Flash Flood Warning 70, NWS Las Vegas, NV

274 
WGUS75 KVEF 210015
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
415 PM PST MON DEC 20 2010

CAC071-210445-
/O.CON.KVEF.FF.W.0070.000000T0000Z-101221T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
415 PM PST MON DEC 20 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PST FOR SOUTH
CENTRAL SAN BERNARDINO COUNTY...

AT 410 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE RAIN OVER THE MORONGO VALLEY AND YUCCA VALLEY AREAS. A 
TRAINED SPOTTER HAD REPORTED WATER ON HIGHWAY 62...AND ADDITIONAL 
RAIN THROUGH THE EVENING WILL WORSEN THE SITUATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. EXCESSIVE RUNOFF FROM HEAVY RAINFALL
WILL CAUSE FAST RISING WATER AND FLASH FLOODING OF WASHES...DRAINAGE
AREAS...HIGHWAYS...STREETS AND LOW WATER CROSSINGS. WHEN FLASH
FLOODING IS OBSERVED...MOVE QUICKLY TO HIGHER GROUND TO ESCAPE FLOOD
WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS
RISING. IT ONLY TAKES 18 INCHES OF SWIFTLY MOVING WATER TO SWEEP A
VEHICLE OFF THE ROAD...AND LESS THAN SIX INCHES OF SWIFTLY MOVING
WATER TO SWEEP A PERSON OFF THEIR FEET.

NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. WHEN YOU APPROACH
FLOOD WATERS MAKE THE SMART DECISION...TURN AROUND...DONT DROWN!

REPORT FLOODING TO YOUR LOCAL EMERGENCY MANAGEMENT OFFICE OR LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN LAS VEGAS.

&&

LAT...LON 3411 11659 3413 11648 3420 11644 3426 11644
      3433 11648 3436 11640 3431 11622 3408 11637
      3408 11644 3403 11648 3403 11661

$$

MORGAN

833 
WGUS75 KVEF 210155
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
555 PM PST MON DEC 20 2010

CAC071-210445-
/O.CON.KVEF.FF.W.0070.000000T0000Z-101221T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
555 PM PST MON DEC 20 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PST FOR SOUTH
CENTRAL SAN BERNARDINO COUNTY...

AT 550 PM PST...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING IN 
YUCCA VALLEY...WITH A FOOT OF WATER AND LARGE ROCKS OVER YUCCA TRAIL 
AT AIRWAY. RADAR SHOWED RAIN CONTINUING TO FALL OVER THE AREA...SO 
FLOODING IS LIKELY TO CONTINUE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. EXCESSIVE RUNOFF FROM HEAVY RAINFALL
WILL CAUSE FAST RISING WATER AND FLASH FLOODING OF WASHES...DRAINAGE
AREAS...HIGHWAYS...STREETS AND LOW WATER CROSSINGS. WHEN FLASH
FLOODING IS OBSERVED...MOVE QUICKLY TO HIGHER GROUND TO ESCAPE FLOOD
WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS
RISING. IT ONLY TAKES 18 INCHES OF SWIFTLY MOVING WATER TO SWEEP A
VEHICLE OFF THE ROAD...AND LESS THAN SIX INCHES OF SWIFTLY MOVING
WATER TO SWEEP A PERSON OFF THEIR FEET.

NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. WHEN YOU APPROACH
FLOOD WATERS MAKE THE SMART DECISION...TURN AROUND...DONT DROWN!

REPORT FLOODING TO YOUR LOCAL EMERGENCY MANAGEMENT OFFICE OR LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN LAS VEGAS.

&&

LAT...LON 3411 11659 3413 11648 3420 11644 3426 11644
      3433 11648 3436 11640 3431 11622 3408 11637
      3408 11644 3403 11648 3403 11661

$$

MORGAN

898 
WGUS75 KVEF 210246
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
646 PM PST MON DEC 20 2010

CAC071-210445-
/O.CON.KVEF.FF.W.0070.000000T0000Z-101221T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
646 PM PST MON DEC 20 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PST FOR SOUTH
CENTRAL SAN BERNARDINO COUNTY...

