Pennsylvania Snow Updates: Current Forecast, Accumulation Totals, Travel Impacts

Snow that moved in overnight has already coated the Philadelphia region with four or more inches in some areas, causing perilous traveling conditions and closing schools.

A Winter Storm Warning is in place across the Philadelphia region through 4 p.m. on Thursday.

(For more alerts on the storm,click here to get Patch's daily newsletter and free, real-time news alerts.)

The heaviest snow is expected to fall until 12 noon. Snow rates up to 2 inches per hour are possible during that time. Snow should end this afternoon. It will be a wet snow, which will stick to trees and power lines. Power outages are possible.

Some parts of the region have already reported more than four inches as of Thursday morning, with even higher accumulations reported in the Lehigh Valley. The National Weather Service predicts a total of 6 to 12 inches could fall during the course of the storm.

The heavy snow will cause poor visibilities. That, coupled with dropping temperatures, will make travel dangerous, forecasters say.

Significant impacts have already been reported on the roads and with public transit. Air travel has also been significantly impacted. Delays and impacts may continue into Thursday night as below freezing temperatures are expected to continue.

Speed limits were reduced on several Pennsylvania highways early Thursday, however, by 10 a.m. PennDOT announced the restrictions were lifted.

"PennDOT is continuing to treat roadways in the area and will continue until roads are clear," the agency said in an announcement.

For more information on highway conditions, visit 511pa.com.

A majority of flights departing from Philadelphia International Airport have been cancelled. The airport advises travelers to check with their carrier prior to departure to determine the status of their flight.

SEPTA has reported several delays. Check here for the latest updates on public transit.

Here is a look at some of the snow totals reported by the National Weather Service as of 9:30 a.m.:

BUCKS COUNTY

DOYLESTOWN 4 inches, 1006 AM
WEST ROCKHILL TWP 4.5 inches, 1002 AM
BEDMINSTER 5 inches, 948 AM
LOWER MAKEFIELD TWP 3.7 inches, 932 AM
SELLERSVILLE 4.5 inches, 752 AM
WEST ROCKHILL TWP 3.5 inches, 749 AM

CHESTER COUNTY

VALLEY FORGE 4.5 inches, 914 AM
CHESTERBROOK 4.5 inches, 939 AM
EXTON 3.6 inches, 949 AM
EAST NANTMEAL 3.5 inches, 751 AM
PHOENIXVILLE 3.0 inches, 956 AM
WEST CALN TWP 3.0 inches, 951 AM
1 WNW BERWYN 3.0 inches, 800 AM
LANDENBERG 3.0 inches, 804 AM
2 SSE WEST CHESTER 2.6 inches, 800 AM
2 NE UNIONVILLE 2.1 inches, 830 AM
NEW LONDON 1.4 inches, 750 AM
NW WICKERTON 1.0 inches, 800 AM

DELAWARE COUNTY

WAYNE 4.0 inches, 938 AM
CHADDS FORD 3.5 inches, 915 AM
LANSDOWNE 2.6 inches, 944 AM

LEHIGH COUNTY

CENTER VALLEY 7.0 inches, 853 AM
2 ENE SCHNECKSVILLE 6.0 inches, 752 AM
NEW TRIPOLI 5.0 inches, 852 AM
ZIONSVILLE 4.7 inches, 820 AM
HEIDELBERG TWP 4.5 inches, 722 AM

MONTGOMERY COUNTY

MAPLE GLEN 4.5 inches, 948 AM
GRATERFORD 3.6 inches, 938 AM
3 SW LANSDALE 3.5 inches, 845 AM
COLLEGEVILLE 3.5 inches, 941 AM
2 WSW SCHWENKSVILLE 3.4 inches, 800 AM
GILBERTSVILLE 3.3 inches, 1002 AM
EAGLEVILLE 3.3 inches, 907 AM
1 W AMBLER 3.0 inches, 858 AM
ROYERSFORD 3.0 inches, 943 AM
WYNWOOD ESTATES 3.0 inches, 935 AM

NORTHAMPTON COUNTY

EASTON 7.0 inches, 950 AM
BUSHKILL TWP 6.1 inches, 925 AM
ACKERMANVILLE 6.0 inches, 957 AM
4 S ACKERMANVILLE 5.0 inches, 809 AM
MARTINS CREEK 4.8 inches, 748 AM

PHILADELPHIA COUNTY

PHILADELPHIA FIRE 54 2.8 inches, 1009 AM