Flood Potential Outlook
Issued by NWS Albany, NY

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Winter/Spring Flood Potential Outlook
National Weather Service Albany NY
910 AM EST Fri Apr 3 2020

...Flood threat is near to below normal for this time of year...

Spring flood threat remains near normal for locations with snowpack
left to melt including the western Adirondacks, Mohawk Valley, Lake
George-Saratoga region and Greater Capital District of New York as
well as southwest Vermont; elsewhere the threat is below normal.

A map of the flood potential outlook can be found at:
http://www.weather.gov/nerfc/springfloodpotential This map does not
address the potential for ice jam flooding.

This is the seventh in a series of hydrologic outlooks issued by the
National Weather Service every two weeks...which refers to the
potential for flooding across eastern New York State, southern
Vermont, Berkshire County Massachusetts and Litchfield County
Connecticut. The major river basins in this area are the Hudson,
Mohawk and Housatonic.

This outlook is valid for the two-week period from April 3rd through
the 16th.

...OBSERVED SNOW DEPTHS AND WATER EQUIVALENTS

Snow depth across the majority of the outlook area is nil to patchy
enough to be considered hydrologically insignificant. Notable snow
cover remaining in the outlook area is in the highest terrain of the
western Adirondacks of New York and the southern Green Mountains of
Vermont. With many snow surveys concluded, data is more sparse than
usual for this time of year, however it appears that some peak
locations still have on the order of 4 to 7 inches of snow, with
liquid equivalents of one to one and a half inches. This is well
below normal snowpack for this time of year.

...STREAMFLOW AND SOIL MOISTURE CONDITIONS...

According to U.S. Geological Survey (USGS) streamgages, 28 day
streamflow averages across western New England and eastern New York
have decreased since the last outlook issuance, with streamflow now
in the normal to below normal range.

...RIVER ICE CONDITIONS...

The threat for ice jams has passed for the year.

...WATER SUPPLY...

New York City Department of Environmental Protection (NYCDEP) water
supply reservoirs are at 98.4 percent of capacity, which is 2.3
percent above normal storage capacity.

Hudson River Black River Regulating District reservoir levels have
risen since the last outlook due to snow melt inflow. Current levels
in the upper Hudson and Sacandaga watershed are nearly two feet
above normal at Indian Lake and 10 feet above normal at the Great
Sacandaga Lake. In the Black River watershed, all three reservoirs
are within half a foot of normal.

...SUMMARY...

Spring flood threat remains near normal for locations with snowpack
left to melt including the western Adirondacks, Mohawk Valley, Lake
George-Saratoga region and Greater Capital District of New York as
well as southwest Vermont; elsewhere the threat is below
normal.Extended hydrologic information will be included in the
Hazardous Weather Outlook when necessary at
forecast.weather.gov/product.php?site=NWS&product=HWO&issuedby=ALY

Observed and 3 day forecast river information can be found on our
web page at www.weather.gov/albany. Three to seven day ensemble
forecast information can be found at www.weather.gov/erh/mmefs.

Unless conditions change dramatically, this will be the final
Winter/Spring Flood Outlook for the year. Flooding can happen at any
time of year - stay informed at www.weather.gov/albany and follow us
on Facebook at www.facebook.com/NWSAlbany and on Twitter @NWSAlbany

$$

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