Moisture associated with decaying Tropical Storm Dolores, atmospheric instability following a warm afternoon, and a slow moving trough moving northward from Sonora, all combined to bring strong showers and thunderstorms to the region during the afternoon/evening hours of 18 July 2015. Storms initiated across southeast California shortly after noon, then quickly developed across western Arizona and merged into a slow moving line of storms around Wickenburg shortly after 430pm. While most of the Phoenix metro only saw light rainfall, areas near Wickenburg saw over 3.5 inches of rainfall over a 1-2 hour period. This resulted in dangerous flooding along the Hassayampa River as well as numerous area washes.
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Infrared Satellite imagery and total lightning data for Arizona/SE California. Note the increased lightning (white circles) and cold cloud tops (blue/green colors) over Wickenburg toward the end of the loop as the storms intensified. Loop approximately 3pm - 6pm 18 July 2015 |
Regional radar imagery. Loop approximately 2pm - 7pm 18 July 2015 |
Zoomed (Maricopa Co and surrounding area) regional radar imagery. Note the prolonged period of heavy rainfall (orange/red colors) over northwest Maricopa County, which led to 3-4 inches of rainfall. Loop approximately 2pm - 7pm 18 July 2015 |
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Flooding as seen in Wickenburg during the late afternoon hours of 18 July 2015. All images courtesy Rick Delaney
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Storm Damage and flooding in Wickenburg 18 July 2015. Images courtesy of Amy Rockey
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Rainfall reports from Flood Control District Sites across Maricopa County |
Countored rainfall across Maricopa County |
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1235 PM FLASH FLOOD 5 NE DESERT CENTER 33.77N 115.33W
07/18/2015 RIVERSIDE CA TRAINED SPOTTER
WATER REPORTED FLOWING DOWN HWY 177 AND KAISER RD WITH
MEASURED 3 INCHES OF WATER ON THE ROADS
0201 PM HEAVY RAIN 1 S BOUSE 33.91N 114.00W
07/18/2015 M1.00 INCH LA PAZ AZ TRAINED SPOTTER
MEASURED IN 17 MINUTES AND TSTM WIND GUST TO 54 MPH
0400 PM FLOOD 5 NE PARKER 34.19N 114.22W
07/18/2015 LA PAZ AZ LAW ENFORCEMENT
ESTIMATED 4 INCHES OF WATER ON ROADWAY AT RIVERSIDE
DRIVE AND CIENEGA SPRINGS ROAD. WATER FLOWING OVER
ROADWAY
0439 PM TSTM WND DMG 1 NW MORRISTOWN 33.86N 112.63W
07/18/2015 MARICOPA AZ LAW ENFORCEMENT
2 MILES OF POWER POLES DOWN... US 60 HAS BEEN CLOSED
BETWEEN MP 122-124.
0440 PM TSTM WND DMG 1 SE MORRISTOWN 33.84N 112.61W
07/18/2015 MARICOPA AZ TRAINED SPOTTER
SEVERAL POWER POLES DOWN AND PEA SIZE HAIL.
0459 PM FLOOD 6 SSW CIRCLE CITY 33.74N 112.62W
07/18/2015 MARICOPA AZ PUBLIC
LOCAL MEDIA REPORTS 3-6 INCHES OF WATER FLOWING OVER
ROADWAY FROM HEAVY RAIN. CARS UNABLE TO DRIVE THROUGH.
0540 PM FLOOD 2 SW WICKENBURG 33.95N 112.78W
07/18/2015 MARICOPA AZ TRAINED SPOTTER
CEMETARY WASH RUNNING WITH VERY HEAVY RAPIDS AND 2 IN.
DEEP WATER IN FRONT YARD.
0542 PM FLOOD 1 ESE WICKENBURG 33.96N 112.73W
07/18/2015 MARICOPA AZ TRAINED SPOTTER
2 INCH OF RAIN MEASURED IN 30 MIN. FLOODED ROADWAYS.
0605 PM FLOOD 2 E WICKENBURG 33.97N 112.72W
07/18/2015 MARICOPA AZ DEPT OF HIGHWAYS
US 60 HWY CLOSED AT MP 111 DUE TO FLOODED ROADWAY AND
UNABLE TO DRIVE ON ROADWAY.
