Flash Flood Warning 90, NWS Las Vegas, NV

699 
WGUS75 KVEF 240105
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
505 PM PST THU DEC 23 2010

CAC071-240315-
/O.CON.KVEF.FF.W.0090.000000T0000Z-101224T0315Z/
/00000.U.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
505 PM PST THU DEC 23 2010

...A FLASH FLOOD WARNING FOR A LEVEE FAILURE REMAINS IN EFFECT UNTIL
715 PM PST FOR WEST CENTRAL SAN BERNARDINO COUNTY...

AT 450 PM PST...A LEVEE FAILURE IS CAUSING FLOODING NEAR BARSTOW 
ALONG THE MOJAVE RIVER INCLUDING MARKS ROAD AND SOAP MINE ROAD. 
EMERGENCY MANAGEMENT OFFICIALS REPORTED THAT THE FLOODING WAS 
CONFINED TO SEVERAL PRIVATE RANCH PROPERTIES NEAR THE LEVEE BETWEEN 
INTERSTATES 15 AND 40 AN NO SIGNIFICANT IMPACT EXISTS TO MAJOR ROADS 
OR THE REST OF THE GENERAL PUBLIC.

&&

LAT...LON 3490 11689 3486 11689 3489 11700 3490 11698
      3490 11696

$$

JA

502 
WGUS75 KVEF 240314
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
714 PM PST THU DEC 23 2010

CAC071-240319-
/O.EXP.KVEF.FF.W.0090.000000T0000Z-101224T0315Z/
/00000.U.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
714 PM PST THU DEC 23 2010

...THE FLASH FLOOD WARNING FOR A LEVEE FAILURE WILL EXPIRE AT 715 PM
PST FOR WEST CENTRAL SAN BERNARDINO COUNTY...

LAW ENFORCEMENT OFFICIALS REPORTED THAT THE BREACH IN THE FLOOD 
CONTROL CHANNEL ALONG THE MOJAVE RIVER NEAR MARKS ROAD AND SOAP
MINE ROAD WAS BEING MONITORED AND THAT NO SIGNIFICANT IMPACTS WERE 
OCCURRING. THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE ON 
SCHEDULE.

LAT...LON 3490 11689 3486 11689 3489 11700 3490 11698
      3490 11696

$$

JA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1059 AM PST THU DEC 23 2010

.SYNOPSIS...A FEW SHOWERS WILL BE SEEN OVER NORTHWEST ARIZONA TODAY
AS THE STRONG LOW WHICH CROSSED OVER THE AREA ON WEDNESDAY CONTINUES
TO SHIFT EAST. DRY CONDITIONS THEN EXPECTED AREAWIDE INTO CHRISTMAS
DAY AS A WEAK RIDGE OF HIGH PRESSURE MOVES OVER THE REGION. HOWEVER
ANOTHER...WEAKER STORM...WILL PUSH INTO THE SOUTHERN SIERRA SATURDAY
NIGHT AND ACROSS THE REGION ON SUNDAY ONCE AGAIN PRODUCING A CHANCE
OF RAIN AND SNOW.
&&

.UPDATE....FOG/LOW STRATUS WILL PERSIST INTO THE EARLY AFTERNOON
BEFORE WE SEE AREAS BEGIN TO SCATTER OUT. STREAMS IN LINCOLN COUNTY
RECEDING AND THE FLOOD WARNING HAS BE DISCONTINUED. AREA WILL ENJOY
DRY CONDITIONS FRIDAY AND SATURDAY BEFORE THE NEXT WAVE OF
PRECIPITATION PASSES THROUGH SATURDAY NIGHT AND SUNDAY. SYSTEM IS A
FASTER MOVER AND EXPECT LIGHT PRECIPITATION TOTALS WHICH WILL NOT
CAUSE ANY ADDITIONAL ISSUES ON AREA WATER WAYS.
&&

