Drought Information Statement
Issued by NWS Riverton, WY

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465
AXUS75 KRIW 171036
DGTRIW
WYC003-013-017-019-023-025-029-035-037-039-043-191045-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
436 AM MDT FRI JUN 17 2016

...MODERATE DROUGHT CONDITIONS REMAIN ACROSS THE BIGHORN MOUNTAINS AND
THE NORTHERN BIGHORN BASIN IN JUNE...

SYNOPSIS...

THE LATEST DROUGHT MONITOR RELEASED ON JUNE 14TH SHOWED MODERATE
/D1/ DROUGHT REMAINED ALONG THE BIGHORN RANGE AND ACROSS THE
NORTHERN BIGHORN BASIN...OR JUST NORTH OF A GREYBULL TO POWELL
LINE. SINCE MAY...ABNORMALLY DRY /D0/ (GOING INTO DROUGHT)
CONDITIONS DEVELOPED OVER YELLOWSTONE AND GRAND TETON NATIONAL
PARKS. THE DROUGHT OUTLOOK CALLS FOR DROUGHT CONDITIONS TO PERSIST
ACROSS NORTHERN WYOMING THROUGH THE SUMMER.

SUMMARY OF IMPACTS...

RIVER AND STREAMFLOW CONDITIONS.

NEAR NORMAL (95 TO 100 PERCENT) SNOWMELT STREAMFLOW VOLUMES ARE
EXPECTED ACROSS THE STATE AS A WHOLE. ABOVE NORMAL STREAMFLOW
VOLUMES ARE EXPECTED ACROSS A MAJORITY OF THE WIND RIVER BASIN,
THE BIGHORN BASIN AND UPPER NORTH PLATTE WATERSHEDS. THE UPPER
YELLOWSTONE...SNAKE...POWDER AND TONGUE RIVER BASINS ARE
FORECASTED TO HAVE BELOW NORMAL STREAMFLOW VOLUMES DURING THE REST
OF THE SNOWMELT SEASON.

FIRE WEATHER IMPACTS...

FUELS WERE IN GREENUP WITH NO AREAS REPORTING WIDESPREAD
CRITICALLY DRY FUELS. HOWEVER...EVAPORATIVE DEMAND DROUGHT INDEX
FOR THE FIRST TWO WEEKS OF JUNE SHOWED SIGNIFICANT DRYING OF
VEGETATION IN THE BIGHORN RANGE. A FEW WILDFIRES HAVE ALREADY
OCCURRED ON THE LOWER WEST SLOPES OF THE BIGHORN RANGE IN EARLY
JUNE. THE LARGEST WILDFIRE SO FAR WAS THE SALT PLACE WILDFIRE THAT
GREW TO 220 ACRES NEAR HYATTVILLE.

THE SIGNIFICANT WILDLAND FIRE POTENTIAL OUTLOOK FOR JULY THROUGH
SEPTEMBER 2016 SHOWS A NORMAL LIKELIHOOD THAT SIGNIFICANT
WILDLAND FIRES WILL OCCUR. SIGNIFICANT WILDLAND FIRES SHOULD BE
EXPECTED AT TYPICAL TIMES AND INTERVALS DURING NORMAL SIGNIFICANT
WILDLAND FIRE POTENTIAL CONDITIONS.

CLIMATE SUMMARY...

BELOW ARE THE CUMULATIVE PRECIPITATION AMOUNTS FROM
SELECTED LOCATIONS ACROSS WEST AND CENTRAL WYOMING FOR THE
CURRENT WATER YEAR.

NOTE: BASIN-WIDE PERCENT OF AVERAGES ARE BASED ON 20TH CENTURY
(1901-2000) AVERAGES. SPECIFIC LOCATIONS PERCENT OF AVERAGES ARE
BASED ON 1981-2010 NORMALS.

