Weather Service Report


182 
AXUS76 KHNX 172055
DGTHNX
CAC019-029-031-039-043-047-107-192100-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
155 PM PDT THU APR 17 2014


...EXCEPTIONAL DROUGHT CONDITIONS ACROSS MOST OF THE WFO HANFORD 
WARNING/FORECAST AREA WITH EXTREME DROUGHT CONDITIONS ELSEWHERE...

SYNOPSIS...

ON JANUARY 17TH...GOVERNOR BROWN DECLARED A DROUGHT EMERGENCY FOR 
THE STATE OF CALIFORNIA. THE LATEST DROUGHT MONITOR /APRIL 15TH 
2014/ NOW DEPICTS ALL OF THE WFO HANFORD COUNTY WARNING/FORECAST 
AREA...EXCEPT YOSEMITE NATIONAL PARK AND THE KERN COUNTY DESERTS... 
UNDER EXCEPTIONAL DROUGHT CONDITIONS /CATEGORY D4/...WHILE YOSEMITE 
NATIONAL PARK AND THE KERN COUNTY DESERTS REMAIN UNDER EXTREME 
DROUGHT CONDITIONS /CATEGORY D3/.

DESPITE A SERIES OF WEAK STORMS THAT MOVED THROUGH CENTRAL
CALIFORNIA THROUGH THE FIRST DAYS OF APRIL...MONTHLY AND SEASONAL
RAINFALL AMOUNTS REMAIN WELL BELOW NORMAL...ESPECIALLY FOR THE
SOUTH END OF THE SAN JOAQUIN VALLEY WHICH HAS BEEN HEAVILY RAIN
SHADOWED FOR MUCH OF THE RAIN SEASON.

THE MEDIUM-RANGE MODELS SUGGEST A WEAK STORM WILL BRUSH THE 
SOUTHERN SIERRA NEVADA ON APRIL 18TH-19TH...FOLLOWED BY A STRONGER
STORM THAT WILL IMPACT THE WFO HANFORD COUNTY WARNING/FORECAST AREA 
BEGINNING AROUND APRIL 22ND...ALTHOUGH THERE WERE DIFFERENCES 
BETWEEN THE GFS AND ECMWF AS TO STORM TIMING... TRACK AND STRENGTH. 
EVEN IS THE STORM WERE TO BRING MODERATE PRECIPITATION TO CENTRAL 
CALIFORNIA...IT WOULD NOT BRING ENOUGH PRECIPITATION TO PROVIDE ANY 
NOTABLE DROUGHT RELIEF...RATHER A PAUSING OF WORSENING CONDITIONS. 
THE 8 TO 14 DAY PRECIPITATION OUTLOOK ISSUED APRIL 16TH HAS EQUAL 
CHANCES OF ABOVE-...NEAR- OR BELOW-NORMAL RAINFALL FOR THE REGION.

SUMMARY OF IMPACTS...

THE NATIONAL ADVOCACY GROUP AMERICAN RIVERS HAS NAMED THE SAN 
JOAQUIN RIVER AS THE MOST ENDANGERED WATERWAY IN THE NATION...IN 
PART DUE TO THE DROUGHT. ON APRIL 17TH...THE CITY OF VISALIA 
INSTITUTED RESTRICTIONS ON LAWN WATERING. WATER ISSUES...INCLUDING
GROUNDWATER MANAGEMENT HAVE BECOME A FACTOR IN THE COMING ELECTIONS.

ON APRIL 2ND...THE FRESNO YACHT CLUB CANCELLED THE HIGH SIERRA 
REGATTA SCHEDULED FOR JULY DUE TO LOW WATER LEVELS AT HUNTINGTON 
LAKE. THIS WAS THE FIRST CANCELLATION IN THE 60 YEARS OF THE REGATTA.

THERE CONTINUES TO BE SIGNIFICANT MEDIA COVERAGE ON THE ON-GOING 
DROUGHT CONDITIONS. THESE REPORTS INCLUDE DISCUSSION OF SIGNIFICANT 
RE-ALLOCATION OF WATER RESOURCES FROM THE EAST TO WEST SIDE OF THE 
SAN JOAQUIN VALLEY...FARMERS FORGOING PLANTING OF SOME CROPS...A 
DECREASE IN THE SNOW-RELATED TOURISM ACTIVITY IN THE SOUTHERN 
SIERRA NEVADA...REDUCTION IN AIR QUALITY DUE TO PERSISTENT STAGNANT 
AIR...AND LOSS OR REDUCTION OF GROUND WATER.

CLIMATE SUMMARY...

THE SIERRA NEVADA SNOW SURVEY ON APRIL 1ST REPORTED THE SNOW-WATER 
EQUIVALENT FOR THE CENTRAL SIERRA NEVADA WAS 11.4 INCHES...OR 38 
PERCENT OF THE NORMAL OF 30 INCHES. THE SNOW-WATER EQUIVALENT FOR 
THE SOUTHERN SIERRA NEVADA WAS 8.2 INCHES...OR 31 PERCENT OF THE 
NORMAL OF 26.45 INCHES.

FOR THE WATER YEAR /SINCE JULY 1ST 2013/ THROUGH APRIL 16TH... 
FRESNO HAS RECEIVED 4.15 INCHES OF RAIN OR 39.6 PERCENT OF THE 
NORMAL OF 10.48 INCHES. BAKERSFIELD RECEIVED 2.01 INCH OR 33.4 
PERCENT OF THE NORMAL OF 6.02 INCHES.

