Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 18, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 14, 2012, 3:48 PM MST for Maricopa County, Pinal County, Arizona. It was in force for 117 min. 7 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 14, 2012, 3:48 PM MST (22:48 UTC)
- Expired
- Jul 14, 2012, 5:45 PM MST
- In force
- 117 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Maricopa County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 15 km from the middle of the area, began a volume at 22:50 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 14, 4:01 PM MST | HEAVY RAIN 1.1 | 2 Sw Gilbert, AZ | 1.1 INCHES OF RAIN BETWEEN 330PM AND 400PM |
| Jul 14, 4:10 PM MST | HEAVY RAIN 0.71 | 1 Nw Chandler Fashion C, AZ | MEASURED IN 20 MINUTES AT RAY AND MCCLINTOCK |
| Jul 14, 4:20 PM MST | HEAVY RAIN 1 | Seville, AZ | 1 INCH MEASURED IN A HALF HOUR |
| Jul 14, 4:28 PM MST | FLASH FLOOD | 2 S Mesa, AZ | FOUR LANES OF US-60 BLOCKED IN EACH DIRECTION DUE TO FLOODING - FROM ADOT |
| Jul 14, 4:36 PM MST | HEAVY RAIN 2.25 | 1 N Gilbert, AZ | 2.25 INCHES OF RAIN IN LAST HOUR AT HOME AT VAL VISTA AND ELLIOT. MARBLE SIZED HAIL...TREE DAMAGE...AND STREET FLOODING AT SAN TAN VILLAGE MALL. |
| Jul 14, 4:42 PM MST | HEAVY RAIN 0.93 | 2 W Apache Junction, AZ | MEASURED IN ONE HALF HOUR |
| Jul 14, 4:54 PM MST | FLOOD | 3 W Mesa, AZ | MINOR URBAN FLOODING AT THE INTERSECTION OF BROADWAY AND GILBERT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 10.8 hours before the alert went out and 27 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1064 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1390 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
923
WGUS55 KPSR 142248
FFWPSR
AZC013-021-150045-
/O.NEW.KPSR.FF.W.0018.120714T2248Z-120715T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
348 PM MST SAT JUL 14 2012
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA...
THIS INCLUDES GLENDALE...EAST MESA...AHWATUKEE...TEMPE...SUN
LAKES...PHOENIX...PARADISE VALLEY...MESA...LAVEEN...GILBERT...
CHANDLER...
NORTHWESTERN PINAL COUNTY IN SOUTH CENTRAL ARIZONA...
THIS INCLUDES FLORENCE...COOLIDGE...CASA GRANDE...APACHE
JUNCTION...
* UNTIL 545 PM MST
* AT 340 PM MST...THE PUBLIC REPORTED VERY HEAVY RAIN IN EXCESS
OF ONE INCH IN ONE HALF HOUR DUE TO THUNDERSTORMS OVER THE WARNED
AREA. HEAVY RAIN WILL LEAD TO FLASH FLOODING OF AREA ROADS...
STREAMS AND NORMALLY DRY WASHES.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRANITE
REEF DAM...PIESTEWA PEAK PARK...FALCON FIELD AIRPORT...SEVILLE...
TUMBLEWEED PARK...PAPAGO PARK...SUPERSTITION MOUNTAINS...LOST
DUTCHMAN STATE PARK...CAMELBACK MOUNTAIN...FIESTA MALL...MESA
RIVERVIEW MALL...TEMPE MARKETPLACE...ARIZONA MILLS MALL...ARIZONA
STATE FAIRGROUNDS...SOUTH MOUNTAIN PARK...CHANDLER FASHION CENTER
MALL...SAN TAN VILLAGE MALL...SAN TAN MOUNTAIN PARK...USERY
MOUNTAIN PARK...SUPERSTITION SPRINGS MALL...PHOENIX MESA GATEWAY
AIRPORT...SOUTH PHOENIX...DOWNTOWN PHOENIX...DOWNTOWN SCOTTSDALE...
SKY HARBOR AIRPORT...ARIZONA STATE UNIVERSITY...CHANDLER HEIGHTS...
KINGS RANCH...SAN TAN VALLEY...MAGMA...BAPCHULE...OLBERG...QUEEN
CREEK AND FLORENCE JUNCTION
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF NORMALLY
DRY WASHES AND CREEKS STREETS AND UNDERPASSES AND DETENTION BASINS
AFFECTING SOME COMMUNITY PARKS. UNBRIDGED CROSSINGS WILL BE
ESPECIALLY DANGEROUS.
&&
LAT...LON 3355 11224 3353 11140 3305 11126 3287 11150
3282 11221
$$
CB1 follow-up statement
670
WGUS75 KPSR 142333
FFSPSR
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
433 PM MST SAT JUL 14 2012
AZC013-021-150045-
/O.CON.KPSR.FF.W.0018.000000T0000Z-120715T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PINAL AZ-MARICOPA AZ-
433 PM MST SAT JUL 14 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR
CENTRAL MARICOPA AND NORTHWESTERN PINAL COUNTIES...
AT 422 PM MST...THE PUBLIC REPORTED THUNDERSTORMS PRODUCING VERY
HEAVY RAIN OVER THE WARNED AREA...PRIMARILY ENCOMPASSING THE EAST
AND SOUTHEAST PORTIONS OF THE GREATER PHOENIX AREA SUCH AS CHANDLER
AND GILBERT. RAINFALL HAD DIMINISHED SINCE 415 PM AND WAS MOVING
TOWARDS THE NORTHEAST HOWEVER DUE TO THE VERY HEAVY RAIN THAT FELL
EARLIER...THERE WILL STILL BE FLOODING OF AREA WASHES AS WELL AS
WATER RUNNING OVER ROADS SUCH AS HIGHWAY 202. THE FLASH FLOOD
WARNING WILL CONTINUE THROUGH 545 PM.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRANITE REEF
DAM...PIESTEWA PEAK PARK...FALCON FIELD AIRPORT...SEVILLE...
