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000
WWUS85 KRIW 250150
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
750 PM MDT TUE MAY 24 2016

WYZ011-250215-
SOUTHEAST JOHNSON COUNTY-
750 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL JOHNSON COUNTY UNTIL
815 PM MDT...

AT 750 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
FORT RENO HISTORICAL SITE...WHICH IS 21 MILES NORTHEAST OF KAYCEE...
MOVING NORTHEAST AT 35 MPH.

NICKEL SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF EAST CENTRAL
JOHNSON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4371 10623 4384 10640 4417 10601 4384 10601
TIME...MOT...LOC 0150Z 227DEG 31KT 4384 10624

$$

BRAUN





000
WWUS85 KRIW 250135
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
735 PM MDT TUE MAY 24 2016

WYZ004-006-008-009-250200-
NORTH BIG HORN BASIN-SOUTHEAST BIG HORN BASIN-BIGHORN MOUNTAINS
SOUTHEAST-BIGHORN MOUNTAINS WEST-
735 PM MDT TUE MAY 24 2016

...A LINE OF SHOWERS WILL AFFECT NORTHEASTERN WASHAKIE AND
SOUTHEASTERN BIG HORN COUNTIES...

AT 733 PM MDT...A LINE OF SHOWERS WAS ALONG A LINE EXTENDING FROM 9
MILES SOUTHWEST OF MANDERSON TO MEDICINE LODGE ARCHAEOLOGICAL SITE TO
NEAR TENSLEEP CANYON...AND MOVING NORTHEAST AT 45 MPH.

WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE SHOWERS.

LOCATIONS IMPACTED INCLUDE...
BASIN...MANDERSON...SHELL...MEDICINE LODGE ARCHAEOLOGICAL SITE...
PAINTROCK CANYON...MEADOWLARK LAKE...DEER HAVEN LODGE...
PAINT ROCK LODGE...MEADOWLARK LODGE...AND WEST TENSLEEP CAMPGROUND.

LAT...LON 4461 10745 4461 10743 4460 10742 4460 10739
      4456 10737 4456 10723 4397 10720 4425 10760
      4412 10824 4453 10794 4462 10748
TIME...MOT...LOC 0133Z 212DEG 39KT 4418 10812 4429 10757 4407 10724
$$

BRAUN





000
WWUS85 KRIW 250058
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
658 PM MDT TUE MAY 24 2016

WYZ011-250145-
SOUTHEAST JOHNSON COUNTY-
658 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN JOHNSON COUNTY UNTIL
745 PM MDT...

AT 658 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7
MILES SOUTH OF KAYCEE...MOVING NORTHEAST AT 40 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  KAYCEE AROUND 710 PM MDT.
  FORT RENO HISTORICAL SITE AROUND 735 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE SUSSEX...KAYCEE BRANCH
LIBRARY...KAYCEE ELEMENTARY SCHOOL...POWDER RIVER CABINS AND KAYCEE
HIGH SCHOOL.

THIS INCLUDES INTERSTATE 25 BETWEEN MILE MARKERS 241 AND 258.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4349 10661 4349 10667 4360 10682 4408 10627
      4389 10601 4388 10601
TIME...MOT...LOC 0058Z 223DEG 36KT 4360 10666

$$

BRAUN





000
WWUS85 KRIW 250053
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
653 PM MDT TUE MAY 24 2016

WYZ004-006-011-250130-
NORTH BIG HORN BASIN-SOUTHEAST BIG HORN BASIN-SOUTHEAST JOHNSON
COUNTY-
653 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN WASHAKIE...SOUTHEASTERN
BIG HORN AND CENTRAL JOHNSON COUNTIES UNTIL 730 PM MDT...

AT 653 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES SOUTHEAST OF
WORLAND MUNICIPAL AIRPORT TO 8 MILES NORTHWEST OF BIG TRAILS TO 16
MILES NORTHEAST OF COTTONWOOD PASS...AND MOVING NORTHEAST AT 40 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THESE STORMS.

STRONG THUNDERSTORMS WILL BE NEAR...
  TENSLEEP CANYON AROUND 715 PM MDT.
  MAYOWORTH AROUND 730 PM MDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE WIGWAM FISH REARING
STATION.

