Drought Information Statement
Issued by NWS Las Vegas, NV

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AXUS75 KVEF 190247
DGTVEF

DGTVEF AZZ001>003-036-CAZ519>527-NVZ014-022-300700-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
747 PM PST SAT APR 18 2015

...EXCEPTIONAL DROUGHT CONDITIONS REMAIN IN THE EASTERN SLOPES OF
THE SOUTHERN SIERRA NEVADA WITH MODERATE TO SEVERE DROUGHT
CONDITIONS ELSEWHERE...

SYNOPSIS...AFTER A WET START TO MARCH, DRY CONDITIONS PERSISTED
THROUGHOUT THE REST OF THAT MONTH AND INTO THE FIRST TWO-THIRDS OF
APRIL. ONLY ONE WEAK SYSTEM HAS TRIGGERED ANY PRECIPITATION ACROSS
THE AREA DURING APRIL, WHICH TOOK PLACE ON THE 7TH. HOWEVER, THIS
PRECIPITATION WAS VERY LIGHT AND SPOTTY IN AERIAL COVERAGE.

SNOWPACK CONTINUED TO DWINDLE THROUGH MARCH AND INTO APRIL AND BASED
ON THE SNOW SURVEY CONDUCTED IN THE SIERRA NEVADA BY THE STATE OF
CALIFORNIA ON APRIL 1ST STOOD AT A HISTORIC LOW FOR THE DATE. IN
INYO COUNTY, THE TOTAL SNOWFALL THIS SEASON AT ASPENDELL AT 8500
FEET STANDS AT 47.5 INCHES FOR THE SEASON BASED ON MEASUREMENTS FROM
A SPOTTER. THIS IS THE LOWEST TOTAL FOR THE SEASON SO FAR SINCE THE
DROUGHT STARTED IN LATE 2011.

OVER THE MOJAVE DESERT, THE COMBINATION OF ENOUGH WINTER
PRECIPITATION AND MILD TEMPERATURES HAS BEEN ENOUGH TO RESULT IN AN
EARLY GREEN-UP OF VEGETATION AND A NICE WILDFLOWER BLOOM IN THE
LOWER AND MIDDLE ELEVATIONS. THUS THE DROUGHT IN THESE AREAS HAS NOT
DETERIORATED BUT SHOWN SOME SIGNS OF IMPROVEMENT.

THE LATEST U.S. DROUGHT MONITOR DEPICTS THAT THE EASTERN SLOPES OF
THE SOUTHERN SIERRA NEVADA, THE WHITE MOUNTAINS OF INYO COUNTY, THE
NORTHERN PORTION OF THE OWENS VALLEY OF CALIFORNIA AND WESTERN
ESMERALDA COUNTY, NEVADA ARE NOW IN D4, OR EXCEPTIONAL DROUGHT.
EXTREME DROUGHT, OR D3 CONDITIONS, EXISTS ACROSS EASTERN ESMERALDA
COUNTY AND CENTRAL NYE COUNTY, NEVADA AS WELL AS FAR NORTHWESTERN
SAN BERNARDINO COUNTY ALL BUT FAR SOUTHEAST INYO COUNTY IN
CALIFORNIA AS WELL AS FAR NORTHEAST MOHAVE COUNTY, ARIZONA. SEVERE
DROUGHT CONDITIONS, OR D2, EXIST ACROSS SOUTHWEST LINCOLN COUNTY
AND NORTHWEST CLARK COUNTY IN NEVADA, CENTRAL SAN BERNARDINO COUNTY
AND NORTHEAST MOHAVE COUNTY. DUE TO THE SEVERITY OF THE ONGOING
DROUGHT, DROUGHT CONDITIONS ARE EXPECTED TO PERSIST ACROSS THE AREA
DESPITE THE THE LATEST SEASONAL FORECAST (MAY THROUGH JULY) ISSUED
BY THE CLIMATE PREDICTION CENTER. THIS FIRECAST CALLS FOR SLIGHTLY
ABOVE AVERAGE CONFIDENCE FOR ABOVE NORMAL PRECIPITATION ACROSS
NORTHWEST ARIZONA AND SOUTHEAST NEVADA WITH EQUAL CHANCES FOR ABOVE
NORMAL, NEAR NORMAL OR BELOW NORMAL PRECIPITATION ACROSS THE REST OF
SOUTHERN NEVADA, LOWER COLORADO RIVER VALLEY AND CALIFORNIA. THERE
IS ABOVE AVERAGE CONFIDENCE IN ABOVE NORMAL TEMPERATURES ACROSS THE
ENTIRE AREA WITH THE GREATEST CONFIDENCE OVER SOUTHEAST CALIFORNIA
AND SOUTHERN NEVADA.

