Dust Storm Warning 1, NWS Las Vegas, NV

939 
WWUS75 KVEF 291900
NPWVEF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
1200 PM PDT FRI APR 29 2011

.STRONG NORTHERLY WINDS BEHIND A COLD FRONT PASSING OVER THE
REGION WILL RESULT IN STRONG WINDS ACROSS CENTRAL NYE AND
ESMERALDA COUNTIES THROUGH THE DAY. STRONG NORTH WINDS WILL AFFECT
THE COLORADO RIVER VALLEY TOMORROW BEHIND THE COLD FRONT.

CAZ520-292000-
/O.EXP.KVEF.DS.W.0001.000000T0000Z-110429T1900Z/
OWENS VALLEY-
INCLUDING...BISHOP...INDEPENDENCE...LONE PINE...
OLANCHA
1200 PM PDT FRI APR 29 2011

...DUST STORM WARNING WILL EXPIRE AT NOON PDT TODAY...

THE DUST STORM WARNING FOR THE OWENS VALLEY WILL EXPIRE AT NOON
PDT TODAY.

WINDS ARE STARTING TO DECREASE WHILE VISIBILITY RESTRICTIONS DUE
TO BLOWING DUST IMPROVE. ALTHOUGH LOCALIZED AREAS OF BLOWING DUST
COULD STILL REDUCE VISIBILITIES TO LESS THAN ONE MILE THROUGH 200
PM PDT...REDUCTIONS TO LESS THAN 1/4 MILE ARE NO LONGER A THREAT.

$$

CAZ523-524-292000-
/O.EXP.KVEF.WI.Y.0032.000000T0000Z-110429T1900Z/
WESTERN MOJAVE DESERT-EASTERN MOJAVE DESERT-
INCLUDING...BARSTOW...DAGGETT...FORT IRWIN...BAKER...
MOUNTAIN PASS...MITCHELL CAVERNS
1200 PM PDT FRI APR 29 2011

...WIND ADVISORY WILL EXPIRE AT NOON PDT TODAY...

THE WIND ADVISORY FOR NORTHERN SAN BERNARDINO COUNTY WILL EXPIRE
AT NOON PDT TODAY.

LATEST OBSERVATIONS ARE INDICATING SURFACE WINDS IN A DECREASING
TREND...AND ADVISORY LEVEL WINDS ARE NO LONGER EXPECTED TODAY.

$$

NVZ014-300300-
/O.CON.KVEF.WI.Y.0033.000000T0000Z-110430T0600Z/
ESMERALDA AND CENTRAL NYE COUNTY-
INCLUDING...BEATTY...GOLDFIELD...SILVER PEAK...DYER
1200 PM PDT FRI APR 29 2011

...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

A WIND ADVISORY REMAINS IN EFFECT FOR ESMERALDA AND CENTRAL NYE
COUNTIES UNTIL 11 PM PDT THIS EVENING.

* WINDS: NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 50 MPH.

* TIMING: WINDS WILL INCREASE THIS MORNING...PEAK DURING THE 
  AFTERNOON...AND GRADUALLY DECREASE THIS EVENING.

* LOCATIONS: BEATTY...GOLDFIELD...SILVER PEAK...DYER

* IMPACTS: WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... 
  ESPECIALLY FOR MOTORCYCLES AND HIGH PROFILE VEHICLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DRIVERS OF MOTORCYLES...VANS...CAMPERS...TRAILERS...AND ANY HIGH-
PROFILE VEHICLE SHOULD BE ALERT TO THE POTENTIAL DANGER OF THESE
WINDS...ESPECIALLY WHEN DRIVING ALONG HIGHWAY 95.

&&

$$

AZZ002-036-CAZ527-NVZ021-300300-
/O.CON.KVEF.WI.Y.0034.110430T1700Z-110501T0400Z/
LAKE HAVASU AND FORT MOHAVE-LAKE MEAD NATIONAL RECREATION AREA-
SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-
INCLUDING...LAKE HAVASU...DESERT HILLS...TOPOCK...
BULLHEAD CITY...MOHAVE VALLEY...NEEDLES...HOOVER DAM...LAUGHLIN
1200 PM PDT FRI APR 29 2011 /1200 PM MST FRI APR 29 2011/

...WIND ADVISORY REMAINS IN EFFECT FROM 10 AM PDT /10 AM MST/ TO
9 PM PDT /9 PM MST/ SATURDAY...

