1. 010
010
-12
022
02.2
1002.2
996.8
968
- 2.1
+21
994.7

2. Weather Synopsis

3. The Weather Station Model
Draw a Station Model

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

5. 196 19.6 919.6 1019.6 Decoding the Coded Pressure 196= 1019.6 mb
Insert a decimal point to the left of the last digit
19.6
Put a “9” or a “10” in front of the result
919.6
1019.6
196= mb
Decode these coded pressures:
1000.2
999.3
1028.0
1000.0
Back to the Station Model
How to encode pressures
©S. Kluge 2007

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

7. + 19 / The Barometric Trend 1017.7 1003.5/
Higher now than it was 3 hours ago
pressure is currently rising
the pressure has changed by 1.9 mb
What was the pressure 3 hours ago?
1017.7
1003.5
Back to the Station Model
©S. Kluge 2007

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

10. 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