SUMMARY OF IMPACTS...

AGRICULTURAL

THE INYO COUNTY, CALIFORNIA SUPERVISORS APPROVED A 23 PERCENT
REDUCTION IN IRRIGATION IN THE BISHOP CONE OF THE LOS ANGELES
DEPARTMENT OF WATER AND POWER`S AREA. RUNOFF INTO THE BISHOP CREEK
WATERSHED IS EXPECTED TO BE 50 PERCENT OF NORMAL FOR THE YEAR. THE
IRRIGATION MANAGEMENT IN PLACE WILL RESULT IN ALLOTTED DAYS FOR
WATER TO BE AVAILABLE FOR RANCHERS. THE BISHOP CREEK WATER
ASSOCIATION IS WORKING ON CONSERVATION MEASURES ALONG WITH SOUTHERN
CALIFORNIA EDISON, THE LOS ANGELES DEPARTMENT OF WATER AND POWER AS
WELL AS THE BISHOP PAIUTE TRIBE.

THE 2015 DEPARTMENT OF AGRICULTURE SECRETARIAL DROUGHT DESIGNATIONS
WERE ANNOUNCED EARLIER IN THE MONTH. THE U.S. DEPARTMENT OF
AGRICULTURE DESIGNATED CLARK, NYE, AND ESMERALDA COUNTIES IN NEVADA,
INYO AND SAN BERNARDINO COUNTIES IN CALIFORNIA AS PRIMARY NATURAL
DISASTER AREAS DUE TO THE ONGOING DROUGHT. LINCOLN COUNTY NEVADA AND
MOHAVE COUNTY ARIZONA QUALIFY AS CONTIGUOUS COUNTIES. FARM AND RANCH
OPERATORS IN THOSE COUNTIES ALL QUALIFY FOR LOW INTEREST EMERGENCY
LOANS FROM THE USDA FARM SERVICE AGENCY, PROVIDED ELIGIBILITY
REQUIREMENTS ARE MET.

LIVESTOCK PRODUCERS USING RANGELAND MAY NEED TO PROVIDE SUPPLEMENTAL
FEED FOR CATTLE. SOME RANCHERS IN NORTHWEST ARIZONA, THE OWENS
VALLEY OF CALIFORNIA AND LINCOLN COUNTY, NEVADA HAVE INCREASED WATER
HAULS FOR LIVESTOCK.

GROUND WATER

NEVADA GOVERNOR SANDOVAL ISSUED AN EXECUTIVE ORDER ESTABLISHING A
NEVADA DROUGHT FORUM TO BRING TOGETHER THE BEST MINDS, MANAGERS AND
ALL INTERESTED STAKEHOLDERS TO ACCESS THE DROUGHT IN NEVADA. THE
FORUM WILL IDENTIFY BEST CONSERVATION PRACTICES AND POLICY NEEDS,
AND MAKE RECOMMENDATIONS TO THE GOVERNOR REGARDING A PLAN.

THE LOS ANGELES DEPARTMENT OF WATER AND POWER IS PLANNING FOUR NEW
PRODUCTION WELLS IN INYO COUNTY. ONE WILL REPLACE A WELL IN LAWS,
TWO IN BISHOP AND ONE IN BELL CANYON WEST OF BIG PINE.

