Drought Information Statement
Issued by NWS Boise, ID

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IDC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-031-
033-035-037-039-041-043-045-047-049-051-053-055-057-059-061-063-
065-067-071-073-075-077-079-081-083-085-087-ORC001-025-045-190600-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOISE IDAHO
352 PM MST FRI DEC 18 2014

...LONG TERM DROUGHT REMAINS ACROSS PORTIONS OF IDAHO AND SOUTHEAST
OREGON...

SYNOPSIS...

ONLY MINOR CHANGE HAS OCCURRED TO THE DROUGHT STATUS ACROSS IDAHO
AND SOUTHEAST OREGON SINCE THE BEGINNING OF THE 2015 WATER YEAR.
WEATHER PATTERNS HAVE LED TO NORMAL OR ABOVE NORMAL PRECIPITATION
ACROSS MOST OF CENTRAL IDAHO...AND HARNEY COUNTY OREGON SINCE
OCTOBER 1. MEANWHILE...MOST OF SOUTHERN IDAHO...MUCH OF NORTHERN
IDAHO...AND BAKER AND MALHEUR COUNTIES IN OREGON HAVE RECEIVED BELOW
NORMAL PRECIPITATION. EARLY SEASON MOUNTAIN SNOWPACK IS NEAR AVERAGE
OR BELOW AVERAGE ACROSS THE AREA. HOWEVER...MUCH OF THE
PRECIPITATION HAS BEEN PRODUCED BY RELATIVELY WARM STORM SYSTEMS. AS
A RESULT...LOWER ELEVATION SNOWPACK IS LACKING FOR MUCH OF THE
REGION.

ACCORDING TO THE DECEMBER 16 U.S. DROUGHT MONITOR...IN SOUTHERN
IDAHO...MODERATE TO SEVERE DROUGHT (D1 AND D2 CLASSIFICATION) EXISTS
ACROSS MUCH OF THE UPPER SNAKE PLAIN (MAINLY NORTH OF THE SNAKE
RIVER)...THE WOOD RIVER AND LOST RIVER BASINS...ACROSS SOUTH CENTRAL
IDAHO AND OWYHEE COUNTY...EXTENDING NORTH ACROSS THE WEISER RIVER
BASIN AND WESTERN IDAHO COUNTY...AND INTO THE LOWER CLEARWATER
BASIN. EXTREME DROUGHT (D3 CLASSIFICATION) EXISTS ACROSS PART OF THE
MAGIC VALLEY IN SOUTH CENTRAL IDAHO...AND ACROSS A PORTION OF
WESTERN OWYHEE COUNTY AND FAR SOUTHWEST WASHINGTON COUNTY. IN
SOUTHEAST OREGON...EXTREME DROUGHT (D3 CLASSIFICATION) EXTENDS
ACROSS HARNEY AND MALHEUR COUNTIES AND SOUTHERN BAKER COUNTY...WITH
MODERATE DROUGHT (D2 CLASSIFICATION) ACROSS NORTHERN BAKER COUNTY.

DROUGHT SEVERITY CLASSIFICATION POSSIBLE IMPACTS...
(D1)MODERATE DROUGHT...
SOME DAMAGE TO CROPS. SHORT TERM DRYNESS SLOWING PLANTING AND GROWTH
OF CROPS AND PASTURES. SOME WATER SHORTAGES DEVELOPING OR IMMINENT.
VOLUNTARY WATER USE RESTRICTIONS REQUESTED.

(D2)SEVERE DROUGHT...
CROPS OR PASTURE LOSSES LIKELY. WATER SHORTAGES COMMON. WATER
RESTRICTIONS IMPOSED.

(D3)EXTREME DROUGHT...
MAJOR CROP OR PASTURE LOSSES. WIDESPREAD WATER SHORTAGES OR
RESTRICTIONS.

(D4)EXCEPTIONAL DROUGHT...
EXCEPTIONAL AND WIDESPREAD CROP OR PASTURE LOSSES. SHORTAGES OF
WATER IN RESERVOIRS...STREAMS AND WELLS CREATING WATER EMERGENCIES.

