The Weather Station Model Draw a Station Model

The Weather Station Model Draw a Station Model Get accompanying notes here ©Steve Kluge 2007 Some images from the NYSED Earth Science Reference Tables

Decoding the Coded Pressure 196 19. 6 Insert a decimal point to the left of the last digit Put a “ 9” and a “ 10” in front of the result 1019. 6 919. 6 Test the results against the range of normal atmospheric pressures 919. 6 is below the range of normal pressures…. REJECTED! 1019. 6 is within the range of normal pressures…. ACCEPTED! Coded pressure 196= 1019. 6 Decode these coded pressures: 002 1000. 2 Back to the Station Model mb 993 280 000 999. 3 1028. 0 1000. 0 How to encode pressures ©S. Kluge 2007

Encoding the Pressure 1013. 5 10135 Remove the decimal point Report the last 3 digits 135 Pressure 1013. 5 = 135 encoded pressure Encode these pressures: 1032. 7 327 Back to the Station Model 987. 3 1012. 2 873 122 1000. 1 001 Back to Decoding Pressures ©S. Kluge 2007

The Barometric Trend + 19 / + means “Higher now than it was 3 hours ago” (- means “Lower now than it was 3 hours ago”) 19 means the pressure has changed by 1. 9 mb / means the pressure is currently rising ( means the pressure is currently falling) What was the pressure 3 hours ago? Here? 1003. 5 1017. 7 Back to the Station Model ©S. Kluge 2007

Back to the Station Model ©S. Kluge 2007

NE at 25 Knots E at 5 Knots SE at 10 Knots Back to the Station Model ©S. Kluge 2007

Draw a Station Model for These Conditions: Temperature= 45 F Dewpoint= 32 F Wind NE at 20 knots Overcast Visibility= 1. 5 miles Rain Showers Pressure Now= 997. 3 mb Pressure 3 hrs. ago= 1000. 2 mb Barometer Falling Precipitation in last 6 hrs. =. 53 in. Back to the Station Model ©S. Kluge 2007