Storm Summary Number 1 for Midwest to Northeast Winter Storm
NWS Weather Prediction Center College Park MD
1000 AM EST Sun Jan 31 2021

...Moderate snow continues to impact portions of the Upper
Midwest, before a developing Nor'easter ushers in impactful winter
weather in the Mid-Atlantic and Northeast...

Winter Storm Warnings are in effect through much of the
Mid-Atlantic.

Winter Storm Warnings are in effect across the Upper Midwest
through the Ohio Valley.

Coastal Flood Warnings are in effect for portions of east-central
Delaware, along the Atlantic Coast through Long Island.

Winter Storm Watches are in effect over the entirety of the
Northeast.

For a detailed graphical depiction of the latest watches, warnings
and advisories, please see www.weather.gov

At 700 AM EST...An area of low pressure at 1002 mb was analyzed on
the Illinois-Indiana border, near 38.71 87.50. An occluded frontal
boundary extended southward into a triple point along the
Kentucky-Tennessee border, with a curving cold front trailing
through the Lower Mississippi Valley into South Texas. The
synoptic warm front was drawn southeastward from the triple point
into Northern Alabama through Georgia, connecting to a coastal
warm front in the Carolinas. National Weather Service Doppler
RADAR observed light to moderate snow in the Upper Midwest
pivoting around the upper level system, while moderate mixed
precipitation was detected in the eastern Ohio Valley into the
Lower Great Lakes. Meanwhile, moderate to heavy snow was occuring
over much of central Pennsylvania into southern Virginia, where
freezing rain was reported.  

...Selected preliminary Storm Total Snowfall in inches from 1000
AM EST Mon Jan 30 through 900 AM EST Thu Jan 31...

...ILLINOIS...
BULT FIELD-MONEE 4.9 SE              10.5                    
HIGHWOOD 0.9 S                       10.1                    
HOFFMAN ESTATES 0.6 ESE              10.0                    
CRETE 2.6 E                           9.5                    
ROMEOVILLE                            9.5                    
PEOTONE                               9.3                    
HARWOOD HEIGHTS 0.4 NNE               9.0                    
OAK PARK 1.5 S                        8.5                    
HOMER GLEN 1 NNE                      7.5                    
CEDAR RAPIDS 3 W                      7.0                    
OAK LAWN                              6.5                    
FREEPORT 1 N                          5.0                    
O'HARE AIRPORT                        4.5                    

...INDIANA...
VALPARAISO 2.2 WNW                   11.5                    
LA PORTE 1.6 SW                      10.2                    
DE MOTTE 0.8 NNW                      9.7                    
DYER 1 WNW                            8.7                    
MONTICELLO 1 SE                       8.0                    
RENSSELAER 1.9 SSW                    7.5                    
ROLLING HILLS 1 N                     7.3                    
FRANKFORT 5 NNE                       6.1                    
WEST LAFAYETTE 5 WNW                  6.0                    
WEST LAFAYETTE                        5.3                    
WESTFIELD 1 ESE                       4.5                    
MONUMENT CIRCLE 3 S                   4.0                    
BROOKLYN                              3.8                    
PLAINFIELD 1 W                        3.5                    

...IOWA...
AMANA 4.7 W                           6.5                    
CEDAR RAPIDS 2 W                      6.4                    
HARPERS FERRY 6.4 SSW                 5.6                    
MARION 2 W                            5.1                    

...OHIO...
PIQUA 0.8 SSE                         5.4                    
RUSSIA 1.3 NNW                        5.0                    
VERSAILLES 1.6 WSW                    5.0                    
ALBANY 4.1 NW                         4.5                    
HUBER HEIGHTS                         3.8                    
FINDLAY 1 SSW                         3.6                    
BOWLING GREEN 1 W                     3.5                    
MEXICO 2 NNW                          3.5                    
CIRCLEVILLE                           3.0                    
MIFFLIN 5 NW                          3.0                    
TOLEDO 4 SE                           2.2                    
WILMINGTON                            1.0                    

...PENNSYLVANIA...
HIDDEN VALLEY 0.3 ENE                 2.0                    
CARMICHAELS                           1.5                    
WAYNESBURG 1 E                        1.5                    
CHARLEROI                             1.0                    

...WEST VIRGINIA...
CASS 3.7 SW                           5.3                    
ALDERSON 0.8 SSW                      5.1                    
PRINCETON 0.3 NNW                     3.5                    
GHENT                                 2.8                    
NUTTER FORT                           2.0                    
MORGANTOWN 5.9W                       1.6                    

...WISCONSIN...
MILWAUKEE 3.6 NNW                    13.0                    
THIENSVILLE                          10.0                    
WAUWATOSE 1.9 E                      10.0                    
PLEASANT PRARIE 3.8 NW                8.5                    
KENOSHA 3.8 WSW                       8.3                    
GERMANTOWN 0.6 S                      7.5                    
WEST BEND 7.3                         6.6                    
GENERAL MITCHELL AIPORT               5.3                    
DANE COUNTY REGIONAL AIRPORT          3.8                    
NWS MILWAUKEE/SULLIVAN                3.7                    


Moderate snow and mixed precipitation will continue to impact the
Midwest and Ohio Valley as the occluded system moves eastward
before subsiding, with an additonal 2-4 inches of snow likely.
Later this afternoon, a frontal wave is forecast to develop on the
Carolina coast and intensify into a full-fledged Nor-easter as it
lifts north. Moderate snowfall accumulations of 4-6 inches and up
to .10 inch of freezing rain are likely from southern Virginia up
to Washington D.C. Further north, heavy snowfall is forecast to
develop from Pennsylvania into Massachusetts tonight and Monday,
with 12-18 inches of snow possible, before lifting into upper New
England Tuesday. High wind combined with heavy snowfall will make
for treacherous travel conditions along the I-95 corridor from
Pennsylvania into Maine, where Major Impacts are forecast on the
Winter Storm Severity Index. Moreover, coastal innudation and
beach erosion is likely Monday into Tuesday along the coast from
Delaware into New York.    

The next Storm Summary will be issued by the Weather Prediction
Center at 1000 AM EST Mon Feb 01 2021. Please refer to your local
National Weather Service office for additional information on this
event.

Asherman