THE NEVADA 78TH LEGISLATURE IS DISCUSSING TWO BILLS RELATED TO
GROUND WATER. SENATE BILL 65 WOULD UPDATE LANGUAGE AFFECTING WATER
RIGHTS AND GROUNDWATER AS WELL AS IMPLEMENT SEVERAL CHANGES TO LAWS
AFFECTING DOMESTIC WELLS. THE BILL REMAINS IN THE SENATE GOVERNMENT
AFFAIRS COMMITTEE. SENATE BILL 81 EXPANDS THE POWER OF THE STATE`S
WATER AUTHORITY TO GOVERN AND MANAGE GROUNDWATER SHORTAGES IN AREAS
SUFFERING FROM SEVERE DROUGHT. THE BILL REMAINS IN THE SENATE
FINANCE COMMITTEE.

INYO COUNTY SUPERVISORS PASSED A THREE-PAGE DROUGHT PROCLAMATION FOR
INYO COUNTY. THEY NOTED THE SERIOUSNESS OF THE SITUATION BY
POINTING OUT THE VERY LOW SNOWPACK IN THE SOUTHERN SIERRA, DRY WELLS
AROUND BISHOP AND CONCERNS ABOUT USE OF WATER ON THE DRY LAKE AND
THE NEED FOR LOS ANGLES DEPARTMENT OF WATER AND POWER AND INYO
COUNTY TO PLAN FOR DRY TIMES.

RECREATION/TOURISM

THE LOW LAKE LEVELS IN LAKE MEAD CONTINUE TO IMPACT RECREATIONAL
BOATING CHANNELS BY REDUCING AREAS THAT BOATS CAN PASS THROUGH. THE
FALLING LAKE LEVEL HAS RESULTED IN THE CONTINUED CLOSURE OF THE ECHO
BAY MARINA AND BOAT LAUNCH RAMP AT ECHO BAY.

NATURAL SPRINGS IN THE SHEEP MOUNTAIN RANGE IN SOUTHERN NEVADA HAVE
RUN DRY IN SOME INSTANCES FORCING HIKERS TO HAVE TO BRING WATER WITH
THEM.

THE LACK OF SNOW HAS RESULTED IN THE SNOW TUBING AREA ON MT
CHARLESTON AT THE LAS VEGAS SKI AND SNOWBOARD RESORT BEING CLOSED.

THE NATURAL SPRING THAT PROVIDED WATER TO THE MOUNT CHARLESTON YOUTH
CAMP HAS STOPPED FLOWING. CLARK COUNTY WILL NEED TO SPEND ABOUT
$250,000 FOR WATER SHIPMENTS OVER A 38 WEEK PERIOD.

FIRE WEATHER

ABOVE NORMAL SIGNIFICANT WILDFIRE POTENTIAL IN MAY WILL EXPAND
ACROSS PARTS OF SOUTHERN AND CENTRAL CALIFORNIA AS WELL AS
SOUTHWEST ARIZONA. IN JUNE AND JULY, THE POTENTIAL WILL EXPAND
ACROSS THE WEST COAST, GREAT BASIN AND WESTERN ARIZONA.

THE ROUND FIRE DEVELOPED IN FAR NORTHWEST INYO COUNTY JUST NORTHWEST
OF BISHOP AND CROSSED THE COUNTY LINE INTO MONO COUNTY, CALIFORNIA
ON FEBRUARY 6TH BURNING 6532 ACRES.

WILDLIFE

IN LINCOLN COUNTY, ESPECIALLY IN NORTHERN PORTIONS, WILD HORSES HAVE
BEGUN TO COME ONTO GRAZING LANDS AND EAT FORAGE INTENDED FOR GRAZING
CATTLE AND OTHER WILDLIFE. THIS HAS RESULTED IN DAMAGE TO SOME
GRAZING LANDS.

CLIMATE SUMMARY...

