Drought Information Statement
Issued by NWS San Diego, CA

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AXUS76 KSGX 150441
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DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
945 PM PDT SAT MAY 14 2016

...SAN DIEGO...ORANGE...SAN BERNARDINO...AND RIVERSIDE COUNTIES
HAVE BEEN DESIGNATED PRIMARY NATURAL DISASTER AREAS DUE TO THE
DROUGHT...

...THE STATE WATER RESOURCES CONTROL BOARD HAS EXTENDED EMERGENCY
REGULATION REQUIRING A TWENTY-FIVE PERCENT REDUCTION IN OVERALL
POTABLE URBAN WATER USE STATEWIDE THROUGH OCTOBER...

...EXTREME TO LOCALLY EXCEPTIONAL LONG-TERM DROUGHT CONDITIONS
CONTINUE OVER PORTIONS OF SOUTHWESTERN CALIFORNIA...

SYNOPSIS...

PORTIONS OF SOUTHWESTERN CALIFORNIA HAVE EXPERIENCED FOUR BELOW
AVERAGE RAINFALL SEASONS. THIS HAS RESULTED IN A SIGNIFICANT
REDUCTION IN RESERVOIR AND GROUNDWATER LEVELS. THESE CONDITIONS HAVE
PROMPTED AN EXTREME DROUGHT DEPICTION ON THE U.S. DROUGHT MONITOR
MAPS WITHIN ORANGE COUNTY...FAR WESTERN SAN BERNARDINO COUNTY...
RIVERSIDE COUNTY WEST OF THE MOUNTAINS...AND SAN DIEGO COUNTY WEST
OF THE DESERTS. MUCH OF ORANGE COUNTY HAS BEEN INCLUDED IN THE
EXCEPTIONAL DROUGHT CATEGORY THAT COVERS THE CENTRAL COAST OF
CALIFORNIA. PORTIONS OF THE HIGH DESERT EAST OF THE APPLE VALLEY...
THE COACHELLA VALLEY... AND MUCH OF THE SAN DIEGO COUNTY DESERTS
REMAIN IN THE SEVERE DROUGHT CATEGORY. THE U.S. DROUGHT MONITOR
CLASSIFIES DROUGHT INTO FIVE CATEGORIES OF INCREASING SEVERITY:
ABNORMALLY DRY (D0)...MODERATE DROUGHT (D1)...SEVERE DROUGHT
(D2)...EXTREME DROUGHT (D3)...AND EXCEPTIONAL DROUGHT (D4).

PLEASE NOTE THAT NEITHER NOAA OR THE NWS DECLARES DROUGHTS. DROUGHTS
IN THE STATE OF CALIFORNIA ARE DECLARED BY THE GOVERNOR THROUGH THE
RECOMMENDATION OF THE CALIFORNIA STATE DEPARTMENT OF WATER RESOURCES
AND THE STATE CLIMATOLOGIST. HOWEVER...LOCAL OFFICIALS CAN DECLARE
LOCAL DROUGHT OR WATER EMERGENCIES AT TIMES WHEN THE STATE OF
CALIFORNIA HAS NOT DECLARED AN OFFICIAL DROUGHT. LOCAL WATER
PURVEYORS CAN ALSO IMPLEMENT VOLUNTARY OR MANDATORY RESTRICTIONS ON
WATER USAGE IN RESPONSE TO CURRENT OR FORECAST WATER SUPPLY
CONDITIONS REGARDLESS OF DROUGHT DECLARATIONS. THIS DROUGHT
STATEMENT PROVIDES A SUMMARY OF PERTINENT INFORMATION TO ENHANCE
PUBLIC AWARENESS OF DROUGHT OR ABNORMALLY DRY CONDITIONS.

SUMMARY OF IMPACTS...

THE SECRETARIAL DISASTER DESIGNATION MAKES FARM OPERATORS ELIGIBLE TO
BE CONSIDERED FOR CERTAIN ASSISTANCE FROM THE FARM SERVICE AGENCY.

