Severe & Hazardous Weather  Active Learning Exercises – Ed 4 Exercise 9.1  Airmass Identification

1. Write in the two‐letter abbreviation for each of the airmass descriptors below.

(a) warm and dry _________ (b) warm and moist _________ (c) cold and moist _________ (d) cold and dry _________

2. For each of the following reports of temperature and dewpoint, identify the type of airmass that is affecting the city. Use the two letter abbreviations identified above. 

 City Month Temp. Dew pt. Air mass

(a)  Washington, DC January 39 37 _________

(b)  Boston, MA July 81 71 _________

(c)  Milwaukee, WI January 24 8 _________

(d) Chicago, IL August 79 69 _________

(e) Oklahoma City, OK August 93 48 _________

(f) Dallas, TX March 70 63 _________

(g) Bismark, ND June 82 41 _________

(h) Kansas City, MO December 38 6 _________

(i) Salt Lake City, UT July 92 30 _________

(j) Seattle, WA October 48 45 _________