STORM SYSTEMS IN LATE FEBRUARY AND EARLY MARCH PUSHED UP
PRECIPITATION TOTALS FOR THE WATER YEAR ESPECIALLY IN THE MOJAVE
DESERT.

 ARIZONA            PCPN        NORMAL     PER   CHG

 BEAVER DAM         2.64         4.82      55    +8%
 PIPE SPRING NM     4.59         4.68      98    +29%
 KINGMAN            4.83         6.04      80    +10%
 WIKIEUP            3.73         6.44      58    +18%

 CALIFORNIA

 BISHOP             0.73         4.05      18    -3%
 DEATH VALLEY NP    1.45         1.75      83     0%
 BARSTOW-DAGGETT    1.80         2.85      63    +2%
 NEEDLES            2.39         3.21      74    +21%
 JOSHUA TREE        1.78         3.51      51    +6%

 NEVADA

 LAS VEGAS          1.99         2.87      69    +13%
 MT CHARLESTON      8.64        16.94      51    +3%
 PAHRUMP            2.81         3.40      83    +1%
 MESQUITE           3.16         5.26      60    +8%
 CALIENTE           3.10         5.47      57     0%
 DYER               1.38         2.70      51    -17%

 PCPN   -
 NORMAL - WATER YEAR NORMAL (STARTS OCT 1)
 PER    - PERCENT OF NORMAL
 CHG    - CHANGE FROM PREVIOUS MONTH

 PRECIPITATION/TEMPERATURE OUTLOOK...

THE LATEST SEASONAL FORECAST (MAY THROUGH JULY)...ISSUED BY THE
CLIMATE PREDICTION CENTER...THERE IS SLIGHTLY ABOVE AVERAGE
CONFIDENCE FOR ABOVE NORMAL PRECIPITATION ACROSS NORTHWEST ARIZONA
AND SOUTHEAST NEVADA WITH EQUAL CHANCES FOR ABOVE NORMAL, NEAR
NORMAL OR BELOW NORMAL PRECIPITATION ACROSS THE REST OF SOUTHERN
NEVADA, LOWER COLORADO RIVER VALLEY AND CALIFORNIA. THERE IS ABOVE
AVERAGE CONFIDENCE IN ABOVE NORMAL TEMPERATURES ACROSS THE ENTIRE
AREA WITH THE GREATEST CONFIDENCE OVER SOUTHEAST CALIFORNIA AND
SOUTHERN NEVADA.

 HYDROLOGIC SUMMARY AND OUTLOOK...

MID-APRIL UPDATE FOR THE COLORADO RIVER BASIN SHOWED A FURTHER
DECREASE IN RUNOFF VOLUMES ACROSS MOST OF THE BASIN FROM THE FIRST
OF THE MONTH FORECAST. MINOR FALLOFF IN FORECAST VOLUMES WERE SEEN
IN THE NORTHERN GREAT BASIN AND UPPER GREEN RIVER BASINS. LARGER
DECREASES OCCURRED IN THE HEADWATER OF THE COLORADO RIVER MAINSTEM,
GUNNISON RIVER BASIN AND THE SAN JUAN RIVER BASIN. IN THE VIRGIN
RIVER BASIN AND LOWER COLORADO RIVER BASIN OF ARIZONA CHANGES WERE
INSIGNIFICANT. THE LAKE POWELL INFLOW FORECAST DECREASED 350
THOUSAND ACRE-FEET, FROM 52 TO 47 PERCENT OF AVERAGE AND IS NOW AT
3.4 MILLION ACRE-FEET.

AS OF APRIL 17 2015, LAKE MEAD`S ELEVATION WAS 1081.5 FEET OR 39
PERCENT CAPACITY. THE BUREAU OF RECLAMATION HAS PROJECTED TO RELEASE
9.0 MAF FROM LAKE POWELL IN WATER YEAR 2015...UP FROM THE 7.48 MAF
FOR 2014 WATER YEAR. HOWEVER, DOWNSTREAM REQUIREMENTS ARE ESTIMATED
AROUND 9.687 MAF. LAKE MEAD`S ELEVATION/STORAGE HAS PEAKED AND IS
FORECAST TO CONTINUE TO DECLINE THROUGH THE REST OF THE 2015 WATER
YEAR (END OF SEPTEMBER). THE ELEVATION IS PROJECTED TO DROP BELOW
1080.0 FEET BY THE END OF APRIL OR EARLY MAY. LAKE MEAD HAS NOT
RECORDED LAKE LEVELS BELOW 1080 FEET SINCE THE RESERVOIR WAS BEING
FILLED IN MAY 1937.