SURFACE STORAGE INCREASES...GROUNDWATER RESERVES ESTABLISHED OVER
THE PAST FEW YEARS...AND THE AVAILABILITY OF IMPORTED WATER...ARE
HELPING MUCH OF SOUTHERN CALIFORNIA COPE WITH THE SHORTAGE.
HOWEVER...MOST DISTRICTS HAVE NOW IMPLEMENTED STAGE/LEVEL-ONE...
TWO...OR THREE MANDATORY OUTDOOR WATER USE RESTRICTIONS.

THE STATE WATER RESOURCES CONTROL BOARD APPROVED EMERGENCY
REGULATION TO ENSURE WATER AGENCIES AND THEIR CUSTOMERS INCREASE
WATER CONSERVATION IN URBAN SETTINGS OR FACE FINES OR OTHER
ENFORCEMENT. THE REGULATION IS INTENDED TO REDUCE OUTDOOR URBAN
WATER USE.

OTHER IMPACTS...

THE LACK OF RAINFALL AND RUNOFF HAS LOWERED THE FLOW IN AREA
RIVERS...RESULTING IN STRESSES ON INDIGENOUS VEGETATION AND
WILDLIFE. VERY LOW WATER LEVELS AFTER FOUR YEARS OF DROUGHT...HAVE
RESULTED IN POOR WATER QUALITY WITH HIGH BACTERIAL AND LOW OXYGEN
CONTENT IN SAN DIEGO COUNTY. THE LOW FLOWS HAVE MADE THE RIVER
BOTTOMS MORE PRONE TO WILDFIRE AS WELL.

WATER LEVELS IN WELLS FED BY RAINFALL AND LOCAL RUNOFF ARE WELL
BELOW AVERAGE IN MANY AREAS...INCLUDING THE BUNKER HILL AQUIFER
BELOW THE SAN BERNARDINO MOUNTAINS. MANY WELLS ACROSS THE REGION MAY
BE GOING DRY OR HAVE ALREADY DRIED UP. SALT WATER INTRUSIONS HAVE
BEEN REPORTED IN WELLS NEAR SEAL BEACH IN ORANGE COUNTY.

SEVERAL AREA RESERVOIRS ARE VERY LOW WHERE PURVEYORS HAVE NOT
AUGMENTED LEVELS WITH IMPORTED WATER...INCLUDING BARRET...
SOUTHERLAND...AND EL CAPITAN IN SAN DIEGO COUNTY. DIAMOND VALLEY
LAKE IN RIVERSIDE COUNTY REACHED A RECORD LOW IN MARCH.

CLIMATE SUMMARY...

ORANGE COUNTY HAS BEEN ONE OF THE DRIEST AREAS IN OUR REGION OVER
THE PAST FEW YEARS...WHILE RAINS HAVE BEEN MORE GENEROUS FARTHER
SOUTH IN SAN DIEGO COUNTY...AND NORTHEAST ACROSS SAN BERNARDINO
COUNTY WHERE DROUGHT CONDITIONS ARE NOT AS SEVERE. IN GENERAL...
THERE IS A TWO YEAR PRECIPITATION DEFICIT SINCE JANUARY 2011 ACROSS
EXTREME SOUTHWEST CALIFORNIA.


...MONTHLY AND SEASONAL PRECIPITATION SUMMARY FOR SELECTED CITIES...

