Alert archive / Arizona / Flash Flood Warnings in 2011

Flash Flood Warning 7, NWS Flagstaff, AZ

July 6, 2011Coconino County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Jul 6, 2011, 2:05 PM MST for Coconino County, Arizona. It was in force for 85 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 6, 2011, 2:05 PM MST (21:05 UTC)
Expired
Jul 6, 2011, 3:30 PM MST
In force
85 min
Issued by
NWS Flagstaff, AZ
Area
Storm-based polygon
Flood severity
None

County Coconino County, AZ

The radar

The Flagstaff radar (KFSX), 95 km from the middle of the area, began a volume at 21:08 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

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.1 hours before the alert went out and 24 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.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2011-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 235 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2011-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
235 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1497 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

330 
WGUS55 KFGZ 062105
FFWFGZ
AZC005-062230-
/O.NEW.KFGZ.FF.W.0007.110706T2105Z-110706T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
205 PM MST WED JUL 6 2011

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA...

* UNTIL 330 PM MST

* AT 154 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAIN FALLING OVER THE NORTHERN 
  PORTIONS OF THE SCHULTZ BURN AREA...WITH AN AUTOMATED RAIN GAGE
  RECEIVING NEARLY AN INCH OF RAIN IN LESS THAN 30 MINUTES. FLASH 
  FLOODING IS LIKELY TO DEVELOP OVER THE BURNED AREA...AND SHOULD
  REACH THE WUPATKI TRAILS AND FERNWOOD AREAS SHORTLY. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FERNWOOD
  AND WUPATKI TRAILS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE HEAVY RAIN WILL LIKELY TRIGGER FLASH FLOODS WITHIN VULNERABLE
DRAINAGES IN AND DOWNSTREAM OF THE SCHULTZ FIRE BURN AREA. NORMALLY
DRY WASHES IN THE WARNING AREA WILL BECOME QUICKLY INUNDATED BY
FLOODWATERS.

AREAS IMPACTED BY THIS WARNING INCLUDE THOSE COMMUNITIES NORTHEAST OF
FLAGSTAFF ALONG AND NEAR HIGHWAY 89 NORTH OF SILVER SADDLE 
ROAD...INCLUDING BUT NOT LIMITED TO WUPATKI TRAILS AND FERNWOOD 
NEIGHBORHOODS.

AT THIS TIME THE WARNING DOES NOT INCLUDE THE DONEY PARK AREA EAST OF
HIGHWAY 89.

&&

LAT...LON 3540 11161 3539 11155 3531 11155 3532 11164

$$
JJ
2 follow-up statements
880 
WGUS75 KFGZ 062136
FFSFGZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
236 PM MST WED JUL 6 2011

AZC005-062230-
/O.CON.KFGZ.FF.W.0007.000000T0000Z-110706T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO AZ-
236 PM MST WED JUL 6 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR
CENTRAL COCONINO COUNTY...

AT 222 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED THAT HEAVY 
RAIN HAD MOVED NORTH OF THE SCHULTZ BURN AREA. HOWEVER...RADAR AND 
AUTOMATED RAIN GAGES SHOWED RAINFALL AMOUNTS AROUND 1 INCH BETWEEN 
130 PM AND 200 PM MST OVER THE NORTHERN SECTIONS OF THE BURNED AREA. 
FLASH FLOODING IS MOST LIKELY IN THE WUPATKI TRAILS AND FERNWOOD 
NEIGHBORHOODS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE HEAVY RAIN WILL LIKELY TRIGGER FLASH FLOODS WITHIN VULNERABLE
DRAINAGES IN AND DOWNSTREAM OF THE SCHULTZ FIRE BURN AREA. NORMALLY
DRY WASHES IN THE WARNING AREA WILL BECOME QUICKLY INUNDATED BY
FLOODWATERS.

AREAS IMPACTED BY THIS WARNING INCLUDE THOSE COMMUNITIES NORTHEAST OF
FLAGSTAFF ALONG AND NEAR HIGHWAY 89 NORTH OF SILVER SADDLE 
ROAD...INCLUDING BUT NOT LIMITED TO THE WUPATKI TRAILS...AND 
FERNWOOD NEIGHBORHOODS.

AT THIS TIME THE WARNING DOES NOT INCLUDE THE DONEY PARK AREA EAST OF
HIGHWAY 89.

&&

LAT...LON 3540 11161 3539 11155 3531 11155 3532 11164

$$
JJ
885 
WGUS75 KFGZ 062235
FFSFGZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
335 PM MST WED JUL 6 2011

AZC005-062240-
/O.EXP.KFGZ.FF.W.0007.000000T0000Z-110706T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO AZ-
335 PM MST WED JUL 6 2011

...THE FLASH FLOOD WARNING HAS EXPIRED FOR CENTRAL COCONINO COUNTY...

RAIN ENDED AROUND 2 PM MST OVER THE SCHULTZ BURN AREA. AT 325 
PM...COUNTY EMERGENCY MANAGEMENT REPORTED THAT NO FLOODING HAS 
OCCURRED IN THE NEIGHBORHOODS DOWNSTREAM FROM THE BURNED AREA 
INCLUDING WUPATKI TRAILS AND FERNWOOD. THE FLASH FLOOD WARNING WILL 
BE ALLOWED TO EXPIRE AT 330 PM MST.

LAT...LON 3540 11161 3539 11155 3531 11155 3532 11164

$$
JJ

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 5:02 PM MSTSevere Thunderstorm WarningFGZYavapai28 min
Jul 5, 5:04 PM MSTSpecial Weather StatementFGZYavapai41 min
Jul 5, 5:30 PM MSTSevere Thunderstorm WarningFGZYavapai30 min
Jul 5, 5:58 PM MSTFlash Flood WarningFGZYavapai77 min
Jul 5, 7:25 PM MSTSevere Thunderstorm WarningFGZYavapai50 min
Jul 5, 7:56 PM MSTFlash Flood WarningFGZYavapai94 min
Jul 6, 1:26 PM MSTSpecial Weather StatementFGZ34 min
Jul 6, 1:51 PM MSTSpecial Weather StatementFGZ24 min
Jul 6, 1:57 PM MSTAreal Flood AdvisoryFGZNavajo91 min
Jul 6, 4:11 PM MSTSpecial Weather StatementFGZ49 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.