Drought Information Statement
Issued by NWS Las Vegas, NV

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AXUS75 KVEF 212009
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AZZ001>003-036-CAZ519>527-NVZ014-022-212008-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
108 PM PDT MON APR 21 2014

...EXCEPTIONALLY DRY WINTER SEASON HAS DROUGHT CONDITIONS WORSENING
ACROSS PARTS OF THE SOUTHERN GREAT BASIN AND MOJAVE DESERT...

SYNOPSIS...ANY SHORT TERM BENEFIT FROM THE PRECIPITATION THAT FELL
IN LATE FEBRUARY AND EARLY MARCH HAS DIMINISHED QUICKLY AS THE AREA
HAS EXPERIENCED A WARM AND DRY MARCH AND FIRST TWO-THIRDS OF APRIL.

ALTHOUGH A FEW STORM SYSTEMS PASSED ACROSS THE AREA DURING MARCH
2014, THE MONTH WILL BEST BE NOTED FOR THE RELATIVELY PERSISTENT
WARM WEATHER. THIS ALLOWED FOR VEGETATION TO BLOOM AHEAD OF SCHEDULE
ACROSS THE AREA FOLLOWING THE RELATIVELY MILD WINTER THE AREA
EXPERIENCED. ON THE OTHER HAND, THE LACK OF PRECIPITATION ALLOWED
FOR DROUGHT CONDITIONS TO BECOME WORSE ACROSS THE AREA.

LIGHT AMOUNTS OF PRECIPITATION FELL ACROSS FAR NORTHERN PORTIONS OF
THE AREA ON MARCH 6TH AND 10TH AS SYSTEMS GRAZED THE AREA. ON MARCH
26TH ANOTHER SYSTEM PRESSED THROUGH THE AREA BRINGING LIGHT
PRECIPITATION. A SERIES OF SYSTEMS BROUGHT LIGHT PRECIPITATION TO
THE AREA ON MARCH 30TH AND 31ST...WITH ADDITIONAL LIGHT
PRECIPITATION FALLING ON APRIL 1ST AND 2ND AS WELL AS ON THE 11TH
AND 12TH. HOWEVER, IN MOST OF THESE EVENTS, AMOUNTS WERE UNDER A
TENTH OF AN INCH ON MOST CASES.

THE LATEST U.S. DROUGHT MONITOR DEPICTS EXTREME DROUGHT ACROSS THE
EASTERN SIERRA SLOPES AND OWENS VALLEY OF INYO COUNTY. MODERATE TO
SEVERE DROUGHT CONDITIONS ARE PRESENT ACROSS THE REMAINDER OF THE
SOUTHERN GREAT BASIN AND MOJAVE DESERT. DROUGHT CONDITIONS ARE
EXPECTED TO PERSIST OR BECOME WORSE AS THERE ARE HIGHER THAN NORMAL
CHANCES OF BELOW NORMAL PRECIPITATION FOR THE NEXT 3 MONTHS.

SUMMARY OF IMPACTS...

FIRE WEATHER

THE FIRE SEASON MAY BE MORE ACTIVE DUE TO THE LACK OF PRECIPITATION.
LARGER/HEAVIER FUELS IN THE MOUNTAINS MAY BE MORE SUSCEPTIBLE TO
LARGE FIRES DUE TO THE LACK OF SNOWPACK. HOWEVER...THE LACK OF
PRECIPITATION IN THE LOWER ELEVATIONS COULD INHIBIT GROWTH OF NEW
GRASSES LEADING TO LESS FUEL LOADS TO BURN. ABOVE NORMAL SIGNIFICANT
FIRE POTENTIAL FOR APRIL AND MAY 2014 IS POSSIBLE IN THE MOUNTAINS
AND FOOTHILLS OF CALIFORNIA. ELSEWHERE...THE OUTLOOK CALLS FOR A
NORMAL SIGNIFICANT FIRE POTENTIAL FOR THE SOUTHERN GREAT BASIN AND
MOJAVE DESERT. JUNE THROUGH JULY...ABOVE NORMAL SIGNIFICANT FIRE
POTENTIAL WILL CONTINUE IN THE CALIFORNIA MOUNTAINS AND FOOTHILLS.
ELSEWHERE IN SOUTHERN NEVADA AND NORTHWEST ARIZONA THE SIGNIFICANT
WILDLAND FIRE POTENTIAL OUTLOOK WILL BE INCREASING TO ABOVE NORMAL
DUE TO CONTINUED DROUGHT ALONG WITH THE DRY LIGHTNING POTENTIAL.

AGRICULTURAL

THE UNITED STATES DEPARTMENT OF AGRICULTURE DESIGNATED CLARK, NYE,
LINCOLN AND ESMERALDA COUNTIES IN NEVADA, MOHAVE COUNTY IN ARIZONA
AND INYO AND SAN BERNARDINO COUNTIES IN CALIFORNIA AS PRIMARY
NATURAL DISASTER AREAS DUE TO THE RECENT DROUGHT. ALL 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 AND THE OWENS
VALLEY HAVE INCREASED WATER HAULS FOR LIVESTOCK.

GROUND WATER

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.

