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

2. For Example: 196 Decoding the Coded Pressure 1019.6 1000.2 999.3
If the number is between add a 10 to the front of the number
If the number is between add a 9 to the front of the number
- 196 is between 0-499, so we add a 10 to the front of the number
10196
Next you, insert a decimal point to the left of the last digit
1019.6
Decode these coded pressures:
1000.2
999.3
1028.0
1000.0
Back to the Station Model
How to encode pressures
©S. Kluge 2007

3. Encoding the Pressure
1013.5
Remove the decimal point
10135
Report the last 3 digits
135
Pressure = 135 encoded pressure
Encode these pressures:
327
873
122
001
Back to the Station Model
Back to Decoding Pressures
©S. Kluge 2007

4. / means the pressure is currently rising
The Barometric Trend /
+ 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?
1017.7
1003.5
Back to the Station Model
©S. Kluge 2007

5. Back to the Station Model
©S. Kluge 2007

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

7. Draw a Station Model for These Conditions:
Temperature= 45F
Dewpoint= 32F
Wind NE at 20 knots
Overcast
Visibility= 1.5 miles
Rain Showers
Pressure Now= mb
Pressure 3 hrs. ago= mb
Barometer Falling
Precipitation in last 6 hrs.= .53 in.
Back to the Station Model
©S. Kluge 2007