Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 76, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Sep 10, 2012, 11:25 PM MST for Maricopa County, Arizona. It was in force for 110 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 10, 2012, 11:25 PM MST (06:25 UTC)
- Expired
- Sep 11, 2012, 1:15 AM MST
- In force
- 110 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 06:24 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 00:00Z, 6.4 hours before the alert went out and 51 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
- 179 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 2111 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
591 WGUS55 KPSR 110625 FFWPSR AZC013-110815- /O.NEW.KPSR.FF.W.0076.120911T0625Z-120911T0815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 1125 PM MST MON SEP 10 2012 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTH CENTRAL MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES NEW RIVER AND ANTHEM... * UNTIL 115 AM MST * AT 1120 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED VERY HEAVY RAIN THAT WILL CAUSE FLASH FLOODING. RAIN GAUGES UPSTREAM ALONG SKUNK AND CLINE CREEKS REPORTED CLOSE TO ONE INCH OF RAIN HAD FALLEN IN THE LAST HALF HOUR. * THE STORM PRODUCING VERY HEAVY RAIN WILL GENERATE RUNOFF THAT WILL FLOW THROUGH SKUNK AND CLINE CREEKS IN THE VICINITY OF NEW RIVER ROAD...THE COMMUNITIES OF NEW RIVER AND ANTHEM AND MAY IMPACT THE CAREFREE HIGHWAY FURTHER DOWNSTREAM. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT PEOPLE ALONG THE BANKS OF WASHES AND CREEKS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. NORMALLY DRY WASHES AND STREAMS WILL SUDDENLY HAVE RUNNING WATER AND MAKE UNBRIDGED CROSSINGS IMPASSABLE. STREETS...UNDERPASSES...AND LOW SPOTS WILL BECOME INUNDATED MAKING DRIVING HAZARDOUS IN THE WARNED AREA. MOST FLOOD DEATHS OCCUR IN MOTORIZED VEHICLES. WHEN ENCOUNTERING FLOODED ROADS...MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. && LAT...LON 3393 11215 3394 11206 3379 11207 3379 11215 $$ NOLTE
3 follow-up statements
859 WGUS75 KPSR 110653 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 1153 PM MST MON SEP 10 2012 AZC013-110815- /O.CON.KPSR.FF.W.0076.000000T0000Z-120911T0815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MARICOPA AZ- 1153 PM MST MON SEP 10 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM MST FOR NORTH CENTRAL MARICOPA COUNTY... AT 1140 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED HEAVY RAINFALL FROM THUNDERSTORMS THAT WILL CAUSE FLASH FLOODING. STREAM GAUGE LOCATED IN THE CLINE CREEK WASH NORTHEAST OF THE INTERSECTION OF NEW RIVER AND CIRCLE MOUNTAIN ROAD INDICATED STREAM FLOW UP OVER 5 FEET FROM STORM RUNOFF. ADDITIONAL ELEVATED RUNOFF WAS REPORTED IN THE SKUNK CREEK WASH AS WELL. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PORTIONS OF NEW RIVER...SABROSA AND LOCATIONS ALONG NEW RIVER ROAD NORTH OF DESERT HILLS ROAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE BANK OF A WASH OR CREEK IN THE WARNING AREA... MOVE TO HIGHER GROUND IMMEDIATELY. MOST FLOOD DEATHS OCCUR IN MOTORIZED VEHICLES. WHEN ENCOUNTERING FLOODED ROADS...MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. && LAT...LON 3393 11215 3394 11206 3379 11207 3379 11215 $$ NOLTE
259 WGUS75 KPSR 110746 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 1246 AM MST TUE SEP 11 2012 AZC013-110815- /O.CON.KPSR.FF.W.0076.000000T0000Z-120911T0815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MARICOPA AZ- 1246 AM MST TUE SEP 11 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM MST FOR NORTH CENTRAL MARICOPA COUNTY... THE FLASH FLOOD WARNING ISSUED EARLIER FOR CLINE CREEK...WHICH IS LOCATED NORTHEAST OF THE COMMUNITY OF ANTHEM...CONTINUES IN EFFECT UNTIL 115 AM. AT 1240 AM THE STREAM GAGE AT CLINE CREEK INDICATED FLOOD WATERS HAD DROPPED FROM 5 FEET TO 3 FEET. FLASH FLOODING ON CLINE CREEK WAS CROSSING NEW RIVER ROAD NEAR EAST MANO DRIVE...BEFORE EMPTYING INTO SKUNK CREEK WASH. MOTORISTS DRIVING ON NEW RIVER ROAD EAST OF ANTHEM SHOULD USE CAUTION...FLOODED ROADWAYS ARE DIFFICULT TO SEE AT NIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE BANK OF A WASH OR CREEK IN THE WARNING AREA... MOVE TO HIGHER GROUND IMMEDIATELY. A FLASH FLOOD WARNING MEANS THAT PEOPLE ALONG THE BANKS OF WASHES AND CREEKS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. NORMALLY DRY WASHES AND STREAMS WILL SUDDENLY HAVE RUNNING WATER AND MAKE UNBRIDGED CROSSINGS IMPASSABLE. STREETS...UNDERPASSES...AND LOW SPOTS WILL BECOME INUNDATED MAKING DRIVING HAZARDOUS IN THE WARNED AREA. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF NORMALLY DRY WASHES AND CREEKS...ROADS...AND LOW LYING SPOTS. UNBRIDGED CROSSINGS WILL BE ESPECIALLY DANGEROUS. && LAT...LON 3393 11215 3394 11206 3379 11207 3379 11215 $$ HV
006 WGUS75 KPSR 110806 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 106 AM MST TUE SEP 11 2012 AZC013-110816- /O.EXP.KPSR.FF.W.0076.000000T0000Z-120911T0815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MARICOPA AZ- 106 AM MST TUE SEP 11 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 115 AM MST FOR NORTH CENTRAL MARICOPA COUNTY... HEAVY RAINFALL NEAR NEW RIVER AND ANTHEM HAS ENDED. WHILE RUNOFF WILL CONTINUE THROUGH THE PRE-DAWN HOURS...THE THREAT FOR WIDESPREAD FLASH FLOODING HAS ENDED. THE FLASH FLOOD WARNING HAS BEEN REPLACED WITH A FLOOD ADVISORY UNTIL 4 AM. LAT...LON 3393 11215 3394 11206 3379 11207 3379 11215 $$ LEINS
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 6:38 PM MST | Special Weather Statement | PSR | 52 min | |
| Sep 10, 7:34 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 116 min |
| Sep 10, 8:33 PM MST | Areal Flood Advisory | PSR | Maricopa | 117 min |
| Sep 10, 9:26 PM MST | Flash Flood Warning | PSR | Maricopa | 79 min |
| Sep 10, 9:59 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 2 hr |
| Sep 10, 10:14 PM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 2 hr |
| Sep 10, 10:45 PM MST | Flash Flood Warning | PSR | Maricopa | 60 min |
| Sep 10, 11:03 PM MST | Areal Flood Advisory | PSR | Maricopa | 117 min |
| Sep 10, 11:12 PM MST | Areal Flood Advisory | PSR | La Paz, Yuma | 5 hr |
| Sep 11, 1:05 AM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Sep 11, 1:18 AM MST | Flash Flood Warning | PSR | La Paz | 3 hr |
| Sep 11, 3:42 AM MST | Flash Flood Watch | PSR | 11 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.