Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 222302
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
502 PM MDT THU SEP 22 2016

WYZ001-222330-
YELLOWSTONE NATIONAL PARK-
502 PM MDT THU SEP 22 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PARK COUNTY UNTIL
530 PM MDT...

AT 500 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG
THUNDERSTORM...10 MILES SOUTH OF MAMMOTH...MOVING NORTH AT 40 MPH.

HALF INCH HAIL...WINDS IN EXCESS OF 40 MPH...BRIEF HEAVY RAINFALL
AND FREQUENT LIGHTNING ARE EXPECTED WITH THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  WILLOW PARK AROUND 505 PM MDT.
  OSPREY FALLS AND SWAN LAKE AROUND 510 PM MDT.
  BLACKTAIL POND AND PHANTOM LAKE AROUND 515 PM MDT.
  MAMMOTH AROUND 520 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE LAVA CREEK CAMPGROUNDS
AND INDIAN CREEK CAMPGROUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING OR EVEN MUD SLIDES IN STEEP TERRAIN. DO NOT
DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4499 11070 4499 11050 4465 11054 4464 11079
      4500 11083 4500 11077
TIME...MOT...LOC 2300Z 179DEG 34KT 4481 11066

$$

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