THIS INCLUDES INTERSTATE 25 NEAR MILE MARKER 266.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4377 10682 4389 10688 4394 10721 4381 10730
      4372 10725 4376 10684 4375 10694 4369 10695
      4373 10696 4371 10726 4361 10739 4379 10752
      4383 10804 4429 10752 4395 10727 4389 10680
      4390 10681 4414 10682 4414 10681 4388 10663
TIME...MOT...LOC 0053Z 223DEG 36KT 4388 10788 4384 10746 4360 10728

$$

BRAUN





000
WWUS85 KRIW 250040
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
640 PM MDT TUE MAY 24 2016

WYZ009-011-020-250130-
SOUTHEAST JOHNSON COUNTY-NATRONA COUNTY LOWER ELEVATIONS-BIGHORN
MOUNTAINS SOUTHEAST-
640 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL NATRONA AND
SOUTHEASTERN JOHNSON COUNTIES UNTIL 730 PM MDT...

AT 639 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 11 MILES WEST OF HOLE IN
THE WALL TO NEAR RED WALL...AND MOVING NORTHEAST AT 30 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THESE STORMS.

STRONG THUNDERSTORMS WILL BE NEAR...
  HOLE IN THE WALL AROUND 650 PM MDT.
  MAYOWORTH AROUND 715 PM MDT.
  KAYCEE AROUND 720 PM MDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE WILLOW CREEK
SCHOOL...CHAMPION RIDGE PUMPED STORAGE HYDROELECTRIC POWER PLANT...
KAYCEE ELEMENTARY SCHOOL...BARNUM...SUSSEX...KAYCEE BRANCH LIBRARY...
POWDER RIVER CABINS AND KAYCEE HIGH SCHOOL.

THIS INCLUDES INTERSTATE 25 BETWEEN MILE MARKERS 235 AND 276.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4411 10673 4364 10616 4332 10675 4362 10713
TIME...MOT...LOC 0039Z 217DEG 28KT 4361 10703 4341 10678

$$

BRAUN





000
WWUS85 KRIW 250021
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
621 PM MDT TUE MAY 24 2016

WYZ009-011-250100-
SOUTHEAST JOHNSON COUNTY-BIGHORN MOUNTAINS SOUTHEAST-
621 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL JOHNSON COUNTY
UNTIL 700 PM MDT...

AT 621 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES NORTHWEST OF RED WALL...WHICH IS 25 MILES SOUTHWEST OF
KAYCEE...MOVING NORTHEAST AT 30 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  MAYOWORTH AROUND 700 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE BARNUM...CHAMPION
RIDGE PUMPED STORAGE HYDROELECTRIC POWER PLANT AND POWDER RIVER
CABINS.

THIS INCLUDES INTERSTATE 25 BETWEEN MILE MARKERS 256 AND 260.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4349 10695 4353 10711 4393 10688 4378 10657
TIME...MOT...LOC 0021Z 213DEG 28KT 4350 10707

$$

BRAUN





000
WWUS85 KRIW 250010
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
610 PM MDT TUE MAY 24 2016

WYZ006>008-020-250100-
OWL CREEK AND BRIDGER MOUNTAINS-SOUTHEAST BIG HORN BASIN-NATRONA
COUNTY LOWER ELEVATIONS-BIGHORN MOUNTAINS WEST-
610 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN NATRONA...
SOUTHEASTERN WASHAKIE AND SOUTHEASTERN HOT SPRINGS COUNTIES UNTIL 700
PM MDT...

AT 610 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR COTTONWOOD PASS TO
NEAR HILAND...AND MOVING NORTHEAST AT 30 MPH.

PEA SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THESE STORMS.

STRONG THUNDERSTORMS WILL BE NEAR...
  COTTONWOOD PASS AROUND 615 PM MDT.
  BIG TRAILS AROUND 700 PM MDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE ARMINTO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4330 10669 4310 10732 4328 10752 4337 10753
      4343 10763 4343 10768 4347 10773 4359 10764
      4359 10759 4365 10759 4389 10741 4366 10713
      4361 10720 4353 10724 4324 10730 4321 10718
      4321 10710 4330 10705 4341 10691 4343 10685
TIME...MOT...LOC 0010Z 214DEG 28KT 4345 10764 4320 10736

$$

BRAUN





000
WWUS85 KRIW 242351
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
551 PM MDT TUE MAY 24 2016

WYZ004>007-250030-
SOUTHWEST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS-NORTH BIG
HORN BASIN-SOUTHEAST BIG HORN BASIN-
551 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WASHAKIE...
SOUTHEASTERN HOT SPRINGS AND SOUTHERN BIG HORN COUNTIES UNTIL 630 PM
MDT...

