Flash Flood Warning 43, NWS Flagstaff, AZ

534 
WGUS55 KFGZ 122327
FFWFGZ
AZC005-130030-
/O.EXT.KFGZ.FF.W.0043.000000T0000Z-110913T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
427 PM MST MON SEP 12 2011

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA...THIS
  INCLUDES...WATERHOLES CANYON AND ANTELOPE CANYON NEAR SR 98...

* UNTIL 530 PM MST

* AT 420 PM MST...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING   
  IN ANTELOPE CANYON. HEAVY THUNDERSTORMS AFFECTED THE AREA EARLIER
  THIS AFTERNOON...AND LIGHT TO MODERATE RAIN WAS STILL FALLING AS
  OF 420 PM MST. EXPECT LIGHT TO MODERATE FLOWS ON ANTELOPE CREEK TO
  CONTINUE THROUGH 530 PM MST THIS AFTERNOON. THIS WARNING IS AN
  EXTENSION OF THE PREVIOUS WARNING FOR THIS AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3682 11148 3690 11143 3691 11138 3676 11130
      3674 11142

$$

221 
WGUS75 KFGZ 130028
FFSFGZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
528 PM MST MON SEP 12 2011

AZC005-130036-
/O.EXP.KFGZ.FF.W.0043.000000T0000Z-110913T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO AZ-
528 PM MST MON SEP 12 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 530 PM MST FOR NORTH
CENTRAL COCONINO COUNTY...

AT 520 PM MST...FLAGSTAFF DOPPLER RADAR INDICATED THAT RAINFALL HAD 
ENDED ACROSS THE WARNING AREA. SOME LIGHT FLOWS MAY PERSIST IN 
ANTELOPE CREEK INTO THE EARLY EVENING HOURS...BUT...THE THREAT FOR 
FLASH FLOODING HAS ENDED. PLEASE EXERCISE CAUTION IF TRAVELING IN OR 
AROUND SLOT CANYONS IN THIS AREA FOR THE REMAINDER OF THIS EVENING.

LAT...LON 3682 11148 3690 11143 3691 11138 3676 11130
      3674 11142

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
915 AM MST MON SEP 12 2011

.SYNOPSIS...A LOW PRESSURE SYSTEM OVER THE SOUTHWESTERN STATES WILL
BRING A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH WEDNESDAY.
COOLER THAN NORMAL TEMPERATURES WILL CONTINUE. EXPECT A SIGNIFICANT
DRYING TREND BY THE END OF THE WEEK.

&&

.DISCUSSION...AN UPPER LOW OVER SOUTHERN CALIFORNIA WILL CONTINUE
TO STREAM MOISTURE AND DYNAMICS OVER ARIZONA THROUGH WEDNESDAY. LOW
LEVEL SHEAR COUPLED WITH MODERATE INSTABILITY AND DECENT DIVERGENCE
ALOFT WILL MAKE FOR ISOLATED SEVERE CELLS THE NEXT FEW DAYS. THE
BEST CHANCES FOR THIS WILL BE FROM FLAGSTAFF WESTWARD TODAY WHERE
COLDER TEMPERATURES ALOFT EXIST. THIS RISK WILL SPREAD EASTWARD
TUESDAY AND WEDNESDAY...AS THE LOW BEGINS TO EJECT. FLOODING RISKS
WILL BE MITIGATED BY RELATIVELY FAST STORM MOVEMENT...ALTHOUGH
ISOLATED STRONGER CELLS...OR TRAINING CELLS...COULD STILL CAUSE SOME
PROBLEMS. BY THURSDAY...WESTERLY FLOW AND WARMING ALOFT WILL
GENERALLY BRING AN END TO OUR PRECIPITATION...AND TO THE MONSOON
SEASON. CURRENT FORECASTS HAVE THESE TRENDS WELL COVERED...NO
UPDATES NEEDED THIS MORNING.

&&

.AVIATION...FOR THE 18Z PACKAGE...SCT SHRA AND ISOLD TSRA WILL
INCREASE IN COVERAGE AFT 18Z-20Z. MVFR CONDITIONS PSBL IN THE
STRONGER STORMS. COVERAGE OF STORMS WILL DECREASE ONCE AGAIN AFTER
03Z-05Z. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS.

&&

.FGZ WATCHES/WARNINGS/ADVISORIES...NONE.

&&

PUBLIC..................PETERSON
AVIATION................MAS

FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT
WEATHER.GOV/FLAGSTAFF.

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
603 AM MST MON SEP 12 2011

AZZ004>018-037>040-130700-
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-
603 AM MST MON SEP 12 2011

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

.DAY ONE...TODAY AND TONIGHT
SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED OVER NORTHERN
ARIZONA THROUGH THIS EVENING. A FEW STORMS MAY BECOME
SEVERE...PRODUCING ONE INCH DIAMETER HAIL AND OR WIND GUSTS OVER
58 MPH. FLASH FLOODING WILL BE POSSIBLE WITH THE STRONGER STORMS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ABOVE NORMAL THUNDERSTORM COVERAGE WILL PERSIST FROM MONDAY
THROUGH WEDNESDAY. THE TUESDAY AFTERNOON AND EVENING TIME FRAME COULD
BE A PERIOD OF STRONGER STORMS ACROSS THE NORTHLAND.

SPOTTER INFORMATION STATEMENT...

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