Drought Information Statement
Issued by NWS Boise, ID
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000 AXUS75 KBOI 171732 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-ORC001-025-045-180600- DROUGHT INFORMATION STATEMENT NATIONAL WEATHER SERVICE BOISE IDAHO 1132 AM MDT FRI OCT 17 2014 ...DROUGHT CONDITIONS IMPROVE ACROSS PORTIONS OF EASTERN IDAHO BUT EXPAND ACROSS WEST CENTRAL IDAHO... SYNOPSIS... ABOVE NORMAL PRECIPITATION IN AUGUST AND SEPTEMBER LED TO SOME IMPROVEMENT IN DROUGHT CONDITIONS ACROSS EASTERN IDAHO. MEANWHILE... DROUGHT CONDITIONS HAVE EXPANDED ACROSS PORTIONS OF WEST CENTRAL IDAHO. ELSEWHERE...THERE HAS BEEN LITTLE CHANGE IN THE DROUGHT SITUATION SINCE MID SEPTEMBER AS SUB-PAR WINTER SNOWPACK...BELOW NORMAL SPRING PRECIPITATION...AND HOT AND DRY SUMMER CONDITIONS HAVE ALLOWED DROUGHT TO PERSIST. ACCORDING TO THE OCTOBER 14 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 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 THE LOWER WEISER BASIN. IN SOUTHEAST OREGON...EXTREME DROUGHT (D3 CLASSIFICATION) EXTENDS ACROSS HARNEY AND MALHEUR COUNTY 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 JANUARY 31 2015 INDICATES DROUGHT WILL CONTINUE FOR AREAS THAT ARE ALREADY EXPERIENCING DROUGHT...AND DROUGHT CONDITIONS ARE LIKELY TO DEVELOP ACROSS PORTIONS OF NORTHERN IDAHO. SUMMARY OF REPORTED IMPACTS... RESIDENTS OF THE WOOD RIVER VALLEY SOUTH OF KETCHUM IDAHO HAVE HAD LOW WATER PRESSURE AND WELLS RUN DRY DUE TO A LOWERING GROUND WATER TABLE. 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. STREAMFLOW AT MANY USGS GAGING STATIONS REMAINS BELOW OR WELL BELOW NORMAL. FIRE SEASON CONTINUES ACROSS SOUTHEAST OREGON AS WILDLAND FUELS REMAIN CRITICALLY DRY. STATE DROUGHT DECLARATIONS HAVE BEEN DECLARED FOR THE FOLLOWING IDAHO COUNTIES...BUTTE...BLAINE...CLARK...CUSTER...AND LINCOLN. OREGON STATE DROUGHT DECLARATIONS INCLUDE BAKER...HARNEY AND MALHEUR COUNTIES. DECLARING A DROUGHT EMERGENCY HELPS COORDINATE LOCAL... STATE AND FEDERAL EFFORTS TO REDUCE THREATS TO AGRICULTURE... RECREATION AND NATURAL RESOURCES IN THE COUNTY. THE DECLARATIONS ALLOW INCREASED FLEXIBILITY IN HOW WATER IS MANAGED TO ENSURE THAT LIMITED SUPPLIES ARE USED AS EFFICIENTLY AS POSSIBLE. THEY ALSO MAKE THE COUNTIES ELIGIBLE FOR FEDERAL ASSISTANCE. AS OF OCTOBER 15...THE U.S. DEPARTMENT OF AGRICULTURE FARM SERVICE AGENCY PRIMARY DROUGHT DISASTER COUNTIES IN IDAHO INCLUDE BINGHAM... 