Drought Information Statement
Issued by NWS San Diego, CA

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AXUS76 KSGX 162316
DGTSGX
CAC059-065-071-073-312359-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
415 PM PDT THU JULY 16 2015

...THE STATE WATER RESOURCES CONTROL BOARD HAS IMPLEMENTED EMERGENCY
REGULATION REQUIRING AN IMMEDIATE TWENTY-FIVE PERCENT REDUCTION IN
OVERALL POTABLE URBAN WATER USE STATEWIDE...

...SAN DIEGO...ORANGE...SAN BERNARDINO...AND RIVERSIDE COUNTIES
INCLUDED IN USDA PRIMARY NATURAL DISASTER AREAS DUE TO LOSSES FROM
DROUGHT...

...EXTREME TO LOCALLY EXCEPTIONAL 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...

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.

NOW THAT GRASSES AND OTHER ANNUAL GROUND COVER HAS CURED AT LOWER
ELEVATIONS...THE WILDFIRE THREAT HAS INCREASED ACROSS WILDLANDS.
RECENT WILDFIRES IN THE PRADO BASIN AND AT HIGH ELEVATIONS IN THE
MOUNTAINS SUGGEST THE FIRE SEASON IS AHEAD OF NORMAL.

OTHER IMPACTS...

THE LACK OF RAINFALL AND RUNOFF THIS WINTER HAS LOWERED THE FLOW IN
AREA RIVERS...RESULTING IN STRESSES ON INDIGENOUS VEGETATION AND
WILDLIFE.

WATER LEVELS IN WELLS FED BY RAINFALL AND LOCAL RUNOFF ARE DROPPING
ACROSS THE REGION. IN THE FALL 2014 REPORT FROM THE WESTERN
MUNICIPAL WATER DISTRICT...A SAMPLING OF OVER 1400 WELLS WITH STATIC
LEVELS HAD AN AVERAGE DECLINE OF 4.27 FEET. IN ADDITION...NUMEROUS
WELLS SHOWED DROPS OF 20 FEET OR MORE. 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.


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...

                       JUNE 2015              SINCE OCTOBER 1 2014

                 REPORTED   % OF NORMAL      REPORTED    % OF NORMAL

NEWPORT BEACH     0.00         0%              4.58         44%
TUSTIN            1.42         0%              8.31         59%

IDYLLWILD         0.16       100%             16.31         68%
RIVERSIDE         TRACE        0%              5.75         48%
PALM SPRINGS      TRACE        0%              2.21         46%

BIG BEAR LAKE     0.88       587%             13.72         76%
REDLANDS          0.00         0%              7.59         59%
EL MIRAGE         0.00         0%              2.67         56%

BORREGO SPRINGS   0.00         0%              2.30         45%
CAMPO             0.69       627%             11.56         80%
LAKE CUYAMACA     0.05        25%             18.43         59%
LINDBERGH FIELD   0.04        57%              8.95         88%


PRECIPITATION/TEMPERATURE OUTLOOK...

EL NINO CONDITIONS HAVE DEVELOPED OVER THE EQUATORIAL PACIFIC AND
ARE FORECAST TO STRENGTHEN INTO THE FALL.

THE LATEST 30 DAY OUTLOOK FROM NOAAS NATIONAL WEATHER SERVICE
CLIMATE PREDICTION CENTER SLIGHTLY FAVORS ABOVE NORMAL TEMPERATURES
AND PRECIPITATION OVER SOUTHERN CALIFORNIA THROUGH AUGUST. THE 90-
DAY OUTLOOK THROUGH OCTOBER...STRONGLY FAVORS ABOVE NORMAL
TEMPERATURES...AND SLIGHTLY FAVORS ABOVE NORMAL PRECIPITATION.

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 CALLS FOR DROUGHT
CONDITIONS ACROSS THE REGION TO PERSIST OR INTENSIFY THROUGH
OCTOBER.

NEXT SCHEDULED ISSUANCE DATE...
THE NEXT SCHEDULED DROUGHT INFORMATION STATEMENT UPDATE WILL BE
ISSUED ON OR ABOUT AUGUST 17TH.

&&

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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