Drought Information Statement
Issued by NWS Boise, ID

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000
AXUS75 KBOI 202059
DGTBOI

AXUS75 KBOI DDHHMM
DGTBOI
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-ORC001-025-045-210700-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOISE IDAHO
159 PM MST FRI FEB 20 2015

...DROUGHT CONTINUES ACROSS MUCH OF SOUTHERN IDAHO AND SOUTHEAST
OREGON...

SYNOPSIS...

ACCORDING TO THE FEBRUARY 17 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 NEAR THE OREGON BORDER
ACROSS WESTERN WASHINGTON AND WESTERN ADAMS COUNTIES. EXTREME
DROUGHT (D3 CLASSIFICATION) EXISTS ACROSS FAR 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 TO SEVERE DROUGHT
(D1 AND 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...

A NUMBER OF SMALLER RESEVOIRS IN SOUTH CENTRAL IDAHO ARE HOLDING
BELOW NORMAL STORAGE. IN EASTERN OREGON...MOST OF THE LARGE
RESERVOIRS ARE HOLDING WELL BELOW NORMAL STORAGE.

GROUND WATER IS BEING IMPACTED BY LONG TERM DROUGHT WITH OVERALL
DECLINES IN THE SNAKE PLAIN AQUIFER. AQUIFER DECLINES ARE EVIDENT IN
DECREASED REACH GAINS ON THE SNAKE RIVER BETWEEN MILNER AND KING
HILL...IN ADDITION TO FALLING GROUND WATER DEPTHS.

WATER SUPPLY CONCERNS HAVE INCREASED FOR SOME DUE TO MUCH OF THE
WINTER PRECIPITATION FALLING AS RAIN INSTEAD OF SNOW. WELL BELOW
NORMAL SNOWPACK ACROSS EASTERN OREGON AND FAR SOUTHWEST IDAHO HAVE
IRRIGATORS VERY CONCERNED...PARTICULARLY THOSE THAT RELY ON OWYHEE
RESERVOIR OR NATURAL STREAMFLOW.

ACCORDING TO THE U.S. DEPARTMENT OF AGRICULTURE FARM SERVICE
AGENCY...IN 2015 TWIN FALLS COUNTY HAS BEEN DESIGNATED AS A PRIMARY
DROUGHT DISASTER COUNTY. CONTIGUOUS DROUGHT DISASTER COUNTIES IN
IDAHO INCLUDE CASSIA...ELMORE...GOODING...JEROME...ONEIDA AND
OWYHEE...AND HARNEY AND MALHEUR COUNTIES IN SOUTHEAST OREGON. 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...

AS OF FEBRUARY 20...PRECIPITATION FOR THE 2015 WATER YEAR WAS BELOW
AVERAGE FOR MOST OF EASTERN AND SOUTH CENTRAL IDAHO...AND ACROSS
MOST OF MALHEUR COUNTY AND WESTERN BAKER COUNTY IN OREGON.
ELSEWHERE...PRECIPITATION HAS BEEN NEAR OR ABOVE NORMAL.

NRCS SNOTEL DATA FOR IDAHO INDICATED AROUND 55 PERCENT OF MEDIAN
SNOWPACK FOR THE SPOKANE BASIN AND PANHANDLE REGION...AND 38 TO 46
PERCENT OF MEDIAN FOR THE WEISER AND OWYHEE BASINS. OTHERWISE...
BASIN SNOWPACK ACROSS THE REST OF IDAHO RANGED FROM ABOUT 75 TO 110
PERCENT OF MEDIAN. ACROSS SOUTHEAST OREGON...SNOWPACK RANGED FROM 37
TO 53 PERCENT OF MEDIAN.

JANUARY TEMPERATURES WERE SEVERAL DEGREES ABOVE AVERAGE FOR ALMOST
ALL OF IDAHO AND SOUTHEAST OREGON. SINCE THE BEGINNING OF
FEBRUARY...TEMPERATURES ACROSS CENTRAL AND SOUTHERN IDAHO...AND
SOUTHEAST OREGON HAVE BEEN ABOUT 10 TO 15 DEGREES ABOVE NORMAL...AND
ABOUT 5 TO 10 DEGREES ABOVE NORMAL FOR NORTHERN IDAHO.

