Severe Thunderstorm Warning 4, NWS Flagstaff, AZ

000 
WWUS55 KFGZ 281930
SVSFGZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1228 PM MST SAT MAY 28 2005

AZC017-281945-
/O.CON.KFGZ.SV.W.0004.000000T0000Z-050528T1945Z/
NAVAJO AZ-
1228 PM MST SAT MAY 28 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 1245 PM MST FOR
SOUTH CENTRAL NAVAJO COUNTY...

AT 1220 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED OVER SOUTH CENTRAL NAVAJO COUNTY...OR ABOUT 23 MILES
NORTHWEST OF SHOW LOW...MOVING EAST AT 10 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  STATE ROUTE 277 NEAR MILE POST 320 WEST OF SNOWFLAKE AT 1235 PM MST

SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

LAT...LON 3464 11050 3447 11056 3436 11021 3458 11014

$$

000 
WWUS55 KFGZ 281949
SVSFGZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1246 PM MST SAT MAY 28 2005

AZC017-281956-
/O.EXP.KFGZ.SV.W.0004.000000T0000Z-050528T1945Z/
NAVAJO AZ-
1246 PM MST SAT MAY 28 2005

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL NAVAJO COUNTY
EXPIRES AT 1245 PM MST...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SMALL HAIL AND GUSTY
WINDS WERE STILL POSSIBLE FROM THIS THUNDERSTORM NORTHEAST OF HEBER  
AND FROM SEVERAL OTHER STORMS ACROSS SOUTHERN NAVAJO COUNTY.

LAT...LON 3464 11050 3447 11056 3436 11021 3458 11014

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF
930 AM MST SAT MAY 28 2005

.SYNOPSIS...MOISTURE WILL INCREASE OVER THE STATE TODAY AND SUNDAY
WITH SCATTERED SHOWERS AND THUNDERSTORMS EXPECTED OVER MUCH OF THE
AREA. SOME STORMS MAY PRODUCE HEAVY RAIN BY THIS AFTERNOON...MAINLY
ALONG AND SOUTH OF THE MOGOLLON RIM. CONDITIONS WILL BEGIN TO DRY BY
MONDAY AND TUESDAY...WITH GUSTY SOUTHWEST WINDS AT TIMES. EXPECT
NEAR NORMAL TEMPERATURES FOR THE NEXT SEVERAL DAYS.

&&

.DISCUSSION...RATHER BENIGN START TO TODAYS WEATHER WITH MUCH OF
NORTHERN ARIZONA UNDER PARTLY CLOUDY CIRRUS CLOUD COVERAGE.
HOWEVER...MOISTURE LEVELS HAVE STEADILY RISEN INTO THIS
MORNING...INCLUDING SURFACE DEWPOINTS WHICH NOW RANGE FROM THE LOWER
40S TO AROUND 50 DEGREES FOR MUCH OF THE FORECAST AREA. MORNING
UPPER AIR PLOT FOR FGZ ALSO SHOWS INSTABILITY IN STORE WITH AN LI
-7 AND CAPE > 2000 J/KG. EVEN WITH SOME BOUNDARY LAYER MIXING AS
THE DAY WEARS ON...EXPECT SOME SIGNIFICANT INSTABILITY TO REMAIN.
ONE LIMITING FACTOR TO TODAYS POTENTIAL DEVELOPMENT OF STRONG
STORMS LOOKS TO BE A RATHER MARGINAL VERTICAL WIND SHEAR PROFILE.
STORM DEVELOPMENT SHOULD BE FOCUSED IN AN AREA INCLUDING THE
MOGOLLON RIM/WHITE MOUNTAINS AND AREAS SOUTH. CURRENT SYNOPTIC SETUP
FEATURE A LOW PRESSURE IMPULSE ACROSS PORTIONS OF ARIZONA WHICH
SHOULD EXPLAIN SOME THE INCREASED DYNAMICS.

EXPECTING ANOTHER ACTIVE DAY SUNDAY...WITH THE MAJORITY OF THE
ACTIVITY PUSHING EAST BY MONDAY. AN APPROACHING PACIFIC LOW PRESSURE
SYSTEM BRUSHING THE EXTREME NORTHERN PORTIONS OF ARIZONA WILL
GRADUALLY DRY THINGS OUT INTO TUESDAY...WITH WINDY CONDITIONS AT
TIMES. WILL RE-EVALUATE EXTENDED FORECAST BEYOND THIS POINT WITH
AFTERNOON PACKAGE...BUT NO SIGNIFICANT UPDATES APPEAR NECESSARY AT
THIS TIME.
&&

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

&&

KD

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
710 AM MST SAT MAY 28 2005

AZZ004>018-037>040-290700-
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-
710 AM MST SAT MAY 28 2005

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

.DAY ONE...TODAY

CONSIDERABLE THUNDERSTORM ACTIVITY OVER THE SOUTHERN ARIZONA DESERTS
THE LAST FEW DAYS HAS BROUGHT A MOIST AIRMASS NORTHWARD INTO MUCH OF
NORTHERN AND CENTRAL ARIZONA TODAY. THIS WILL LEAD TO SCATTERED
SHOWERS AND THUNDERSTORMS BY LATE THIS MORNING...LASTING THROUGH
MOST OF THE AFTERNOON AND EARLY EVENING.

SOME OF THESE STORMS MAY BECOME QUITE STRONG THIS AFTERNOON WITH
HEAVY RAIN POSSIBLE...AS WELL AS STRONG WIND GUSTS...AND HAIL. THE
BEST CHANCE FOR STRONG THUNDERSTORMS WILL BE ALONG AND SOUTH OF THE
MOGOLLON RIM. THERE WILL BE A CHANCE FOR ISOLATED SEVERE
THUNDERSTORMS TODAY IN THE SAME AREA.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP AGAIN ON SUNDAY
WITH ISOLATED STRONGER STORMS ALONG THE MOGOLLON RIM EASTWARD TOWARD
THE WHITE MOUNTAINS. DRIER AIR WILL MOVE INTO THE AREA MONDAY AND
TUESDAY.

.SPOTTER INFORMATION STATEMENT...

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