0905 PM HEAVY RAIN 2 ESE SAN TAN MOUNTAIN 33.14N 111.62W
07/18/2015 M0.89 INCH PINAL AZ TRAINED SPOTTER
MEASURED IN 30 MINUTES.
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...PHOENIX AND SURROUNDING AREAS RAINFALL REPORTS AS OF 3 AM MST SUNDAY JUL 19...
RAINFALL (IN)
LOCATION 1 HR 24 HR
PHOENIX SKY HARBOR AIRPORT MARICOPA COUNTY 0.00 0.18
4TH OF JULY WASH MARICOPA COUNTY 0.00 0.20
ACDC @ 36TH ST. PARADISE VALLEY 0.00 0.12
AGUA FRIA @ BUCKEYE MARICOPA COUNTY 0.00 0.20
ANTELOPE CREEK YAVAPAI COUNTY 0.00 2.01
APACHE JUNCTION FRS APACHE JUNCTION 0.00 0.16
APACHE TRAIL APACHE JUNCTION 0.00 0.24
ARIZONA HUNT CLUB YAVAPAI COUNTY 0.00 0.35
ASHER HILLS MARICOPA COUNTY 0.00 0.12
ASU SOUTH TEMPE 0.00 0.04
AZTEC PARK SCOTTSDALE 0.00 0.08
BARTLETT LAKE MARICOPA COUNTY 0.00 0.31
BASELINE @ 547TH AVE. MARICOPA COUNTY 0.00 0.20
BELMONT MOUNTAINS MARICOPA COUNTY 0.00 0.12
BERNEIL WASH PARADISE VALLEY 0.00 0.20
BLACK HILL YAVAPAI COUNTY 0.00 0.24
BLACK MOUNTAIN MARICOPA COUNTY 0.00 0.20
BOX WASH MARICOPA COUNTY 0.00 0.59
BUCKEYE @ 547TH AVE. MARICOPA COUNTY 0.00 0.24
BUCKEYE FRS #1 MARICOPA COUNTY 0.00 0.16
BUCKEYE FRS #2 MARICOPA COUNTY 0.00 0.08
BUCKEYE FRS #3 MARICOPA COUNTY 0.00 0.24
BUCKEYE RD. @ SR 85 MARICOPA COUNTY 0.00 0.04
BUCKS WELL YAVAPAI COUNTY 0.00 0.28
BULLDOG CANYON MARICOPA COUNTY 0.00 0.16
BURTON TANK YAVAPAI COUNTY 0.00 0.08
CAMP CREEK MARICOPA COUNTY 0.00 0.04
CAREFREE RANCH SCOTTSDALE 0.00 0.08
CARRIAGE LANE PARK MESA 0.00 0.16
CASANDRO DAM WICKENBURG 0.00 3.54
CASANDRO WASH WICKENBURG 0.00 3.50
CASTLE HOT SPRINGS MARICOPA COUNTY 0.00 0.51
CAVE BUTTES DAM MARICOPA COUNTY 0.00 0.12
CAVE CR.@ SPUR CROSS MARICOPA COUNTY 0.00 0.08
CAVE CREEK CAVE CREEK 0.00 0.24
CAVE CREEK LANDFILL PHOENIX 0.00 0.28
CENTENNIAL @ WENDEN LA PAZ COUNTY 0.00 0.55
CENTENNIAL DIVIDE YAVAPAI COUNTY 0.00 0.08
CENTENNIAL LEVEE MARICOPA COUNTY 0.00 0.24
CENTENNIAL NR AGUILA MARICOPA COUNTY 0.00 0.20
CENTENNIAL RAILROAD MARICOPA COUNTY 0.00 0.24
CHANDLER @ ALMA SCHOOL CHANDLER 0.00 0.04
CHANDLER AIRPORT CHANDLER 0.00 0.08
CIRCLE CITY MARICOPA COUNTY 0.00 0.47
COLUMBIA HILL YAVAPAI COUNTY 0.00 0.12
COLUMBUS WASH MARICOPA COUNTY 0.00 0.12
CONGRESS YAVAPAI COUNTY 0.00 0.51
CONSTELLATION ROAD WICKENBURG 0.00 3.27