.AVIATION UPDATE...
1025 AM PST THU DEC 23 2010

FOR MCCARRAN...FEW-SCT LOW CLOUDS AROUND 2500 FT AND A SCT MID DECK
AOA 5K FT THROUGH EARLY AFTERNOON THEN CLEARING. LIGHT AND
VARIABLE WINDS THROUGH THE DAY.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...AREAS OF LOW CLOUDS THIS MORNING WILL DECREASE IN
COVERAGE AS LOW PRESSURE MOVES AWAY FROM THE AREA AND HIGH PRESSURE
BUILDS INTO THE WEST. WINDS WILL BE GENERALLY LIGHT UNDER 10 KTS AND
FOLLOW TYPICAL DIURNAL DIRECTIONAL TRENDS.
&&

.PREV DISCUSSION...
325 AM PST THU DEC 23 2010

.SHORT TERM...TODAY THROUGH SATURDAY NIGHT...UPPER LOW OVER SOUTHERN
NEVADA/NORTHWEST ARIZONA TO CONTINUE SHIFTING EAST DURING THE DAY
WITH DRYING FROM THE WEST. ALTHOUGH THE MAIN ACTIVITY FROM THIS
SYSTEM HAS SHIFTED EAST OF THE CWA...LAST BAND OF MOISTURE ROTATING
AROUND THE BACK SIDE OF THE LOW AND ACROSS EXTREME SOUTHERN NEVADA
EARLY THIS MORNING AND THEN ACROSS MOHAVE COUNTY BY LATE MORNING OR
EARLY AFTERNOON. DRYING TO THEN TAKE PLACE ACROSS THE CWA AS A WEAK
RIDGE OF HIGH PRESSURE MOVES ACROSS THE REGION FRIDAY AND CHRISTMAS
DAY. LOW LEVEL MOISTURE ACROSS MUCH OF THE AREA THIS MORNING FOR
PATCHY FOG WHICH WILL STILL BE A PROBLEM INTO FRIDAY MORNING. HAVE
LEFT PATCHY FOG IN THE GRIDS FOR THIS MORNING...BUT WILL NOT INCLUDE
FOR FRIDAY AND SEE HOW MUCH DRYING TAKES PLACE TODAY AND THEN
ADDRESS IN THE AFTERNOON PACKAGE. NEXT PACIFIC STORM BEGINS
TO PUSH ONTO THE CENTRAL CALIFORNIA COAST LATE CHRISTMAS AFTERNOON
AND ALTHOUGH THERE ARE TIMING DIFFERENCES BETWEEN THE GFS AND THE
NAM/ECMWF WITH THE GFS BEING THE FASTER OF THE MODELS...OVERALL
TREND WILL BE TO INCREASE POPS ACROSS THE SOUTHERN SIERRA LATE
SATURDAY WITH MOST OF THE NORTHWEST PORTION OF THE CWA UNDER CHANCE
POPS BY 12Z SUNDAY. DAYTIME TEMPERATURES LOOK TO BE NEAR NORMAL
THROUGH THE SHORT TERM.

ALTHOUGH THE STORM HAS MOVED OUT OF THE AREA...FLOOD WARNINGS ARE
STILL IN EFFECT THROUGH THIS EVENING FOR SOUTHEAST LINCOLN...
NORTHWEST MOHAVE...AND NORTHEAST CLARK COUNTIES. PLEASE SEE THE
LATEST STATEMENTS ON THESE FLOOD CONDITIONS.

