Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 13, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jul 9, 2011, 6:54 PM MDT for Navajo County, Arizona. It was in force for 51 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 9, 2011, 6:54 PM MDT (00:54 UTC)
- Expired
- Jul 9, 2011, 7:45 PM MDT
- In force
- 51 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 00:54 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, 0.9 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
- 69 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 3173 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
292 WGUS55 KFGZ 100054 FFWFGZ AZC017-100145- /O.NEW.KFGZ.FF.W.0013.110710T0054Z-110710T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 554 PM MST SAT JUL 9 2011 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME SOUTHEASTERN NAVAJO COUNTY IN NORTHEAST ARIZONA... * UNTIL 645 PM MST * AT 549 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING HEAVY RAINFALL OVER THE LOCUST BURN AREA NEAR 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 10996 3384 10996 3384 10998 $$ MCS
1 follow-up statement
726 WGUS75 KFGZ 100140 FFSFGZ FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 640 PM MST SAT JUL 9 2011 AZC017-100147- /O.EXP.KFGZ.FF.W.0013.000000T0000Z-110710T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NAVAJO AZ- 640 PM MST SAT JUL 9 2011 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 PM MST FOR EXTREME SOUTHEASTERN NAVAJO COUNTY... THE THUNDERSTORM RESPONSIBLE FOR THE FLASH FLOOD WARNING HAS MOVED OUT OF THE BURN AREA. ALTHOUGH NO SIGNIFICANT FLOODING HAS BEEN REPORTED...RADAR ESTIMATES INDICATE OVER 0.40 INCHES FELL OVER NORTHERN PORTIONS OF THE BURN AREA. LAT...LON 3387 10998 3387 10996 3384 10996 3384 10998 $$ MCS
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 3:49 PM MDT | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
| Jul 10, 4:28 PM MDT | Flash Flood Warning | FGZ | Coconino | 2 hr |
Nearby
Flash Flood Warnings in Arizona, 2011Every flash flood warning in 2011
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.