Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 21, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 24, 2012, 12:18 AM MST for Gila County, Maricopa County, Arizona. It was in force for 117 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
- Jul 24, 2012, 12:18 AM MST (07:18 UTC)
- Expired
- Jul 24, 2012, 2:15 AM MST
- In force
- 117 min
- 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), 73 km from the middle of the area, began a volume at 07:19 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, 7.3 hours before the alert went out and 71 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
- 251 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 2393 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
865 WGUS55 KPSR 240718 FFWPSR AZC007-013-240915- /O.NEW.KPSR.FF.W.0021.120724T0718Z-120724T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 1218 AM MST TUE JUL 24 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 215 AM MST * AT 1212 AM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED HEAVY RAIN 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 3400 11154 3401 11143 3383 11145 3383 11153 $$ MEYERS
3 follow-up statements
200 WGUS75 KPSR 240754 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 1254 AM MST TUE JUL 24 2012 AZC007-013-240915- /O.CON.KPSR.FF.W.0021.000000T0000Z-120724T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GILA AZ-MARICOPA AZ- 1254 AM MST TUE JUL 24 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM MST FOR EXTREME NORTHEASTERN MARICOPA AND WEST CENTRAL GILA COUNTIES... AT 1242 AM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO DETECT SHOWERS AND THUNDERSTORMS PRODUCING HEAVY RAINFALL OVER THE SUNFLOWER BURN AREA. GAUGES IN THE BURN AREA REPORT UP TO ONE HALF INCH OF RAIN HAS FALLEN OVER SUNFLOWER BURN IN THE LAST 30 MINUTES. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SYCAMORE CREEK. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE BANKS OF SYCAMORE CREEK OR OTHER NEARBY DRAINAGE AREAS MOVE IMMEDIATELY TO HIGHER GROUND. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. TURN AROUND DONT DROWN. LIFE-THREATENING FLOODING OF CREEKS...ROADS AND NORMALLY DRY WASHES IS LIKELY. THE HEAVY RAINS WILL TRIGGER MUD AND DEBRIS FLOWS...AND ROCKSLIDES IN STEEP TERRAIN...ESPECIALLY NEAR THE BURN AREA. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT. && LAT...LON 3400 11154 3401 11143 3383 11145 3383 11153 $$ MEYERS
176 WGUS75 KPSR 240832 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 132 AM MST TUE JUL 24 2012 AZC007-013-240915- /O.CON.KPSR.FF.W.0021.000000T0000Z-120724T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GILA AZ-MARICOPA AZ- 132 AM MST TUE JUL 24 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM MST FOR EXTREME NORTHEASTERN MARICOPA AND WEST CENTRAL GILA COUNTIES... AT 117 AM MST...SHOWER AND THUNDERSTORM ACTIVITY HAS DIMINISHED OVER THE BURN AREA AT THIS TIME. HOWEVER...STORMS ARE EXPECTED TO REDEVELOP AND MOVE BACK INTO THE AREA WITHIN THE NEXT HOUR. RADAR ESTIMATES LIGHT RAINFALL AMOUNTS CONTINUE TO FALL...AND THIS WILL CONTRIBUTE TO THE RUNOFF ALREADY FLOWING INTO SYCAMORE CREEK AND SMALLER WASHES WITHIN THE BURN AREA. 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 3400 11154 3401 11143 3383 11145 3383 11153 $$ MEYERS
215 WGUS75 KPSR 240914 FFSPSR FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 214 AM MST TUE JUL 24 2012 AZC007-013-240923- /O.EXP.KPSR.FF.W.0021.000000T0000Z-120724T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GILA AZ-MARICOPA AZ- 214 AM MST TUE JUL 24 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 215 AM MST FOR EXTREME NORTHEASTERN MARICOPA AND WEST CENTRAL GILA COUNTIES... HEAVY RAINFALL HAS ENDED ACROSS THE SUNFLOWER BURN AREA. WHILE ADDITIONAL SHOWERS ARE POSSIBLE OVER THE NEXT HOUR...THE THREAT FOR ADDITIONAL HEAVY RAIN ACROSS THE BURN SITE HAS DIMINISHED AND THE WARNING WILL BE ALLOWED TO EXPIRE. IF YOU HAVE OBSERVED FLOODING ALONG SYCAMORE CREEK...PLEASE REPORT IT TO THE APPROPRIATE LAW ENFORCEMENT AGENCY. LAT...LON 3400 11154 3401 11143 3383 11145 3383 11153 $$ LEINS
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 5:25 PM MST | Special Weather Statement | PSR | Pinal | 50 min |
| Jul 23, 5:49 PM MST | Special Weather Statement | PSR | Pinal | 41 min |
| Jul 23, 6:24 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 51 min |
| Jul 23, 7:16 PM MST | Special Weather Statement | PSR | 44 min | |
| Jul 24, 2:43 AM MST | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Jul 24, 6:14 AM MST | Areal Flood Advisory | PSR | Pinal | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.