So we look at this storm as two parts round one is the cold front with a jet streak ( Burst of snow) and round II is the possible coastal tomorrow night. Here is the breakdown and totals map below.

The NAM took the game up on the first round of warmer temps but more precip to work with on this model. It's a significant jump from last night's run at 00z/7pm vs. this morning's run. Surface temps and ground temps are the key here.

ROUND ONE OF THE WEEKEND STORM...

"THE FRONTAL JET STREAK"

RAW NAM NUMBERS "NOT A FORECAST" FORECAST ON MAPS

BLUE NUMBER GRASSY TOTALS (OLD RUN LAST NIGHT)

PHILLY  (NAM)                  .34" WET SNOW (RAIN START) 1-2"  (OLD .12")

PHILLY (GFS)                   .18" WET SNOW (MIX START)  1" (OLD .23")

NE PHILLY             .35" WET SNOW (RAIN START) 1-2" (OLD .12")

NE PHILLY (GFS) .20" WET SNOW (MIX START) 1" (OLD .22")

READING               .23" WET SNOW (SLUSHY) 1-2" (OLD .10")

READING (GFS)    .19" WET SNOW (SLUSHY) 1-2" (OLD .19")

ALLENTOWN (NAM)      .19"  WET SNOW .5" - 1.0" (OLD .02")

ALLENTOWN (GFS)       .20"  WET SNOW 1" (OLD .12")

QUAKERTOWN   .25" WET SNOW 1-2" (OLD .07")

QUAKERTOWN   .19" WET SNOW 1-2" OLD .12")

K OF PRUSSIA     .28" WET SNOW 1-2" (OLD .11")

WEST CHESTER  .34" RAIN/SNOW 1-2" (OLD .13")

WILMINGTON        .40" RAIN/SNOW 1-2" (OLD .13")

NEWARK DE        .39" RAIN/SNOW 1-2" (OLD .13")

ELKTON MD         .39" RAIN/SNOW 1-2" (OLD .13")

MIDDLETOWN     .31" RAIN/SNOW 1" (OLD .13")

SMYRNA               .25" RAIN/SNOW 1" (OLD .14")

DOVER                   .13" MOSTLY RAIN 0" (OLD .16")                 

MILFORD               .10" MOSTLY RAIN 0" (OLD .15")

CHERRY HILL NJ .32" RAIN/SNOW 1-2" (OLD .12")

TRENTON               .36" RAIN/SNOW 1-2" (OLD .14")

WILLIAMSTOWN   .33" RAIN/SNOW 1-2" (OLD .14")

BRIDGETON          .29" RAIN/SNOW 1-2" (OLD .14")

ELMER                    .15" RAIN/SNOW 0-1" (OLD .14")

VINELAND             .16" RAIN/SNOW 0-1" (OLD .16")

A.C. METRO         .10" RAIN 0" (OLD .15")    

WILDWOOD         .09" RAIN 0" (OLD .15")

NATIONAL WEATHER SERVICE MAP ROUND ONE TONIGHT ONLY

THIS IS ALSO MY CALL FOR ROUND ONE (GFS/NAM COMBO)

NYC AND LONG ISLAND...COMBO ROUNDS OF SNOW/RAIN

THIS IS FOR TONIGHT AND SAT NIGHT INTO SUNDAY A.M.

THIS IS ALSO MY FORECAST...PRETTY CLOSE TO N.W.S.