A WIND ADVISORY REMAINS IN EFFECT FOR THE LAKES AND THE COLORADO
RIVER VALLEY FROM 10 AM TO 9 PM SATURDAY.

* WINDS: NORTH WINDS 20 TO 30 MPH WITH GUSTS UP TO 50 MPH.

* TIMING: WINDS WILL INCREASE SATURDAY MORNING...PEAK IN THE 
  AFTERNOON...AND DECREASE IN THE EVENING.

* LOCATIONS: HOOVER DAM...LAUGHLIN...NEEDLES...BULLHEAD CITY... 
  MOHAVE VALLEY...LAKE HAVASU...DESERT HILLS...TOPOCK

* IMPACTS: DANGEROUS BOATING CONDITIONS ARE EXPECTED ON THE 
  LAKES. DRIVERS ON EAST WEST ROADS SUCH AS HIGHWAY 68 AND 
  INTERSTATE 40 WILL SEE STRONG CROSSWINDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BOATERS IN THE WIND ADVISORY AREA SHOULD USE EXTREME CAUTION WHEN
VENTURING ONTO AREA LAKES. THESE WINDS WILL MAKE OPEN WATERS OF
LAKES ROUGH AND HAZARDOUS...AND MAY RESULT IN HIGH WAVES WHICH MAY
TIP OR SWAMP SMALLER CRAFT. FOR YOUR PERSONAL SAFETY...AVOID THE
OPEN WATERS. STAY CLOSE TO SHORE OR AROUND PROTECTED AREAS.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
650 AM PDT FRI APR 29 2011

.SYNOPSIS...AN AREA OF LOW PRESSURE MOVING THROUGH THE WESTERN
STATES WILL BRING AN EXTENDED PERIOD OF WINDS TO THE MOJAVE DESERT
AND SOUTHERN GREAT BASIN THROUGH SATURDAY. TEMPERATURES WILL BE WELL
BELOW NORMAL ON SATURDAY...THEN HIGH PRESSURE WILL LEAD TO WARMER
TEMPERATURES EARLY NEXT WEEK.
&&

.UPDATE...WINDS IN INYO COUNTY HAVE TURNED TO THE NORTH BEHIND THE
COLD FRONT AND ARE NO LONGER HITTING ADVISORY/WARNING CRITERIA...SO
LET THE NPW EXPIRE THERE. WINDS IN SAN BERNARDINO COUNTY REFUSE TO
SUBSIDE...SO EXTENDED THE ADVISORY THERE UNTIL 10 AM. NO OTHER
CHANGES AT THIS TIME.
&&

.PREV DISCUSSION...
237 AM PDT FRI APR 29 2011

.SHORT TERM...IN A CONTINUANCE OF A RECURRING THEME...WIND IS THE
PROBLEM OF THE DAY. SATELLITE SHOWS MOSTLY CLEAR SKIES OVER OUR CWFA
EARLY THIS MORNING...BUT THE LOW PRESSURE SYSTEM CLEARLY DEPICTED
OVER OREGON IS THE MAIN FEATURE OF CONCERN. WESTERLY MID LEVEL FLOW
ON THE SOUTH SIDE OF THIS LOW HAD ALREADY CONTRIBUTED TO HIGH
DOWNSLOPE WINDS OVER WESTERN INYO COUNTY...AND WILL LEAVE THE
WARNING AND ADVISORY IN PLACE THERE. IN NORTHERN SAN BERNARDINO
COUNTY...WINDS WERE STILL CRANKING OVER 40 MPH AT SEVERAL
STATIONS...SO LEFT THE ADVISORY THERE AS WELL. NAM12 AND NMM BOTH
SUGGEST THE WINDS WILL QUICKLY LET UP IN BOTH COUNTIES THIS MORNING
AS THE COLD FRONT DRIVES THROUGH. WILL MAKE A LAST MINUTE CALL BASED
ON 6 AM OBS WHETHER TO EXTEND BEYOND THE CURRENT 7 AM EXPIRATIONS.
BEHIND SAID COLD FRONT...WINDS OVER ESMERALDA COUNTY AND THE NEVADA
NATIONAL SECURITY SITE WILL INCREASE THIS MORNING...AND MOVED THE
START TIME OF THE ADVISORY THERE FROM 11 AM TO 7 AM TO ACCOUNT FOR
THE FASTER MOVEMENT OF THE FRONT. THE FASTER MOVEMENT OF THE FRONT
WILL ALSO SHORTEN THE WINDOW OF OPPORTUNITY FOR STRONG WINDS IN
MOHAVE COUNTY TODAY...SO CANCELLED THE FIRE WEATHER WATCH THERE.
KEPT THE FIRE WEATHER WATCH FOR THE COLORADO RIVER VALLEY SATURDAY
WHERE POST-FRONTAL WINDS WILL FUNNEL THROUGH THE TERRAIN...AND ALSO
ADDED A WIND ADVISORY. NO PRECIP IN THE FORECAST THROUGH SUNDAY.
TEMPERATURES WILL BE UNSEASONABLY CHILLY SATURDAY IN THE WAKE OF THE
FRONT...BUT SHOULD START TO REBOUND SUNDAY.

