Severe Thunderstorm Warning 6, NWS Las Vegas, NV

010 
WWUS55 KVEF 300226
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
726 PM MST MON JUN 29 2015

AZC015-300245-
/O.CON.KVEF.SV.W.0006.000000T0000Z-150630T0245Z/
MOHAVE AZ-
726 PM MST MON JUN 29 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM MST
FOR SOUTH CENTRAL MOHAVE COUNTY...

AT 725 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR WIKIEUP...MOVING SOUTHWEST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
WIKIEUP AND HIGHWAY 93.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3489 11348 3473 11339 3452 11362 3487 11379
TIME...MOT...LOC 0225Z 064DEG 11KT 3475 11360 

$$

BP

132 
WWUS55 KVEF 300243
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
743 PM MST MON JUN 29 2015

AZC015-300252-
/O.EXP.KVEF.SV.W.0006.000000T0000Z-150630T0245Z/
MOHAVE AZ-
743 PM MST MON JUN 29 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MOHAVE COUNTY
WILL EXPIRE AT 745 PM MST...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3489 11348 3473 11339 3452 11362 3487 11379
TIME...MOT...LOC 0238Z 064DEG 11KT 3475 11360 

$$

BP

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
649 PM PDT MON JUN 29 2015

.SYNOPSIS...HIGH PRESSURE WILL CONTINUE TO WOBBLE OVER UTAH AND
NEVADA THROUGH THE WEEK INTO THE WEEKEND KEEPING TEMPERATURES ABOVE
NORMAL. THERE WILL BE ENOUGH MOISTURE AND INSTABILITY IN PLACE FOR A
CHANCE OF THUNDERSTORMS EACH AFTERNOON AND EVENING...MAINLY OVER THE
MOUNTAINS AND MOHAVE COUNTY.
&&

.UPDATE...MADE SOME TWEAKS TO THE POP/SKY/WX GRIDS THROUGH THIS
EVENING TO ACCOUNT FOR THE LATEST RADAR TRENDS. AS OF 640 PM THERE
WERE THREE PRIMARY AREAS OF ACTIVITY. SOUTHERN MOHAVE COUNTY SOUTH
OF INTERSTATE 40 WAS SEEING INCREASING ACTIVITY WITH STORMS FIRING
OVER THE HIGHER TERRAIN. THIS IS EXPECTED TO CONTINUE TO SHIFT
EAST...BUT SHOULD BEGIN TO WEAKEN SOME AFTER SUNSET. THE NEXT AREA
WAS OVER NORTHERN MOHAVE COUNTY MOVING TOWARDS I-15 BETWEEN MOAPA
AND MESQUITE...THIS ACTIVITY WAS WEAKENING AND SHOULD CONTINUE TO
DO SO. THE THIRD AREA WAS ACROSS SOUTHERN CLARK COUNTY WHERE STORMS
BRIEFLY FIRED OVER THE MCCULLOUGH RANGE AND MOVED INTO THE SOUTHEAST
LAS VEGAS. VALLEY. THESE STORMS HAVE BEEN SHORT LIVED BUT HAVE
PRODUCED BRIEF HEAVY RAIN AND WIND GUSTS TO AT LEAST 35 MPH. THESE
SHOULD ALSO WEAKEN AFTER SUNSET...BUT MAY BRING A BRIEF SHOT OF
PRECIPITATION (MAINLY LARGE SPRINKLES) TO THE SOUTHERN HALF OF THE
LAS VEGAS VALLEY.
&&

.AVIATION...FOR MCCARRAN...EAST TO SOUTHEAST WINDS ASSOCIATED WITH
WEAK SHOWER/THUNDERSTORM ACTIVITY MAY IMPACT THE TERMINAL THROUGH
ABOUT 03Z THIS EVENING. AFTER THAT ACTIVITY CALMS DOWN WINDS SHOULD
RETURN TO THEIR TYPICAL SOUTH/SOUTHWEST DIRECTION AROUND 10 KTS
BARRING ANY OTHER OUTFLOW BOUNDARIES. LIGHT WINDS FAVORING AN
EASTERLY DIRECTION ARE EXPECTED MUCH OF TUESDAY UNTIL LATE AFTERNOON
WHEN SOUTHWEST WINDS SHOULD DEVELOP. THUNDERSTORMS ARE EXPECTED TO
REMAIN CONFINED TO THE MOUNTAINS AND NORTHWEST ARIZONA THROUGH
TUESDAY.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...THROUGH TUESDAY...AWAY FROM SHRA/TSRA WINDS WILL MAINLY
FAVOR TYPICAL DIURNAL DIRECTIONS AT 10 KTS OR LESS EXCEPT IN THE
AFTERNOON AND EARLY EVENING WHEN THEY PICK UP FROM THE SOUTH TO
SOUTHWEST AT 10-15 KTS WITH GUSTS OF 20-25 KTS. SHRA/TSRA ARE
POSSIBLE THROUGH EARLY THIS EVENING AND AGAIN TUESDAY
AFTERNOON/EVENING ACROSS MOHAVE COUNTY AS WELL AS IN THE HIGHER
ELEVATIONS OF CLARK, LINCOLN, INYO AND EASTERN SAN BERNARDINO.
SHRA/TSRA OVER MOHAVE COUNTY MAY SURVIVE FAR ENOUGH TO THE WEST TO
GENERATE SOME STRONGER OUTFLOW WINDS AND PATCHY BLDU TOWARD KIFP,
KEED AND KHII THIS EVENING. MAINLY SCT-BKN CLOUDS AOA 15K FEET WITH
BASES AS LOW AS 6K-10K FEET IN AND NEAR ANY SHRA/TSRA.
&&

.PREV DISCUSSION...
250 PM PDT MON JUN 29 2015

.SHORT TERM...TONIGHT THROUGH THURSDAY NIGHT.

