Severe Thunderstorm Warning 42, NWS Las Vegas, NV

000 
WWUS55 KVEF 310218
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
718 PM PDT SAT JUL 30 2005

CAC071-310225-
/O.EXP.KVEF.SV.W.0042.000000T0000Z-050731T0215Z/
SAN BERNARDINO CA-
718 PM PDT SAT JUL 30 2005

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SAN BERNARDINO 
COUNTY EXPIRED AT 715 PM PDT...

AT 713 PM...DOPPLER RADAR INDICATED THE THUNDERSTORM WEST OF VIDAL 
JUNCTION HAD PRODUCED STRONG GUSTY WINDS BEFORE 7 PM BUT HAD NOW 
WEAKENED AND ADDITIONAL SEVERE WINDS ARE NO LONGER EXPECTED FROM 
THIS STORM. THE THUNDERSTORM WILL CONTINUE TO PRODUCE HEAVY RAIN AS
IT MOVES SOUTH ACROSS STATE ROUTE 62 AND INTO RIVERSIDE COUNTY.

LAT...LON 3437 11464 3423 11493 3398 11482 3414 11451

$$

JGA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
400 PM PDT SAT JUL 30 2005

.SYNOPSIS...HIGH PRESSURE WILL REMAIN NEAR THE FOUR CORNERS REGION
THROUGH THE WEEKEND. SOUTH TO SOUTHEAST FLOW AROUND THE HIGH WILL
KEEP A DECENT AMOUNT OF MONSOONAL MOISTURE OVER THE REGION INTO
EARLY NEXT WEEK. THIS WILL ALLOW THUNDERSTORMS TO DEVELOP EACH
AFTERNOON...AND KEEP TEMPERATURES NEAR TO SLIGHTLY BELOW NORMAL.
&&

.DISCUSSION...DAYTIME HEATING HAS INITIATED CONVECTION OVER THE
EASTERN 2/3 OF THE CWA THIS AFTERNOON...WHERE THE BEST MOISTURE AND
INSTABILITY EXIST. MOST ACTIVE PORTIONS OF THE FORECAST AREA ARE
CURRENTLY CENTRAL SAN BERNARDINO AND SOUTHERN MOHAVE COUNTIES.
EASTERN SAN BERNARDINO...WESTERN MOHAVE...AND SOUTHERN CLARK
COUNTIES WILL BE MORE OF A CONCERN THIS EVENING AS BOUNDARIES FROM
THUNDERSTORMS OVER THE CURRENTLY MORE ACTIVE AREAS INITIATE NEW
CONVECTION.
AIRMASS LOOKS TO REMAIN FAIRLY UNSTABLE OVERNIGHT PER LATEST
GFS/NAM. WILL HAVE TO WATCH BOUNDARY COLLISIONS THIS EVENING AND
WAIT TO SEE IF ANYTHING MORE ORGANIZED CAN DEVELOP TO SUSTAIN
CONVECTION AFTER THE SUN GOES DOWN. OTHERWISE...MOIST MONSOONAL FLOW
PATTERN TO REMAIN IN PLACE OVER THE NEXT WEEK WITH A DIURNAL
THUNDERSTORM PATTERN DOMINATING CONVECTIVE ACTIVITY. THUNDERSTORMS
MAY BECOME MORE ISOLATED TOWARDS THE END OF NEXT WEEK AS THE MID
LEVEL RIDGE MOVES CLOSE TO OR OVER NEVADA.

.AVIATION...TAF ADEQUATELY COVERS ALL EXPECTED WEATHER AT KLAS.
SCATTERED THUNDERSTORMS ARE EXPECTED TO AFFECT ALL TRAFFIC CORRIDORS
AND THE LAS VEGAS VALLEY THIS EVENING. ERRATIC AND GUSTY WINDS IN
AND NEAR THUNDERSTORMS MAY CAUSE SUDDEN AND DRAMATIC WIND SHIFTS.
BRIEF HEAVY RAIN MAY ALSO ACCOMPANY THESE STORMS.

.VEF WATCHES/WARNINGS/ADVISORIES...
.NV...NONE.
.AZ...NONE.
.CA...NONE.
&&

DAVIS

HAZARDOUS WEATHER OUTLOOK...CORRECTED FORMAT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1139 AM PDT SAT JUL 30 2005

AZZ001>003-036-CAZ026>029-NVZ014>022-311838-
DEATH VALLEY NATIONAL PARK CA-ESMERALDA AND CENTRAL NYE COUNTY NV-
LAKE HAVASU AND FORT MOHAVE AZ-LAKE MEAD NATIONAL RECREATION AREA AZ-
LAKE MEAD NATIONAL RECREATION AREA NV-LAS VEGAS VALLEY NV-
LINCOLN COUNTY NV-NORTHEAST CLARK COUNTY NV-NORTHWEST DESERTS AZ-
NORTHWEST PLATEAU AZ-
OWENS VALLEY AND ADJACENT EASTERN SIERRA SLOPES CA-
SAN BERNARDINO COUNTY DESERTS CA-SAN BERNARDINO COUNTY-
UPPER COLORADO RIVER VALLEY CA-SHEEP RANGE NV-
SOUTHERN CLARK COUNTY NV-SPRING MOUNTAINS-RED ROCK CANYON NV-
WESTERN CLARK AND SOUTHERN NYE COUNTY NV-
1139 AM PDT SAT JUL 30 2005

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

.DAY ONE...SATURDAY.

THE MONSOON PATTERN REMAINS IN PLACE TODAY. SCATTERED THUNDERSTORMS
ARE EXPECTED THIS AFTERNOON...ESPECIALLY SOUTHEAST OF A LINE FROM
BARSTOW CALIFORNIA TO CALIENTE NEVADA. SOME OF THE STORMS WILL
LIKELY PRODUCE ISOLATED SEVERE HAIL...DAMAGING WINDS...AND FLASH
FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THE MONSOON PATTERN IS EXPECTED TO REMAIN IN PLACE THROUGH THE
WEEK. SCATTERED THUNDERSTORMS CAN BE EXPECTED EACH AFTERNOON AND
EVENING...WITH ISOLATED SEVERE WEATHER AND FLASH FLOODING POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

MORGAN