COPPER WASH MARICOPA COUNTY 0.00 0.08
COYOTE WASH MARICOPA COUNTY 0.00 0.08
CROSSROADS PARK GILBERT 0.00 0.08
CROWN KING YAVAPAI COUNTY 0.00 0.35
CRUFF WASH MARICOPA COUNTY 0.04 0.39
DAGGS WASH MARICOPA COUNTY 0.00 0.67
DEAD HORSE WASH MARICOPA COUNTY 0.00 0.12
DEER VALLEY AIRPORT PHOENIX 0.00 0.12
DELANEY WASH MARICOPA COUNTY 0.00 0.12
DEWEY YAVAPAI COUNTY 0.00 0.31
DREAMY DRAW DAM PHOENIX 0.00 0.04
EAGLE EYE RD. @ CAP MARICOPA COUNTY 0.00 0.39
EAST FORK CC #1 PHOENIX 0.00 0.08
EAST FORK CC #3 PHOENIX 0.00 0.12
EFCC NR 7TH AVE. PHOENIX 0.00 0.04
ELLIOT @ HAWES RD. MESA 0.00 0.04
EMF @ ARIZONA AVE. PINAL COUNTY 0.00 0.04
EMF @ QUEENCREEK RD. MARICOPA COUNTY 0.00 0.04
FITCH PARK MESA 0.00 0.04
FLORENCE JUNCTION PINAL COUNTY 0.00 0.12
FLYING E TANK MARICOPA COUNTY 0.00 3.74
FLYING E WASH WICKENBURG 0.00 3.54
FORD CANYON WASH MARICOPA COUNTY 0.00 0.12
FOUR MILE WASH MARICOPA COUNTY 0.00 0.16
FRAESFIELD MTN. SCOTTSDALE 0.00 0.04
FREESTONE BASIN GILBERT 0.00 0.04
G&F WOOLSEY PEAK MARICOPA COUNTY 0.00 0.75
GARFIAS MTN. RANCH YAVAPAI COUNTY 0.00 0.12
GATEWAY C.COLLEGE PHOENIX 0.00 0.24
GILA @ ESTRELLA PKWY. GOODYEAR 0.00 0.08
GILA @ OLBERG GILA RIVER IC 0.00 0.16
GILA BEND LANDFILL MARICOPA COUNTY 0.00 0.08
GILA BEND MOUNTAINS MARICOPA COUNTY 0.00 0.12
GLADDEN MARICOPA COUNTY 0.00 0.12
GRANITE REEF WASH SCOTTSDALE 0.00 0.04
GRASS WASH @ US 60 MARICOPA COUNTY 0.00 0.16
GUADALUPE CHANNEL MESA 0.00 0.04
GUADALUPE FRS PHOENIX 0.00 0.04
HARQUAHALA FRS MARICOPA COUNTY 0.00 0.16
HARQUAHALA MTN. LA PAZ COUNTY 0.00 0.28
HARTMAN WASH MARICOPA COUNTY 0.00 2.72
HASSAYAMPA LANDFILL MARICOPA COUNTY 0.00 0.16
HASSY R. @ BOX CANYON YAVAPAI COUNTY 0.00 2.52
HASSY R. @ I-10 MARICOPA COUNTY 0.00 0.20
HASSY R. @ US 60 WICKENBURG 0.00 3.90
HASSY R. @ WAGONER RD. YAVAPAI COUNTY 0.00 0.51
HIGHLAND @ 68TH ST. SCOTTSDALE 0.00 0.16
HORNER MTN. RANCH YAVAPAI COUNTY 0.00 0.16
HORSESHOE LAKE MARICOPA COUNTY 0.00 0.35
HORSETHIEF BASIN YAVAPAI COUNTY 0.00 0.35
HUMBOLDT MOUNTAIN MARICOPA COUNTY 0.00 0.16
I-10 @ 355TH AVE. MARICOPA COUNTY 0.00 0.24
I-17 @ SR 169 YAVAPAI COUNTY 0.00 0.35
IBW @ INDIAN BEND RD. SCOTTSDALE 0.00 0.16
IBW @ INDIAN SCHOOL SCOTTSDALE 0.00 0.12
IBW @ MCKELLIPS RD. SCOTTSDALE 0.04 0.04
IBW @ SHEA BLVD. PHOENIX 0.00 0.28