AT 636 PM PST...A TRAINED WEATHER SPOTTER REPORTED THAT THE OUTSIDE 
LANES OF HIGHWAY 62 WERE CLOSED DUE TO WATER AND MUD. RADAR SHOWED 
RAIN STILL FALLING IN THE AREA...SO FLOODING IS LIKELY TO CONTINUE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. EXCESSIVE RUNOFF FROM HEAVY RAINFALL
WILL CAUSE FAST RISING WATER AND FLASH FLOODING OF WASHES...DRAINAGE
AREAS...HIGHWAYS...STREETS AND LOW WATER CROSSINGS. WHEN FLASH
FLOODING IS OBSERVED...MOVE QUICKLY TO HIGHER GROUND TO ESCAPE FLOOD
WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS
RISING. IT ONLY TAKES 18 INCHES OF SWIFTLY MOVING WATER TO SWEEP A
VEHICLE OFF THE ROAD...AND LESS THAN SIX INCHES OF SWIFTLY MOVING
WATER TO SWEEP A PERSON OFF THEIR FEET.

NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. WHEN YOU APPROACH
FLOOD WATERS MAKE THE SMART DECISION...TURN AROUND...DONT DROWN!

REPORT FLOODING TO YOUR LOCAL EMERGENCY MANAGEMENT OFFICE OR LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN LAS VEGAS.

&&

LAT...LON 3411 11659 3413 11648 3420 11644 3426 11644
      3433 11648 3436 11640 3431 11622 3408 11637
      3408 11644 3403 11648 3403 11661

$$

MORGAN

200 
WGUS75 KVEF 210404
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
804 PM PST MON DEC 20 2010

CAC071-210445-
/O.CON.KVEF.FF.W.0070.000000T0000Z-101221T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
804 PM PST MON DEC 20 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PST FOR SOUTH
CENTRAL SAN BERNARDINO COUNTY...

AT 758 PM PST...RADAR INDICATED RAIN WAS TAPERING OFF IN THE MORONGO 
BASIN. HOWEVER...RUNOFF OUT OF THE MOUNTAINS MAY STILL CAUSE FLOODED 
ROADS...SO THE WARNING WILL REMAIN IN EFFECT UNTIL 845 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. EXCESSIVE RUNOFF FROM HEAVY RAINFALL
WILL CAUSE FAST RISING WATER AND FLASH FLOODING OF WASHES...DRAINAGE
AREAS...HIGHWAYS...STREETS AND LOW WATER CROSSINGS. WHEN FLASH
FLOODING IS OBSERVED...MOVE QUICKLY TO HIGHER GROUND TO ESCAPE FLOOD
WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS
RISING. IT ONLY TAKES 18 INCHES OF SWIFTLY MOVING WATER TO SWEEP A
VEHICLE OFF THE ROAD...AND LESS THAN SIX INCHES OF SWIFTLY MOVING
WATER TO SWEEP A PERSON OFF THEIR FEET.

NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. WHEN YOU APPROACH
FLOOD WATERS MAKE THE SMART DECISION...TURN AROUND...DONT DROWN!

REPORT FLOODING TO YOUR LOCAL EMERGENCY MANAGEMENT OFFICE OR LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN LAS VEGAS.

&&

LAT...LON 3411 11659 3413 11648 3420 11644 3426 11644
      3433 11648 3436 11640 3431 11622 3408 11637
      3408 11644 3403 11648 3403 11661

$$

MORGAN

644 
WGUS75 KVEF 210441
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
841 PM PST MON DEC 20 2010

CAC071-210451-
/O.EXP.KVEF.FF.W.0070.000000T0000Z-101221T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
841 PM PST MON DEC 20 2010

...THE FLASH FLOOD WARNING WILL EXPIRE AT 845 PM PST FOR SOUTH
CENTRAL SAN BERNARDINO COUNTY...

