Flood Advisory

Flood Advisory
National Weather Service Riverton WY
941 AM MST FRI FEB 24 2017

WYC003-251630-
/O.NEW.KRIW.FA.Y.0012.170224T1641Z-170225T1630Z/
/00000.N.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Big Horn-
941 AM MST FRI FEB 24 2017

The National Weather Service in Riverton has issued a

* Hydrologic Advisory for...
  An Ice Jam in...
  Central Big Horn County in central Wyoming...

* Until 930 AM MST Saturday

* At 926 AM MST, Big Horn County emergency management reported there
  were still 2 large ice jams along the Big Horn River that may
  cause additional flooding. One ice jam was between Basin and
  Greybull. This ice jam has moved downstream about an half mile
  since Thursday night.  The other major ice jam is located
  downstream of Greybull near the Sheep Mountain area and on Georgia
  Pacific property. No major movement or changes have been
  reported with that ice jam.

* There are also 2 smaller ice jams that are just upstream and
  downstream of Greybull. These jams are not causing any significant
  flooding in and around Greybull.

* Colder temperatures through early next week should inhibit any
  significant movement of current ice jams. There also should be no
  significant additional ice accumulation on the Big Horn River with
  the expected temperatures through early next week.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

River ice is very unpredictable, and may move and jam with little
notice. Any ice jam can cause flooding, as the ice dams the river,
causing rapid increases in river levels in a short period of time.
People living near the Big Horn River should monitor the situation
closely and be ready to move to higher ground if flooding occurs.

&&

LAT...LON 4457 10805 4450 10802 4442 10800 4442 10808
      4448 10808 4453 10811 4457 10815 4463 10816
      4471 10820 4477 10822 4475 10813 4469 10810
      4463 10810

$$

Fahey


Hydrologic Outlook

Hydrologic Outlook
WYC003-250450-
Hydrologic Outlook
National Weather Service Riverton WY
950 AM MST THU FEB 23 2017

...Colder temperatures through early next week will decrease flooding due
to ice jams along the Big Horn River...

High temperatures along the Big Horn River are expected to be into the upper
20s to lower 30s from Friday through Tuesday of next week. Low temperatures along
the the Big Horn River are expected to be between 8 to 20 degrees from Friday
through Tuesday of next week.

Flooding from ice jamming expected to decrease through early next week with
the expected colder temperatures. Also, no significant new ice is expected to
form on the the Big Horn River with forecasted low temperatures next week.

People who live next to the Big Horn River should still be vigilant of the
possibility of flooding due to ice jams.  Ice jams are very unpredictable
and can occur very quickly with little or no notice. Move to higher ground
if flooding is occurring due to ice jams.

Graphical forecasts are available at: http://water.weather.gov/ahps2/index.php?wfo=riw
Visit weather.gov/riverton and select the rivers & lakes tab for graphical
forecasts and additional information.

$$
jtfahey