.LONG TERM...SUNDAY THROUGH NEXT WEEK...TWO LOW PRESSURE SYSTEMS
LOOK TO IMPACT THE REGION OVER THE EXTENDED PERIOD. ON SUNDAY...A
SHARP NEGATIVELY TILTED TROUGH PASSES OVER THE MOJAVE DESERT AND
SOUTHERN GREAT BASIN WHICH WILL RESULT IN ANOTHER QUICK ROUND OF
VALLEY RAIN AND HIGH ELEVATION SNOW ACROSS THE MAJORITY OF THE
FORECAST AREA. THERE IS GOOD OVERALL AGREEMENT BETWEEN MODEL
SOLUTIONS...AND THERE WAS MINIMAL CHANGE NEEDED OVERNIGHT TO
INHERITED GRIDS. DRY CONDITIONS UNDER WEST TO NORTHWEST FLOW CAN BE
EXPECTED TUESDAY AHEAD OF THE NEXT SYSTEM TO IMPACT THE REGION
WEDNESDAY/THURSDAY.
&&

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

UPDATE...PIERCE
AVIATION...SALMEN
JENSEN/KENNEDY

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
604 AM PST THU DEC 23 2010

AZZ001-NVZ015-016-240000-
NORTHWEST PLATEAU-LINCOLN COUNTY-NORTHEAST CLARK COUNTY-
604 AM PST THU DEC 23 2010 /704 AM MST THU DEC 23 2010/

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

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. HOWEVER...FLOOD
WARNINGS REMAIN IN EFFECT THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. HOWEVER A PACIFIC
STORM IS EXPECTED TO MOVE INTO THE AREA LATE CHRISTMAS DAY AND
SUNDAY. THIS WILL RESULT IN A CHANCE OF VALLEY RAIN AND MOUNTAIN
SNOW. DRY CONDITIONS ARE EXPECTED FOR MONDAY AND TUESDAY BEFORE
ANOTHER STORM MOVES IN ON WEDNESDAY.

.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.

AZZ002-003-036-CAZ519>527-NVZ014-017>022-240000-
LOWER COLORADO RIVER VALLEY-NORTHWEST DESERTS-
LAKE MEAD NATIONAL RECREATION AREA-EASTERN SIERRA SLOPES-
OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY-
DEATH VALLEY NATIONAL PARK-WESTERN MOJAVE DESERT-
EASTERN MOJAVE DESERT-MORONGO BASIN-CADIZ BASIN-
SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-
ESMERALDA AND CENTRAL NYE COUNTY-
WESTERN CLARK AND SOUTHERN NYE COUNTY-SHEEP RANGE-
SPRING MOUNTAINS-LAS VEGAS VALLEY-SOUTHERN CLARK COUNTY-
604 AM PST THU DEC 23 2010 /704 AM MST THU DEC 23 2010/

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...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. HOWEVER A PACIFIC
STORM IS EXPECTED TO MOVE INTO THE AREA LATE CHRISTMAS DAY AND
SUNDAY. THIS WILL RESULT IN A CHANCE OF VALLEY RAIN AND MOUNTAIN
SNOW. DRY CONDITIONS ARE EXPECTED FOR MONDAY AND TUESDAY BEFORE
ANOTHER STORM MOVES IN ON WEDNESDAY.

.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.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
839 AM PST THU DEC 23 2010

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

1000 AM     FLOOD            3 SSW CALIENTE          37.58N 114.54W
12/21/2010                   LINCOLN            NV   LAW ENFORCEMENT

            LINCOLN COUNTY SHERIFFS OFFICE REPORTED STATE ROUTE 317
            SOUTH OF CALIENTE THROUGH RAINBOW CANYON CLOSED DUE TO
            WATER OVER THE ROAD.

0239 PM     FLOOD            2 SSE LOGANDALE         36.59N 114.47W
12/22/2010                   CLARK              NV   TRAINED SPOTTER

            SPOTTER REPORTED AT THE INTERSECTION OF GABLER AND HEYER
            STREETS THAT WATER WAS OVER THE ROAD...THE MEASUREMENT
            WAS ABOUT 12 INCHES DEEP.

0300 PM     FLOOD            11 W BEAVER DAM         37.51N 114.25W
12/22/2010                   LINCOLN            NV   COUNTY OFFICIAL

            LINCOLN COUNTY OFFICIAL REPORTED TWO TO THREE FEET OF
            WATER OVER ROAD FROM CLOVER CREEK ADJACENT TO RAILROAD
            TRACKS.

&&

BPIERCE