Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 19, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 14, 2012, 4:50 PM MST for Maricopa County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2012, 4:50 PM MST (23:50 UTC)
- Expired
- Jul 14, 2012, 7:10 PM MST
- In force
- 2 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 73 km from the middle of the area, began a volume at 23:50 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.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 11.8 hours before the alert went out and 72 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.
858
WGUS55 KPSR 142350
FFWPSR
AZC013-150345-
/O.NEW.KPSR.FF.W.0019.120714T2350Z-120715T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
450 PM MST SAT JUL 14 2012
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EXTREME NORTHEASTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA...
THIS INCLUDES ROUND VALLEY...SYCAMORE CREEK...SUNFLOWER...
* UNTIL 845 PM MST
* AT 443 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
HEAVY RAIN OVER THE SUNFLOWER BURN AREA. THE RAIN WILL PRODUCE HIGH
WATER IN CREEKS AND WASHES ACCOMPANIED BY MUD...ROCKS...AND DEBRIS.
* FLASH FLOODING OF THE SYCAMORE CREEK DRAINAGE IS IMMINENT AND WILL
IMPACT THE COMMUNITY OF SUNFLOWER...AS WELL AS LOW WATER CROSSINGS
OF FOREST ROADS AND TRAILS. THIS INCLUDES FOREST ROAD 22 SOUTH
OF HIGHWAY 87...THE ARIZONA TRAIL...AND BOULDER CREEK. FLASH
FLOODING OF SYCAMORE CREEK IS IMMINENT AND WILL AFFECT
LOCATIONS DOWNSTREAM OF SUNFLOWER. LOCATIONS INCLUDE BOULDER
CREEK...ROUND VALLEY...AND THE MESQUITE WASH NEAR SUGARLOAF
MOUNTAIN RECREATION AREA. THE FLOW COULD POSSIBLY REACH THE
VERDE RIVER AT THE FORT MCDOWELL INDIAN COMMUNITY.
LAT...LON 3399 11143 3392 11145 3392 11141 3375 11141
3380 11155 3400 11160 3401 11145
$$
WATERS2 follow-up statements
419
WGUS75 KPSR 150046
FFSPSR
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
546 PM MST SAT JUL 14 2012
AZC013-150345-
/O.CON.KPSR.FF.W.0019.000000T0000Z-120715T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARICOPA AZ-
546 PM MST SAT JUL 14 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MST FOR
EXTREME NORTHEASTERN MARICOPA COUNTY INCLUDING THE SUNFLOWER BURN...
AT 537 PM MST...SCATTERED SHOWERS AND THUNDERSTORMS PRODUCING
LOCALLY HEAVY RAIN CONTINUE TO MOVE NORTH ACROSS THE SUNFLOWER BURN
AREA. THE SYCAMORE CREEK WEST FORK GAGE LOCATED OVER THE SOUTH
CENTRAL PORTION OF THE BURN REPORTED 0.43 INCHES OF RAIN SINCE 440
PM...AND RAINFALL OF THAT MAGNITUDE SHOULD BE SUFFICIENT TO CAUSE
FLASH FLOODING IN THE BURN AREA...AND DOWNSTREAM ALONG SYCAMORE
CREEK.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SYCAMORE
CREEK AND ROUND VALLEY.
AS OF 540 PM NO ACTUAL REPORTS OF FLASH FLOODING HAVE BEEN RECEIVED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE BANKS OF SYCAMORE CREEK OR OTHER NEARBY DRAINAGE
AREAS MOVE IMMEDIATELY TO HIGHER GROUND. DO NOT DRIVE YOUR VEHICLE
INTO AREAS WHERE WATER COVERS THE ROAD. TURN AROUND DONT DROWN.
LIFE-THREATENING FLOODING OF CREEKS...ROADS AND NORMALLY DRY WASHES
IS LIKELY. THE HEAVY RAINS WILL TRIGGER MUD AND DEBRIS FLOWS...AND
ROCKSLIDES IN STEEP TERRAIN...ESPECIALLY NEAR THE BURN AREA.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT.
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.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
PHOENIX.
&&
LAT...LON 3399 11143 3392 11145 3392 11141 3375 11141
3380 11155 3400 11160 3401 11145
$$
CB124
WGUS75 KPSR 150210
FFSPSR
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
710 PM MST SAT JUL 14 2012
AZC013-150220-
/O.CAN.KPSR.FF.W.0019.000000T0000Z-120715T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARICOPA AZ-
710 PM MST SAT JUL 14 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME
NORTHEASTERN MARICOPA COUNTY...THE SUNFLOWER BURN AREA.
RAIN HAS STOPPED ACROSS THE SUNFLOWER BURN AREA.
LAT...LON 3399 11143 3392 11145 3392 11141 3375 11141
3380 11155 3400 11160 3401 11145
$$
WATERSThe 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, 3:48 PM MST | Flash Flood Warning | PSR | Maricopa, Pinal | 117 min |
| Jul 14, 4:30 PM MST | Areal Flood Advisory | PSR | La Paz, Yuma | 90 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.