Flash Flood Warning 137, NWS Las Vegas, NV

396 
WGUS75 KVEF 262024
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
124 PM MST TUE AUG 26 2014

AZC015-262215-
/O.CON.KVEF.FF.W.0137.000000T0000Z-140826T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
124 PM MST TUE AUG 26 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM MST FOR SOUTH
CENTRAL MOHAVE COUNTY...

RADAR RAINFALL ESTIMATES AND AUTOMATED GAGES INDICATE THAT 1 TO 2 INCHES
OF RAIN FELL FROM THUNDERSTORMS ACROSS A LARGE AREA BETWEEN WIKIEUP...
ALAMO LAKE STATE PARK AND THE BILL WILLIAMS RIVER. THE THUNDERSTORMS
HAD LARGELY MOVED AWAY TO THE EAST BY 1 PM BUT WASHES IN THE AREA
WILL BE FLOWING THE NEXT COUPLE HOURS.

LOCATIONS IMPACTED INCLUDE...
BIG SANDY RIVER
BURRO CREEK CAMPGROUND
ALAMO LAKE STATE PARK
BILL WILLIAMS RIVER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!

REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3423 11374 3421 11383 3425 11386 3424 11392
      3433 11400 3446 11400 3473 11361 3479 11333
      3430 11334 3428 11336 3430 11353 3424 11358
      3421 11365 3421 11371

$$

JA

549 
WGUS75 KVEF 262209
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
309 PM MST TUE AUG 26 2014

AZC015-262217-
/O.EXP.KVEF.FF.W.0137.000000T0000Z-140826T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
309 PM MST TUE AUG 26 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 315 PM MST FOR SOUTH
CENTRAL MOHAVE COUNTY...

RUNOFF FROM THE HEAVY RAIN THAT OCCURRED BETWEEN WIKIEUP...ALAMO
LAKE AND THE BILL WILLIAMS RIVER EARLY THIS AFTERNOON HAS LIKEKLY
RECEDED BY NOW. THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE
ON SCHEDULE AT 315 PM MST.

LAT...LON 3423 11374 3421 11383 3425 11386 3424 11392
      3433 11400 3446 11400 3473 11361 3479 11333
      3430 11334 3428 11336 3430 11353 3424 11358
      3421 11365 3421 11371

$$

JA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
820 AM PDT TUE AUG 26 2014

.SYNOPSIS...A LOW PRESSURE SYSTEM OVER NORTHERN NEVADA AND MONSOON
MOISTURE SEEPING UP FROM THE SOUTH WILL PRODUCE A RISK OF SEVERE
WEATHER AND FLASH FLOODING TODAY...MAINLY OVER MOHAVE COUNTY BUT
POSSIBLY EXTENDING INTO THE EASTERN PORTIONS OF NEIGHBORING
COUNTIES. DRIER AIR WILL MOVE IN BEGINNING TOMORROW...WITH ONLY A
SLIGHT CHANCE OF THUNDERSTORMS OVER MOHAVE COUNTY...FOLLOWED BY DRY
WEATHER AREAWIDE THURSDAY THROUGH THE WEEKEND.
&&

.UPDATE...
QUICK UPDATE THIS MORNING TO INCREASE POPS FROM TWENTYNINE PALMS TO
NEEDLES. AREA OF SHOWERS AND A FEW THUNDERSTORMS ARE ONGOING. THE
FORCING ASSOCIATED WITH THIS ACTIVITY WILL PUSH INTO MOHAVE COUNTY
THIS MORNING AND AFTERNOON. ALREADY STARTING TO SEE SOME BETTER
STORM DEVELOPMENT NEAR OATMAN AND MOVING TOWARD KINGMAN. THE
CONCERNS TODAY REMAIN STRONG STORMS AND TRAINING OF STORMS ALONG THE
HIGHER TERRAIN OF MOHAVE COUNTY.