AT 840 PM PST...THE CALIFORNIA HIGHWAY PATROL REPORTED THAT HIGHWAY 
62 WAS OPEN THROUGH THE MORONGO BASIN. RADAR INDICATED THAT RAIN HAD 
LET UP OVER THE AREA AS WELL...SO THE FLASH FLOOD WARNING WILL BE 
ALLOWED TO EXPIRE.

LAT...LON 3411 11659 3413 11648 3420 11644 3426 11644
      3433 11648 3436 11640 3431 11622 3408 11637
      3408 11644 3403 11648 3403 11661

$$

MORGAN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
1042 AM PST MON DEC 20 2010

.SYNOPSIS...A PERSISTENT SOUTHWEST FLOW WILL BRING ABUNDANT PACIFIC
MOISTURE ACROSS THE AREA THROUGH WEDNESDAY. HEAVY SNOW WILL FALL IN
THE HIGHER ELEVATIONS OF THE SIERRA THROUGH THIS AFTERNOON.
MEANWHILE VALLEY RAIN AND HIGH ELEVATION SNOW...GENERALLY ABOVE 7000
FEET...WILL BE SEEN OFF AND ON THROUGH WEDNESDAY. DRYING CONDITIONS
WILL BE SEEN THURSDAY AND FRIDAY BEFORE ANOTHER STORM APPROACHES THE
AREA CHRISTMAS DAY.
&&

.UPDATE...SNOW LEVEL FELL IN THE SPRING MOUNTAINS AND SNOW WAS
FALLING AT THE BASE OF THE SKI AREA. MOUNT CHARLESTON FIRE STATION
REPORTED SNOW HAD FALLEN THERE OVERNIGHT. SNOW LEVELS WILL BE
BETWEEN 7000 AND 7500 FEET TODAY AND THEN AROUND 7000 FEET TUESDAY
BEFORE LOWERING MORE ON WEDNESDAY. SINCE SNOW WAS ALREADY DOWN TO
THE TOWN OF MOUNT CHARLESTON...I DECIDED TO GO OUT WITH A WINTER
STORM WARNING FOR HEAVY SNOW BEGINNING LATE THIS MORNING AND
CONTINUING THROUGH WEDNESDAY EVENING. LOOKING AT TOTAL MODEL RUN
PRECIPITATION OFF THE 12Z NAM12 AND GFS IT LOOKED LIKE AREAS BETWEEN
THE PREVIOUSLY ISSUED FLASH FLOOD WATCHES WILL ALSO SEE A THREAT FOR
HEAVY RAINFALL. FOR NOW I DECIDED TO INCLUDE ALL THE CLARK COUNTY
ZONES IN A FLASH FLOOD WATCH AND ALSO THE LAKE MEAD ZONES...SOUTHERN
NYE AND SOUTHEAST INYO COUNTY. I RAN THAT FROM NOW THROUGH TUESDAY
AFTERNOON. THAT MAY NEED TO BE EXTENDED FOR SOME ZONES INTO TUESDAY
NIGHT AND WEDNESDAY AT SOME LATER TIME.
&&

