Flood Potential Outlook
Issued by NWS Great Falls, MT
FGUS75 KTFX 092009
WATER SUPPLY OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
209 PM MDT MON JUN 9 2014
...Montana Water Supply Outlook as of June 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 in most
areas, with some areas projected to be well above average. These
forecasts assume near normal moisture and runoff conditions for June
and 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 May weather conditions for Montana
Streamflow forecasts for rivers and sites west of the Continental
Divide provided by the Northwest River Forecast Center - NWRFC - in
Streamflow forecasts for rivers and sites east of the Continental
Divide provided by the Missouri Basin River Forecast Center -
MBRFC - in Pleasant Hill, Missouri.
Current day snow water equivalent information from the National
Operational Hydrologic Remote Sensing Center - NOHRSC
Current day percent of normal snow water equivalent by basin.
May 2014 percent of normal precipitation
Calendar Year 2014 percent of normal precipitation
Water Year 2014 percent of normal precipitation
Preliminary map of percent of normal precipitation for the current
month provided by the Western Region Climate Center
Reservoir storage provided by NRCS - percent of capacity, percent of
average and percent of last year
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 June 2014 provided by NRCS
Current climate outlook issued by the Climate Prediction Center - CPC
This is the final Water Supply Outlook for Montana for 2014. Issuance
of this product will resume in January for the 2015 season.