National Weather Summary for Tuesday, February 6, 2018
by David Moran, on Feb 6, 2018 10:41:06 AM
Wintry precipitation will continue from the Plains to the Northeast through Thursday in association with a weak front. Thunderstorms may develop across portions of the Southern Plains into the Lower Mississippi Valley as a cold front moves southward.
- Wintry Precipitation from the Plains through the Northeast through Thursday
- Thunderstorms Tuesday for the Southern Plains and Lower Mississippi Valley
- Snow for the Northern Rockies and High Plains Thursday through Saturday Morning
Wintry Precipitation from the Plains through the Northeast through Thursday
A weak area of low pressure is forecast to move through western Kansas throughout the day on Tuesday, bringing the potential for light to moderate snow. Snowfall totals of 1-2 inches with locally higher amounts in excess of 3 inches are expected. Across eastern Kansas into Iowa, snowfall accumulations of 1-3 inches with locally higher amounts in excess of 4 inches are forecast. For portions of Missouri into southern Illinois, snow accumulations will range 1-2 inches and ice accumulations up to a tenth of an inch are expected. For the Southern Plains across Oklahoma, Arkansas, and north Texas, ice accumulations will range 0.05-0.10 inches. Further east from northern Arkansas and southern Missouri into the Ohio Valley, ice accumulations will range 0.1-0.2 inch with locally higher amounts in excess of a quarter of an inch. Snowfall accumulations will range 1-2 inches with locally higher amounts in excess of 3 inches for portions of Illinois and Indiana through Wednesday morning.
Across much of Ohio, snowfall accumulations will range 2-4 inches with locally higher amounts in excess of 5 inches on Wednesday. From Virginia into southern Pennsylvania, snow accumulations of 1-2 inches and ice accumulations of up to a tenth of an inch are expected. Across western Pennsylvania, 1-3 inches of snow and freezing rain accumulations ranging 0.1-0.25 inch are forecast. From central Pennsylvania into central New York, 6-10 inches of snow with locally higher amounts in excess of 11 inches are expected in addition to up to a tenth of an inch. Across central and northeastern Pennsylvania into Maine, snowfall accumulations will range 4-7 inches with locally higher amounts in excess of 8 inches. Ice accumulations up to 0.20 inch are expected.
Major Cities in Region: Goodland, KS, Oklahoma City, OK, Tulsa, OK, Topeka, KS, Kansas City, MO, St. Louis, MO, Chicago, IL, Indianapolis, IN, Pittsburgh, PA, Washington, DC, Albany, NY, Augusta, ME, Bangor, ME
Thunderstorms Tuesday for the Southern Plains and Lower Mississippi Valley
A weak area of low pressure is forecast to develop over northeastern Texas this morning or by early afternoon and lift northward. This will bring moisture northward into the Lower Mississippi Valley ahead of a cold front. Increasing shower and thunderstorm activity is expected ahead of the front as it moves southward across Texas, Arkansas, and Louisiana through the evening. Despite marginal instability, a few storms may be capable of producing hail and damaging winds. Overall, severe impacts should be limited.
Major Cities in Region: Waco, TX, Dallas, TX, Little Rock, AR, Memphis, TN
Snow for the Northern Rockies and High Plains Thursday through Saturday Morning
An arctic front will move southeastward from Canada, bringing cold temperatures and moderate to heavy snowfall beginning Thursday morning and lasting through early Saturday morning. Precipitation may begin as freezing rain before transitioning completely to snow. Snowfall amounts of 3-6 inches with higher amounts expected in the higher elevations. A trace of ice is also possible.
Major Cities in Region: Helena, MT, Great Falls, MT, Billings, MT
A Look Ahead
As an area of low pressure moves into the Northeast on Sunday, precipitation that develops along and ahead of the system's cold front will likely fall as snow or a mixture of snow/sleet/freezing rain. Model guidance is showing this wintry mix from eastern Oklahoma into the Ohio Valley, with snow further to the north. Exact locations and amounts are highly uncertain at this time and later forecasts will allow details to become more clear.
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