Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 20, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Aug 20, 2012, 3:58 PM MST for Yavapai 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
- Aug 20, 2012, 3:58 PM MST (22:58 UTC)
- Expired
- Aug 20, 2012, 7:00 PM MST
- In force
- 3 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 109 km from the middle of the area, began a volume at 22:59 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, 11.0 hours before the alert went out and 101 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
- 478 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 1794 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
331 WGUS55 KFGZ 202258 FFWFGZ AZC025-210200- /O.NEW.KFGZ.FF.W.0020.120820T2258Z-120821T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 358 PM MST MON AUG 20 2012 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL YAVAPAI COUNTY IN WEST CENTRAL ARIZONA... * UNTIL 700 PM MST * AT 354 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN FROM A THUNDERSTORM OVER THE GLADIATOR FIRE AREA. * THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... TURKEY CREEK...POLAND CREEK...TOWERS CREEK...CRAZY BASIN CREEK...WOLF CREEK...BEAR CREEK...TUSCUMBIA CREEK...PINE CREEK...ARRASTRA CREEK AND MINNEHAHA CREEK. 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 3434 11237 3432 11225 3419 11228 3422 11241 $$ MAS
1 follow-up statement
594 WGUS75 KFGZ 210158 FFSFGZ FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 658 PM MST MON AUG 20 2012 AZC025-210206- /O.EXP.KFGZ.FF.W.0020.000000T0000Z-120821T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ YAVAPAI AZ- 658 PM MST MON AUG 20 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM MST FOR SOUTH CENTRAL YAVAPAI COUNTY... HEAVY RAIN FROM A THUNDERSTORM OVER THE GLADIATOR FIRE AREA HAS ENDED AND THE WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 3434 11237 3432 11225 3419 11228 3422 11241 $$ MAS
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 5:27 PM MST | Special Weather Statement | FGZ | Gila | 48 min |
| Aug 19, 6:21 PM MST | Flash Flood Warning | FGZ | Coconino | 13 hr |
| Aug 19, 7:32 PM MST | Areal Flood Advisory | FGZ | Yavapai | 118 min |
| Aug 20, 1:16 PM MST | Areal Flood Advisory | FGZ | Apache | 2 hr |
| Aug 20, 2:15 PM MST | Areal Flood Advisory | FGZ | Coconino, Navajo | 3 hr |
| Aug 20, 4:17 PM MST | Special Weather Statement | FGZ | 43 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.