Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 16, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Aug 16, 2012, 6:45 PM MST for Yavapai 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
- Aug 16, 2012, 6:45 PM MST (01:45 UTC)
- Expired
- Aug 16, 2012, 8:45 PM MST
- In force
- 2 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 108 km from the middle of the area, began a volume at 01:46 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, 1.8 hours before the alert went out and 100 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
- 934 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1678 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
438 WGUS55 KFGZ 170145 FFWFGZ AZC025-170345- /O.NEW.KFGZ.FF.W.0016.120817T0145Z-120817T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 645 PM MST THU AUG 16 2012 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL YAVAPAI COUNTY IN ARIZONA... * UNTIL 845 PM MST * AT 641 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN AND FLASH FLOODING FROM A THUNDERSTORM OVER THE GLADIATOR BURN AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE HEAVY RAIN WILL LIKELY TRIGGER LIFE-THREATENING FLASH FLOODS...AS WELL AS MUDSLIDES...ROCKSLIDES...AND DEBRIS FLOWS WITHIN AND DOWNSTREAM OF THE GLADIATOR FIRE BURN AREA. ROADWAYS IN THE AREA WILL LIKELY BE INUNDATED AND WASHED OUT. STREAMS IN THE AREA WILL FLOW FAR ABOVE TYPICAL LEVELS AND WILL CARRY HEAVY AMOUNTS OF SEDIMENT. AREAS IMPACTED BY THIS WARNING INCLUDE THE GLADIATOR FIRE BURN AREA...THE COMMUNITY OF CROWN KING...CROWN KING ROAD...SENATOR HIGHWAY...AND POTENTIALLY SECTIONS OF WAGONER ROAD. && LAT...LON 3435 11234 3429 11225 3419 11229 3423 11241 $$ DB
1 follow-up statement
431 WGUS75 KFGZ 170244 FFSFGZ FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 744 PM MST THU AUG 16 2012 AZC025-170345- /O.CON.KFGZ.FF.W.0016.000000T0000Z-120817T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ YAVAPAI AZ- 744 PM MST THU AUG 16 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MST FOR SOUTH CENTRAL YAVAPAI COUNTY... AT 742 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE SHOWERS AND THUNDERSTORMS PRODUCING MODERATE TO HEAVY RAINFALL AND FLASH FLOODING OVER THE GLADIATOR FIRE BURN AREA. RADAR ESTIMATED RAINFALL AMOUNTS OF ONE-HALF INCH TO ONE INCH HAVE FALLEN ACROSS THE EASTERN AND NORTHERN PORTIONS OF THE BURN AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF ONE-HALF TO ONE INCH ARE POSSIBLE IN THE WARNED AREA OVER THE NEXT HOUR. && LAT...LON 3435 11234 3429 11225 3419 11229 3423 11241 $$ DB
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 5:43 PM MST | Areal Flood Advisory | FGZ | Yavapai | 2 hr |
| Aug 16, 5:54 PM MST | Special Weather Statement | FGZ | Yavapai | 51 min |
| Aug 16, 6:02 PM MST | Areal Flood Advisory | FGZ | Coconino | 4 hr |
| Aug 16, 8:39 PM MST | Flash Flood Warning | FGZ | Yavapai | 111 min |
| Aug 17, 1:24 PM MST | Special Weather Statement | FGZ | Coconino | 21 min |
| Aug 17, 4:52 PM MST | Areal Flood Advisory | FGZ | Coconino | 3 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.