AT 551 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR KIRBY TO NEAR HOT
SPRINGS STATE PARK...AND MOVING NORTHEAST AT 30 MPH.

HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

STRONG THUNDERSTORMS WILL BE NEAR...
  KIRBY AND WINCHESTER AROUND 555 PM MDT.
  WYOMING BOYS SCHOOL AROUND 615 PM MDT.
  WORLAND MUNICIPAL AIRPORT AROUND 620 PM MDT.
  WORLAND AROUND 625 PM MDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE EASTSIDE ELEMENTARY
SCHOOL...WASHAKIE COUNTY FAIRGROUNDS...THERMOPOLIS HOT SPRINGS COUNTY
MEMORIAL HOSPITAL...WASHAKIE COUNTY LIBRARY WORLAND BRANCH...WORLAND
NUMBER 21 NATURAL GAS PROCESSING PLANT...WORLAND WASHAKIE MEDICAL
CENTER...WORLAND HIGH SCHOOL...WORLAND MIDDLE SCHOOL...WORLAND
NATURAL GAS PROCESSING PLANT AND WEST SIDE ELEMENTARY SCHOOL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4429 10802 4389 10762 4353 10815 4381 10827
TIME...MOT...LOC 2351Z 205DEG 27KT 4381 10814 4366 10812

$$

BRAUN





000
WWUS85 KRIW 242312
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
512 PM MDT TUE MAY 24 2016

WYZ014-015-017>019-026-250000-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-WIND RIVER MOUNTAINS WEST-WIND
RIVER BASIN-UPPER GREEN RIVER BASIN-WIND RIVER MOUNTAINS EAST-LANDER
FOOTHILLS-
512 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SUBLETTE...NORTH
CENTRAL SWEETWATER AND SOUTHEASTERN FREMONT COUNTIES UNTIL 600 PM
MDT...

AT 512 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 15 MILES NORTHEAST OF
KILLPECKER DUNE FIELD TO 8 MILES EAST OF OREGON BUTTES TO 22 MILES
SOUTHWEST OF CROOKS GAP...AND MOVING NORTH AT 45 MPH.

WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THESE STORMS.

STRONG THUNDERSTORMS WILL BE NEAR...
  SOUTH PASS CITY AROUND 530 PM MDT.
  RED CANYON...SWEETWATER STATION...CHRISTINA LAKE AND ICE SLOUGH
AROUND 550 PM MDT.
  UPPER SILAS LAKE AROUND 555 PM MDT.
  WORTHEN MEADOWS CAMPGROUND...WIND RIVER PEAK AND WORTHEN MEADOWS
RESERVOIR AROUND 600 PM MDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE MINERS DELIGHT...
FREMONT COUNTY LIBRARY...LANDER GOLF COURSE...BRUCE CAMPGROUND...
LOUIS LAKE RESORT...ATLANTIC CITY...SINKS CANYON CAMPGROUND...
FIDDLERS LAKE CAMPGROUND...POPO AGIE CAMPGROUND AND SOUTH ELEMENTARY
SCHOOL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4216 10919 4281 10920 4291 10860 4267 10777
      4219 10805 4222 10807 4223 10811 4217 10833
      4225 10868
TIME...MOT...LOC 2312Z 185DEG 37KT 4220 10910 4226 10869 4215 10819

$$

BRAUN





000
WWUS85 KRIW 242301
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
501 PM MDT TUE MAY 24 2016

WYZ005-007-008-017-019-020-242345-
SOUTHWEST BIG HORN BASIN-GREEN MOUNTAINS AND RATTLESNAKE RANGE-OWL
CREEK AND BRIDGER MOUNTAINS-WIND RIVER BASIN-NATRONA COUNTY LOWER
ELEVATIONS-BIGHORN MOUNTAINS WEST-
501 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL FREMONT...WEST
CENTRAL NATRONA AND SOUTHEASTERN HOT SPRINGS COUNTIES UNTIL 545 PM
MDT...

AT 501 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 11 MILES NORTHWEST OF
HIDDEN VALLEY TO 11 MILES WEST OF GAS HILLS...AND MOVING NORTHEAST AT
45 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THESE STORMS.

