Update, Feb. 9, 8:00 a.m.: As of Tuesday morning, snow totals have fallen for the Philadelphia region. Expect scattered snow showers and temperatures in the mid to high 30s. See the map below for updated snowfall, courtesy of the National Weather Service.

Updated snowfall forecast from @NWS_MountHolly issued a couple hours ago. Snow totals have been lowered. pic.twitter.com/9MMtSl5N5p

— Gary Szatkowski (@GarySzatkowski) February 9, 2016

Original article continues below.

A winter storm warning is in effect for Southeastern Pennsylvania. The National Weather Service is predicting periods of snow beginning late Monday night through early Wednesday morning. Snowfall forecasts quickly rose from two inches to four to eight inches in Philadelphia.

@NWS_MountHolly has been issued. pic.twitter.com/GKzQ4rb9vA

— Gary Szatkowski (@GarySzatkowski) February 8, 2016

Per the National Weather Service's storm warning:

• Hazard types: periods of snow.
• Snow accumulations: 4 to 8 inches.
• Timing: Snow is expected to develop late this evening and overnight, then continue through Tuesday night. The snow has the potential to fall at a moderate to heavy rate at times Tuesday and Tuesday night.
• Impacts: accumulating snow will affect travel late tonight through Tuesday night, including the rush hour commutes. The road conditions will likely deteriorate during times of heavier snowfall rates. Remember, bridges and other elevated surfaces tend to become slippery first.
• Visibilities: one half mile or less at times.
• Temperatures: falling into the upper 20s to lower 30s late tonight, then around freezing during Tuesday.
• Winds: Northeast 5 to 15 mph with gusts up to 25 mph.

The Kenney administration says it will be sending out a fleet of plows and salt trucks around midnight Monday, and the snow removal operations will continue into Tuesday as needed. No emergency declaration has been made.

“This may not be on the scale of last month’s blizzard, but we are treating this as a full-scale event,” Clarena Tolson, Deputy Managing Director for Infrastructure and Transportation, said in a statement. “We want to make sure we’re out there ahead of the storm.”