FOR THE FIRST 100 DAYS OF 2014 /JANUARY 1ST THROUGH APRIL 10TH/... 
BOTH BAKERSFIELD AND FRESNO HAVE HAD THEIR WARMEST FIRST 100 DAYS ON 
RECORD...WITH AN AVERAGE TEMPERATURE OF 58.4 DEGREES FOR BAKERSFIELD 
AND 58.1 DEGREES FOR FRESNO. BAKERSFIELD HAD ITS THIRD DRIEST FIRST 
100 DAYS ON RECORD WITH 0.94 INCH OF RAIN. ONLY 1972 /0.27 INCH/ AND 
1961 /0.89 INCH/ WERE DRIER FOR THE FIRST 100 DAYS.

PRECIPITATION/TEMPERATURE OUTLOOK...

THE FORECAST FOR THE NEXT SEVEN DAYS FOR THE WFO HANFORD COUNTY 
WARNING/FORECAST AREA CALLS FOR A WEAK STORM TO BRUSH THE SOUTHERN 
SIERRA NEVADA APRIL 18TH AND 19TH WITH LIGHT PRECIPITATION AND A 
SLIGHT CHANCE OF THUNDERSTORMS. A STRONGER STORM IS FORECAST TO MOVE 
THROUGH THE REGION BEGINNING AROUND APRIL 22ND...ALTHOUGH THERE IS 
SOME UNCERTAINTY AT THIS TIME AS TO THE EXPECTED IMPACTS.

THE NOAA CLIMATE PREDICTION CENTER 6-10 DAY OUTLOOK ISSUED APR1L 17TH
FAVORS NEAR- OR BELOW-NORMAL TEMPERATURES ACROSS CENTRAL 
CALIFORNIA...WITH EQUAL CHANCES OF ABOVE-...NEAR-...OR BELOW-NORMAL 
PRECIPITATION.

THE LATEST 8-14 DAY OUTLOOK HAS EQUAL CHANCES OF ABOVE-...NEAR- OR 
BELOW-NORMAL TEMPERATURES...BUT FAVORS ABOVE-NORMAL PRECIPITATION.

THE CLIMATE PREDICTION OUTLOOK FOR THE NEXT 30 DAYS...BASED ON DATA 
FROM THE CURRENT STATE OF THE OCEANS AND ATMOSPHERE ALONG WITH 
CLIMATE MODELS...FROM THE NOAA CLIMATE PREDICTION CENTER/S INDICATES 
THE ODDS ARE FAVORING ABOVE-NORMAL TEMPERATURES FOR THE WFO HANFORD 
COUNTY WARNING/FORECAST AREA...WITH EQUAL CHANCES FOR ABOVE-...NEAR- 
OR BELOW NORMAL PRECIPITATION.

FOR THE THREE-MONTH PERIOD MAY-JUNE-JULY...THE ODDS FAVOR ABOVE- 
NORMAL TEMPERATURES FOR THE WFO HANFORD COUNTY WARNING/FORECAST 
AREA WITH EQUAL CHANCES OF ABOVE-...NEAR-...OR BELOW-NORMAL 
PRECIPITATION. GRAPHICS FOR THESE OUTLOOKS CAN BE FOUND ONLINE 
/SEE LINKS BELOW/.

HYDROLOGIC SUMMARY AND OUTLOOK...

WITH NO ADDITIONAL SIGNIFICANT WIDESPREAD PRECIPITATION EXPECTED 
OVER THE AREA FOR THE NEXT SEVERAL DAYS...NO INCREASES IN AREA 
RIVERS AND RESERVOIRS WATER LEVELS ARE EXPECTED. THE CURRENT DROUGHT 
OUTLOOK FROM THE NOAA CLIMATE PREDICTION CENTER INDICATES CURRENT 
DROUGHT LEVELS ARE LIKELY TO PERSIST THROUGH THE NEXT THREE MONTHS.

NEXT ISSUANCE DATE...

15 MAY 2014...OR EARLIER IF CONDITIONS CHANGE.

&&

RELATED WEBSITES...
CALIFORNIA DATA EXCHANGE CENTER: HTTP://CDEC.WATER.CA.GOV/
CALIFORNIA NEVADA RIVER FORECAST CENTER:
HTTP://WWW.CNRFC.NOAA.GOV/
DROUGHT MONITOR: HTTP://DROUGHT.UNL.EDU/DM/MONITOR.HTML
CALIFORNIA DROUGHT PAGE:
HTTP://WATERSUPPLYCONDITIONS.WATER.CA.GOV/
CLIMATE PREDICTION CENTER: HTTP://WWW.CPC.NOAA.GOV/INDEX.PHP
NATIONAL WEATHER SERVICE HANFORD: HTTP://WWW.WRH.NOAA.GOV/HNX/

ACKNOWLEDGMENTS...

CLIMATE PREDICTION CENTER
DROUGHT MONITOR
CALIFORNIA NEVADA RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD
CALIFORNIA DEPARTMENT OF WATER RESOURCES
CALIFORNIA STATE CLIMATOLOGIST
U.S. BUREAU OF RECLAMATION
CAL FIRE

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

$$

SANGER

WEATHER.GOV/HANFORD



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