1. Using weather maps, diagrams and data January 1 and January 2, 2010
Earth Science
Mrs. McMahon

5. All from http://www. weather. com http://cimss. ssec. wisc
All from or
Infrared maps indicate temperature at top of clouds. Left shows well-developed low in Atlantic

6. For the same time, the water vapor image and infrared image identify storms and motion

7. http://cimss. ssec. wisc

8. (l) Forecast precipitation for next day and ® the precipitable water for January 2nd.

9. January 1, 2010 pressure and temperatures
Please note: on temperature maps, ‘H’ refers to warm and “L’ refers to cool temperatures. On pressure maps, ‘H’ refers to high pressure system and ‘L’ to low pressure system
Note the conditions in the northeast on January 1, 2010.

10. January 2, 2010 pressure and temperature
Please note: on temperature maps, ‘H’ refers to warm and “L’ refers to cool temperatures. On pressure maps, ‘H’ refers to high pressure system and ‘L’ to low pressure system
Contrast January 1 with January 2 for the northeast. Note the change in temperature and closeness of isobars.

11. January 2, 2010 pressure (sea level conversion)
Please note: on temperature maps, ‘H’ refers to warm and “L’ refers to cool temperatures. On pressure maps, ‘H’ refers to high pressure system and ‘L’ to low pressure system
The data of surface pressure on the left is used to construct the isobars on the right, which give the pattern.

12. temperature
Please note: on temperature maps, ‘H’ refers to warm and “L’ refers to cool temperatures. On pressure maps, ‘H’ refers to high pressure system and ‘L’ to low pressure system
The temperatures from the left are used to construct the isotherms on the right

13. Comparison of temperatures from Jan 1 to Jan 2, 2010
Please note: on temperature maps, ‘H’ refers to warm and “L’ refers to cool temperatures. On pressure maps, ‘H’ refers to high pressure system and ‘L’ to low pressure system
It’s easier to compare the incredible change in temperatures from January 1 and January 2 when they are side by side.

14. Comparison of surface pressures January 1 to January 2, 2010
Please note: on temperature maps, ‘H’ refers to warm and “L’ refers to cool temperatures. On pressure maps, ‘H’ refers to high pressure system and ‘L’ to low pressure system
Comparison of pressures

15. Surface winds and pressure
Wind vectors show wind direction and speed. Correlate the winds with the isobars. Wind is created by differences in pressure

16. Dewpoint temperature, air temperature and relative humidity
Relative humidity is really the relationship between surface temperatures and dew points.
Dewpoint temperature,
air temperature and
relative humidity

17. January 2, 2010 surface maps
Note the wind direction off the northeast coast. There’s a low pressure center out there, bringing a ‘nor’easter’ blizzard to New England

18. Jet stream (high altitude winds) and surface patterns in northeast
The jet stream in winter helps ‘steer’ the air masses. On the right, we see the center of the low.

19. Poughkeepsie meteorogram and stuve January 2
(l) Poughkeepsie’s weather in graphical form. ® Poughkeepsie’s atmosphere vertical conditions

20. New York surface conditions in data form

21. Blank US map and stuve

25. http://cimss. ssec. wisc