111.84W
07/05/2011 MARICOPA AZ TRAINED SPOTTER
ZERO VISIBILITY AT RIGGS AND 347/ARIZONA HWY.
&&
INIGUEZPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
735 PM MST TUE JUL 05 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0732 PM TSTM WND GST 5 E SUN LAKES 33.22N 111.79W
07/05/2011 M69 MPH MARICOPA AZ TRAINED SPOTTER
GILBERT AND RIGGS ROAD. SEVERAL OTHER REPORTS OF WINDS 50
TO 65 MPH.
&&
WATERSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
737 PM MST TUE JUL 5 2011
AZZ022-023-026-027-060330-
MARICOPA AZ-YUMA AZ-
737 PM MST TUE JUL 5 2011
...LOCAL DUST STORM WARNING...
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
LOCAL DUST STORM WARNING FOR...
SOUTHWESTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA
EASTERN YUMA COUNTY IN SOUTHWEST ARIZONA
* SPOTTERS HAVE REPORTED HIGH WINDS AND VISIBILITY LESS THAN 1/4
MILE TO THE SOUTHWEST OF GILA BEND.
* COMMUNITIES IMPACTED: DATELAND...MOHAWK...SENTINEL...TACNA...
SUNDAD...PALOMA AND TYSON
* UNTIL 830 PM MST
* MAJOR HIGHWAYS IMPACTED INCLUDE:
SUPERSTITION FREEWAY US-60...
RED MOUNTAIN LOOP 202...
SANTAN LOOP 202...
PRICE FREEWAY 101...
APACHE TRAIL ARIZONA 88...
PIMA FREEWAY 101...
PAPAGO FREEWAY I-10...
AGUA FRIA LOOP 101...
BLACK CANYON FREEWAY I-17...
MARICOPA FREEWAY I-10...
GRAND AVENUE US-60...
I-10...
I-8...
BEELINE HIGHWAY 87...
ARIZONA 347...
ARIZONA 587...
AZ-287...
AZ-238...
PIONEER PARKWAY ARIZONA 79...
OGLESBY ROAD ARIZONA 85...
PULL OFF HIGHWAYS...SHUT OFF LIGHTS...STAY OFF BRAKES.
* A LOCAL DUST STORM WARNING IS ISSUED WHEN WINDS HAVE GENERATED
LARGE AREAS OF BLOWING DUST OR BLOWING SAND THAT HAVE SUBSTANTIALLY
REDUCED VISIBILITIES...TO 1/4 MILE OR LESS...RESULTING IN VERY
HAZARDOUS DRIVING CONDITIONS IN SOME AREAS. BE READY FOR A SUDDEN
DROP IN VISIBILITY TO NEAR ZERO. IF YOU ENCOUNTER BLOWING DUST OR
BLOWING SAND ON THE ROADWAY OR SEE IT APPROACHING...PULL OFF THE ROAD
AS FAR AS POSSIBLE AND PUT YOUR VEHICLE IN PARK. TURN THE LIGHTS ALL
THE WAY OFF AND KEEP YOUR FOOT OFF THE BRAKE PEDAL.
&&
LAT...LON 3252 11335 3206 11335 3229 11415 3280 11408
3327 11368 3338 11253 3257 11234
WOODALLThe Phoenix radar (KIWA), 27 km away, was scanning. The volume nearest the first event began at 02:41 UTC.
4 thunderstorm wind. Local standard time, as filed.
According to a local storm chaser, strong thunderstorm microburst winds estimated to be in excess of 50 knots knocked down 20 power poles approximately 4 miles west of Sacaton.
Strong thunderstorms with damaging microburst winds affected the community of Sacaton during the evening hours on July 5th. According to Pinal county Emergency Managers, gusty winds estimated to be around 65 knots uprooted two twenty inch trees. The two trees then fell on the police station located at the Gila River indian community. No injuries were reported.
Strong thunderstorms with damaging microburst winds moved through the Coolidge area during the evening hours on July 5th. According to a report from the public, strong winds estimated to be at least 55 knots caused a tree to fall onto a house during the passage of a dust storm. As a result there was partial damage to the roof of the house.
Strong thunderstorms with damaging microburst winds developed near the community of Casa Grande during the evening hours of July 5th. According to a public report, thunderstorm winds estimated to be in excess of 55 knots blew over a semi truck along Interstate 8 at Mile Marker 169. No injuries were reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2011Every state in 2011This day in weather historyWarnings in Arizona, July 2011
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: 322196, 322197, 322237, 322198.