Alert archive / Arizona / Red Flag Warnings in 2008

Red Flag Warning 16, NWS Flagstaff, AZ

May 12, 2008Apache County, Coconino County, Navajo County, Arizona

NWS Flagstaff, AZ issued this red flag warning at May 12, 2008, 4:57 AM MST for Apache County, Coconino County, Navajo County, Arizona. It took effect at May 12, 2008, 9:00 AM MST. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 12, 2008, 4:57 AM MST (11:57 UTC)
In effect from
May 12, 2008, 9:00 AM MST
Expired
May 12, 2008, 7:00 PM MST
In force
10 hr
Issued by
NWS Flagstaff, AZ

Counties Apache County, AZ, Coconino County, AZ, Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 11:55 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 00:00Z, 12.0 hours before the alert went out and 121 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 00:00Z on 2008-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 00:00Z on 2008-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4801 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
87 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 red flag 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 red flag warning went out at May 12, 3:35 AM MST, 1 hour 22 minutes earlier.

Area forecast discussion, May 12, 3:35 AM MST, 1 hour 22 minutes before
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Hazardous weather outlook, May 11, 3:36 PM MST, 13 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
336 PM MST SUN MAY 11 2008

AZZ004>018-037>040-120700-
KAIBAB PLATEAU-MARBLE AND GLEN CANYONS-GRAND CANYON COUNTRY-
COCONINO PLATEAU-YAVAPAI COUNTY MOUNTAINS-
NORTHEAST PLATEAUS AND MESAS HWY 264 NORTHWARD-CHINLE VALLEY-
CHUSKA MOUNTAINS AND DEFIANCE PLATEAU-
LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY-
LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY-
LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY-
WESTERN MOGOLLON RIM-EASTERN MOGOLLON RIM-WHITE MOUNTAINS-
NORTHERN GILA COUNTY-YAVAPAI COUNTY VALLEYS AND BASINS-
OAK CREEK AND SYCAMORE CANYONS-BLACK MESA AREA-
NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264-
336 PM MST SUN MAY 11 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
ARIZONA...NORTH CENTRAL ARIZONA...NORTHEAST ARIZONA AND WEST
CENTRAL ARIZONA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO WEATHER HAZARDS ARE EXPECTED THIS EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

AN APPROACHING STORM SYSTEM AND COLD FRONT WILL PRODUCE DRY AND
WINDY CONDITIONS ON MONDAY. A FIRE WEATHER WATCH HAS BEEN ISSUED
FOR MOST FIRE WEATHER ZONES IN NORTHERN ARIZONA EXCEPT FOR LOWER
ELEVATION AREAS IN YAVAPAI COUNTY...NORTHERN GILA COUNTY AND THE
SEDONA AND OAK CREEK CANYON AREAS.

THE COLD FRONT IS FORECAST TO MOVE ACROSS ARIZONA STARTING TUESDAY
MORNING NEAR THE UTAH BORDER AND MOVING DOWN INTO THE WHITE
MOUNTAINS BY TUESDAY AFTERNOON. THIS STORM SYSTEM IS EXPECTED TO
PRODUCE WIDESPREAD LIGHT RAIN SHOWERS...WITH SNOW SHOWERS IN THE
HIGH COUNTRY AND A FEW ISOLATED THUNDERSTORMS. ON TUESDAY
MORNING SNOW ACCUMULATIONS WILL BE LIMITED TO THE UPPER ELEVATION
AREAS OF THE KAIBAB PLATEAU AND SAN FRANSISCO PEAKS WITH AROUND 1
INCH OF SNOWFALL...WITH TRACE AMOUNTS POSSIBLE FOR OTHER HIGH
ELEVATION AREAS ABOVE 7000 FEET. THIS COLD FRONT IS EXPECTED TO
PRODUCE LESS THAN ONE QUARTER OF AN INCH OF LIQUID PRECIPITATION
...ALTHOUGH LOCALLY HIGHER AMOUNTS ARE POSSIBLE IN THE STRONGEST
SHOWER BANDS.

RB

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 3:29 AM MSTWind AdvisoryFGZApache, Coconino, Navajo17 hr

Nearby

Red Flag Warnings in Arizona, 2008Every red flag warning in 2008

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.