LOCATION               PRECIPITATION       % OF AVERAGE
AND DROUGHT            (INCHES)
CONDITION              OCT 2015-MAY 2016
--------               -----------------   ---------

YELLOWSTONE BASIN AVG.    18.73                93
0 OLD FAITHFUL            14.40                78

SNAKE BASIN AVG.          25.55                97
  AFTON                   13.04               108
0 MOOSE                   16.68               103

GREEN AND BEAR BASIN AVG. 11.69               123
  BIG PINEY AIRPORT        7.29               208
  EVANSTON AIRPORT         2.32                39
  FOSSIL BUTTE N.M.       12.16               172
  GREEN RIVER             11.59               222
  ROCK SPRINGS            11.84               196

BIGHORN BASIN AVG.        10.33               106
0 CODY                     8.30               143
0 GREYBULL AIRPORT         2.79                64
0 POWELL FIELD STATION     3.46               101
  THERMOPOLIS             10.11               135
  WORLAND AIRPORT          5.05               114

POWDER/TONGUE BASIN AVG.   8.96                97
  BUFFALO AIRPORT          6.17                83
  KAYCEE                   7.34               103
  SHERIDAN AIRPORT         9.61               110

LOWER PLATTE BASIN AVG    12.83               144
  CASPER AIRPORT          12.16               161
  CHEYENNE AIRPORT        12.48               156

WIND RIVER BASIN AVG.     12.95               128
  DUBOIS                   6.83               126
  LANDER AIRPORT          17.71               198
  RIVERTON AIRPORT        10.30               178
  RIVERTON (DOWNTOWN)     11.25               221

UPPER PLATTE BASIN AVG.   11.23               128
  JEFFREY CITY             9.29               140
-------------------------------------------------
STATEWIDE AVERAGE         11.96               114

--------------------------------------------
| STATION`S DROUGHT INTENSITY (LEFT COLUMN):|
| 3 - LOCATION IN EXTREME DROUGHT/D3/       |
| 2 - LOCATION IN SEVERE DROUGHT /D2/       |
| 1 - LOCATION IN MODERATE DROUGHT /D1/     |
| 0 - LOCATION ABNORMALLY DRY /D0/          |
|   - NONE                                  |
|                                           |
| (M) MISSING PRECIPITATION DATA IN RECORD  |
--------------------------------------------

PRECIPITATION/TEMPERATURE OUTLOOKS...

THE OUTLOOK FOR JULY SHOWS ABOVE NORMAL TEMPERATURES ARE FAVORED
ACROSS ALL OF WYOMING WITH THE GREATEST CHANCE ACROSS SOUTHWEST
WYOMING. BELOW NORMAL PRECIPITATION IS FAVORED ACROSS THE EXTREME
NORTHWEST CORNER OF WYOMING. THE REST OF WYOMING HAS EQUAL
CHANCES FOR ABOVE...BELOW OR NORMAL PRECIPITATION (A WEAK CLIMATE
SIGNAL).

THE THREE MONTH OUTLOOK FOR JULY...AUGUST AND SEPTEMBER LIKEWISE
SHOWS ABOVE NORMAL TEMPERATURES ARE FAVORED ACROSS ALL OF WYOMING.
THE GREATEST CHANCE OF ABOVE NORMAL TEMPERATURES ARE WEST OF THE
CONTINENTAL DIVIDE. BELOW NORMAL PRECIPITATION IS FAVORED
ACROSS THE EXTREME NORTHWEST CORNER OF WYOMING THROUGH SEPTEMBER.
THE REST OF WYOMING HAS EQUAL CHANCES FOR ABOVE...BELOW OR NORMAL
PRECIPITATION (A WEAK CLIMATE SIGNAL).

THE SEASONAL DROUGHT OUTLOOK SHOWED DROUGHT CONDITIONS WERE LIKELY
TO PERSIST ACROSS THE BIGHORN RANGE AND THE NORTHERN BIGHORN BASIN
THROUGH THE END OF SEPTEMBER. THERE WERE NO AREAS OF NEW DROUGHT
DEVELOPMENT FORECAST IN WYOMING THROUGH THE END OF SEPTEMBER.

