Tranquil conditions today will give way to a stormy weekend, with significant snowfall developing for this Sunday, followed by a dangerous arctic blast.

TONIGHT

Clouds will increase as high pressure departs.  Winds will veer to the southwest at 5 to 10 mph. Low temperatures will range from the mid to upper 20s over the interior and upper 20s to lower 30s along the coast.

TOMORROW

An arctic cold front will approach the region with rain and snow showers by the afternoon.  Winds will veer from the southwest to the northwest at 5 to 15 mph.  High temperatures will range from the mid-30s over the interior, upper 30s to lower 40s in the Delaware River Valley, and lower to mid-40s along the coast.

TOMORROW NIGHT

Cloudy skies are expected, with a few flurries possible.  Winds will be from the northwest at 5 to 10 mph.  Low temperatures will range from the upper 10s to lower 20s over the interior and mid to upper 20s along the coast.

SUNDAY

The arctic cold front will press off the coast in the morning with scattered rain/snow showers.  An area of low pressure will develop over the coastal waters with periods of moderate to heavy snowfall in the afternoon and evening.  Accumulating snowfall is likely throughout the region, especially along the I-95 corridor.  See the impact map for details.  Winds will veer to the north at 5 to 10 mph.  High temperatures will range from the lower to mid-20s over the interior, upper 20s to lower 30s in the Delaware River Valley, and mid to upper 30s along the coast.

MONDAY

The low-pressure system will depart with lingering snow flurries and scattered clouds. Winds will be from the northwest at 5 to 15 mph.  Low temperatures will range from the single digits over the interior and lower to mid-10s along the coast.  High temperatures will range from the mid to upper 10s over the interior and lower to mid-20s along the coast.

TUESDAY

A series of troughs will produce scattered clouds and flurries.  Windy conditions are expected.  Low temperatures will range from the -10s to -0 over the interior and 0s along the coast.  High temperatures will range from the single digits over the interior and lower to mid-10s along the coast.

WEDNESDAY

A series of troughs will produce scattered clouds and flurries.  Windy conditions are expected.  Low temperatures will range from the -10s to -0 over the interior and 0s along the coast.  High temperatures will range from the single digits over the interior and lower to mid-10s along the coast.

THURSDAY

A series of troughs will produce scattered clouds and flurries.  Windy conditions are expected.  Low temperatures will range from the -10s to -0 over the interior and 0s along the coast.  High temperatures will range from the lower to mid-20s over the interior and mid to upper 20s along the coast.

FRIDAY

High pressure will produce scattered clouds.  Low temperatures will range from the single digits over the interior and lower to mid-10s along the coast.  High temperatures will range from the mid to upper 20s over the interior and upper 20s to lower 30s along the coast.