.PREV DISCUSSION...
345 AM PST MON DEC 20 2010

.SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...TROUGH CONTINUES TO
REMAIN ANCHORED OFF THE WEST COAST ALLOWING FOR A LARGE PLUME OF
MOISTURE TO FEED OVER THE CWA THIS MORNING. HOWEVER THE FOCUS OF
THIS MOISTURE WILL BE MOVING SOUTH INTO WEDNESDAY. AS SEEN ON
SATELLITE...MOISTURE CURRENTLY RIDING ACROSS CENTRAL CALIFORNIA AND
THEN INTO MAINLY WESTERN/NORTHERN NEVADA...ALTHOUGH PLENTY OF
MOISTURE ACROSS SOUTHERN CALIFORNIA/SOUTHERN NEVADA TOO. SHORTWAVE
DIGGING DOWN THE BACKSIDE OF THE TROUGH WILL DIG THE OVERALL LOW
FURTHER SOUTH INTO TUESDAY AND FINALLY CAUSE THE SYSTEM TO EJECT
EAST ACROSS NEVADA ON WEDNESDAY WITH DRYING TAKING PLACE CWA WIDE
WEDNESDAY NIGHT. AS THE TROUGH DIGS SOUTH THE MOISTURE PLUME WILL
THEN SLIDE SOUTH OVER THE SOUTHERN PORTION OF THE CWA...BEGINNING
THIS AFTERNOON...WITH THE MAIN CONCERN BEING TUESDAY INTO WEDNESDAY.
AS HAS BEEN DISCUSSED THE PAST FEW DAYS...THE MAIN FOCUS OF THIS
MOISTURE WILL BE ACROSS SAN BERNARDINO/CLARK/LINCOLN AND MOHAVE
COUNTIES WITH THE POTENTIAL FOR VERY LARGE AMOUNTS OF RAINFALL
BEGINNING THIS AFTERNOON AND CONTINUING THROUGH WEDNESDAY. QPF
TOTALS OF 3 INCHES OR GREATER DEFINITELY NOT OUT OF THE QUESTION
OVER PORTIONS OF LINCOLN/MOHAVE COUNTY BY THE TIME THE STORM LEAVES
THE AREA WEDNESDAY NIGHT. DUE TO THE LIKELY PERSISTENT RAINFALL AND
LOCALLY HEAVY RAINFALL...FLASH FLOOD WATCHES WILL BE ISSUED FOR
PORTION OF THE CWA WITH THIS PACKAGE. MEANWHILE...THE WINTER STORM
WARNING REMAINS IN EFFECT FOR THE SOUTHERN SIERRA THROUGH THIS
AFTERNOON. SNOW LEVELS HAVE LOWERED TO NEAR 4000 FEET IN THE OWENS
VALLEY...BUT DO NOT EXPECT MUCH ACCUMULATIONS IN THE VALLEY FOR
TODAY BEFORE THE SNOW BEGINS TO TAPER OFF AS THE MOISTURE SHIFTS
SOUTH. THE QUESTIONS BECOMES HOW MUCH SNOW WILL THE SOUTHERN
NEVADA/NORTHWEST ARIZONA MOUNTAINS SEE. SNOW LEVELS WILL REMAIN
HIGH...LIKELY GREATER THAN 7000 FEET THROUGH TUESDAY...BUT THEN
LOWER GOING INTO WEDNESDAY. MAY NEED WINTER PRODUCTS FOR THE HIGHER
ELEVATIONS AT A LATER TIME...BUT FOR NOW WILL JUST MONITOR. AS THE
SYSTEM MOVES SOUTH...WINDS WILL CONTINUE TO BE A FACTOR WITH STRONG
JET SHIFTING ACROSS THE CWA AND STRONG 700MB FLOW. MAIN CONCERN WILL
BE THE CONTINUATION OF DOWNSLOPE WINDS ALONG THE LEE SIDE OF THE
SPRING MOUNTAINS WHICH HAVE DEVELOPED AND POSSIBLE ADVISORY LEVEL
WINDS ACROSS MOHAVE COUNTY. WILL ISSUE A WIND ADVISORY FOR NEVADA
ZONE 19 DUE TO THE DOWNSLOPE WINDS...BUT FEEL THAT WIDESPREAD
ADVISORY LEVEL WINDS WILL NOT BE SEEN ACROSS MOHAVE...THUS WILL ONLY
MENTION BREEZY/WINDY IN THE GRIDS/ZONES FOR THIS AREA. OVERALL
PATTERN WILL CONTINUE TO KEEP DAYTIME TEMPERATURES NEAR NORMAL WHILE
OVERNIGHT LOWS STAY ABOVE NORMAL DUE TO THE CLOUD COVER.