STRONG THUNDERSTORMS WILL BE NEAR...
  GAS HILLS AROUND 515 PM MDT.
  BOYSEN STATE PARK HEADQUARTERS AND CASTLE GARDENS AROUND 520 PM
MDT.
  ERVAY AROUND 535 PM MDT.
  WALTMAN AND WALTMAN REST AREA AROUND 545 PM MDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE BOYSEN U S BUREAU OF
RECLAMATION POWER PLANT...BOYSEN STATE PARK...SHOSHONI MUNICIPAL
AIRPORT...ARMINTO AND BONNEVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4269 10784 4331 10849 4371 10774 4368 10771
      4365 10771 4365 10768 4328 10729 4324 10730
      4322 10724 4297 10698
TIME...MOT...LOC 2301Z 240DEG 38KT 4329 10837 4278 10784

$$

BRAUN





000
WWUS85 KRIW 242251
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
451 PM MDT TUE MAY 24 2016

WYZ010-011-242330-
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
451 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN JOHNSON COUNTY UNTIL
530 PM MDT...

AT 451 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
KAYCEE...MOVING NORTHEAST AT 40 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTHEASTERN
JOHNSON COUNTY.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 25 BETWEEN MILE MARKERS 255 AND 264.
 INTERSTATE 90 BETWEEN MILE MARKERS 78 AND 84.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4365 10649 4375 10670 4424 10634 4412 10601
      4399 10601
TIME...MOT...LOC 2251Z 212DEG 35KT 4377 10655

$$

BRAUN





000
WWUS85 KRIW 242235
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
435 PM MDT TUE MAY 24 2016

WYZ001-242315-
YELLOWSTONE NATIONAL PARK-
435 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN TETON AND
NORTHWESTERN PARK COUNTIES UNTIL 515 PM MDT...

AT 435 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 11
MILES SOUTHWEST OF KEPLER CASCADES...WHICH IS 11 MILES SOUTHWEST OF
OLD FAITHFUL...MOVING NORTHEAST AT 45 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  OLD FAITHFUL...KEPLER CASCADES...SCAUP LAKE...MYSTIC FALLS AND
SHOSHONE LAKE AROUND 450 PM MDT.
  CRAIG PASS...LOWER BASIN LAKE...FOUNTAIN PAINT POT...FAIRY FALLS
AND GOOSE LAKE AROUND 455 PM MDT.
  GIBBON HILL AROUND 510 PM MDT.
  CANYON...UPPER FALLS...LOWER FALLS...ICE LAKE...VIRGINIA CASCADE...
WOLF LAKE...GREBE LAKE...MUD VOLCANO AND CASCADE LAKE AROUND 515 PM
MDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE LAKE LODGE...LAKE
NORTHWESTERN CORPORATION POWER PLANT AND OLD FAITHFUL NORTHWESTERN
CORPORATION POWER PLANT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4488 11070 4464 11021 4419 11089 4427 11105
      4435 11105
TIME...MOT...LOC 2235Z 217DEG 40KT 4431 11093

$$

BRAUN





000
WWUS85 KRIW 242207
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
407 PM MDT TUE MAY 24 2016

WYZ024-026-027-242245-
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-SALT RIVER AND WYOMING
RANGES-
407 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL SUBLETTE...
NORTHWESTERN SWEETWATER AND SOUTHEASTERN LINCOLN COUNTIES UNTIL 445
PM MDT...

AT 407 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES EAST OF LAKE VIVA NAUGHTON...WHICH IS 12 MILES NORTH OF
KEMMERER...MOVING NORTHEAST AT 55 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  FONTENELLE RECREATION AREA AND NAMES HILL AROUND 430 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE FONTENELL EU S BUREAU
OF RECLAMATION POWER PLANT.

LAT...LON 4250 11003 4209 10954 4182 11051 4198 11063
TIME...MOT...LOC 2207Z 240DEG 49KT 4194 11048

$$

BRAUN





000
WWUS85 KRIW 242152
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
352 PM MDT TUE MAY 24 2016

WYZ015-017>019-242230-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-WIND RIVER BASIN-WIND RIVER
MOUNTAINS EAST-LANDER FOOTHILLS-
352 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FREMONT COUNTY UNTIL
430 PM MDT...

AT 350 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF THUNDERSTORMS
ALONG A LINE EXTENDING FROM 10 MILES SOUTHEAST OF HUDSON TO NEAR
SINKS CANYON STATE PARK...AND MOVING NORTHEAST AT 25 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THESE STORMS.