LA NINA CONDITIONS ARE FAVORED TO DEVELOP IN DURING THE SUMMER
AND CONTINUE DURING THE FALL AND WINTER 2016-17. THIS DEVELOPMENT
WILL BRING AN ELEVATED CHANCE OF ABOVE NORMAL PRECIPITATION
ACROSS THE NORTHERN ROCKIES DURING THE LATE FALL AND WINTER
2016-17...INCLUDING THE NORTHWEST CORNER OF WYOMING.

HYDROLOGIC SUMMARY AND OUTLOOK...

RESERVOIR STORAGES ACROSS WYOMING INCREASED TO 120 TO 130 PERCENT
FOR EARLY JUNE.

RESERVOIR DATA FOR JUNE 15TH -

RESERVOIR                  PERCENT FULL

CENTRAL WYOMING
   BOYSEN                     98.2
   BUFFALO BILL               92.7
   BULL LAKE                  97.0
   PATHFINDER                100.0

UPPER GREEN RIVER BASIN
   BIG SANDY                   98.0
   FONTENELLE                  96.0
   FLAMING GORGE               91.0

UPPER SNAKE RIVER BASIN
   GRASSY LAKE                100.0
   JACKSON LAKE                96.0

NEXT ISSUANCE DATE...

THIS PRODUCT WILL BE UPDATED ON JULY 15 2016 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 /USE LOWER CASE LETTERS/...

TO REPORT EFFECTS OF THE DROUGHT IN YOUR AREA...PLEASE GO TO THE
DROUGHT IMPACT REPORTER AT...

HTTP://DROUGHTREPORTER.UNL.EDU/

...AND CLICK ON SUBMIT A REPORT.

INFORMATION FOR THE MEDIA MAY BE FOUND AT...

HTTP://DROUGHT.UNL.EDU/NEWSOUTREACH/INFORMATIONFORMEDIA.ASPX

NWS RIVERTON DROUGHT PAGE...
HTTP://WWW.WEATHER.GOV/RIW/DROUGHT

WIND RIVER INDIAN RESERVATION AND SURROUNDING AREA CLIMATE AND
DROUGHT SUMMARIES...

HTTP://REVAMPCLIMATE.COLOSTATE.EDU/REVAMP/PROJECT/WIND-RIVER-
DROUGHT-PREPAREDNESS

USGS WYOMING DROUGHT WATCH...
HTTP://WY.WATER.USGS.GOV/PROJECTS/DROUGHT/

U.S. DROUGHT MONITOR...HTTP://WWW.DROUGHT.GOV

NOAA DROUGHT PAGE...HTTP://WWW.DROUGHT.NOAA.GOV

CLIMATE PREDICTION CENTER /CPC/...HTTP://WWW.CPC.NCEP.NOAA.GOV

ADDITIONAL RIVER AND RESERVOIR INFORMATION...

NWS ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/...
HTTP://WWW.WATER.GOV/AHPS2/INDEX.PHP?WFO=RIW

NRCS WYOMING...HTTP://WWW.WY.NRCS.USDA.GOV

USGS...HTTP://WATER.USGS.GOV/

USBR...HTTP://WWW.USBR.GOV/

WATER RESOURCE DATA SYSTEM (WRDS)...HTTP://WWW.WRDS.UWYO.EDU

ACKNOWLEDGMENTS...

THE DROUGHT MONITOR IS A MULTI-AGENCY EFFORT INVOLVING NOAA/S
NATIONAL WEATHER SERVICE AND NATIONAL CLIMATIC DATA CENTER...THE
USDA...STATE AND REGIONAL CENTER CLIMATOLOGISTS AND THE NATIONAL
DROUGHT MITIGATION CENTER. INFORMATION FOR THIS STATEMENT HAS BEEN
GATHERED FROM NWS AND FAA OBSERVATION SITES...STATE COOPERATIVE
EXTENSION SERVICES...THE USDA...USACE AND USGS.

QUESTIONS OR COMMENTS...

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

ARTHUR MEUNIER
CLIMATE/DROUGHT FOCAL POINT
NATIONAL WEATHER SERVICE
12744 WEST US HIGHWAY 26
RIVERTON, WY  82501
TELEPHONE...307-857-3898
............800-211-1448
EMAIL...ARTHUR.MEUNIER@NOAA.GOV

$$



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