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

       OCT 1 2014-FEB 19 2015      NORMAL     DEPARTURE    LAST
        TOTAL PRECIP(INCHES)       VALUE     FROM NORMAL   YEAR

BOISE            8.01               5.54        2.47       5.78
MCCALL          12.89               9.11        3.78       8.27
TWIN FALLS       4.37               4.80       -0.43       2.67
POCATELLO        3.36               4.83       -1.47       2.97
IDAHO FALLS      1.91               3.68       -1.77       2.07
CHALLIS          2.36               2.84       -0.48       1.78
STANLEY          9.95               7.60        2.35       9.82
LEWISTON         6.16               4.71        1.45       3.32
BAKER CITY, OR   3.19               3.70       -0.51       2.75
BURNS, OR        5.65               5.36        0.29       3.04
ROME, OR         2.35               3.34       -0.99       0.92


PRECIPITATION AND TEMPERATURE OUTLOOK...

THE OUTLOOK FOR THE REMAINDER OF FEBRUARY FAVORS NEAR NORMAL
TEMPERATURES AND ABOVE NORMAL PRECIPITATION ACROSS THE REGION.

THE THREE MONTH OUTLOOK FOR MARCH THROUGH MAY FAVORS ABOVE NORMAL
TEMPERATURES. MEANWHILE...PROBABILITIES FAVOR ABOVE NORMAL
PRECIPITATION FOR EASTERN IDAHO...AND EQUAL CHANCES OF EITHER ABOVE
NORMAL...NORMAL...OR BELOW NORMAL PRECIPITATION ELSEWHERE.

HYDROLOGIC SUMMARY...

AS OF FEBRUARY 20...28 DAY AVERAGE STREAMFLOWS AT USGS GAGING
STATIONS IN IDAHO WERE NORMAL OR ABOVE NORMAL NORTH OF THE SNAKE
RIVER PLAIN AND IN THE SNAKE RIVER HEADWATERS REGION. FOR THE REST
OF SOUTHERN IDAHO AND SOUTHEAST OREGON...STREAMFLOWS WERE GENERALLY
A MIX OF BELOW NORMAL AND NORMAL.

MAJOR RESERVOIR SYSTEMS ACROSS IDAHO WERE GENERALLY HOLDING NEAR
AVERAGE OR ABOVE AVERAGE STORAGE. A FEW OF THE SMALLER RESERVOIRS IN
SOUTHERN IDAHO WERE ONLY HOLDING ABOUT 50 PERCENT OF AVERAGE. MAJOR
RESERVOIRS IN SOUTHEAST OREGON WERE WELL BELOW AVERAGE...EXCEPT FOR
THIEF VALLEY AND UNITY RESERVOIRS WHICH WERE NEAR OR A LITTLE BELOW
NORMAL.

FEBRUARY 1 2015 RESERVOIR DATA

                 PERCENT OF CAPACITY     PERCENT OF AVG
IDAHO
AMERICAN FALLS           71                     106
ANDERSON RANCH           58                     101
ARROWROCK                91                     141
BEAR LAKE                42                      94
BLACKFOOT                48                      91
BROWNLEE                115                     137
CASCADE                  68                     103
COEUR D ALENE            65                     160
DEADWOOD                 71                     130
DWORSHAK                 75                     111
HENRYS LAKE              98                     110
ISLAND PARK              82                     110
LAKE LOWELL              24                      43
LITTLE WOOD              41                      75
LUCKY PEAK               33                      93
MACKAY                   63                     107
MAGIC                    20                      55
MANN CREEK               28                      86
MONTPELIER               60                     140
OAKLEY                   23                      76
PALISADES                81                     124
PEND OREILLE             34                      71
PRIEST LAKE              42                      89
RIRIE                    57                     118
SALMON FALLS             11                      47

EASTERN OREGON
OWYHEE                   17                      35
WARM SPRINGS             10                      27
BEULAH                   29                      67
BULLY CREEK              22                      54
UNITY                    39                      84
PHILLIPS                 23                      52
THIEF VALLEY             80                      98

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 LATE
MARCH.

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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