Flood Potential Outlook
Issued by NWS Great Falls, MT

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
000
FGUS75 KTFX 222139
ESFTFX
022139-
WATER SUPPLY OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
339 PM MDT TUE APR 22 2014

...MONTANA WATER SUPPLY OUTLOOK AS OF APRIL 2014...

The Montana Water Supply Forecast is issued by the National Weather
Service Office in Great Falls in cooperation and coordination with
the National Weather Service Office in Missoula.

The outlook for the 2014 summer season projects water supply east and
west of the continental divide to be near to above average. These
forecasts assume near normal moisture and runoff conditions for
April through July and do not account for much below average - 70%
or less - or above average - 100% or more - snowmelt or spring
rains.

Detailed summary of March weather conditions for Montana
http://www.wrh.noaa.gov/tfx/climate/droughtsum/pdfs/montanawx_2014_03.pdf

Streamflow forecasts for rivers and sites west of the Continental
Divide provided by the Northwest River Forecast Center - NWRFC - in
Portland, Oregon.
http://www.nwrfc.noaa.gov/water_supply/ws_report.cgi?Type=STATE&Source=Montana&Wyr=2014

Streamflow forecasts for rivers and sites east of the Continental
Divide provided by the Missouri Basin River Forecast Center -
MBRFC - in Pleasant Hill, Missouri.
http://www.crh.noaa.gov/Image/mbrfc/water_supply/2014/mar/mistrm.gif

SNOWPACK INFORMATION...
Current day snow water equivalent information from the National
Operational Hydrologic Remote Sensing Center - NOHRSC
http://www.nohrsc.noaa.gov/interactive/html/map.html?ql=station&zoom=&loc=43.36+N%2C+115.75+W&var=ssm_swe&dy=2014&dm=2&dd=13&dh=22&snap=1&o9=1&o12=1&o13=1&lbl=m&mode=pan&extents=us&min_x=-116.725&min_y=43.124999999996&max_x=-103.64166666667&max_y=50.483333333329&coord_x=-110.183333333335&coord_y=46.804166666662496&zbox_n=&zbox_s=&zbox_e=&zbox_w=&metric=0&bgvar=dem&shdvar=shading&palette=1&width=800&height=450&nw=800&nh=450&h_o=0&font=0&js=1&uc=0

Current day percent of normal snow water equivalent by basin.
http://www.wcc.nrcs.usda.gov/gis/images/mt_swepctnormal_update.png

PRECIPITATION INFORMATION...
March 2014 percent of normal precipitation
http://www.wrcc.dri.edu/wwdt/images/pon1/mo_cl.png

Calendar Year 2014 percent of normal precipitation
http://www.wrcc.dri.edu/wwdt/images/pon3/mo_cl.png

Water Year 2014 percent of normal precipitation
http://www.wrcc.dri.edu/wwdt/images/pon6/mo_cl.png

Preliminary map of percent of normal precipitation for the current
month provided by the Western Region Climate Center
http://www.wrcc.dri.edu/cgi-bin/anomimage.pl?mon1mPpct.gif


RESERVOIR INFORMATION...
Reservoir storage provided by NRCS - percent of capacity, percent of
average and percent of last year
http://www.wcc.nrcs.usda.gov/cgibin/resv-graph.pl?state=MT


SURFACE WATER SUPPLY INDEX...
The Surface Water Supply Index - SWSI - is a measure of available
surface water availability for the spring and summer months. The
SWSI accounts for mountain snowpack, mountain precipitation,
streamflow, reservoir storage, and soil moisture. SWSI values are
provided by the Natural Resources Conservation Service - NRCS - with
the US Dept. of Agriculture.
SWSI for April 2014 provided by NRCS
http://apps.msl.mt.gov/Geographic_Information/Maps/watersupply/SurfaceWaterSupplyIndex/Default.aspx


CLIMATE OUTLOOK...
Current climate outlook issued by the Climate Prediction Center - CPC
http://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/page2.gif

The next Water Supply Outlook for 2014 will be issued by May 15.

weather.gov/greatfalls

&&




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.