1. Friday, May 9 th, 2014 Endangered: Leatherback sea turtle (Dermochelys coriacea) Kingdom: Animalia Class: Reptilia Order: Testudines Family: Dermochelyidae The leatherback is the largest, deepest diving, & most migratory of all sea turtles. Adults can reach 4-8 ft & 500-2000lbs.

2. Do Now: May 9 th 1.Describe what happens at a stationary front. 2.Compare & contrast cirrus & cumulus clouds. 3.You have plans to go surfing. Would you prefer a low pressure system or high pressure system? Explain why.

3. Do Now: May 9 th 1.Describe a stationary front. –Wind/rain @ a stalled front – not moving 2.Compare/contrast cirrus & cumulus. –Cirrus: wispy, hair-like –Cumulus: fluffy, puffy, cotton –Both: fair weather clouds 3.You go surfing. Would you prefer a low or high pressure system? Explain why. –High pressure system – pretty day –Low pressure system – winds = big waves

4. YouTube Friday http://www.youtube.com/watch?v=QbM- xf_ACYIhttp://www.youtube.com/watch?v=QbM- xf_ACYI http://www.youtube.com/watch?v=00IpNW oaXiwhttp://www.youtube.com/watch?v=00IpNW oaXiw http://www.youtube.com/watch?v=zDyt0M 8Zecwhttp://www.youtube.com/watch?v=zDyt0M 8Zecw

5. Station Models Summary diagram of weather conditions @ a weather station

6. Station Models

7. Decoding Coded Pressure 196 Insert decimal point to left of last digit 19.6 Put a “9” and a “10” in front of result 919.6 1019.6 Test results against range of normal atmospheric pressures 919.6 is below range of normal pressures….REJECTED! 1019.6 is w/in range of normal pressures….ACCEPTED! Coded pressure 196= 1019.6 mb Decode these coded pressures: 002 993 280 000 1000.2 999.3 1028.01000.0

8. Encoding the Pressure 1013.5 Remove decimal point 10135 Report last 3 digits 135 Pressure 1013.5 = 135 encoded pressure Encode these pressures: 1032.7 987.3 1012.2 1000.1 327 873 122001

9. The Barometric Trend + 19 / + means “Higher now than it was 3 hrs ago” (- means “Lower now than it was 3 hrs ago” ) 19 means pressure has changed by 1.9 mb / means pressure is currently rising ( \ means pressure is currently falling ) What was the pressure 3 hours ago? 1017.7 +1.9 = 1019.6 1003.5 -2.8 = 1000.7

11. NE at 25 Knots E at 5 Knots SE at 10 Knots

12. Temperature= 45F Dewpoint= 32F Wind NE at 20 knots Overcast Visibility= 1.5 miles Rain Showers Pressure Now= 997.3 mb Pressure 3 hrs. ago= 1000.2mb Barometer Falling Precipitation in last 6 hrs.=.53 in. Draw a Station Model for These Conditions:

13. Temperature= 45F Dewpoint= 32F Wind NE at 20 knots Overcast Visibility= 1.5 miles Rain Showers Pressure Now= 997.3 mb Pressure 3 hrs. ago= 1000.2mb Barometer Falling Precipitation in last 6 hrs.=.53 in. Draw a Station Model for These Conditions:

14. Synoptic Weather Map

15. Example Temperature: 50°F Present Conditions: Snow Barometric Pressure: 1002.4 Visibility: 2 miles Cloud cover: 50% Barometric Pressure Change: -1.5 Wind Direction: from the northeast Wind Speed: 5 knots Dew Point Temperature: 38°F

16. Example Temperature: 50°F Present Conditions: Snow Barometric Pressure: 1002.4 Visibility: 2 miles Cloud cover: 50% Barometric Pressure Change: -1.5 Wind Direction: from the northeast Wind Speed: 5 knots Dew Point Temperature: 38°F