.LONG TERM...THURSDAY THROUGH SUNDAY...SHORTWAVE RIDGING WILL BEGIN
TO BUILD ACROSS THE FORECAST AREA ON THURSDAY...FINALLY BRINGING AN
END TO A NEARLY WEEK LONG STRETCH OF DAILY PRECIPITATION ACROSS THE
REGION. THERE MAY BE SOME LINGERING PRECIP ACROSS EASTERN LINCOLN
AND MOHAVE COUNTIES THURSDAY MORNING...BUT ALL SHOULD BE CLEAR BY
THE AFTERNOON. DRY CONDITIONS AND A SLIGHT WARMING TREND CAN BE
EXPECTED THROUGH SATURDAY...BEFORE THE NEXT SYSTEM BEGINS TO IMPACT
THE REGION ON SUNDAY. THERE LOOKS TO BE AT LEAST AT SLIGHT CHANCE OF
PRECIP AREAWIDE ON SUNDAY...BUT BEST CHANCES WILL BE ACROSS NORTHERN
ZONES.
&&

.AVIATION...FOR MCCARRAN...STRONG SOUTHWESTERLY WINDS AND PERIODS OF
RAIN WILL CONTINUE THROUGH WEDNESDAY EVENING ACROSS THE VALLEY.
TODAY...PRECIP CHANCES WILL INCREASE THIS AFTERNOON...BUT EVEN
DURING PERIODS OF RAIN...EXPECT CIGS TO REMAIN ABOVE 3KFT THE
MAJORITY OF THE TIME GIVEN HOW CIGS HAVE STRUGGLED TO DROP MUCH
LATELY EVEN WITH NUMEROUS SHOWERS IN THE VICINITY OR OVER THE
TERMINAL. CIGS SHOULD REMAIN AOA 5KFT WHEN SHOWERS ARE NOT
OCCURRING. THIS IS HOW THE NEXT SEVERAL DAYS SHOULD PLAY OUT IN
GENERAL FOR THE TERMINAL...BUT ON TUESDAY/WEDNESDAY THERE IS AN
INCREASED LIKELIHOOD OF MODERATE/HEAVY PRECIP...WHICH WILL RESULT IN
BRIEF PERIODS OF FURTHER REDUCED VISIBILITIES AND LOWER CIGS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...PRECIPITATION WILL CONTINUE TO MOVE OVER THE AREA IN
BATCHES AND MAINLY BE NORTH OF A KNXP-KIGM LINE THROUGH THE
AFTERNOON...THEN EVENTUALLY SPREADING THIS EVENING TO INCLUDED AREAS
FURTHER SOUTH. MVFR TO IFR CIGS AND VSBY WILL ACCOMPANY STEADIER AND
HEAVIER PRECIPITATION...OTHERWISE CIGS WILL BE BETWEEN 5K AND 8K
FEET WITH MOUNTAIN OBSCURATIONS.
&&

&&

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...WINTER STORM WARNING UNTIL 10 PM PST WEDNESDAY FOR NVZ018-019.
     FLASH FLOOD WATCH THROUGH TUESDAY AFTERNOON FOR NVZ015>022.
AZ...FLASH FLOOD WATCH THROUGH TUESDAY AFTERNOON FOR AZZ036.
     FLASH FLOOD WATCH THROUGH WEDNESDAY AFTERNOON FOR AZZ001.
     FLASH FLOOD WATCH FROM TUESDAY AFTERNOON THROUGH WEDNESDAY
     AFTERNOON FOR AZZ003.
CA...FLASH FLOOD WATCH THROUGH TUESDAY AFTERNOON FOR CAZ522>525.
     WINTER STORM WARNING UNTIL 4 PM PST THIS AFTERNOON FOR CAZ519-
     521.
&&