TUMBLEWEED PARK...PAPAGO PARK...SUPERSTITION MOUNTAINS...LOST
DUTCHMAN STATE PARK...CAMELBACK MOUNTAIN...FIESTA MALL...MESA
RIVERVIEW MALL...TEMPE MARKETPLACE...ARIZONA MILLS MALL...ARIZONA
STATE FAIRGROUNDS...SOUTH MOUNTAIN PARK...CHANDLER FASHION CENTER
MALL...SAN TAN VILLAGE MALL...USERY MOUNTAIN PARK...SUPERSTITION
SPRINGS MALL...PHOENIX MESA GATEWAY AIRPORT...GLENDALE...SOUTH
PHOENIX...DOWNTOWN PHOENIX...DOWNTOWN SCOTTSDALE...EAST MESA...SKY
HARBOR AIRPORT...ARIZONA STATE UNIVERSITY...CHANDLER HEIGHTS...KINGS
RANCH...SAN TAN VALLEY...AHWATUKEE...TEMPE...SUN LAKES...QUEEN
CREEK...PHOENIX...PARADISE VALLEY...MESA...LAVEEN...GILBERT...
FLORENCE JUNCTION...CHANDLER AND APACHE JUNCTION
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3355 11224 3353 11140 3305 11126 3287 11150
3282 11221
$$
CBThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 5:16 PM MST | Special Weather Statement | PSR | Yuma | 59 min |
| Jul 13, 5:21 PM MST | Special Weather Statement | PSR | Yuma | 54 min |
| Jul 13, 5:30 PM MST | Severe Thunderstorm Warning | PSR | La Paz | 60 min |
| Jul 13, 5:37 PM MST | Special Weather Statement | PSR | 38 min | |
| Jul 13, 6:02 PM MST | Flash Flood Warning | PSR | La Paz, Yuma | 118 min |
| Jul 13, 6:42 PM MST | Severe Thunderstorm Warning | PSR | La Paz, Yuma | 43 min |
| Jul 13, 6:54 PM MST | Flash Flood Warning | PSR | La Paz, Yuma | 111 min |
| Jul 13, 7:30 PM MST | Areal Flood Advisory | PSR | La Paz | 2 hr |
| Jul 13, 7:57 PM MST | Areal Flood Advisory | PSR | La Paz, Yuma | 2 hr |
| Jul 13, 8:33 PM MST | Areal Flood Advisory | PSR | La Paz | 117 min |
| Jul 13, 8:38 PM MST | Flash Flood Warning | PSR | Yuma | 112 min |
| Jul 13, 9:47 PM MST | Areal Flood Advisory | PSR | La Paz | 118 min |
| Jul 13, 10:28 PM MST | Areal Flood Advisory | PSR | La Paz, Yuma | 3 hr |
| Jul 14, 11:01 AM MST | Special Weather Statement | PSR | La Paz | 44 min |
| Jul 14, 11:37 AM MST | Areal Flood Advisory | PSR | La Paz | 113 min |
| Jul 14, 11:40 AM MST | Areal Flood Advisory | PSR | La Paz | 2 hr |
| Jul 14, 11:52 AM MST | Special Weather Statement | PSR | La Paz | 38 min |
| Jul 14, 12:15 PM MST | Areal Flood Advisory | PSR | La Paz | 2 hr |
| Jul 14, 12:34 PM MST | Flash Flood Warning | PSR | La Paz | 3 hr |
| Jul 14, 12:38 PM MST | Flash Flood Warning | PSR | La Paz | 3 hr |
| Jul 14, 12:49 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
| Jul 14, 1:20 PM MST | Areal Flood Advisory | PSR | Maricopa | 115 min |
| Jul 14, 2:02 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
| Jul 14, 2:28 PM MST | Special Weather Statement | PSR | 47 min | |
| Jul 14, 2:32 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 118 min |
| Jul 14, 2:42 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 2 hr |
| Jul 14, 2:51 PM MST | Areal Flood Advisory | PSR | Gila | 114 min |
| Jul 14, 2:53 PM MST | Areal Flood Advisory | PSR | La Paz, Maricopa | 112 min |
| Jul 14, 3:01 PM MST | Severe Thunderstorm Warning | PSR | Gila | 59 min |
| Jul 14, 3:14 PM MST | Flash Flood Warning | PSR | La Paz | 2 hr |
| Jul 14, 3:21 PM MST | Areal Flood Advisory | PSR | Maricopa | 114 min |
| Jul 14, 3:23 PM MST | Blowing Dust Advisory | PSR | 97 min | |
| Jul 14, 3:27 PM MST | Flash Flood Warning | PSR | La Paz, Maricopa | 2 hr |
| Jul 14, 3:35 PM MST | Areal Flood Advisory | PSR | Maricopa | 115 min |
| Jul 14, 3:35 PM MST | Special Weather Statement | PSR | 40 min | |
| Jul 14, 3:43 PM MST | Severe Thunderstorm Warning | PSR | Maricopa, Pinal | 47 min |
| Jul 14, 3:44 PM MST | Special Weather Statement | PSR | 46 min | |
| Jul 14, 4:30 PM MST | Areal Flood Advisory | PSR | La Paz, Yuma | 90 min |
| Jul 14, 4:50 PM MST | Flash Flood Warning | PSR | Maricopa | 2 hr |
Nearby
Flash Flood Warnings in Arizona, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.