000
AXUS75 KRIW 072234
DGTRIW
WYC003-013-017-019-023-025-029-035-037-039-043-142245-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
334 PM MST THU JAN 7 2021

...EXTREME DROUGHT CONDITIONS PERSIST ACROSS CENTRAL WYOMING...

.SYNOPSIS:

.DROUGHT INTENSITY AND EXTENT:
ACCORDING TO THE JANUARY 7TH RELEASE OF THE U.S. DROUGHT MONITOR,
EXTREME (D3) DROUGHT CONDITIONS REMAINED ACROSS ALL BUT THE 
EXTREME EASTERN PARTS OF NATRONA AND JOHNSON COUNTIES AS WELL AS 
EASTERN HOT SPRINGS, AND ALL BUT NORTHWESTERN WASHAKIE COUNTIES, 
INCLUDING CENTRAL AND EASTERN FREMONT AND EXTREME EASTERN AND 
SOUTHERN SWEETWATER COUNTIES.

SEVERE (D2) DROUGHT CONDITIONS HAVE CONTINUED ACROSS CENTRAL AND 
SOUTHERN SUBLETTE, NORTHEASTERN LINCOLN AND NORTHWEST AND EASTERN 
SWEETWATER COUNTIES, EXTREME EASTERN JOHNSON AND NATRONA COUNTIES, 
AS WELL AS THE REST OF WASHAKIE, EASTERN BIG HORN, CENTRAL HOT 
SPRINGS, AND WEST CENTRAL AND SOUTHERN FREMONT COUNTIES.

MODERATE (D1) DROUGHT CONDITIONS HAVE PERSISTED ACROSS THE REST OF 
BIG HORN, HOT SPRINGS, LINCOLN, SUBLETTE AND SWEETWATER COUNTIES, AS 
WELL AS WEST CENTRAL FREMONT COUNTY. ABNORMALLY DRY (D0) CONDITIONS 
CONTINUED ACROSS EXTREME NORTHERN TETON, NORTHERN AND WESTERN PARK, 
EXTREME WESTERN FREMONT, NORTHERN SUBLETTE AND LINCOLN COUNTIES.

.PRECIPITATION:
THE MONTH OF DECEMBER STARTED OUT ON THE DRY SIDE FOR THE FIRST 
WEEK, THEN A FEW WEAK CANADIAN COLD FRONTS THAT BROUGHT SOME SNOW 
TO THE STATE MID-MONTH, BEFORE DRYING OUT FOR THE LAST WEEK OF THE
YEAR. DECEMBER PRECIPITATION ONCE AGAIN REMAINED BELOW NORMAL FOR
MUCH OF THE REGION, ESPECIALLY ACROSS THE NORMALLY WET NORTHWEST 
WHERE ONLY 60 TO 70 PERCENT OF NORMAL PRECIPITATION FELL, AND 
EASTERN PARK AND WESTERN HOT SPRING COUNTIES WHICH RECEIVED LESS 
THAN 25 PERCENT OF NORMAL. THE WET SPOTS FOR THE REGION FOR 
DECEMBER WERE LOCATED ACROSS EASTERN FREMONT AND SOUTHWEST NATRONA
COUNTIES WHERE OVER 150 PERCENT OF NORMAL PRECIPITATION FELL.

.HYDROLOGIC CONDITIONS:
AVERAGE MONTHLY STREAM FLOWS ACROSS THE REGION HAVE IMPROVED 
SLIGHTLY IN DECEMBER TO JUST AROUND NORMAL FOR THIS TIME OF YEAR. 
THIS ALSO ASSISTED IN LEVELING OFF RESERVOIR LEVELS ACROSS THE 
REGION AS DEMAND FOR DOWNSTREAM IRRIGATION WATER HAS CEASED WITH 
THE END OF THE MAIN GROWING SEASON.


.SUMMARY OF IMPACTS:

.AGRICULTURE IMPACTS...
THE LATEST CROP REPORTS HAVE INDICATED THAT LOW SOIL MOISTURE 
CONDITIONS CONTINUED DURING DECEMBER. THE DECEMBER 2020 USDA WYOMING 
CROP PROGRESS REPORT INDICATED THAT 79 PERCENT OF TOPSOIL MOISTURE 
ACROSS THE STATE WERE REPORTED AT THE SHORT TO VERY SHORT LEVELS, 
COMPARED TO 30 PERCENT THIS TIME LAST YEAR. SUBSOIL MOISTURE ALSO 
REMAINED ON THE DRY SIDE AS 82 PERCENT WERE REPORTED BEING VERY 
SHORT TO SHORT, COMPARED TO 41 PERCENT A YEAR AGO.

LIVESTOCK PASTURE AND RANGE CONDITIONS REMAINED THE MOST NEGATIVELY 
AFFECTED AREA BY THE DROUGHT ACROSS WYOMING.  REPORTS ACROSS THE 
STATE HAVE INDICATED THAT SOME RANCHERS HAVE BEEN FEEDING HAY TO 
HERDS EARLIER THAN NORMAL DUE TO THE LACK OF ADEQUATE PASTURE AND 
ARE CONCERNED ABOUT REDUCED HAY SUPPLIES AS WINTER APPROACHES. 
PASTURE AND RANGELAND CONDITIONS HAVE BEEN RATED AT 47 PERCENT VERY 
POOR TO POOR, COMPARED TO 17 PERCENT THIS TIME LAST YEAR.

