2. Station Models  Allows weather data to be plotted on a map in a condensed & usable format. It shows the current weather conditions for a particular location. Page 5

3. Station Models on a Map

4. Keys to Weather Map Symbols What page of the ESRT? 13

5. Station Model   Purpose: allows data to be plotted in a condensed and usable format   Temperature and Dewpoint are always in Fahrenheit   Wind direction: winds are identified as the direction FROM which they come   Barometric pressure is shortened to a 3-digit number station model code Page 5

6. Weather Variables and Locations Page 5

7. Temp dewpt  The staff will point the direction the wind is coming from  What is the wind direction in this example?  ANSWER: Northwest or West Northwest Wind Direction Staff

8. The coding for the wind speed symbols can be generalized as: half staff about 5 knots note, it is not on the end of the wind direction staff full staff about 10 knots these are additive for the total amounts three full staffs=30 knots Wind Speed

9. Wind Symbols: Speed Calm Less than 5kts 5 kts 10 kts 50 kts

10. Now You Try It 15kts 45kts 25kts 20kts 30kts 40kts 35kts

11. Westerly Wind

12. North Westerly Wind

13. Southern Wind

14. no clouds about 10% about 25% about 40% about 50% about 60% about 75% about 80% completely overcast sky obscured On a station model, cloud coverage is described in these forms:

15. Samples of present weather symbols. fog haze thunderstorm, drizzle lightning rain * snow slight rain showers. ice or snow pellets cloud development not observed

16. Temp dewpt pressure Current Barometric Pressure

17. Barometric Pressure is VERY important! average barometric pressure at sea level is 1013.25 mb or 29.92 in. of Hg current barometric pressure is reported to the nearest TENTH BUT, they don’t want to waste space

18.  Pressure Conversion Station model Air pressure (mb) 053 Below 500 add 10 Above 500 add a 9 and add a decimal before last number (1005.3) 542 954.2 101 1010.1 The 500 Rule

19. Page 5 Keys to Weather Map Symbols What page of the ESRT? 13

20. Page 5 Lets Practice

21. 08408.41008.4 96296.2996.2 28128.11028.1 87587.5 987.5 What is the pressure? 32232.21032.2

22.  Convert to their short form: 1) 1018.0 ______ 2) 1018.4 ________ 3) 982.2 ______ 4) 975.6 __________ 5) 984.8 ______ 6) 1000.1 _________ 5) 984.8 ______ 6) 1000.1 _________ 7) 1018.2 _____ 8) 989.1 __________ 7) 1018.2 _____ 8) 989.1 __________ 9) 988.8 ______ 10) 1011.1 ________ 9) 988.8 ______ 10) 1011.1 ________ 180184 822 756 Page 6 848001 891 111 182 888

23. 11) 206 ________ 12) 281 ________ 13) 080 ________ 14) 168 ________ 15) 888 ________ 998.7 Page 6 1028.1 1008.0 1016.8 988.8 Convert to Long Form 16) 800 _______ 17) 987 _______ 18) 768 _______ 19) 000 _______ 20) 165 _______ 1016.5 976.8 980.0 1020.6 1000.0

24. Station Model Quiz  A. 74 10 72 002 -31\ A. Wind direction ___________ wind speed ___________ cloud cover___________ temperature ___________ dewpoint___________ air pressure ___________ pressure change ___________ visibility ___________ Present weather ___________ SE 15knots 50% 74ºF 72ºF 1000.2mb -3.1mb 10mi NONE Page 6.50

25. Station Model Quiz  B. 48 1/2 48 986 -2\ B. Wind direction ___________ wind speed ___________ cloud cover___________ temperature ___________ dewpoint___________ air pressure ___________ pressure change ___________ visibility ___________ Present weather ___________ NW 25knots 100% 48ºF 998.6mb -.2mb ½ mi Fog = Page 6

26. Page 7 Construct a Station Model #2

27. 1. 1. 2 2. 2. 3 3. 3. 4 4. 4. 1 5. 5. 1 Station Model Quiz Page 7