JENSEN/KENNEDY

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
1236 PM PST MON DEC 20 2010

AZZ001>003-036-CAZ519>527-NVZ014>022-210800-
NORTHWEST PLATEAU-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-LINCOLN COUNTY-
NORTHEAST CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY-
SHEEP RANGE-SPRING MOUNTAINS-LAS VEGAS VALLEY-
SOUTHERN CLARK COUNTY-
1236 PM PST MON DEC 20 2010 /136 PM MST MON DEC 20 2010/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

WIDESPREAD VALLEY RAIN AND MOUNTAIN SNOW IS EXPECTED THROUGH
TONIGHT. HEAVY SNOW IN THE SIERRA THIS AFTERNOON WILL DIMINISH
TONIGHT AND THE WINTER STORM WARNING REMAINS IN EFFECT THERE UNTIL
4 PM. A WINTER STORM WARNING FOR HEAVY SNOW AND STRONG WINDS IS
ALSO IN EFFECT FOR THE SPRING MOUNTAINS AND SHEEP RANGE IN
SOUTHERN NEVADA THIS AFTERNOON AND TONIGHT. A FLASH FLOOD WATCH IS
IN EFFECT OVER MOST OF SAN BERNARDINO COUNTY...CLARK
COUNTY...LINCOLN COUNTY...SOUTHEAST INYO AND SOUTHERN NYE COUNTY
AND NORTHWEST MOHAVE COUNTY THIS AFTERNOON AND TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

WIDESPREAD VALLEY RAIN AND MOUNTAIN SNOW WILL CONTINUE THROUGH
WEDNESDAY EVENING. A WINTER STORM WARNING IS IN EFFECT FOR THE
SPRING MOUNTAINS AND SHEEP RANGE THROUGH WEDNESDAY EVENING. A
FLASH FLOOD WATCH IS IN EFFECT TUESDAY FOR MOST OF THE SOUTHEAST
HALF OF THE COUNTY WARNING AREA WHICH CONTINUES FOR MOST OF MOHAVE
COUNTY TUESDAY NIGHT AND WEDNESDAY. DRY CONDITIONS ARE THEN
EXPECTED THURSDAY AND FRIDAY BEFORE A LOW PRESSURE SYSTEM BRINGS A
CHANCE OF SNOW TO THE SIERRA LATE SATURDAY AND TO SOUTHERN NEVADA
SATURDAY NIGHT INTO SUNDAY.

.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
940 AM PST MON DEC 20 2010

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

0300 PM     NON-TSTM WND DMG PIOCHE                  37.93N 114.45W
12/19/2010                   LINCOLN            NV   CO-OP OBSERVER

            CO-OP OBSERVER REPORTED DAMAGING WINDS BETWEEN 3 AND 4
            P.M. THE WINDS KNOCKED DOWN TWO POWER LINES.

&&

JHURLEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1139 AM PST MON DEC 20 2010

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

1024 AM     HEAVY SNOW       1 WNW ASPENDELL         37.24N 118.60W
12/20/2010  E0.0 INCH        INYO               CA   TRAINED SPOTTER

            A SPOTTER REPORTED 56 INCHES AS OF 500 AM. AT 1000 AM,THE
            SPOTTER MEASURED 74 INCHES OF SNOWFALL.

&&

JHURLEY

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LAS VEGAS NV
1141 AM PST MON DEC 20 2010

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

1024 AM     HEAVY SNOW       1 WNW ASPENDELL         37.24N 118.60W
12/20/2010  M74.0 INCH       INYO               CA   TRAINED SPOTTER

            A SPOTTER REPORTED 56 INCHES AS OF 500 AM. AT 1000 AM,THE
            SPOTTER MEASURED 74 INCHES OF SNOWFALL.

&&

JHURLEY