STRONG THUNDERSTORMS WILL BE NEAR...
  MILFORD AROUND 400 PM MDT.
  HUDSON AROUND 425 PM MDT.
  RIVERTON AND ARAPAHOE AROUND 430 PM MDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE BEAVER CREEK
GASOLINE PLANT...RIVERTON REGIONAL AIRPORT...LANDER GOLF
COURSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY HEAVY RAINFALL IS EXPECTED WITH THESE STORMS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4326 10791 4303 10884 4255 10883 4261 10836
TIME...MOT...LOC 2150Z 218DEG 20KT 4281 10842 4276 10871

$$

LIPSON





000
WWUS85 KRIW 242112
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
312 PM MDT TUE MAY 24 2016

WYZ028>030-242200-
EAST SWEETWATER COUNTY-FLAMING GORGE-ROCK SPRINGS AND GREEN RIVER-
312 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL SWEETWATER COUNTY
UNTIL 400 PM MDT...

AT 310 PM MDT...DOPPLER RADAR WAS TRACKING A THUNDERSTORM 15 MILES
SOUTH OF ROCK SPRINGS...MOVING NORTHEAST AT 40 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF SOUTH CENTRAL
SWEETWATER COUNTY...INCLUDING THE FOLLOWING LOCATIONS...ROCK SPRINGS
SWEETWATER COUNTY AIRPORT.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 108 AND 121.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY HEAVY RAINFALL AND SMALL HAIL IS POSSIBLE WITH THIS STORM.

OCCASIONAL CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4126 10930 4144 10947 4171 10897 4139 10874
TIME...MOT...LOC 2110Z 245DEG 36KT 4137 10924

$$

LIPSON





000
WWUS85 KRIW 241927
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
127 PM MDT TUE MAY 24 2016

WYZ024>026-242015-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER GREEN RIVER BASIN-SALT RIVER
AND WYOMING RANGES-
127 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SUBLETTE AND CENTRAL
LINCOLN COUNTIES UNTIL 215 PM MDT...

AT 126 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9
MILES EAST OF MIDDLE PINEY SUMMER HOME AREA...WHICH IS 12 MILES WEST
OF BIG PINEY...MOVING NORTHEAST AT 30 MPH.

PEA SIZE HAIL AND WINDS IN EXCESS OF 45 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  DANIEL AROUND 215 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE PINEDALE RALPH WENZ
FIELD...PINEDALE HIGH SCHOOL...RENDEZVOUS MEADOWS GOLF COURSE...
PINEDALE MIDDLE SCHOOL...BIG PINEY HIGH SCHOOL...BIG PINEY ELEMENTARY
SCHOOL...MIDDLE PINEY LAKE CAMPGROUND...BIG PINEY MIDDLE SCHOOL...
SUBLETTE COUNTY LIBRARY AND BIG PINEY MARBLETON AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4312 11038 4273 10954 4272 10954 4271 10950
      4222 11005 4261 11077
TIME...MOT...LOC 1926Z 217DEG 26KT 4258 11035

$$

13





000
WWUS85 KRIW 241903
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
103 PM MDT TUE MAY 24 2016

WYZ026-028-029-241945-
UPPER GREEN RIVER BASIN-FLAMING GORGE-ROCK SPRINGS AND GREEN RIVER-
103 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL SWEETWATER COUNTY
UNTIL 145 PM MDT...

AT 102 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
LITTLE AMERICA...WHICH IS 7 MILES SOUTHEAST OF GRANGER...MOVING
NORTHEAST AT 25 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM ALONG WITH
SMALL HAIL.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF WEST CENTRAL
SWEETWATER COUNTY...INCLUDING THE FOLLOWING LOCATIONS...GRANGER
NATURAL GAS PROCESSING PLANT...GENERAL CHEMICAL CORPORATION POWER
PLANT AND ROLLING GREEN COUNTRY CLUB.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 65 AND 86.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4159 11005 4166 11005 4199 10992 4173 10931
      4141 10972
TIME...MOT...LOC 1902Z 213DEG 20KT 4153 10984

$$

13





000
WWUS85 KRIW 241832
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1232 PM MDT TUE MAY 24 2016

WYZ023-024-027-241915-
SOUTH LINCOLN COUNTY-STAR VALLEY-SALT RIVER AND WYOMING RANGES-
1232 PM MDT TUE MAY 24 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SUBLETTE AND WEST
CENTRAL LINCOLN COUNTIES UNTIL 115 PM MDT...

AT 1230 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES NORTH OF PINE CREEK SKI AREA...WHICH IS 14 MILES NORTHEAST OF
COKEVILLE...MOVING NORTH AT 30 MPH. ANOTHER STRONG THUNDERSTORM WAS
SOUTHEAST OF COKEVILLE MOVING NORTH AROUND 30 MPH.

HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  MOUNT WAGNER AROUND 115 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE HAMS FORK
CAMPGROUND...SMOOT KOA CAMPGROUND AND OSMOND ELEMENTARY SCHOOL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4267 11093 4251 11037 4249 11036 4248 11032
      4239 11030 4201 11057 4223 11103
TIME...MOT...LOC 1830Z 202DEG 24KT 4226 11083

$$

13





000
WWUS85 KRIW 241802
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1202 PM MDT TUE MAY 24 2016

WYZ027-241915-
SOUTH LINCOLN COUNTY-
INCLUDING THE CITIES OF...KEMMERER...COKEVILLE
1202 PM MDT TUE MAY 24 2016

A THUNDERSTORM WITH FREQUENT LIGHTNING...BRIEF HEAVY RAIN...WIND
GUSTS TO 35 MPH AND SMALL HAIL WILL MOVE NORTH ACROSS THE
COKEVILLE AREA BETWEEN NOW AND 1230 PM. TAKE SHELTER INDOORS AS
THIS STORM MOVES NORTH ACROSS THE AREA. MORE THUNDERSTORMS ARE
POSSIBLE THROUGH THE AFTERNOON HOURS.

$$

TEAM RIVERTON





000
WWUS85 KRIW 230253
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
853 PM MDT SUN MAY 22 2016

WYZ017-018-230900-
WIND RIVER BASIN-LANDER FOOTHILLS-
INCLUDING THE CITIES OF...RIVERTON...SHOSHONI...LANDER
853 PM MDT SUN MAY 22 2016

...SOME FROST POSSIBLE IN LOWER RIVER VALLEYS TONIGHT...

CLEARING SKIES AND DIMINISHING WIND WILL RESULT IN TEMPERATURES IN
THE LOWER RIVER VALLEYS IN AND AROUND RIVERTON...LANDER AND
HUDSON...DROPPING TO NEAR FREEZING EARLY MONDAY MORNING WITH SOME
FROST LIKELY. GARDENERS WHO HAVE PLANTS SENSITIVE TO FREEZING
TEMPERATURES SHOULD COVER PLANTS OR BRING THEM INDOORS THIS
EVENING.

$$





000
WWUS85 KRIW 222000
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
200 PM MDT SUN MAY 22 2016

WYZ001-012-013-023-024-222200-
YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS-
JACKSON HOLE-STAR VALLEY-SALT RIVER AND WYOMING RANGES-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL...
JACKSON...AFTON...ALPINE...STAR VALLEY RANCH...THAYNE
200 PM MDT SUN MAY 22 2016

THROUGH 4 PM...SHOWERS AND ISOLATED THUNDERSTORMS ARE CONTINUING
TO DEVELOP AND MOVE THROUGH THE REGION FROM THE SOUTHWEST AT
AROUND 25 MPH. THESE SHOWERS AND STORMS WILL GENERALLY BRING BRIEF
PERIODS OF LIGHT TO MODERATE RAINFALL...WITH SNOW SHOWERS ABOVE
8000 FEET...AND OCCASIONAL LIGHTNING.

$$

WYZ014-019-020-022-025>030-222200-
WIND RIVER MOUNTAINS WEST-GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER GREEN RIVER BASIN-
SOUTH LINCOLN COUNTY-ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-
EAST SWEETWATER COUNTY-
INCLUDING THE CITIES OF...JEFFREY CITY...CASPER...PINEDALE...
LA BARGE...BIG PINEY...FARSON...KEMMERER...COKEVILLE...
ROCK SPRINGS...GREEN RIVER...WAMSUTTER
200 PM MDT SUN MAY 22 2016

THROUGH 4 PM...SHOWERS AND ISOLATED THUNDERSTORMS ARE CONTINUING
TO DEVELOP AND MOVE INTO AND THROUGH THE REGION FROM THE SOUTHWEST
AT AROUND 25 MPH. THESE SHOWERS AND STORMS WILL GENERALLY BRING
BRIEF PERIODS OF LIGHT TO MODERATE RAINFALL WITH THEM...WITH SNOW
SHOWERS ABOVE 8000 FEET. A FEW STRONGER STORMS MAY PRODUCE GUSTY
OUTFLOW WINDS TO 40 MPH...BRIEF HEAVY RAIN...SMALL HAIL AND
OCCASIONAL LIGHTNING.

$$





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