                       APRIL 2016            SINCE OCTOBER 1 2015

                 REPORTED   % OF NORMAL      REPORTED    % OF NORMAL

NEWPORT BEACH     0.21        29%              3.84         38%
TUSTIN            0.10        11%              6.20         46%

IDYLLWILD         1.48        82%             20.35         87%
RIVERSIDE         0.49        61%              5.27         50%
PALM SPRINGS      0.14       127%              2.61         57%

BIG BEAR LAKE     0.96       102%             14.05         80%
REDLANDS          1.11       114%              7.53         61%
VICTORVILLE       0.62       172%              3.00         63%

BORREGO SPRINGS   0.03        18%              2.73         54%
CAMPO             1.90       198%             12.23         87%
LAKE CUYAMACA     1.97        74%             19.74         65%
LINDBERGH FIELD   0.55        71%              7.33         74%


PRECIPITATION/TEMPERATURE OUTLOOK...

STRONG EL NINO CONDITIONS HAVE PEAKED OVER THE EQUATORIAL PACIFIC
AND ARE RAPIDLY WEAKENING. ENSO NEUTRAL CONDITIONS ARE EXPECTED
BY LATE SPRING OR EARLY SUMMER.

THE LATEST 30 DAY OUTLOOK THROUGH MAY FROM NOAAS NATIONAL WEATHER
SERVICE CLIMATE PREDICTION CENTER INDICATES NEAR NORMAL TEMPERATURES
AND ABOVE AVERAGE PRECIPITATION. THE THREE MONTH OUTLOOK THROUGH
JULY CALLS FOR ABOVE NORMAL TEMPERATURES AND NEAR NORMAL RAINFALL.

HYDROLOGIC SUMMARY AND OUTLOOK...NO SUSTAINED LARGER FLOWS CAN BE
EXPECTED IN THE RIVERS AND RESERVOIRS UNTIL THE NEXT BIG RAINFALL
EVENT...OR A PROLONGED STORMY PERIOD DEVELOPS ACROSS SOUTHERN
CALIFORNIA.

THE LATEST U.S. SEASONAL DROUGHT OUTLOOK THROUGH JUNE CALLS FOR
DROUGHT CONDITIONS ACROSS THE REGION TO PERSIST.

NEXT SCHEDULED ISSUANCE DATE... THE NEXT SCHEDULED DROUGHT
INFORMATION STATEMENT UPDATE WILL BE ISSUED ON OR ABOUT JUNE 5TH.

&&

RELATED WEBSITES...

FOR ADDITIONAL INFORMATION ON THE USDA DISASTER DECLARATION SEE:
HTTP://DISASTER.FSA.USDA.GOV
GOVERNORS EMERGENCY PROCLAMATION: WWW.GOV.CA.GOV/NEWS.PHP?ID18368.
CAL OES DROUGHT PAGE: WWW.CALOES.CA.GOV/NEWSANDMEDIA/PAGES/CURRENT%
20NEWS%20AND%20EVENTS/DROUGHT.ASPX
CALIFORNIA DATA EXCHANGE CENTER: CDEC.WATER.CA.GOV/
CALIFORNIA NEVADA RIVER FORECAST CENTER: WWW.CNRFC.NOAA.GOV/
DROUGHT MONITOR: DROUGHTMONITOR.UNL.EDU
U.S. DROUGHT PORTAL: HTTP://WWW.DROUGHT.GOV/DROUGHT/
CALIFORNIA DROUGHT PAGE: WATERSUPPLYCONDITIONS.WATER.CA.GOV/
CLIMATE PREDICTION CENTER: WWW.CPC.NCEP.NOAA.GOV
NATIONAL WEATHER SERVICE SAN DIEGO: WWW.WRH.NOAA.GOV/SGX/

ACKNOWLEDGMENTS...
CLIMATE PREDICTION CENTER
DROUGHT MONITOR
NATIONAL INTEGRATED DROUGHT INFORMATION SYSTEM
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD
CALIFORNIA DEPARTMENT OF WATER RESOURCES
CALIFORNIA STATE CLIMATOLOGIST
US ARMY CORPS OF ENGINEERS SOUTHERN DISTRICT

QUESTIONS AND COMMENTS...PLEASE REFER ALL QUESTIONS TO
W-SGX.WEBMASTER@NOAA.GOV.

&&

JAD



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