THE SEASONAL DROUGHT OUTLOOK THROUGH MARCH 31 2015 INDICATES DROUGHT
WILL CONTINUE FOR AREAS THAT ARE ALREADY EXPERIENCING DROUGHT...AND
SOME EXPANSION OF DROUGHT CONDITIONS IS LIKELY IN NORTHERN IDAHO.

SUMMARY OF REPORTED IMPACTS...

LONG TERM DROUGHT LED TO SPARSE IRRIGATION WATER ACROSS PORTIONS OF
SOUTHERN IDAHO AND SOUTHEAST OREGON. THE LACK OF WATER IN MALHEUR
COUNTY OREGON RESULTED IN FARMERS LEAVING SOME GROUND IDLE THIS PAST
GROWING SEASON. SOME FARMERS INTERRUPTED CROP ROTATIONS BY SWITCHING
TO CROPS THAT USE LESS WATER. FARMERS THAT RELY ON OWYHEE RESERVOIR
FOR THEIR WATER WERE THE HARDEST HIT.

LONG TERM DROUGHT AND MODERATE WINTERS HAVE INCREASED INSECT
OUTBREAKS AND TREE MORTALITY IN SOME FORESTED AREAS...LEAVING LARGE
AMOUNTS OF DEAD FUEL.

IN SOUTHERN IDAHO MANY SMALLER RESERVOIR SYSTEMS ARE STARTING OFF THE
2015 WATER YEAR WITH WELL BELOW NORMAL STORAGE. THIS INCLUDES LITTLE
WOOD...SALMON FALLS...AND MAGIC RESERVOIRS. IN SOUTHEAST OREGON...
RESERVOIRS HAVE LITTLE OR NO CARRYOVER STORAGE FOR THE NEW WATER YEAR.
OWYHEE RESERVOIR WAS DOWN TO NEAR THE INACTIVE STORAGE POOL FOR THE
SECOND YEAR IN A ROW.

AS OF DECEMBER 17...THE U.S. DEPARTMENT OF AGRICULTURE FARM SERVICE
AGENCY PRIMARY DROUGHT DISASTER COUNTIES IN IDAHO INCLUDE BINGHAM...
ADAMS...BLAINE...BONNEVILLE...BUTTE...CAMAS...CANYON...CASSIA...CLARK
...CUSTER...ELMORE...FREMONT...GOODING...JEFFERSON...JEROME...LEMHI
...LINCOLN...MADISON...MINIDOKA...OWYHEE...PAYETTE...POWER...TWIN
FALLS AND WASHINGTON. SOUTHEAST OREGON COUNTIES INCLUDE BAKER...
HARNEY AND MALHEUR. ANY COUNTY DECLARED A PRIMARY OR CONTIGUOUS
DISASTER COUNTY MAKES PRODUCERS IN THAT COUNTY ELIGIBLE FOR CERTAIN
EMERGENCY AID. SEE THE U.S. DEPARTMENT OF AGRICULTURE WEB SITE IN
THE RELATED WEB SITES SECTION BELOW FOR DETAILS.

CLIMATE SUMMARY...

BELOW IS A LIST OF PRECIPITATION DATA FOR SELECTED LOCATIONS IN
IDAHO AND SOUTHEAST OREGON FOR THE 2015 WATER YEAR.

       OCT 1 2014-DEC 17 2014      NORMAL     DEPARTURE    LAST
        TOTAL PRECIP(INCHES)       VALUE     FROM NORMAL   YEAR

BOISE            3.61               2.94        0.67       2.64
MCCALL           6.50               5.12        1.38       3.15
TWIN FALLS       1.64               2.68       -1.04       0.41
POCATELLO        1.94               2.69       -0.75       1.27
IDAHO FALLS      0.77               2.20       -1.43       1.24
CHALLIS          1.36               1.61       -0.25       0.63
STANLEY          5.35               4.24        1.11       3.27
LEWISTON         3.18               2.66        0.52       1.15
BAKER CITY, OR   1.21               2.06       -0.85       0.64
BURNS, OR        3.05               2.79        0.26       0.93
ROME, OR         1.51               1.83       -0.32       0.14

FOR THE 30 DAY PERIOD FROM NOVEMBER 18 TO DECEMBER 17...AVERAGE
TEMPERATURES WERE ABOVE NORMAL THROUGHOUT THE REGION. IN FACT...
VERAGE TEMPERATURES WERE 6 TO 10 DEGREES ABOVE NORMAL ACROSS MUCH OF
SOUTHERN IDAHO AND SOUTHEAST OREGON.

