Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 9, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jul 28, 2012, 12:18 PM MDT for Navajo County, Arizona. It was in force for 87 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 28, 2012, 12:18 PM MDT (18:18 UTC)
- Expired
- Jul 28, 2012, 1:45 PM MDT
- In force
- 87 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Navajo County, AZ
The radar
The Flagstaff radar (KFSX), 138 km from the middle of the area, began a volume at 18:22 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, 6.3 hours before the alert went out and 191 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.
168 WGUS55 KFGZ 281818 FFWFGZ AZC017-281945- /O.NEW.KFGZ.FF.W.0009.120728T1818Z-120728T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1118 AM MST SAT JUL 28 2012 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME SOUTHEASTERN NAVAJO COUNTY IN NORTHEAST ARIZONA... * UNTIL 1245 PM MST * AT 1108 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR THUNDERSTORMS WITH HEAVY RAINFALL OVER THE LOCUST BURN AREA NEAR WHITERIVER. RAINFALL OF UP AN INCH IN LESS THAN 30 MINUTES WILL BE POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE HEAVY RAIN WILL LIKELY TRIGGER LIFE-THREATENING FLASH FLOODS AND DEBRIS FLOWS WITHIN AND DOWNHILL FROM THE LOCUST FIRE BURN AREA. FLASH FLOODING WILL LIKELY BEGIN WITHIN A FEW MINUTES AND MAY HAVE ALREADY STARTED. IF YOU CAN NOT MOVE SAFELY OUT OF THE WAY OF FLASH FLOODING...IT IS BEST TO SHELTER IN PLACE IN A STURDY STRUCTURE. AREAS IMPACTED BY THIS WARNING INCLUDE THOSE LOCATIONS IN WHITERIVER FROM LOCUST STREET TO KNOTS LANDING ROAD BETWEEN THE BURN AREA AND THE WHITE RIVER...INCLUDING HIGHWAY 73. && LAT...LON 3387 10998 3387 10995 3384 10996 3384 10999 $$ JJ
2 follow-up statements
591 WGUS75 KFGZ 281853 FFSFGZ FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1153 AM MST SAT JUL 28 2012 AZC017-281945- /O.CON.KFGZ.FF.W.0009.000000T0000Z-120728T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NAVAJO AZ- 1153 AM MST SAT JUL 28 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM MST FOR EXTREME SOUTHEASTERN NAVAJO COUNTY... AT 1141 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING HEAVY RAINFALL OVER THE LOCUST BURN AREA NEAR WHITERIVER. AN AUTOMATED RAIN GAGE OVER THE BURN AREA INDICATED CLOSE TO AN INCH OF RAIN HAS FALLEN SINCE 1115 AM MST...WITH ADDITIONAL HEAVY RAIN LIKELY THROUGH 1215 PM MST. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AREAS IMMEDIATELY DOWNSTREAM FROM THE LOCUST BURN AREA...INCLUDING PORTIONS OF ROUTE 73 ON THE NORTH SIDE OF WHITERIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE HEAVY RAIN WILL LIKELY TRIGGER LIFE-THREATENING FLASH FLOODS AND DEBRIS FLOWS WITHIN AND DOWNHILL FROM THE LOCUST FIRE BURN AREA. FLASH FLOODING WILL LIKELY BEGIN WITHIN A FEW MINUTES AND MAY HAVE ALREADY STARTED. IF YOU CAN NOT MOVE SAFELY OUT OF THE WAY OF FLASH FLOODING...IT IS BEST TO SHELTER IN PLACE IN A STURDY STRUCTURE. AREAS IMPACTED BY THIS WARNING INCLUDE THOSE LOCATIONS IN WHITERIVER FROM LOCUST STREET TO KNOTS LANDING ROAD BETWEEN THE BURN AREA AND THE WHITE RIVER...INCLUDING HIGHWAY 73. && LAT...LON 3387 10998 3387 10995 3384 10996 3384 10999 $$ JJ
083 WGUS75 KFGZ 281948 FFSFGZ FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1248 PM MST SAT JUL 28 2012 AZC017-281955- /O.EXP.KFGZ.FF.W.0009.000000T0000Z-120728T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NAVAJO AZ- 1248 PM MST SAT JUL 28 2012 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR EXTREME SOUTHEASTERN NAVAJO COUNTY... AT 1245 PM MST...HEAVY RAIN HAD SHIFTED NORTH OF THE LOCUST BURN AREA AND FLOODING HAS DIMINISHED. LAW ENFORCEMENT REPORTED THAT DEBRIS COVERED PORTIONS OF ROUTE 73 JUST EAST OF THE LOCUST BURN AREA DUE TO THE HEAVY RAINFALL EARLIER. LAT...LON 3387 10998 3387 10995 3384 10996 3384 10999 $$ JJ
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 8:40 PM MDT | Areal Flood Advisory | FGZ | Gila | 2 hr |
| Jul 28, 1:36 PM MDT | Areal Flood Advisory | FGZ | Navajo | 75 min |
| Jul 28, 4:03 PM MDT | Areal Flood Advisory | FGZ | Apache | 117 min |
| Jul 28, 4:49 PM MDT | Special Weather Statement | FGZ | 41 min | |
| Jul 28, 5:42 PM MDT | Special Weather Statement | FGZ | 48 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.