IBW @ SWEETWATER PHOENIX 0.00 0.16
IBW INTERCEPTOR SCOTTSDALE 0.04 0.12
JACKRABBIT WASH MARICOPA COUNTY 0.00 0.12
JOSHUA TREE YAVAPAI COUNTY 0.00 0.20
KINGS RANCH PINAL COUNTY 0.00 0.04
KLEINMAN PARK MESA 0.00 0.04
LAKE MARGUARITE SCOTTSDALE 0.00 0.12
MAGMA FRS PINAL COUNTY 0.00 0.04
MARTINEZ CREEK YAVAPAI COUNTY 0.00 1.89
MCDOWELL @ HAWES MARICOPA COUNTY 0.00 0.04
MCDOWELL @ MERIDIAN PINAL COUNTY 0.00 0.12
MCMICKEN DAM SURPRISE 0.00 0.04
MCMICKEN FLOODWAY MARICOPA COUNTY 0.00 0.16
MESA TOWER MESA 0.00 0.04
MID-MARTINEZ CREEK YAVAPAI COUNTY 0.00 1.02
MINNEHAHA YAVAPAI COUNTY 0.00 1.02
MOBILE MARICOPA COUNTY 0.04 0.04
MORRISTOWN MARICOPA COUNTY 0.00 0.87
MOUNTAIN VIEW PARK MESA 0.00 0.04
MT. OATMAN MARICOPA COUNTY 0.00 1.42
MT. ORD GILA COUNTY 0.00 0.16
MT. UNION WX YAVAPAI COUNTY 0.00 1.42
NARROWS DAMSITE LA PAZ COUNTY 0.00 0.16
NEW RIVER MESA MARICOPA COUNTY 0.00 0.08
NW REGIONAL LANDFILL MARICOPA COUNTY 0.00 0.08
O'BRIEN GULCH YAVAPAI COUNTY 0.00 1.73
OLD X-CUT @ MCDOWELL PHOENIX 0.00 0.24
OSBORN @ 64TH ST. SCOTTSDALE 0.00 0.28
OUTLAW HILL MARICOPA COUNTY 0.00 0.08
PAPAGO PARK PHOENIX 0.00 0.31
PARADISE VALLEY CC PARADISE VALLEY 0.00 0.24
PARADISE VALLEY PARK PHOENIX 0.00 0.12
PATTON ROAD MARICOPA COUNTY 0.00 0.20
PERRY PARK PHOENIX 0.00 0.08
PHOENIX BASIN #3 PHOENIX 0.00 0.04
PHOENIX BASIN #7 PHOENIX 0.00 0.04
PIMA @ JOMAX SCOTTSDALE 0.00 0.08
PIMA @ UNION HILLS SCOTTSDALE 0.00 0.12
PINNACLE PEAK VISTA SCOTTSDALE 0.00 0.12
POWDER HOUSE WASH WICKENBURG 0.00 3.50
POWERLINE FRS PINAL COUNTY 0.04 0.12
PRESCOTT VALLEY YAVAPAI COUNTY 0.04 0.16
QUEEN CR. @ CAP PINAL COUNTY 0.00 0.35
QUEEN CREEK LANDFILL QUEEN CREEK 0.00 0.04
RACKENSACK CANYON MARICOPA COUNTY 0.00 0.04
RAINBOW WASH MARICOPA COUNTY 0.00 0.16
RAWHIDE WASH SCOTTSDALE 0.00 0.08
REATA PASS DAM SCOTTSDALE 0.00 0.08
REATA PASS WASH SCOTTSDALE 0.00 0.04
RITTENHOUSE FRS PINAL COUNTY 0.00 0.24
RITTER DAM YAVAPAI COUNTY 0.00 0.08
ROESER @ 2ND ST. PHOENIX 0.00 0.04
SADDLEBACK FRS MARICOPA COUNTY 0.00 0.12
SAGUARO LAKE MARICOPA COUNTY 0.00 0.12
SALT R. @ 40TH ST. PHOENIX 0.00 0.31
SAND TANK @ I-8 GILA BEND 0.00 0.12
SAND TANK WASH MARICOPA COUNTY 0.00 0.08
SANTA CRUZ @ SR 84 PINAL COUNTY 0.00 0.12
SAUCEDA WASH MARICOPA COUNTY 0.00 0.16
SEVEN SPRINGS WASH MARICOPA COUNTY 0.00 0.04