PRECIPITATION AND TEMPERATURE OUTLOOK...

THE OUTLOOK FOR JANUARY FAVORS ABOVE NORMAL TEMPERATURES ACROSS THE
REGION. THE PRECIPITATION OUTLOOK FOR JANUARY FAVORS ABOVE NORMAL
PRECIPITATION FOR CENTRAL AND NORTHERN IDAHO...AND EQUAL CHANCES OF
EITHER ABOVE NORMAL...NORMAL...OR BELOW NORMAL PRECIPITATION.

THE THREE MONTH OUTLOOK FOR FEBRUARY THROUGH APRIL FAVORS ABOVE
NORMAL TEMPERATURES. MEANWHILE...PROBABILITIES FAVOR BELOW NORMAL
PRECIPITATION FOR CENTRAL AND NORTHERN IDAHO...AND EQUAL CHANCES OF
EITHER ABOVE NORMAL...NORMAL...OR BELOW NORMAL PRECIPITATION
ELSEWHERE.

HYDROLOGIC SUMMARY...

OVER THE 30 DAY PERIOD FROM NOVEMBER 18 THROUGH DECEMBER 17...
PRECIPITATION WAS GENERALLY NORMAL TO ABOVE NORMAL ACROSS CENTRAL
IDAHO AND SOUTHERN HARNEY COUNTY IN OREGON. BELOW NORMAL
PRECIPITATION PREVAILED ELSEWHERE.

AS OF DECEMBER 17...NRCS SNOTEL DATA INDICATED AROUND 110 PERCENT OF
NORMAL SNOWPACK ACROSS THE SNAKE RIVER HEADWATERS IN WESTERN
WYOMING. MOST EASTERN AND CENTRAL IDAHO BASINS WERE 75 TO 95 PERCENT
OF NORMAL. SOUTHSIDE SNAKE RIVER BASINS...THE WEISER BASIN...THE
IDAHO PANHANDLE...AND SOUTHEAST OREGON BASINS WERE AT 50 TO 70
PERCENT OF NORMAL SNOWPACK. MUCH OF THE PRECIPITATION HAS BEEN
PRODUCED BY RELATIVELY WARM STORM SYSTEMS. AS A RESULT...LOWER
ELEVATIONS SNOWPACK IS LACKING FOR MUCH OF THE REGION.

AS OF DECEMBER 17...28 DAY AVERAGE STREAMFLOWS AT MANY USGS GAGING
STATIONS ACROSS SOUTHERN IDAHO AND SOUTHEAST OREGON WERE BELOW OR
MUCH BELOW NORMAL...PARTICULARLY ON THE SNAKE RIVER. STREAMFLOWS
ELSEWHERE ACROSS IDAHO WERE GENERALLY NORMAL TO ABOVE NORMAL.

DECEMBER 1 2014 RESERVOIR DATA

                 PERCENT OF CAPACITY     PERCENT OF AVG
IDAHO
AMERICAN FALLS           44                      97
ANDERSON RANCH           55                      93
ARROWROCK                48                     116
BEAR LAKE                41                      91
BLACKFOOT                45                      91
BROWNLEE                128                     141
CASCADE                  61                      94
COEUR D ALENE            52                      92
DEADWOOD                 64                     125
DWORSHAK                 66                      93
HENRYS LAKE              96                     111
ISLAND PARK              68                     109
LAKE LOWELL              55                     103
LITTLE WOOD              23                      62
LUCKY PEAK               32                     103
MACKAY                   41                     112
MAGIC                    14                      46
MANN CREEK                3                      20
MONTPELIER               58                     143
OAKLEY                   17                      68
PALISADES                64                     107
PEND OREILLE             34                      79
PRIEST LAKE              45                      90
RIRIE                    52                     122
SALMON FALLS              7                      33

