An extremely cold air mass and strong northwest winds will develop and usher into the region today through Friday. Wind chills will be well below zero beginning this evening. A low pressure system will bring a combination of all snow, wintry mix, freezing rain and all rain beginning Saturday evening and tapering off Sunday evening. A respite from the below freezing temperatures on Sunday. However, the temperatures will fall again to below freezing beginning Monday.

Wind Chills as of 7:00 AM have been reported as follows:

CENTRAL PARK:
Temperature = 15 Degrees
Wind Speed = W15 G24 MPH
Wind Chill  = 0 Degrees

LAGUARDIA AIRPORT:
Temperature = 16 Degrees
Wind Speed = W17 G23 MPH
Wind Chill  = 0 Degrees

JOHN F. KENNEDY AIRPORT:
Temperature = 17 Degrees
Wind Speed = W22 G28 MPH
Wind Chill  = 0 Degrees

PRECIPITATION AND TIMING

· Snow may develop Saturday afternoon but it is more likely to begin before the evening rush hour.
· Snow will transition to a wintry mix or freezing rain by Saturday evening before midnight.
· All rain will begin Sunday morning sometime before 9AM.
· The rain will continue throughout the day Sunday and will begin to taper off Sunday evening.
· There is a chance of a brief wintry mix or all snow at the back end of this system developing Sunday evening with little to no accumulation.
· The timing of the transitions are still very uncertain at present time.
· Total snow accumulation expected is approximately 2 inches.
· There is a chance the boroughs of the Bronx and Manhattan could obtain 3 inches of snow.
· Total ice accumulation possible is one tenth of an inch.
· Less than ¼ of total liquid accumulation anticipated.
· If the changeover to all rain is sooner there is a chance of ½ of an inch of liquid accumulation.

WINDS

· Today: Northwest 16 MPH to 25 MPH with gusts up to 36 MPH.
· Tonight: West 20 MPH to 23 MPH with gusts up to 34 MPH.
· Friday: West 16 MPH to 21 MPH with gusts up to 32 MPH.
· Friday night: West 5 MPH to 8 MPH becoming calm after midnight.
· Saturday: Light south wind increasing to 6 MPH to 11 MPH in the morning.

TEMPERATURES (High/Low)

· Today: High 22 degrees. Wind chill values between zero and 5 degrees
· Tonight: Low 4 degrees. Wind chill values between -5 and -15 degrees.
· Friday: High near 17 degrees. Wind chill values between -5 and -15 degrees.
· Friday night: Low around 5 degrees.
· Saturday: High near 30 degrees.
· Saturday night: Low around 30 degrees.

· Minor urban flooding in low lying and poorly drained areas can be expected if the transition to all rain begins sooner.

WEATHER PRODUCTS

· Wind Chill Advisory in Effect From Midnight Tonight Until 10AM Friday Citywide

(YWN Desk – NYC)