LAKE POWELL`S ELEVATION WAS 3590.7 OR 45 PERCENT CAPACITY.

DATA FOR RESERVOIRS ACROSS THE REGION (AS OF 4/17/2015)

 RESERVOIR                      PERCENT FULL

LAKE MEAD                           39
LAKE MOHAVE                         94
LAKE HAVASU                         95

NEXT ISSUANCE DATE...

DROUGHT INFORMATION STATEMENTS ARE NORMALLY ISSUED ON THE THIRD
THURSDAY OF EACH MONTH IN WHICH EXTREME DROUGHT CONDITIONS EXIST IN
ANY PORTION OF THE SOUTHERN GREAT BASIN AND MOJAVE DESERT. THE NEXT
SCHEDULED ISSUANCE IS THURSDAY, MAY 21, 2015. IF A SIGNIFICANT
CHANGE IN THE DROUGHT CONDITION IS ANTICIPATED...OR OCCURS PRIOR TO
THIS DATE...AN UPDATED STATEMENT WILL BE ISSUED.
&&

RELATED WEBSITES...

ADDITIONAL INFORMATION IS AVAILABLE AT THE FOLLOWING WEB SITES:

U.S. DROUGHT MONITOR
DROUGHTMONITOR.UNL.EDU

NATIONAL INTEGRATED DROUGHT INFORMATION SYSTEM
WWW.DROUGHT.GOV

CLIMATE PREDICTION CENTER
WWW.CPC.NCEP.NOAA.GOV

ADDITIONAL RIVER INFORMATION...

NATIONAL WEATHER SERVICE     WATER.WEATHER.GOV/AHPS
USGS                         WATER.USGS.GOV/
COLORADO BASIN RFC           WWW.CBRFC.NOAA.GOV
CALIFORNIA-NEVADA RFC        WWW.CNRFC.NOAA.GOV

ADDITIONAL SITES:

NEVADA DIVISION OF WATER RESOURCES   WATER.NV.GOV
CALIFORNIA DEPT OF WATER RESOURCES   WWW.WATER.CA.GOV
ARIZONA DEPT OF WATER RESOURCES      WWW.AZWATER.GOV

NEVADA STATE CLIMATE OFFICE          WWW.CLIMATE.UNR.EDU
CALIFORNIA STATE CLIMATE OFFICE      WWW.CLIMATE.WATER.CA.GOV
ARIZONA STATE CLIMATE OFFICE         AZCLIMATE.ASU.EDU
WESTERN REGION CLIMATE CENTER        WWW.WRCC.DRI.EDU

NWS FORECAST OFFICE LAS VEGAS        WEATHER.GOV/LASVEGAS

ACKNOWLEDGMENTS...
THE DROUGHT MONITOR IS A MULTI-AGENCY EFFORT INVOLVING THE NATIONAL
WEATHER SERVICE AND NATIONAL AND WESTERN REGIONAL CLIMATIC
DATA CENTERS...THE USDA...STATE AND REGIONAL CENTER CLIMATOLOGISTS
AND THE NATIONAL DROUGHT MITIGATION CENTER.

QUESTIONS OR COMMENTS...
IF YOU HAVE ANY QUESTIONS OR COMMENTS...PLEASE CONTACT:

NATIONAL WEATHER SERVICE - LAS VEGAS
PHONE...702-263-9744
W-VEF.WEBMASTER@NOAA.GOV

$$

WFO LAS VEGAS

!--NOT SENT--!



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