I am not sure that I have ever seen a METAR stating zero visibility in New York before:
Data at: 1950
UTC 20 Apr 2015
METAR for: KJFK (New York/Kennedy Int, NY, US)
Text: KJFK 201948Z 12006KT 0SM R04R/1400V4000FT
FG VV002 13/12 A2967 RMK AO2 SFC
VIS 1/4 RAE15DZB15E47 P0000
Temperature: 13.0°C ( 55°F)
Dewpoint: 12.0°C ( 54°F) [
RH = 94%]
Pressure (altimeter): 29.67 inches Hg (1004.8 mb)
Winds: from the ESE (120 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 0.00 sm ( 0.00 km)
Ceiling: indefinite ceiling with vertical visibility of 200 feet AGL
Clouds: obscured sky
Weather:
FG (fog)
If you have never designed an airplane part before, let the real designers do the work!