.FIRE DANGER IMPACTS...
SOME SNOW ON THE GROUND AND A SERIES OF CANADIAN COLD FRONTS THAT 
DID SLIDE ACROSS THE REGION AROUND THE MIDDLE TWO WEEKS OF DECEMBER 
HELPED TO REDUCE WILDFIRE DANGER ACROSS MUCH OF WYOMING DURING 
DECEMBER. THE LATEST NATIONAL INTERAGENCY FIRE CENTER (NIFC) 
OBSERVED FIRE DANGER RATINGS HAVE MODERATE DANGER RATINGS ACROSS 
EASTERN THIRD OF THE STATE WITH LOW FIRE DANGER CONCERNS ACROSS THE 
FAR WEST AND NORTH.

.DROUGHT MITIGATION ACTIONS:

THE LONG TERM DROUGHT CONDITIONS ACROSS WYOMING HAVE FORCED A NUMBER 
RANCHERS TO MOVE THEIR HERDS TO WINTER PASTURE LANDS EARLIER THIS 
SUMMER AND NOW ARE FEEDING HAY TO THEM DUE TO THE POOR PASTURE 
CONDITIONS. CONCERNS NOW ARE POINTED TOWARDS WINTER FEED FOR THE 
HERDS AND POSSIBLE SHORTAGES OF HAY STOCK. HAY AND ROUGHAGE SUPPLIES 
ACROSS WYOMING WERE REPORTED 39 PERCENT VERY SHORT TO SHORT, 
COMPARED TO 32 PERCENT JUST A MONTH AGO.

.LOCAL PRECIPITATION/TEMPERATURE OUTLOOK:

THE CLIMATE PREDICTION CENTER`S (CPC) OUTLOOK FOR THE REST OF 
JANUARY INDICATED BETTER THAN AVERAGE CHANCES OF WARMER THAN NORMAL 
TEMPERATURES ACROSS WYOMING, ALONG WITH AN EVEN CHANCE OF NEAR 
NORMAL NORMAL PRECIPITATION. THE CPC SEASONAL OUTLOOKS FOR THE 
PERIOD OF JANUARY THROUGH MARCH INDICATED AN EVEN CHANCE OF NEAR 
NORMAL TEMPERATURES AND PRECIPITATION, WITH A SLIGHT CHANCE OF 
ABOVE NORMAL PRECIPITATION FOR NORTHWEST WYOMING.

THE CURRENT MONTHLY DROUGHT OUTLOOK FOR JANUARY DEPICTS THAT DROUGHT 
CONDITIONS WILL PERSIST ACROSS WYOMING THROUGH THE REST OF THE 
MONTH, AS THE UPDATED SEASONAL DROUGHT OUTLOOK THROUGH THE END OF 
MARCH CONTINUES TO INDICATE THAT DROUGHT CONDITIONS WILL PERSIST 
ACROSS MUCH OF WYOMING THROUGH THE PERIOD.

.NEXT ISSUANCE DATE:

THIS PRODUCT WILL BE UPDATED IN MID FEBRUARY OR SOONER IF NECESSARY, 
IN RESPONSE TO SIGNIFICANT CHANGES IN CONDITIONS.

&&

.RELATED WEB SITES:

ADDITIONAL INFORMATION ON CURRENT DROUGHT CONDITIONS MAY BE FOUND AT
THE FOLLOWING WEB ADDRESSES:

U.S. DROUGHT MONITOR: HTTPS://WWW.DROUGHTMONITOR.UNL.EDU
U.S. DROUGHT INFORMATION SYSTEM: HTTPS://DROUGHT.GOV
NWS RIVERTON DROUGHT PAGE: HTTPS://WWW.WEATHER.GOV/RIW/DROUGHT
WYOMING WATER RESOURCE DATA SYSTEM (WRDS): HTTP://WWW.WRDS.UWYO.EDU

TO REPORT EFFECTS OF THE DROUGHT IN YOUR AREA, PLEASE GO TO THE 
DROUGHT IMPACT REPORTER AT: HTTP://DROUGHTREPORTER.UNL.EDU/

.ACKNOWLEDGMENTS:

THE U.S. DROUGHT MONITOR IS A MULTI-AGENCY EFFORT INVOLVING THE 
NATIONAL WEATHER SERVICE AND NATIONAL CENTERS FOR ENVIRONMENTAL 
INFORMATION, THE U.S. DEPARTMENT OF AGRICULTURE (USDA), STATE AND 
REGIONAL CLIMATOLOGISTS, AND THE NATIONAL DROUGHT MITIGATION CENTER. 
INFORMATION FOR THIS STATEMENT WAS GATHERED FROM NWS AND FAA 
OBSERVATION SITES, STATE COOPERATIVE EXTENSION SERVICES, THE USDA 
AND USGS.

.QUESTIONS OR COMMENTS:

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS DROUGHT INFORMATION
STATEMENT, PLEASE CONTACT:

NATIONAL WEATHER SERVICE
12744 WEST US HIGHWAY 26
RIVERTON, WY 82501
PHONE:  800-211-1448
EMAIL:  NWS.RIVERTON@NOAA.GOV

$$

TEAM RIVERTON

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