THE WATER TABLE ACROSS PARTS OF THE OWENS VALLY HAS FALLEN. THERE
HAS BEEN SEVERAL REPORTS OF WELLS AROUND WEST BISHOP GOING DRY.
THESE WELLS WERE QUITE SHALLOW AROUND 30 FEET DEEP. NEW WELLS ARE
BEING DRILLED AT A COST OF AROUND 20000 DOLLARS. THE LOWERING OF THE
WATER TABLE CAN BE ATTRIBUTED TO THE LACK OF RAIN AND SNOW
RECHARGING THE AQUIFER.

WATER SUPPLY

FOR THE EASTERN SLOPES OF THE SOUTHERN SIERRA THE SNOW WATER
EQUIVALENT AS OF APRIL 8 AT MAMMOTH PASS WAS 19.2 INCHES. THE LONG
TERM MEAN FOR MID-APRIL SHOULD BE AROUND 40 INCHES. THE LATEST
APRIL-JULY VOLUME RUNOFF FOR THE AREA STANDS AT LESS THAN 50 PERCENT
OF NORMAL.

THE APRIL-JULY VOLUME RUNOFF OUTLOOK FROM THE COLORADO RIVER BASIN
REMAINED RELATIVELY FLAT BETWEEN MARCH AND APRIL. THE APRIL OUTLOOK
FOR APRIL-JULY STREAMFLOW RUNOFF VOLUME INTO LAKE POWELL STOOD AT
110 PERCENT OF NORMAL OR 7.85 MILLION ACRE-FEET. THE WARM AND DRY
WEATHER CONTINUES TO HURT THE OUTLOOK FOR THE VIRGIN RIVER OUT OF
SOUTHWEST UTAH WHERE THE APRIL-JULY STREAMFLOW RUNOFF VOLUME STANDS
AT LESS THAN 20 PERCENT OF NORMAL.

URBAN AREA DROUGHT IMPACTS

SOME LANDSCAPE VEGETATION, INCLUDING LOW WATER USAGE SPECIES SUCH AS
OLEANDERS, HAS BEGUN TO DRY OUT OR DIE IN THE LAS VEGAS VALLEY,
ESPECIALLY WHERE MINIMAL IRRIGATION TAKES PLACE.

CLIMATE SUMMARY...

VERY DRY AND WARM CONDITIONS HAVE UNFORTUNATELY BEEN THE NORM THIS
WINTER. THE LACK OF STORMS HAS PRODUCED ONE THE DRIEST WINTERS ON
RECORD IN CALIFORNIA WHERE SNOWPACK IS PATHETIC AND RESERVOIR
STORAGE DEPLETED. THERE DOES NOT APPEAR TO BE ANY RELIEVE IN DROUGHT
CONDITIONS AS WE HEAD INTO OUR DRIEST MONTHS.

ARIZONA             PCPN        NORMAL   PER

BEAVER DAM          1.98         4.82     41
PIPE SPRING NM      3.53         4.68     75
KINGMAN             1.43         5.02     28
WIKIEUP             1.80         6.44     28

CALIFORNIA

BISHOP              2.14         4.05     53
DEATH VALLEY NP     0.74         1.75     42
BARSTOW-DAGGETT     2.16         2.85     76
NEEDLES             1.03         3.21     32
JOSHUA TREE         1.64         3.51     47

NEVADA

LAS VEGAS           1.72         2.87     60
MT CHARLESTON       9.13        16.94     54
PAHRUMP             1.40         3.40     41
MESQUITE            2.05         5.26     39
CALIENTE            3.95         5.47     72
PIOCHE              3.19         7.85     41
DYER                1.88         2.70     70

PCPN   - OCTOBER 2013 - MARCH 2014
NORMAL - WATER YEAR NORMAL
PER    - PERCENT OF NORMAL

PRECIPITATION/TEMPERATURE OUTLOOK...

ANY IMPROVEMENT TO OUR CONDITIONS WILL BE DIFFICULT AS WE HEAD INTO
THE WARMER AND DRIER MONTHS. THE LATEST SEASONAL FORECAST (MAY
THROUGH JULY) FOR THE SOUTHERN GREAT BASIN AND MOJAVE
DESERT...ISSUED BY THE CLIMATE PREDICTION CENTER...THERE ARE NO
SIGNS WHICH POINT TO A GREATER PROBABILITY OF ABOVE OR BELOW NORMAL
PRECIPITATION FOR THE AREA SO THE AREA HAS BEEN GIVEN EQUAL CHANCES
OF EITHER ABOVE, BELOW OR NORMAL. JUST TO OUR EAST THE FOUR CORNERS
REGION HAS BEEN GIVEN A SLIGHTLY HIGHER PROBABILITY OF ABOVE NORMAL
PRECIPITATION. THERE IS A GOOD CHANCE OF ABOVE NORMAL TEMPERATURES
FOR THE PERIOD.

HYDROLOGIC SUMMARY AND OUTLOOK...

THE OFFICIAL APRIL OUTLOOK FOR APRIL-JULY STREAMFLOW RUNOFF VOLUME
INTO LAKE POWELL STANDS AT 110 PERCENT OF NORMAL OR 7.85 MILLION
ACRE-FEET. THE OFFICIAL APRIL WATER SUPPLY OUTLOOK FOR THE VIRGIN
RIVER AT LITTLEFIELD FOR APRIL-JULY VOLUME RUNOFF IS 17 PERCENT OR
ABOUT 11 KAF.

DATA FOR RESERVOIRS ACROSS THE REGION

RESERVOIR                      PERCENT FULL

LAKE MEAD                           44   AS OF 4/20/2014
LAKE MOHAVE                         93
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 15 2014. 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














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