EASTERN OREGON
OWYHEE                    4                      11
WARM SPRINGS              3                      10
BEULAH                   13                      49
BULLY CREEK               4                      12
UNITY                    16                      56
PHILLIPS                 15                      39
THIEF VALLEY             21                      40

NEXT ISSUANCE DATE...

UPDATES TO THIS PRODUCT WILL BE MADE ON A MONTHLY BASIS. THE NEXT
ISSUANCE OF THE DROUGHT INFORMATION STATEMENT WILL OCCUR IN MID
JANUARY.

RELATED WEB SITES...

U.S. DROUGHT PORTAL:
HTTP://WWW.DROUGHT.GOV

NATIONAL DROUGHT MITIGATION CENTER:
HTTP://DROUGHT.UNL.EDU

STREAM FLOWS:
AHPS HTTP://WATER.WEATHER.GOV/AHPS
USGS HTTP://WATERWATCH.USGS.GOV

NWS WATER SUPPLY FORECASTS:
HTTP://WWW.NWRFC.NOAA.GOV
HTTP://WWW.CBRFC.NOAA.GOV

NRCS WATER SUPPLY FORECASTS:
HTTP://WWW.WCC.NRCS.USDA.GOV/WSF/WSF.HTML

IDAHO DEPARTMENT OF WATER RESOURCES:
HTTP://WWW.IDWR.IDAHO.GOV

OREGON WATER RESOURCES DEPARTMENT (DROUGHT INFORMATION):
HTTP://WWW.OREGON.GOV/OWRD/PAGES/WR/DROUGHT.ASPX

LONG TERM WEATHER AND CLIMATE OUTLOOKS:
HTTP://WWW.CPC.NCEP.NOAA.GOV

WESTERN REGION CLIMATE CENTER (CLIMATE ANOMALY MAPS):
HTTP://WWW.WRCC.DRI.EDU/MONITORING-MAPS/

NATIONAL INTERAGENCY COORDINATION CENTER
(FIRE DANGER AND OUTLOOKS):  HTTP://WWW.NIFC.GOV/NICC

RESERVOIR INFORMATION:
NRCS
HTTP://WWW.WCC.NRCS.USDA.GOV/WSF/WSF-RESERVOIR.HTML
BUREAU OF RECLAMATION
HTTP://WWW.USBR.GOV/PN/HYDROMET/SELECT.HTML

UNITED STATES DEPARTMENT OF AGRICULTURE:
DISASTER ASSISTANCE
HTTP://WWW.USDA.GOV/WPS/PORTAL/USDA/USDAHOME

ACKNOWLEDGEMENTS...
THE DROUGHT MONITOR IS A MULTI-AGENCY EFFORT INVOLVING NOAA/S
NATIONAL WEATHER SERVICE AND NATIONAL CLIMATIC DATA CENTER...THE
US DEPARTMENT OF AGRICULTURE...STATE AND REGIONAL CENTERS...
CLIMATOLOGISTS...AND THE NATIONAL DROUGHT MITIGATION CENTER.
INFORMATION FOR THIS STATEMENT HAS BEEN GATHERED FROM THE NWS AND
FFA OBSERVATION SITES...STATE AGENCIES...USDA...NRCS...USACE AND
USGS.

QUESTIONS OR COMMENTS...
IF YOU HAVE QUESTIONS OR COMMENTS ABOUT THIS DROUGHT INFORMATION
STATEMENT PLEASE CONTACT...

NATIONAL WEATHER SERVICE
3833 SOUTH DEVELOPMENT AVENUE
BOISE ID 83705-5354
PHONE: 208-334-9860
EMAIL: W-BOI.WEBMASTER@NOAA.GOV

$$


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