.LONG TERM...MONDAY THROUGH FRIDAY...SYSTEM EXITING THE AREA MONDAY
WITH SOME LINGERING NORTHERLY WINDS OVER THE SOUTHERN HALF OF THE
FORECAST AREA. STRONGEST WINDS EXPECTED TO BE DOWN THE COLORADO
RIVER VALLEY AT LEAST EARLY IN THE DAY AND THEN GRADUALLY DIMINISH
BY MONDAY AFTERNOON AS GRADIENTS WEAKEN. HIGH PRESSURE BUILDING OFF
THE WEST COAST WILL KEEP A DRY NORTHWESTERLY FLOW OVER THE AREA WITH
TEMPERATURES CLIMBING A FEW DEGREES MONDAY AFTERNOON...BUT STILL
REMAINING SLIGHTLY BELOW NORMAL. HIGH CENTER GRADUALLY SHIFTS INLAND
WEDNESDAY THROUGH FRIDAY WITH TEMPERATURES CLIMBING SEVERAL DEGREES
ABOVE NORMAL.

.AVIATION...FOR MCCARRAN...SOUTHWEST WINDS 15-25KTS ARE EXPECTED
THROUGH 12Z AND THEN DIMINISH TO AROUND 10-15KTS. A COLD FRONT WILL
PUSH THROUGH SOUTHERN NEVADA BETWEEN 15Z-17Z FRIDAY WITH NORTHERLY
WINDS INCREASE DURING THE MORNING. NORTH WINDS 15-25KTS WITH GUSTS
AROUND 30KTS EXPECTED THROUGH MID AFTERNOON. A STRONGER PUSH OF
NORTHERLY WINDS WILL BE AFTER 02Z SATURDAY WITH GUSTS UP TO 40KTS
POSSIBLE. VARIABLE CLOUDS AOA 25K FEET THROUGH FRIDAY MORNING THEN
CLEARING.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SOUTHWEST TO WEST WINDS 20-30KTS EXPECTED OVER MANY
AREAS THIS EVENING BEFORE AROUND SUNRISE. THE EXCEPTION WILL BE
WESTERN SAN BERNARDINO COUNTY WHERE GUSTY WEST WINDS TO 35 KTS WILL
CONTINUE OVERNIGHT. A POTENT COLD FRONT WILL BEGIN TO MOVE THROUGH
THE FORECAST AREA LATE TONIGHT AND FRIDAY BRINGING GUSTY...
POTENTIALLY STRONG NORTHERLY WINDS BEHIND IT. VARIABLE HIGH CLOUDS
ARE EXPECTED TODAY AND TONIGHT WITH A MIX OF MID LEVEL CLOUDS
THROUGH FRIDAY MORNING.
&&

