Name:_____________________

SCAN Homework #4

NOTE: This homework requires the WX briefing that we used in class, along with the 
WX charts handout.


1. Decode the METAR for KSBN at 2054Z:





2. For what condition(s) were the SPECI METARs created at KSBN?



3. From the IND Radar Summary, decode the ENTIRE first line of data:




4. If I were to arrive at KDTW at 2200Z what weather conditions could I expect to 
encounter?




5. If I decide to leave Detroit and fly to Indianapolis, IN, what weather conditions 
can I expect if my arrival time is 0800Z?




6. While flying over CLE/CVG (consider them the same airport for this question), at 
what altitude(s) should I encounter icing conditions?


7. While cruising along to DTW you encounter one of the many forecast thunderstorms 
over FWA.  Before you know it, you have been lifted up to FL390.  If your airspeed 
indicates 45kts and you determine your Magnetic heading to be 223�. What is your 
ground speed?  VAR= 3� W



8. After returning to your cruise altitude of 7,500 ft, visibility suddenly drops to 
1/4 sm in snow, and you experience slight strains against your seat belt in turbulence 
about half the time.  You decide to make a PIREP to warn other pilots of the 
conditions.  What would that PIREP look like? (Assume you are still over FWA and the 
current time is 1900 EDT) 



9. Using the surface analysis chart, tell me what the surface weather is like in NW 
New Mexico:


10. Using the Radar Summary CHART, describe to me the cell in Central Colorado:



11. On the radar Summary Chart, there is some data contained in a box in South 
Carolina.  What does that data represent?




12. On the low level Significant Weather Prognostic Charts, what is the difference 
between the two charts on the top and the two on the bottom?




13. Using the Low Level Significant Weather prognostic Charts, it appears that some 
moderate to severe turbulence will be developing over Georgia within 24 hours of the 
chart being issued.  What is main cause behind this change?  Also, be sure to include 
a complete description of the weather in Georgia at the end of the chart's valid period.







14. Finally, using the winds aloft chart, what are the forecast winds and temperature 
aloft over Fargo North Dakota?