Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 49, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Sep 15, 2011, 11:18 AM MST for Apache County, Arizona. It was in force for 57 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
- Sep 15, 2011, 11:18 AM MST (18:18 UTC)
- Expired
- Sep 15, 2011, 12:15 PM MST
- In force
- 57 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Apache County, AZ
The radar
The Flagstaff radar (KFSX), 211 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
Tuscon, AZ (KTUS), launched 12:00Z, 6.3 hours before the alert went out and 248 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
- 927 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1450 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
885 WGUS55 KFGZ 151818 FFWFGZ AZC001-151915- /O.NEW.KFGZ.FF.W.0049.110915T1818Z-110915T1915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1118 AM MST THU SEP 15 2011 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN APACHE COUNTY IN NORTHEAST ARIZONA... * UNTIL 1215 PM MST * AT 1112 AM MST...HEAVY RAIN WAS INDICATED OVER PORTIONS OF THE WALLOW BURN AREA SOUTH OF ALPINE. HIGHWAYS 191 AND 180 SOUTH AND EAST OF ALPINE MAY BE AFFECTED. * 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... PACE CREEK...TURKEY CREEK...CANYON CREEK...COLEMAN CREEK...STONE CREEK AND SAN FRANCISCO RIVER. LIFE-THREATENING FLOODING OF CREEKS...ROADS...AND NORMALLY DRY WASHES IS LIKELY. THE HEAVY RAINS WILL LIKELY TRIGGER ROCKSLIDES... MUDSLIDES...AND DEBRIS FLOWS IN STEEP TERRAIN...ESPECIALLY NEAR THE BURN AREA. && LAT...LON 3378 10904 3378 10919 3385 10915 3385 10905 $$ DJO
2 follow-up statements
744 WGUS55 KFGZ 151825 CCA FFWFGZ AZC001-151915- /O.COR.KFGZ.FF.W.0049.110915T1818Z-110915T1915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING...CORRECTED NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1118 AM MST THU SEP 15 2011 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN APACHE COUNTY IN NORTHEAST ARIZONA... THIS INCLUDES THE COMMUNITY OF ALPINE... * UNTIL 1215 PM MST * AT 1112 AM MST...HEAVY RAIN WAS INDICATED OVER PORTIONS OF THE WALLOW BURN AREA SOUTH OF ALPINE WHICH WILL LIKELY RESULT IN FLASH FLOODING...MUD...ROCK...AND DEBRIS SLIDES. HIGHWAYS 191 AND 180 SOUTH AN EAST OF ALPINE MAY BE AFFECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES... PACE CREEK...TURKEY CREEK...CANYON CREEK...COLEMAN CREEK...STONE CREEK AND SAN FRANCISCO RIVER. LIFE-THREATENING FLOODING OF CREEKS...ROADS...AND NORMALLY DRY WASHES IS LIKELY. THE HEAVY RAINS WILL LIKELY TRIGGER ROCKSLIDES... MUDSLIDES...AND DEBRIS FLOWS IN STEEP TERRAIN...ESPECIALLY NEAR THE BURN AREA. && LAT...LON 3378 10904 3378 10919 3385 10915 3385 10905 $$ DJO
722 WGUS75 KFGZ 151913 FFSFGZ FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1213 PM MST THU SEP 15 2011 AZC001-151920- /O.EXP.KFGZ.FF.W.0049.000000T0000Z-110915T1915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ APACHE AZ- 1213 PM MST THU SEP 15 2011 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 1215 PM MST FOR SOUTHEASTERN APACHE COUNTY... THE FLASH FLOOD WARNING FOR SOUTHEAST APACHE COUNTY SOUTH AND EAST OF ALPINE WILL BE ALLOWED TO EXPIRE AT 1215 PM MST. HEAVY RAINFALL HAS ENDED AND ADDITIONAL FLOODING OR MUD... ROCK...OR DEBRIS SLIDES ARE NOT EXPECTED. LAT...LON 3378 10904 3378 10919 3385 10915 3385 10905 $$ DJO
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 5:45 PM MST | Severe Thunderstorm Warning | FGZ | Apache, Gila, Navajo | 30 min |
| Sep 14, 6:23 PM MST | Areal Flood Advisory | FGZ | Coconino, Yavapai | 3 hr |
| Sep 14, 9:45 PM MST | Areal Flood Advisory | FGZ | Coconino, Yavapai | 105 min |
| Sep 15, 8:59 AM MST | Areal Flood Advisory | FGZ | Coconino | 3 hr |
| Sep 15, 11:43 AM MST | Tornado Warning | FGZ | Navajo | 32 min |
| Sep 15, 12:41 PM MST | Special Weather Statement | FGZ | Navajo | 19 min |
| Sep 15, 3:05 PM MST | Special Weather Statement | FGZ | Coconino | 10 min |
| Sep 15, 3:22 PM MST | Special Weather Statement | FGZ | Coconino | 8 min |
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.