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...WIND ADVISORY UNTIL 11 PM PDT THIS EVENING FOR NVZ014.
     FIRE WEATHER WATCH FROM SATURDAY MORNING THROUGH SATURDAY
     EVENING FOR NVZ466.
     WIND ADVISORY FROM 10 AM TO 9 PM PDT SATURDAY FOR NVZ021.
AZ...FIRE WEATHER WATCH FROM SATURDAY MORNING THROUGH SATURDAY
     EVENING FOR AZZ101.
     WIND ADVISORY FROM 10 AM TO 9 PM MST SATURDAY FOR AZZ002-036.
CA...FIRE WEATHER WATCH FROM SATURDAY MORNING THROUGH SATURDAY
     EVENING FOR CAZ229.
     WIND ADVISORY FROM 10 AM TO 9 PM PDT SATURDAY FOR CAZ527.
     WIND ADVISORY UNTIL 10 AM PDT THIS MORNING FOR CAZ523-524.
&&

MORGAN/GORELOW

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
645 AM PDT FRI APR 29 2011

CAZ523-524-300445-
WESTERN MOJAVE DESERT-EASTERN MOJAVE DESERT-
645 AM PDT FRI APR 29 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT

GUSTY WEST WINDS WILL CONTINUE THROUGH MID MORNING. A WIND
ADVISORY REMAINS IN EFFECT UNTIL 10 AM.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...
SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

NVZ014-300445-
ESMERALDA AND CENTRAL NYE COUNTY-
645 AM PDT FRI APR 29 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
NEVADA.

.DAY ONE...TODAY AND TONIGHT

GUSTY NORTHWEST WINDS ARE EXPECTED THROUGH TONIGHT. A WIND
ADVISORY IS IN EFFECT UNTIL 11 PM.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER REPORTS OF WIND WILL BE NEEDED THROUGH TONIGHT.

AZZ002-036-CAZ527-NVZ021-300445-
LOWER COLORADO RIVER VALLEY-LAKE MEAD NATIONAL RECREATION AREA-
SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-
645 AM PDT FRI APR 29 2011 /645 AM MST FRI APR 29 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
ARIZONA...CALIFORNIA AND SOUTHERN NEVADA.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL BRING GUSTY NORTH WINDS BEGINNING THIS EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NORTH WINDS WILL PEAK ON SATURDAY. A WIND ADVISORY AND A FIRE
WEATHER WATCH ARE IN EFFECT FROM 10 AM TO 9 PM. HAZARDOUS WEATHER
IS NOT EXPECTED SUNDAY THROUGH THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...
SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

AZZ001-003-CAZ519>522-525-526-NVZ015>020-022-300445-
NORTHWEST PLATEAU-NORTHWEST DESERTS-EASTERN SIERRA SLOPES-
OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY-
DEATH VALLEY NATIONAL PARK-MORONGO BASIN-CADIZ BASIN-
LINCOLN COUNTY-NORTHEAST CLARK COUNTY-
WESTERN CLARK AND SOUTHERN NYE COUNTY-SHEEP RANGE-
SPRING MOUNTAINS-LAS VEGAS VALLEY-SOUTHERN CLARK COUNTY-
645 AM PDT FRI APR 29 2011 /645 AM MST FRI APR 29 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
ARIZONA...CALIFORNIA AND SOUTHERN NEVADA.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...
SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MORGAN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
605 AM PDT FRI APR 29 2011

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

0850 PM     NON-TSTM WND GST 4 SW INDEPENDENCE       36.75N 118.25W
04/28/2011  M70 MPH          INYO               CA   MESONET

            SIERRA ROTORS SITE SEVEN RECORDED A 70 MPH WIND GUST AT
            850 PM PDT.

0754 PM     NON-TSTM WND GST S OWENS VALLEY RAWS     37.39N 118.55W
04/28/2011  M59 MPH          INYO               CA   MESONET

            OWENS VALLEY RAWS RECORDED A 59 MPH WIND GUST AT 754 PM
            PDT THURSDAY.

0950 PM     NON-TSTM WND GST 5 SSE INDEPENDENCE      36.73N 118.18W
04/28/2011  M60 MPH          INYO               CA   MESONET

            SIERRA ROTORS SITE 14 RECORDED A 60 MPH WIND GUST AT 950
            PM PDT THURSDAY.

0455 PM     NON-TSTM WND GST BICYCLE LAKE AIRFIELD   35.28N 116.62W
04/28/2011  M62 MPH          SAN BERNARDINO     CA   ASOS

            BICYCLE LAKE ASOS RECORDED A 62 MPH WIND GUST AT 455 PM
            PDT THURSDAY.

&&

JGG