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 2014 WATER YEAR. OCT 1 2013-SEP 30 2014 NORMAL DEPARTURE LAST TOTAL PRECIP(INCHES) VALUE FROM NORMAL YEAR BOISE 12.44 11.73 0.71 9.31 MCCALL 21.48 20.10 1.38 29.10 TWIN FALLS 13.51 10.70 2.81 7.29 POCATELLO 11.63 12.13 -0.50 8.96 IDAHO FALLS 10.13 10.39 -0.26 7.71 CHALLIS 6.66 10.06 -3.40 6.27 STANLEY 19.52 17.06 2.46 18.69 LEWISTON 9.45 12.31 -2.86 12.12 BAKER CITY, OR 7.17 10.13 -2.96 9.95 BURNS, OR 7.22 10.92 -3.70 9.83 ROME, OR 3.59 8.92 -5.33 5.10 FOR THE 30 DAY PERIOD FROM SEPTEMBER 15 TO OCTOBER 14...AVERAGE TEMPERATURES WERE GENERALLY 2 TO 4 DEGREES(F) ABOVE NORMAL ACROSS IDAHO...AND 4 TO 8 DEGREES ABOVE NORMAL ACROSS SOUTHEAST OREGON. PRECIPITATION AND TEMPERATURE OUTLOOK... THE OUTLOOK FOR NOVEMBER FAVORS ABOVE NORMAL TEMPERATURES ACROSS THE REGION WITH EQUAL CHANCES OF EITHER ABOVE NORMAL...NORMAL...OR BELOW NORMAL PRECIPITATION. THE WINTER OUTLOOK FOR DECEMBER THROUGH FEBRUARY FAVORS ABOVE NORMAL TEMPERATURES FOR IDAHO AND SOUTHEAST OREGON. PROBABILITIES FAVOR NEAR NORMAL PRECIPITATION FOR SOUTHERN IDAHO AND SOUTHEAST OREGON...AND BELOW NORMAL PRECIPITATION FOR CENTRAL AND NORTHERN IDAHO AND EAST CENTRAL OREGON. HYDROLOGIC SUMMARY... OVER THE 30 DAY PERIOD FROM SEPTEMBER 15 THROUGH OCTOBER 14... PRECIPITATION WAS GENERALLY BELOW NORMAL FOR THE NORTHERN HALF OF IDAHO...AND NORMAL TO ABOVE NORMAL ACROSS THE SOUTHERN HALF OF IDAHO. IN SOUTHEAST OREGON...PRECIPITATION IN SOUTHERN HARNEY COUNTY AND THE SOUTHERN TWO THIRDS OF MALHEUR COUNTY WAS NORMAL TO ABOVE NORMAL. MEANWHILE...BELOW NORMAL PRECIPITATION OCCURRED FROM NORTHERN HARNEY COUNTY ACROSS NORTHERN MALHEUR COUNTY AND BAKER COUNTY. USGS 28 DAY AVERAGE STREAMFLOWS AS OF OCTOBER 15 WERE GENERALLY NORMAL TO ABOVE NORMAL FOR THE MAINSTEM SNAKE RIVER ABOVE AMERICAN FALLS...THE BEAR RIVER....AND THE BOISE AND PAYETTE RIVERS. STREAMFLOWS ON THE MAINSTEM SNAKE RIVER AND MANY TRIBUTARIES BELOW AMERICAN FALLS WERE BELOW NORMAL..AS WERE STREAMFLOWS ACROSS SOUTHEAST OREGON. A MIX OF NORMAL TO BELOW NORMAL STREAMFLOWS EXISTED ACROSS CENTRAL AND NORTHERN IDAHO. OCTOBER 1 2014 RESERVOIR DATA PERCENT OF CAPACITY PERCENT OF AVG IDAHO AMERICAN FALLS 17 65 ANDERSON RANCH 55 90 ARROWROCK 29 134 BEAR LAKE 36 72 BLACKFOOT 41 91 BROWNLEE 112 142 CASCADE 58 90 COEUR D ALENE 78 98 DEADWOOD 58 121 DWORSHAK 64 91 HENRYS LAKE 95 113 ISLAND PARK 52 115 LAKE LOWELL 41 92 LITTLE WOOD 5 25 LUCKY PEAK 44 121 MACKAY 23 141 MAGIC 9 35 MANN CREEK NA NA MONTPELIER CREEK NA NA OAKLEY 14 70 PALISADES 52 97 PEND OREILLE 89 101 PRIEST LAKE 101 101 RIRIE 64 115 SALMON FALLS 5 26 EASTERN OREGON OWYHEE 0 0 WARM SPRINGS 0 0 BEULAH 3 19 BULLY CREEK 1 3 UNITY 6 33 PHILLIPS 15 41 THIEF VALLEY 0 0 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 NOVEMBER. 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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National Weather Service
Boise Weather Forecast Office
NIFC Building 3807
Boise, ID 83705-5354
(208) 334-9860
Page last modified: 17-Oct-2014 5:32 PM
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