NAME: __________________________ SS#: ____________________________ Grade: ___________/20

Homework 11 - Winter Weather

Meteorology 1111, Fall 2002
Due: 11/27 at beginning of class

Snowfall accumulation depends on the temperature of the air and ground. They both need to be freezing or below in order for accumulation to take place on the ground. If snow does not melt when it hits the ground, then we say it is 'sticking'.

1. (1 pt) Would snow stick if the air temperature was 27 degrees and the ground temperature was 34 degrees?

 

2. (1 pt) Would snow have the ability to stick if the air was 32 degrees and the ground was 32 also?

 

3. (3 pts) There are three items, or rules of thumb, when forecasting lake effect snow. What are they?

 

 

4. (1 pt) Where does snowfall usually occur with respect to a cyclone?

 

5. (2 pts) What are the criteria fora winter storm to be classified as a blizzard?

 

6. (1 pt) From the notes, what is the basic set-up for lake effect snow?

 

 

7. (1 pt) What is the process that initiates convection in lake effect snow?

 

 

8. (2 pts) How does topography enhance lake effect snow?

 

 

9. (2 pts) What conditions lead to a stable lake effect environment? (ie: lake effect will not occur) (Hint: look in the notes)

 

 

10. (2 pts) Models can be very useful in forecasting the weather. However, why are models generally poor for forecasting lake effect snow? Why do you think models have this problem?

 

 

11. (2 pts) A quick review. Buffalo, New York is experiencing some winter weather currently (freezing rain). This makes it a great station to ask you to remember a bit of your METAR decoding. What is the temperature and dew point (to the nearest tenth of a degree)?

KBUF 162354Z 07012KT 6SM -FZRAPL BR OVC009 00/M01 A3006 RMK AO2 CIG 007V012

SLP190 T00001006 10006 20000 56012 $=