Drought Information Statement
Issued by NWS Boise, ID

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
AXUS75 KBOI 271659
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-ORC001-025-045-280600-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOISE IDAHO
1057 AM MDT THU AUG 27 2015

...SEVERE TO EXTREME DROUGHT ACROSS MUCH OF WESTERN AND NORTHERN IDAHO AND
SOUTHEAST OREGON...

SYNOPSIS...

ACCORDING TO THE AUGUST 25 U.S. DROUGHT MONITOR...MODERATE DROUGHT (D1) WITH
POCKETS OF SEVERE DROUGHT (D2) EXIST ACROSS EASTERN IDAHO...EXCEPT FOR
ABNORMALLY DRY (D0) CONDITIONS ACROSS THE FAR SOUTHEAST PORTION OF THE STATE.
ACROSS SOUTHWEST...WEST CENTRAL AND NORTHERN IDAHO...CONDITIONS DETERIORATE TO
SEVERE DROUGHT (D2) AND EXTREME DROUGHT (D3). IN SOUTHEAST OREGON...EXTREME
DROUGHT (D3) PERSISTS ACROSS HARNEY...MALHEUR AND BAKER COUNTY.

THE SEASONAL OUTLOOK FROM THE CLIMATE PREDICTION CENTER INDICATES THAT DROUGHT
CONDITIONS WILL PERSIST OR INTENSIFY THROUGH THE FALL.

DROUGHT SEVERITY CLASSIFICATION POSSIBLE IMPACTS...

(D0)ABNORMALLY DRY...GOING INTO DROUGHT. SHORT TERM DRYNESS SLOWING
PLANTING AND GROWTH OF CROPS OR PASTURES. COMING OUT OF DROUGHT.
SOME LINGERING WATER DEFICITS. PASTURES OR CROPS NOT FULLY
RECOVERED.

(D1)MODERATE DROUGHT...SOME DAMAGE TO CROPS AND PASTURES.
STREAMS...RESERVOIRS OR WELLS LOW. 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.

SUMMARY OF REPORTED IMPACTS...

THE EARLY LOSS OF SNOWPACK COMBINED WITH THE LACK OF SPRING PRECIPITATION CAN
BE SEEN IN THE REMARKABLY LOW FLOWS ON MANY OF THE REGIONS STREAMS AND RIVERS.
MANY STREAMFLOWS WERE AT LOW FLOWS TYPICALLY SEEN IN LATE SUMMER AND EARLY FALL
WEEKS TO MONTHS IN ADVANCE.

OUTDOOR WATERING RESTRICTIONS ARE IN PLACE IN KETCHUM IDAHO. OTHER COMMUNITIES
HAVE IMPOSED OUTDOOR WATERING SCHEDULES OR HAVE ASKED RESIDENTS TO VOLUNTARILY
CONSERVE WATER.

THE LACK OF WATER HAS CAUSED CONFLICT BETWEEN RECREATION ON PRIEST LAKE AND
SUFFICIENT WATER RELEASES TO SUPPORT FISH HABITAT IN THE PRIEST RIVER.

WHEAT CROP IN LEWIS COUNTY IDAHO WAS STUNTED BY SEVERE DROUGHT. SOME FARMERS IN
CLEARWATER COUNTY HAVE SEEN ALMOST TWO THIRDS OF THEIR CROPS ELIMINATED DUE TO
DROUGHT.

ABOVE AVERAGE TEMPERATURES AT LEAST PARTIALLY ATTRIBUTED TO DROUGHT HAVE CAUSED
WARMER WATER TEMPERATURES IN A NUMBER OF LAKES AND STREAMS. THE WARMER WATER
HAS CAUSED FISH MORTALITY IN SOME PONDS. DROUGHT AND LOW RUNOFF HAS LED IDAHO
FISH AND GAME TO ALLOW FISH SALVAGE ON SOME RIVERS...LAKES AND CANALS IN
SOUTHERN IDAHO.

THE OREGON GOVERNOR ORDERED STATE AGENCIES TO LIMIT WATER CONSUMPTION DUE TO
ONGOING DROUGHT...WITH A GOAL OF REDUCING WATER CONSUMPTION BY AN AVERAGE OF 15
PERCENT OR MORE AT ALL STATE OWNED FACILITIES BY THE END OF 2020.

THE SPRING AT BOUNDARY CREEK CAMPGROUND ALONG THE MIDDLE FORK OF THE SALMON
RIVER IN CENTRAL IDAHO HAS RUN DRY ACCORDING TO THE U.S. FOREST SERVICE.

EXTRA FIREFIGHTING RESOURCES WERE BROUGHT TO NORTHERN IDAHO BECAUSE FORESTS
WERE DRIER THAN THEY HAVE BEEN SINCE THE 1950S ACCORDING TO A U.S. FOREST
SERVICE SPOKESMAN. NUMEROUS WILDFIRES HAVE OCCURRED IN DROUGHT STRICKEN AREAS
AND FIRE RESTRICTIONS AND BURN BANS REMAIN IN PLACE. THE NATIONAL INTERAGENCY
FIRE CENTER PREDICTIVE SERVICES INDICATES THAT SIGNIFICANT WILDLAND FIRE
POTENTIAL FOR THE MONTH OF SEPTEMBER IS ABOVE NORMAL ACROSS NORTHERN IDAHO.

SEVERAL RESERVOIRS IN SOUTHERN IDAHO AND SOUTHEAST OREGON CONTAIN WELL BELOW
NORMAL STORAGE DUE TO DROUGHT AND LACK OF RUNOFF. MOST THE OF RESERVOIRS IN
SOUTHEAST OREGON HAVE LITTLE TO NO IRRIGATION WATER REMAINING IN THEM.

MANY EASTERN OREGON FARMERS HAVE HAD TO ADJUST THEIR CROPS TO ACCOMMODATE
DROUGHT. GIVEN THE MULTIPLE YEAR DROUGHT...LOW WATER STORAGE AND LOW STREAM
FLOWS...PRODUCERS HAVE HAD TO MAKE ADJUSTMENTS ABOUT WATER USE AND CROP
ROTATIONS. SOME FARMERS LEFT SEVERAL HUNDRED ACRES UNPLANTED OR FALLOWED THIS
YEAR.

ACCORDING TO THE NORTHWEST RIVER FORECAST CENTER...OBSERVED RUNOFF FOR THE 2015
WATER YEAR SO FAR RANGES FROM 30 TO 70 PERCENT OF NORMAL ACROSS ALMOST ALL OF
IDAHO. THE EXCEPTION IS PORTIONS OF THE UPPER SNAKE RIVER WHERE OBSERVED RUNOFF
WAS 75 TO 85 PERCENT OF NORMAL. ACROSS SOUTHEAST OREGON...WATER YEAR OBSERVED
RUNOFF TO DATE RANGED FROM 15 TO 50 PERCENT OF NORMAL. LACK OF PRECIPITATION...
SPRING RUNOFF AND RESERVOIR STORAGE LED TO MUCH EARLIER THAN NORMAL IRRIGATION
WATER SHUTOFF FOR SOME FARMERS.

STATE DROUGHT EMERGENCY DECLARATIONS HAVE BEEN DECLARED IN IDAHO FOR BLAINE
...BUTTE...CLEARWATER...CUSTER...FREMONT...LEWIS...LINCOLN AND TETON COUNTIES.
IN SOUTHEAST OREGON...STATE DECLARATIONS HAVE BEEN DECLARED FOR BAKER...HARNEY
AND MALHEUR COUNTIES.

ACCORDING TO THE U.S. DEPARTMENT OF AGRICULTURE FARM SERVICE AGENCY...AS OF
AUGUST 26 THE FOLLOWING 32 IDAHO COUNTIES HAVE BEEN DESIGNATED AS PRIMARY
DROUGHT DISASTER COUNTIES...ADAMS...BENEWAH...BINGHAM...BLAINE...BONNER...
BOUNDARY...BUTTE...CAMAS...CANYON...CASSIA...CLARK...CLEARWATER...CUSTER...
ELMORE...FREMONT...GOODING...IDAHO...JEFFERSON...JEROME...KOOTENAI...LATAH...
LEMHI...LEWIS...LINCOLN...MINIDOKA...NEZ PERCE...OWYHEE...PAYETTE...SHOSHONE
...TWIN FALLS...VALLEY AND WASHINGTON. CONTIGUOUS DROUGHT DISASTER COUNTIES IN
IDAHO INCLUDE ADA...BANNOCK...BOISE...BONNEVILLE...CARIBOU...GEM...MADISON...
ONEIDA...POWER AND TETON. IN SOUTHEAST OREGON...BAKER...HARNEY AND MALHEUR
COUNTIES ARE PRIMARY DROUGHT DISASTER COUNTIES.

CLIMATE SUMMARY...

PRECIPITATION FOR THE 2015 WATER YEAR TO DATE (OCTOBER 1 TO AUGUST 24) WAS 100
TO 110 PERCENT OF AVERAGE ACROSS FAR SOUTHEAST IDAHO AND MUCH OF SOUTHERN
HARNEY COUNTY IN SOUTHEAST OREGON. FOR THE REST OF IDAHO AND SOUTHEAST
OREGON...WATER YEAR PRECIPITATION WAS GENERALLY BETWEEN 70 AND 95 PERCENT OF
AVERAGE WITH A FEW POCKETS OF 100 PERCENT OF AVERAGE. ALTHOUGH WATER YEAR
PRECIPITATION MAY NOT BE TOO FAR BELOW NORMAL FOR MUCH OF IDAHO AND SOUTHEAST
OREGON...THE REGION IS HIGHLY DEPENDENT ON WINTER SNOWPACK. WELL ABOVE NORMAL
WINTER AND SPRING TEMPERATURES CAUSED MORE PRECIPITATION TO FALL AS RAIN
INSTEAD OF SNOW LAST WINTER...RESULTING IN WELL BELOW NORMAL SNOWPACK FOR MOST
AREAS. ADDITIONALLY...SNOWPACK WAS LOST AS MUCH AS 4 TO 8 WEEKS EARLIER THAN
AVERAGE ACROSS MUCH OF THE REGION DUE TO ABOVE NORMAL TEMPERATURES.

PRECIPITATION FOR THE JUNE THROUGH AUGUST PERIOD TO DATE WAS BETWEEN 25 AND 75
PERCENT OF AVERAGE FOR ALMOST ALL OF IDAHO AND SOUTHEAST OREGON. EXCEPTIONS ARE
PORTIONS OF THE CENTRAL IDAHO MOUNTAINS AND FAR SOUTHEAST IDAHO WHERE 100 TO
150 PERCENT OF AVERAGE PRECIPITATION OCCURRED.

AVERAGE TEMPERATURES FOR JUNE THROUGH AUGUST HAVE GENERALLY BEEN 1 TO 4 DEGREES
(F) ABOVE AVERAGE ACROSS THE SOUTHERN HALF OF IDAHO...AND 2 TO 6 DEGREES (F)
ABOVE AVERAGE ACROSS THE NORTHERN HALF OF IDAHO AND SOUTHEAST OREGON.

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

       OCT 1 2014-AUG 25 2015      NORMAL     DEPARTURE    LAST
         TOTAL PRECIP(INCHES)      VALUE     FROM NORMAL   YEAR

BOISE           12.02              11.09        0.93      11.50
MCCALL          20.87              19.07        1.80      20.65
TWIN FALLS       8.51              10.05       -1.54      12.70
POCATELLO        9.16              11.16       -2.00      10.15
IDAHO FALLS      8.84               9.42       -0.58       7.54
CHALLIS          5.74               9.15       -3.41       5.44
STANLEY         17.08              15.96        1.12      18.21
LEWISTON        10.30              11.49       -1.19       9.20
BAKER CITY, OR   9.48               9.43        0.05       6.60
BURNS, OR        9.28              10.41       -1.13       6.94
ROME, OR         7.67               8.54       -0.78       2.49


PRECIPITATION AND TEMPERATURE OUTLOOK...

THE THREE MONTH OUTLOOK FROM THE CLIMATE PREDICTION CENTER FOR SEPTEMBER
THROUGH NOVEMBER FAVORS ABOVE NORMAL TEMPERATURES ACROSS THE REGION. FOR
PRECIPITATION...PROBABILITIES SLIGHTLY FAVOR BELOW NORMAL PRECIPITATION FOR
WEST CENTRAL AND NORTHERN IDAHO...AND ABOVE NORMAL PRECIPITATION FOR EXTREME
SOUTHEAST IDAHO. ELSEWHERE...THERE ARE EQUAL CHANCES OF EITHER ABOVE
NORMAL...NORMAL...OR BELOW NORMAL PRECIPITATION.

HYDROLOGIC SUMMARY...

AS OF AUGUST 25...28 DAY AVERAGE STREAMFLOWS AT USGS GAGING STATIONS ACROSS THE
SOUTHERN HALF OF IDAHO WERE MUCH BELOW NORMAL TO NORMAL. MOST OF THE NORMAL
FLOWS WERE DUE TO RESERVOIR REGULATION...WHILE AT SEVERAL UNREGULATED STATIONS
THE FLOWS WERE WITHIN THE 10 PERCENTILE CLASS FOR LOW FLOW. ACROSS THE
REMAINDER OF IDAHO AND SOUTHEAST OREGON...28 DAY AVERAGE STREAMFLOWS WERE
MOSTLY BELOW NORMAL OR MUCH BELOW NORMAL...WITH SEVERAL GAGING STATIONS IN
NORTHERN IDAHO NEAR OR AT NEW RECORD LOW FLOWS.

MAJOR RESERVOIR SYSTEMS ACROSS IDAHO WERE GENERALLY HOLDING NEAR AVERAGE OR A
LITTLE BELOW AVERAGE STORAGE. MANY OF THE SMALLER RESERVOIRS IN SOUTH CENTRAL
IDAHO WERE ONLY HOLDING ABOUT 50 PERCENT OR LESS OF AVERAGE. RESERVOIR STORAGE
ACROSS ALL OF SOUTHEAST OREGON WAS WELL BELOW AVERAGE...WITH LITTLE TO NO
IRRIGATION WATER REMAINING.

AUGUST 1 2015 RESERVOIR DATA

                 PERCENT OF CAPACITY     PERCENT OF AVG
IDAHO
AMERICAN FALLS           37                      69
ANDERSON RANCH           71                      93
ARROWROCK                33                      71
BEAR LAKE                44                      82
BLACKFOOT                55                      97
BROWNLEE                 87                      97
CASCADE                  71                      82
COEUR D ALENE            92                      94
DEADWOOD                 69                      92
DWORSHAK                 80                      90
HENRYS LAKE              92                     103
ISLAND PARK              43                      62
LAKE LOWELL              55                     120
LITTLE WOOD              23                      43
LUCKY PEAK               99                     107
MACKAY                   50                     102
MAGIC                     4                       8
MANN CREEK               17                      32
MONTPELIER               72                     148
OAKLEY                   19                      59
PALISADES                73                     100
PEND OREILLE             98                      99
PRIEST LAKE             100                      98
RIRIE                    75                      90
SALMON FALLS             13                      32

EASTERN OREGON
OWYHEE                    6                      11
WARM SPRINGS              0                       0
BEULAH                    3                       8
BULLY CREEK              17                      35
UNITY                    47                      86
PHILLIPS                 24                      38
THIEF VALLEY             29                      55

NEXT ISSUANCE DATE...

UPDATES TO THIS PRODUCT WILL BE MADE ON A MONTHLY BASIS. THE NEXT ISSUANCE OF
THE DROUGHT INFORMATION STATEMENT WILL OCCUR AROUND OCTOBER 1.

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

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.