Alert archive / Arizona / Flash Flood Warnings in 2006

Flash Flood Warning 57, NWS Flagstaff, AZ

August 22, 2006Coconino County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Aug 22, 2006, 3:06 PM MST for Coconino County, Arizona. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 22, 2006, 3:06 PM MST (22:06 UTC)
Expired: Aug 22, 2006, 3:30 PM MST
In force: 24 min
Issued by: NWS Flagstaff, AZ
Area: Counties, with a storm outline in the text

County Coconino County, AZ

The radar

The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 22:09 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, 10.1 hours before the alert went out and 68 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 66 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 1598 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Aug 22, 2:30 PM MST, 36 minutes earlier.

Area forecast discussion, Aug 22, 2:30 PM MST, 36 minutes before

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Hazardous weather outlook, Aug 22, 10:00 AM MST, 5 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1000 AM MST TUE AUG 22 2006

AZZ004>018-037>040-230700-
WESTERN MOGOLLON RIM-GRAND CANYON COUNTRY-YAVAPAI COUNTY MOUNTAINS-
YAVAPAI COUNTY VALLEYS AND BASINS-OAK CREEK AND SYCAMORE CANYONS-
MARBLE AND GLEN CANYONS-KAIBAB PLATEAU-COCONINO PLATEAU-
NORTHEAST PLATEAU AND MESAS HWY 264 NORTHWARD-
NORTHEAST PLATEAU AND MESAS SOUTH OF HWY 264-
CHINLE VALLEY-CHUSKA MOUNTAINS AND DEFIANCE PLATEAU-
BLACK MESA AREA-LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY-
LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY-
LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY-
EASTERN MOGOLLON RIM-WHITE MOUNTAINS-NORTHERN GILA COUNTY-
1000 AM MST TUE AUG 22 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN
GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA.

.DAY ONE...TODAY
THE MAIN WEATHER THREAT TODAY IS LOCALLY HEAVY RAIN FROM SLOW
MOVING THUNDERSTORMS. SCATTERED STORMS ARE EXPECTED TO DEVELOP BY
EARLY AFTERNOON OVER THE HIGHER TERRAIN. STORMS ARE THEN EXPECTED TO
MOVE OFF THE RIM INTO NRN GILA AND YAVAPAI COUNTIES DURING THE
AFTERNOON. THERE IS QUITE A BIT OF CLOUD COVER EAST OF A LINE FROM
KAYENTA TO PHOENIX...AND THIS MAY DELAY THE START OF STORMS TIL MID
AFTERNOON IN THESE AREAS.

AN WEAK UPPER LEVEL DISTURBANCE IS FORECAST TO MOVE OVER
NAVAJO...APACHE AND NRN GILA COUNTIES TONIGHT. THIS WILL ENHANCE THE
CHANCES OF OVERNIGHT SHOWERS AND THUNDERSTORMS IN THESE AREAS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A MOIST MONSOON AIRMASS IS EXPECTED TO REMAIN OVER THE NORTHLAND FOR
THE NEXT SEVERAL DAYS...LEADING TO SCATTERED AFTERNOON AND EVENING
SHOWERS AND THUNDERSTORMS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Aug 22, 1:57 PM MST, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
157 PM MST TUE AUG 22 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0540 PM     HAIL             BLACK CANYON CITY       34.06N 112.11W
08/21/2006  E1.00 INCH       YAVAPAI            AZ   PUBLIC

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 5:37 PM MST	Flash Flood Warning	FGZ	Yavapai	53 min
Aug 21, 7:23 PM MST	Flash Flood Warning	FGZ	Yavapai	37 min
Aug 22, 3:25 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	35 min

Nearby

Flash Flood Warnings in Arizona, 2006 Every flash flood warning in 2006

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.