STRONG HIGH PRESSURE WILL REMAIN CENTERED ROUGHLY OVER UTAH AND
NORTHERN NEVADA THROUGH THE SHORT TERM. THIS WILL KEEP TEMPERATURES
SEVERAL DEGREES ABOVE NORMAL. A SOUTHEAST FLOW ACROSS MOST OF OUR
FORECAST AREA HAS RESULTED IN PRECIPITABLE WATER VALUES INCREASING
TO ABOUT AN INCH AND A HALF IN THE FAR SOUTH WITH THE ONE INCH LINE
ACROSS THE FAR NORTHERN PART OF THE FORECAST AREA. THIS MOISTURE
WILL COMBINE WITH WEAK INSTABILITY TO KEEP A CHANCE OF THUNDERSTORMS
EACH AFTERNOON AND EVENING...MAINLY OVER THE MOUNTAINS AND MOHAVE
COUNTY. HOWEVER...WITH A DECENT AMOUNT OF MOISTURE IN
PLACE...OUTFLOW BOUNDARIES COULD GENERATE ISOLATED THUNDERSTORMS
EVEN IN SOME DESERT LOCATIONS. THE GFS IS INDICATING A WEAK WAVE
MOVING NORTHWEST INTO THE AREA THURSDAY WHICH COULD RESULT IN AN
UPTICK IN THUNDERSTORM ACTIVITY...ESPECIALLY OVER THE SIERRA AND
MAYBE OTHER PARTS OF INYO COUNTY. THIS FEATURE IS NOT SO EVIDENT IN
OTHER MODELS BUT IS WORTH WATCHING FOR IN LATER MODEL RUNS.

.LONG TERM...FRIDAY THROUGH MONDAY.

THE MEDIUM RANGE MODELS ARE STILL IN GOOD AGREEMENT AT DEPICTING A
STRONG RIDGE HOLDING THROUGH INDEPENDENCE DAY. THE CENTER OF THE
RIDGE IS FORECAST TO BE OVER NORTHWEST NEVADA THURSDAY THEN IT
SHOULD SLOWLY SLIDE TO THE SOUTHEAST FRIDAY AND SATURDAY WHICH WILL
TAKE IT OVER SOUTH CENTRAL NEVADA AND SOUTHWEST UTAH. THIS PATTERN
WILL STILL ALLOW A MODERATELY MOIST EAST-SOUTHEAST FLOW OVER MUCH OF
THE FORECAST AREA THURSDAY THEN THE MOISTURE WILL BE SHUNTED
SOUTHWARD FRIDAY AND SATURDAY WHILE WARMER AIR ALOFT UNDER THE HIGH
CENTER LIMITS INSTABILITY. ALSO...DRIER AIR COMING DOWN FROM IDAHO
AND UTAH IN THE NORTH-NORTHEAST FLOW WILL REDUCE THE POTENTIAL FOR
CONVECTION. SO...IT IS LOOKING VERY HOT AND MOSTLY DRY FOR THE
FOURTH OF JULY. TEMPERATURES OF 110-113 LOOK LIKELY OVER MUCH OF THE
MOJAVE DESERT REGION.

THE PATTERN WILL BEGIN TO CHANGE SUNDAY AND MONDAY AS MEDIUM RANGE
MODELS INDICATE THE HIGH WILL MIGRATE TOWARD THE FOUR CORNERS REGION
IN RESPONSE TO A BROAD EASTERN PACIFIC TROUGH. A BAND OF MOISTURE
BETWEEN THE RIDGE AND THE TROUGH WILL MOVE OVERHEAD SUNDAY AND
MONDAY LEADING TO A LITTLE MORE CLOUD COVER...SLIGHTLY LOWER
TEMPERATURES AND A SLIGHTLY INCREASED CHANCE OF THUNDERSTORMS OVER
THE HIGHER TERRAIN OF SOUTHERN NEVADA AND NORTHWEST ARIZONA.
&&

.FIRE WEATHER...THERE IS SOME THREAT OF ISOLATED DRY LIGHTNING WITH
STORMS. HOWEVER...MOISTURE LEVELS HAVE INCREASED AND THERE IS NOW A
HIGHER PROBABILITY OF STORMS PRODUCING WETTING RAINS...ESPECIALLY
ACROSS MOHAVE...CLARK...INYO AND SAN BERNARDINO COUNTIES. &&

.CLIMATE...SEE THE GRAPHIC POSTED TO OUR WEBPAGE AND SOCIAL MEDIA
SITES. LAS VEGAS WILL BE AT RISK TO SEE THE WARMEST JUNE ON RECORD.
THE RECORD NUMBER OF DAYS WITH A HIGH OF 105 OR GREATER IN JUNE OF
18 WILL LIKELY BE TIED TOMORROW. WE ALSO WILL KEEP THE CONSECUTIVE
DAYS OF 105 OR GREATER FOR ANY MONTH GOING WHICH MAY BREAK THE ALL-
TIME RECORD STRETCH OF 21 DAYS SET 4 TIMES WITH THE LAST TIME BEING
IN 2000. LASTLY 2 DAYS SO FAR THIS MONTH HAD A LOW OF 90 OR
GREATER WHICH IS A HITHERTO UNKNOWN FOR JUNE.
&&

.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.
&&

UPDATE/AVIATION...WOLCOTT
SHORT TERM/FIRE WEATHER...HARRISON
CLIMATE...STACHELSKI
LONG TERM...ADAIR

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER