Drought Information Statement
Issued by NWS Boise, ID
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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 $$

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