SIGNAL BUTTE FRS MARICOPA COUNTY 0.00 0.20
SMITH PEAK LA PAZ COUNTY 0.00 0.08
SOLS TANK YAVAPAI COUNTY 0.00 0.24
SOLS TRIB @ US 93 YAVAPAI COUNTY 0.00 0.16
SOLS WASH @ SR 71 YAVAPAI COUNTY 0.00 0.47
SOLS WASH NR MATTHIE MARICOPA COUNTY 0.00 2.56
SOUTH MOUNTAIN PARK PHOENIX 0.00 0.43
SOUTH MTN.PARK HQ PHOENIX 0.00 0.12
SPOOKHILL BROWN MESA 0.00 0.08
SPOOKHILL MCKELLIPS MARICOPA COUNTY 0.00 0.04
STAGECOACH WASH SCOTTSDALE 0.00 0.12
STANTON YAVAPAI COUNTY 0.00 1.93
SUGARLOAF MOUNTAIN MARICOPA COUNTY 0.00 0.20
SUN VALLEY @ NORTHERN BUCKEYE 0.00 0.16
SUNNYCOVE FRS WICKENBURG 0.00 3.66
SUNSET FRS WICKENBURG 0.00 3.11
SUNSET POINT YAVAPAI COUNTY 0.00 0.04
TATUM BASIN INFLOW PHOENIX 0.00 0.28
THOMAS @ 48TH ST. PHOENIX 0.00 0.20
THOMPSON PEAK SCOTTSDALE 0.00 0.04
THUNDER MOUNTAIN MARICOPA COUNTY 0.00 0.04
THUNDERBIRD ACADEMY SCOTTSDALE 0.00 0.16
TIGER WASH MARICOPA COUNTY 0.00 0.24
TIGER WASH FAN MARICOPA COUNTY 0.00 0.20
TOWERS MTN. YAVAPAI COUNTY 0.00 0.55
TUTHILL @ RAY RD. MARICOPA COUNTY 0.00 0.63
TWIN PEAKS MARICOPA COUNTY 0.00 5.08
UPPER CLINE CREEK MARICOPA COUNTY 0.00 0.04
UPPER GRASS WASH MARICOPA COUNTY 0.00 0.12
UPPER TIGER WASH MARICOPA COUNTY 0.00 0.16
UPPER TRILBY WASH YAVAPAI COUNTY 0.00 0.91
UPPER WATERMAN WASH MARICOPA COUNTY 0.00 0.08
USERY MTN. PARK MARICOPA COUNTY 0.00 0.08
USERY PARK WS MARICOPA COUNTY 0.00 0.12
VEKOL WASH MARICOPA COUNTY 0.00 0.04
VINEYARD FRS PINAL COUNTY 0.00 0.16
VULTURE MINE ROAD MARICOPA COUNTY 0.00 4.41
WATERMAN @ RAINBOW GOODYEAR 0.00 0.24
WEBB MOUNTAIN MARICOPA COUNTY 0.00 0.39
WEEKES WASH BASELINE APACHE JUNCTION 0.00 0.16
WHITE TANK FRS 3 MARICOPA COUNTY 0.00 0.04
WHITE TANK PEAK MARICOPA COUNTY 0.00 0.08
WHITLOW RANCH DAM PINAL COUNTY 0.00 0.04
WICKENBURG AIRPORT WICKENBURG 0.00 3.46
WILHOIT YAVAPAI COUNTY 0.00 0.47
WILLIAMS FIELD ROAD MARICOPA COUNTY 0.00 0.08
WINTERS WASH MARICOPA COUNTY 0.00 0.24
WITTMANN MARICOPA COUNTY 0.00 0.12
WOLVERINE PASS MARICOPA COUNTY 0.00 0.16
WOOD TANK YAVAPAI COUNTY 0.00 0.28
THESE RAINFALL AMOUNTS ARE PRELIMINARY AND ARE NOT OFFICIAL.
AUTOMATED GAUGE DATA ARE FROM THE MARICOPA COUNTY FLOOD
CONTROL DISTRICT. STATIONS WITH NO RECORDED PRECIPITATION
ARE NOT SHOWN.
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