Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 23, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 28, 2012, 4:09 PM MST for Gila County, Maricopa County, Arizona. It was in force for 3 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 28, 2012, 4:09 PM MST (23:09 UTC)
- Expired
- Jul 28, 2012, 7:15 PM MST
- In force
- 3 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Gila County, AZ, Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 75 km from the middle of the area, began a volume at 23:11 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, 11.2 hours before the alert went out and 73 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
- 44 J/kg
- Mixed-layer CIN
- -207 J/kg
- Mixed-layer LCL
- 2540 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
771 WGUS55 KPSR 282309 FFWPSR AZC007-013-290045- /O.NEW.KPSR.FF.W.0023.120728T2309Z-120729T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 409 PM MST SAT JUL 28 2012 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA... EXTREME NORTHEASTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES SYCAMORE CREEK...SUNFLOWER... * UNTIL 545 PM MST * AT 402 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. 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. && LAT...LON 3401 11144 3384 11144 3384 11152 3400 11154 $$ NOLTE
4 follow-up statements
326 WGUS75 KPSR 282340 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 440 PM MST SAT JUL 28 2012 AZC007-013-290045- /O.CON.KPSR.FF.W.0023.000000T0000Z-120729T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GILA AZ-MARICOPA AZ- 440 PM MST SAT JUL 28 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR EXTREME NORTHEASTERN MARICOPA AND WEST CENTRAL GILA COUNTIES... AT 434 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A THUNDERSTORM PRODUCING FLASH FLOODING THE SUNFLOWER BURN AREA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SYCAMORE CREEK...SUNFLOWER... ADDITIONAL STORMS DEVELOPING ON THE SOUTHERN EDGE OF THE BURN AREA WILL LIKELY PRODUCE MORE RAINFALL DOWNSTREAM. THE RAIN WILL PRODUCE HIGH WATER IN CREEKS AND WASHES ACCOMPANIED BY MUD...ROCKS...AND DEBRIS. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE BANKS OF SYCAMORE CREEK OR OTHER NEARBY DRAINAGE AREAS MOVE IMMEDIATELY TO HIGHER GROUND. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. TURN AROUND DONT DROWN. LIFE-THREATENING FLOODING OF CREEKS...ROADS AND NORMALLY DRY WASHES IS LIKELY. THE HEAVY RAINS WILL TRIGGER MUD AND DEBRIS FLOWS...AND ROCKSLIDES IN STEEP TERRAIN...ESPECIALLY NEAR THE BURN AREA. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT. && LAT...LON 3401 11144 3384 11144 3384 11152 3400 11154 $$ DEWEY
601 WGUS55 KPSR 290040 FFWPSR AZC007-013-290215- /O.EXT.KPSR.FF.W.0023.000000T0000Z-120729T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 540 PM MST SAT JUL 28 2012 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS EXTENDED THE * FLASH FLOOD WARNING FOR... WEST CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA... EXTREME NORTHEASTERN MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES SYCAMORE CREEK...SUNFLOWER... * UNTIL 715 PM MST * AT 535 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED CONTINUED HEAVY RAINFALL OVER THE SUNFLOWER BURN AREA. THE RAIN WILL PRODUCE SIGNIFICANT FLOW 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. 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. && LAT...LON 3401 11144 3384 11144 3384 11152 3400 11154 $$ NOLTE
560 WGUS75 KPSR 290111 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 611 PM MST SAT JUL 28 2012 AZC007-013-290215- /O.CON.KPSR.FF.W.0023.000000T0000Z-120729T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GILA AZ-MARICOPA AZ- 611 PM MST SAT JUL 28 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MST FOR EXTREME NORTHEASTERN MARICOPA AND WEST CENTRAL GILA COUNTIES... AT 608 PM MST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE SUNFLOWER BURN AREA...AS WELL AS WATER IN CREEKS RUNNING OVER THE BANKS AND WATER MOVING ONTO THE ROADS. THE SYCAMORE WASH WAS REPORTED TO BE FLOODING AND WATER NEARING HOMES IN THE AREA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SYCAMORE CREEK...SUNFLOWER...ROUND VALLEY... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE BANKS OF SYCAMORE CREEK OR OTHER NEARBY DRAINAGE AREAS MOVE IMMEDIATELY TO HIGHER GROUND. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. TURN AROUND DONT DROWN. LIFE-THREATENING FLOODING OF CREEKS...ROADS AND NORMALLY DRY WASHES IS LIKELY. THE HEAVY RAINS WILL TRIGGER MUD AND DEBRIS FLOWS...AND ROCKSLIDES IN STEEP TERRAIN...ESPECIALLY NEAR THE BURN AREA. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT. IF YOU ARE NEAR THE BANKS OF SYCAMORE CREEK OR OTHER NEARBY DRAINAGE AREAS MOVE IMMEDIATELY TO HIGHER GROUND. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. TURN AROUND DONT DROWN. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT. && LAT...LON 3401 11144 3384 11144 3384 11152 3400 11154 $$ DEWEY
394 WGUS75 KPSR 290212 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 712 PM MST SAT JUL 28 2012 AZC007-013-290217- /O.EXP.KPSR.FF.W.0023.000000T0000Z-120729T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GILA AZ-MARICOPA AZ- 712 PM MST SAT JUL 28 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 715 PM MST FOR EXTREME NORTHEASTERN MARICOPA AND WEST CENTRAL GILA COUNTIES... THE HEAVIEST RAINFALL HAS ENDED ACROSS THE MAJORITY OF THE SUNFLOWER BURN AREA. CONTINUED FLOW THROUGH SYCAMORE CREEK IS EXPECTED...HOWEVER WATER LEVELS HAVE DROPPED SLIGHTLY FROM EARLIER LEVELS AND CONTINUE TO RECEDE. LIGHT SHOWERS MAY CONTINUE IN THE AREA OF THE BURN SITE THROUGH THE EVENING...HOWEVER THEY ARE EXPECTED TO BE VERY LIGHT. IF ADDITIONAL FLOODING OR IMPACTS ARE OBSERVED ALONG SYCAMORE CREEK...PLEASE ALERT LAW ENFORCEMENT. LAT...LON 3401 11144 3384 11144 3384 11152 3400 11154 $$ NOLTE
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 3:43 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 32 min |
| Jul 28, 4:32 PM MST | Areal Flood Advisory | PSR | Gila | 118 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.