Drought Information Statement
Issued by NWS Riverton, WY

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000
AXUS75 KRIW 201138
DGTRIW
WYC003-013-017-019-023-025-029-035-037-039-043-221145-

DROUGHT INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
538 AM MDT SUN MAR 20 2016

...MODERATE TO SEVERE DROUGHT CONDITIONS DEVELOPED DURING THE WINTER
ACROSS PORTIONS OF NORTH CENTRAL WYOMING...

SYNOPSIS...

MODERATE /D1/ AND SEVERE /D2/ DROUGHT CONDITIONS DEVELOPED OVER
PORTIONS OF NORTH CENTRAL WYOMING INTO THE WIND RIVER BASIN SINCE
DECEMBER 2015. SEVERE DROUGHT CONDITIONS DEVELOPED ACROSS THE
BIGHORN MOUNTAINS WHERE THERE WAS ONLY 50-75 PERCENT OF AVERAGE
SNOWPACK OVER MOST OF THE RANGE THROUGH MARCH 19TH. NORTH AND
CENTRAL AREAS OF WYOMING HAD A VERY WARM WINTER OVERALL WITH MOST
STATIONS REPORTING BELOW NORMAL PRECIPITATION FOR THE OCTOBER 2015
THROUGH FEBRUARY 2016 PERIOD...OR THE CURRENT WATER YEAR.

SUMMARY OF IMPACTS...

RIVER AND STREAMFLOW CONDITIONS.

BELOW NORMAL SNOWMELT STREAMFLOW VOLUMES (80 TO 85 PERCENT) ARE
EXPECTED ACROSS ALL MAJOR BASINS ACROSS WYOMING. THE
SWEETWATER...POWDER AND TONGUE RIVER BASINS ARE FORECASTED TO HAVE
MUCH BELOW NORMAL STREAMFLOW VOLUMES DURING THIS UPCOMING SNOWMELT
SEASON. RESERVOIR STORAGES ACROSS WYOMING REMAINED ABOVE AVERAGE
AT 110 TO 120 PERCENT FOR MARCH.

FIRE WEATHER IMPACTS...

FUELS WERE CRITICALLY DRY ACROSS THE LOWER ELEVATIONS OF THE BIGHORN
BASIN...EASTERN JOHNSON COUNTY AND NATRONA COUNTY...WITH THE
POTENTIAL FOR LARGE FIRE GROWTH WHEN FIRE WEATHER CONDITIONS
BECOME ELEVATED. SEVERAL GRASS FIRES HAVE ALREADY BEEN OBSERVED
IN EASTERN JOHNSON COUNTY IN MARCH.

CLIMATE SUMMARY...

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

LOCATION               PRECIPITATION       % AVERAGE
AND DROUGHT            (INCHES)            (1981-2000
CONDITION              OCT 2015-FEB 2016    NORMALS)
--------               -----------------   ---------

AIRPORTS

0 BIG PINEY                1.41                83
1 BUFFALO                  1.84                70
0 CASPER                   4.16               121
0 EVANSTON                 1.31                33
1 GREYBULL                 0.61                38
0 LANDER                   3.48                94
0 RIVERTON                 2.09                94
0 ROCK SPRINGS             0.58                21
1 SHERIDAN                 3.60                95
1 WORLAND                  1.32                78

COOPERATIVE OBSERVER STATIONS

  AFTON                    5.38                79
0 CODY                     2.96               125
0 DUBOIS                   2.38               104
0 GREEN RIVER              3.98               164
0 JEFFREY CITY             2.07                78
0 KAYCEE                   1.75                68
  MOOSE                   11.83               106
  OLD FAITHFUL             9.19                82
0 POWELL FIELD STATION     1.17                97
0 RIVERTON (DOWNTOWN)      2.14               101
0 THERMOPOLIS              2.97                89

--------------------------------------------
| 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...

BOTH THE 30 DAY (APRIL) AND 90 DAY (APRIL-JUNE) OUTLOOKS SHOWED AN ELEVATED
CHANCE OF ABOVE NORMAL TEMPERATURES ACROSS WYOMING...WITH THE
GREATEST CHANCE ACROSS WESTERN WYOMING. BOTH THE 30 DAY AND 90 DAY
PRECIPITATION OUTLOOKS SHOWED AN ELEVATED CHANCE OF ABOVE NORMAL
PRECIPITATION ACROSS MOST OF WYOMING...EXCEPT THE NORTHEAST CORNER
WHERE THERE WAS NO CLEAR CLIMATE SIGNAL.

THE SEASONAL DROUGHT OUTLOOK SHOWED EITHER IMPROVEMENT OR REMOVAL
OF DROUGHT CONDITIONS BY THE END OF JUNE ACROSS NORTH CENTRAL
WYOMING. THERE WERE NO AREAS OF NEW DROUGHT DEVELOPMENT FORECAST
IN WYOMING THROUGH THE END OF JUNE.

HYDROLOGIC SUMMARY AND OUTLOOK...

SNOWPACK DATA ON MARCH 19TH-
DRAINAGE BASIN                    SNOW WATER EQUIVALENT (SWE)
                                  PERCENT OF MEDIAN
--------------                    ---------------------------
SNAKE RIVER                                98
MADISON                                    91
YELLOWSTONE                                88
WIND RIVER                                 80
BIGHORN BASIN                              73
SHOSHONE RIVER                             91
POWDER                                     68
TONGUE                                     54
CHEYENNE                                   57
UPPER PLATTE                               97
SWEETWATER                                 72
LOWER NORTH PLATTE                         84
LARAMIE                                   113
SOUTH PLATTE                              115
LITTLE SNAKE RIVER                         99
UPPER GREEN                               100
LOWER GREEN                               101
UPPER BEAR                                 97
----------------------                    ----


RESERVOIR DATA FOR MARCH 19TH -
RESERVOIR                 PERCENT FULL

CENTRAL WYOMING
BOYSEN                      79.4
BUFFALO BILL                66.5
BULL LAKE                   46.5
PATHFINDER                  79.5

UPPER GREEN RIVER BASIN
BIG SANDY                   55.0
FONTENELLE                  42.0
FLAMING GORGE               84.0

UPPER SNAKE RIVER BASIN
GRASSY LAKE                 88.0
JACKSON LAKE                67.0

NEXT ISSUANCE DATE...

THIS PRODUCT WILL BE UPDATED ON APRIL 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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