3-25. 3-26. 3-27. 3-28. Most tornadoes in the United States occur during what season(s) of the year? 1. Fall 2. Midwinter 3. Summer and early fall 4. Spring and early summer Which  type  of  tornado  is  normally associated  with  squall  lines? 1. Great  Plains 2. Gulf  Coast 3. West  Coast 4. Eastern Although  the  phenomena  are  not similar,    the formation of both thunderstorms  and  fog  originates  in a moist,    unstable air mass. 1. True 2. False Frontal fog would be LEAST likely to form in which of the following areas? 1. In advance of a warm front 2. To the rear of a slow-moving cold front 3. To the rear of a fast-moving cold front 4. In the warm sector of a low- pressure  area IN  ANSWERING  QUESTION  3-29,  REFER TO FIGURE 5-17 IN YOUR TRAMAN. 3-29. Assume  that  smoke  was  present during the day and night preceding the  fog  formation  indicated  in figure  5-17. What should be your forecast time of fog formation? 1. 0230 local standard time 2. 0330  local  standard  time 3. 0430  local  standard  time 4. 0530 local standard time Figure 3-A IN ANSWERING QUESTION 3-30, REFER TO FIGURE  3-A. 3-30. The warm front depicted in figure 3-A is located 40 miles southwest of stations A and B. It is forecast  to  move  northeastward  at 20 knots,    and is expected to pass stations A and B at approximately 0230 local standard time. The wind will shift to the southwest at 16 knots What should be your forecast for stations A and B at 0430 local standard time? 1. Heavy  fog  with  possible  drizzle 2. Moderate  fog  with  possible drizzle 3. Low  stratus  clouds  and  possible drizzle 4. Stratocumulus  clouds  with unrestricted   visibility 3-31. Which  of  the  following meteorological  situations  is  most favorable for the formation of radiation fog? 1. A clear,    cool night with strong winds in a fast-moving, high- pressure  area 2. A  cloudy,    warm night with light breezes in the warm sector of a low-pressure  area 3. A clear,    cool night with light breezes in a stationary high- pressure  area 4. A sultry, humid evening with calm winds in the warm sector of  a  low-pressure  area 3-32. What type of fog is formed when a warm,    rainy air mass overrides a stable,    continental  polar  (cP)  air mass? 1. Frontal  passage  fog 2. Postfrontal  fog 3. Radiational  fog 4. Prefrontal  fog 19