Flash Flood Warning 29, NWS Las Vegas, NV

000
WGUS75 KVEF 310329
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
828 PM PDT SAT JUL 30 2005

CAC071-310400-
SAN BERNARDINO CA-
828 PM PDT SAT JUL 30 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 900 PM PDT FOR SOUTHEASTERN 
SAN BERNARDINO COUNTY...

AT 820 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING HEAVY RAIN NEAR VIDAL JUNCTION. 
THIS STORM HAD SHIFTED TO THE EAST SINCE 730 PM AND WAS BEGINNING TO 
WEAKEN OVER HIGHWAY 95 AND STATE ROUTE 62. THE RAINFALL RATE WAS 
DECREASING BUT RADAR INDICATED BETWEEN ONE AND TWO INCHES FELL 
EARLIER OVER THE AREA BETWEEN RICE AND VIDAL JUNCTION. RUNOFF FROM 
THESE HEAVY RAINS WILL LIKELY FILL WASHES FLOWING ACROSS STATE ROUTE 
62 AND POSSIBLY HIGHWAY 95 NORTH OF VIDAL JUNCTION UNTIL AT LEAST
9 PM.

DO NOT ATTEMPT TO CROSS WATER COVERED DIPS...OR LOW WATER CROSSINGS. 
FIND ALTERNATE ROUTES

LAT...LON 3432 11465 3417 11493 3383 11488 3408 
11447

$$

JGA

000
WGUS75 KVEF 310402
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
901 PM PDT SAT JUL 30 2005

CAC071-310407-
SAN BERNARDINO CA-
901 PM PDT SAT JUL 30 2005

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SAN BERNARDINO COUNTY 
EXPIRED AT 900 PM PDT...

DOPPLER RADAR INDICATED RAINFALL HAD BECOME LIGHT NEAR VIDAL 
JUNCTION AND HEAVY RAIN IS NO LONGER EXPECTED NEAR STATE ROUTE 62 
AND HIGHWAY 95. RAINFALL AMOUNTS BETWEEN ONE AND TWO INCHES HAVE 
LIKELY FALLEN OVER THE AREAS WEST AND NORTH OF VIDAL JUNCTION SINCE 
7 PM. ALTHOUGH FLOODING HAS NOT BEEN REPORTED...MOTORISTS TRAVELING 
ALONG STATE ROUTE 62 AND HIGHWAY 95 NEAR VIDAL JUNCTION SHOULD BE 
ALERT TO THE POSSIBILITY OF WATER IN DIPS AND LOW LYING AREAS THE 
REST OF THE EVENING. DO NOT CROSS AREAS WHERE WATER COVERS THE ROAD. 
FIND AN ALTERNATE ROUTE.

LAT...LON 3424 11473 3417 11493 3383 11488 3396 11448

$$

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