1.Minneapolis, in southeastern Minnesota, was located to the east of the low-pre
ID: 3280961 • Letter: 1
Question
1.Minneapolis, in southeastern Minnesota, was located to the east of the low-pressure center. The temperature and dewpoint at Minneapolis at map time were 62°F and 53°F, respectively. Because the temperature and dewpoint at the surface were not equal, it indicated the air at the surface in Minneapolis ________ saturated.
[ ] was
[ ] was not
2.The Minneapolis station model showed the cloud cover at map time as ________.
[ ] clear
[ ] partly cloudy [ ] mostly cloudy [ ] overcast
3.This sky cover condition confirmed that saturated air ________ exist aloft over Minneapolis at that time.
[ ] did
[ ] did not
4.Furthermore, the presence and shadings of radar returns scattered nearby Minneapolis indicated that precipitation ________ occurring in this general area. Precipitation results from cloud formation and droplet growth processes.
[ ] was
[ ] was not
5.Wind directions in the several-state area including Minneapolis, centered on the L in southern Canada (along the Manitoba/Saskatchewan border), were generally ________, as expected with the hand-twist model of a Low.
[ ] clockwise and outward
[ ] counterclockwise and inward
6.The converging air in the several-state area centered on the L was forcing vertical atmospheric motion. Therefore, we ________ rising motions would be producing clouds in the Minneapolis area.
[ ] can be confident [ ] cannot agree that
7.Minneapolis can be found ________ of the warm front associated with the low-pressure in the High Plains. As in most cases, air on this side of the warm front tends to have ________ motion.
[ ] ahead; rising
[ ] ahead; descending [ ] behind; rising
[ ] behind; descending
8.Station models showing sky cover conditions from Minnesota westward into North Dakota ________ indicate that rising motions due to the low-pressure center and frontal boundaries across the area were leading to cloud formation with rising air.
[ ] did
[ ] did not
9.In fact, in North Dakota, the two stations models reporting present weather in the state were observing ________ present weather symbol(s). That symbol denoted ________ at map time.
[ ] similar; light rain
[ ] similar; thunder
[ ] different; sleet
[ ] different; light snow
10. In general, where precipitation was indicated by radar shadings across the map, sky cover conditions in station models near the shadings ________ display varying degrees of cloudiness. (Of course, cloud development can lead to precipitation but not all clouds precipitate! Several stations in the High Plains had varying degrees of cloudiness without precipitation.)
[ ] did
[ ] did not
Explanation / Answer
These questions are answered from the image given above.
1. As the temperture and dewpoint are different, hence air at the surface was not saturated.
2. mostly cloudy
3. did
4. was
5. clockwise and outward
8. did
10. did
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