.PREVIOUS DISCUSSION...
252 AM PDT TUE AUG 26 2014

.SHORT TERM...THROUGH THURSDAY NIGHT...STILL CONCERNED ABOUT SEVERE
WEATHER AND FLASH FLOODING OVER MOHAVE COUNTY THIS AFTERNOON.
PRECIPITABLE WATER SENSORS SHOWED A NICE GRADIENT BETWEEN HIGHER
VALUES /AN INCH AND A HALF/ OVER IMPERIAL COUNTY CALIFORNIA AND
LOWER VALUES /THREE QUARTERS OF AN INCH/ AT KINGMAN. WATER VAPOR
LOOP SHOWED UPPER LOW WAS JUST SOUTH OF RENO EARLY THIS
MORNING...AND SOUTH TO SOUTHWEST WINDS AHEAD OF IT WILL PULL DEEPER
MOISTURE NORTH OVER MOHAVE COUNTY AND EASTERN PORTIONS OF
CLARK...LINCOLN...AND SAN BERNARDINO WHILE ALSO MAINTAINING THE
TIGHT MOISTURE GRADIENT JUST TO THE WEST. SOUTHWEST TO WEST WINDS
ALOFT WILL PROVIDE VERTICAL WIND SHEAR WHICH WILL FAVOR MORE
ORGANIZED THUNDERSTORMS AS OPPOSED TO THE TYPICAL PULSE STORMS WE
SEE FOR MOST OF THE SUMMER MONSOON SEASON. FLASH FLOOD WATCH LOOKS
GOOD...AND AS NOTED BY PREVIOUS SHIFTS...SEVERE WEATHER IS A CONCERN
AS WELL. THE LOW STARTS TO MOVE EAST TOMORROW...PULLING IN DRY AIR
BEHIND IT AND LIMITING PRECIP CHANCES TO MOHAVE COUNTY. HIGH
PRESSURE BUILDS IN ON THURSDAY FOR DRY WEATHER AREAWIDE.
TEMPERATURES WILL BE A BIT BELOW NORMAL TODAY AND WEDNESDAY THEN
WARM TO NEAR NORMAL ON THURSDAY.

.LONG TERM...FRIDAY THROUGH TUESDAY.

HIGH PRESSURE IS FORECAST TO BE PUSHED SOUTH BY THE END OF THE WEEK
AS A TROUGH OF LOW PRESSURE MOVES INTO THE WESTERN STATES. THIS WILL
BRING SOME SLIGHTLY COOLER TEMPERATURES TO THE REGION...BUT ALSO
SOME BREEZY AFTERNOON WINDS BY SUNDAY AND MONDAY. ALTHOUGH
TEMPERATURES WILL COOL SLIGHTLY THEY ARE STILL EXPECTED TO REMAIN
RIGHT AROUND NORMAL FOR THIS TIME OF YEAR. THIS TROUGH IS EXPECTED
TO SLOWLY PUSH EAST WHICH WILL KEEP THE GENERAL WIND FLOW SOUTHWEST
TO WEST INTO EARLY NEXT WEEK. WITH THIS TYPE OF PATTERN ANY
MONSOONAL MOISTURE WILL HAVE A HARD TIME WORKING NORTH INTO THE CWA.
ITS WAY TOO EARLY TO DECLARE AN END TO THE MONSOON...BUT THERE LOOKS
TO BE AN EXTENDED BREAK AT LEAST THROUGH THE MIDDLE OF NEXT WEEK.
&&

.AVIATION...FOR MCCARRAN...THUNDERSTORMS WILL BE LIKELY OVER THE
PEACH SPRINGS AND MORMON MESA CORRIDORS THIS AFTERNOON AND
EVENING...WITH AN OUTSIDE CHANCE OF A STORM NEAR THE TERMINAL AS
WELL. EASTERLY OUTFLOW WINDS FROM THUNDERSTORMS TO THE EAST WILL BE
POSSIBLE THIS AFTERNOON THROUGH TONIGHT. THERE WILL ONLY BE A SLIGHT
CHANCE OF THUNDERSTORMS IN THE PEACH SPRINGS CORRIDOR ON WEDNESDAY
THEN DRY WEATHER IS EXPECTED ON THURSDAY.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...THUNDERSTORMS WILL BE LIKELY OVER MOHAVE COUNTY THIS
AFTERNOON AND EVENING AND ALSO POSSIBLE OVER EASTERN PORTIONS OF
CLARK...LINCOLN...AND SAN BERNARDINO COUNTIES. SEVERE WEATHER AND
VERY HEAVY RAIN WILL BE POSSIBLE. THERE WILL BE ONLY A SLIGHT CHANCE
OF THUNDERSTORMS OVER MOHAVE COUNTY WEDNESDAY FOLLOWED BY DRY
WEATHER AREAWIDE ON THURSDAY.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTERS SHOULD REPORT HEAVY
RAINFALL...FLASH FLOODING...STRONG WINDS...BLOWING DUST...AND HAIL
TODAY. THE MAIN AREA IMPACTED WILL BE MOHAVE COUNTY...WITH CHANCES
ALSO IN EASTERN CLARK...EASTERN LINCOLN...AND EASTERN SAN BERNARDINO
COUNTIES.
&&

UPDATE...PADDOCK
PREVIOUS DISCUSSION...MORGAN/GORELOW

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

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