IL-5 - Part 3 - Fronts and Cyclones

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Salt Lake Community College *

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1010

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Geography

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Apr 3, 2024

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docx

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Uploaded by MasterMolePerson1040

Question 6 : Describe the location of any low pressure centers on the map, within the contiguous U.S. There are low pressure centers moving from (1) southern California east through the southern states and stopping at Oklahoma. There is another low pressure center (2) off the northern coast of the U.S. Another low pressure center (3) is from western Idaho south into the southeastern corner of Wyoming. Question 7 : For EACH of the low pressure centers described in question 6, describe the location and type of any fronts that seem to be associated with each low. (i.e. is touching the low or extending out from the low). (1) From California to Oklahoma, there are cold fronts moving into those areas. (2) For northeastern U.S., there is an occluded front. (3) From Idaho to Wyoming, there are stationary fronts. Question 8 : For EACH of the low pressure areas described in question 6, describe the clouds at the location of the low pressure center. (1) The clouds move from a few higher colder clouds in California, then moves into areas of no or very low clouds along Arizona and New Mexico down into Texas. The low pressure heads along the northern area of Texas, keeping in areas of no to very low clouds into Oklahoma, following along a line of higher colder clouds along mid-southern Texas and Oklahoma. (2) There are lower, warmer cloud tops along this low pressure center. (3) The clouds are lower, warmer clouds in mid-Idaho then moves to higher, colder clouds as you follow the low pressure into Wyoming. Question 9 : For EACH of the fronts described in question 7, describe the clouds along the fronts. (1) Above this low pressure center, there is a cold front moving in from the northwest and northeast. The clouds range from higher, colder clouds in California , up to lower, warmer clouds as this front passes through Idaho, then back to higher, colder as it moves through Wyoming heading south. The cold front continues down through Colorado into Texas with lower, warmer clouds until it reaches Oklahoma. Then the clouds are few to no clouds in that area. (2) The occluded front here is mostly low, warmer clouds with a few areas of few to no clouds. (3) The front in this area is part of the same front from the low pressure center in question 1. However, the low pressure center starts in Idaho at a stationary front where there are areas of few to no clouds mixed with areas of warm, lower clouds.

Question 10 : Describe how you could use your knowledge of the general circulation of the atmosphere, airmasses and fronts, and the weather map and satellite image you downloaded above to forecast the weather for Salt Lake City, UT over the next 24 hours. I can take a look at which pressure system is moving through SLC. Then I could look at the fronts that are moving toward that area. I could use the satellite imagery to determine what cloud coverage and therefore precipitation we will see. Question 11 : Using the method you describe in question 10, what would be your best guess for what the weather will be like in Salt Lake City, UT over the next 24 hours? Be as detailed as possible, AND describe WHY you came up with this forecast. I can see from the pressure image that there appears to be a trough moving through SLC. This would tell us there will be low pressure in that area. There is a cold front moving in from the northwest that tells us precipitation is happening at that front currently. In looking at the satellite imaging, I see that we have higher, colder clouds in SLC right now. I would guess based on this information that we could expect some mixed precipitation including possibly some snow based on the temperature of the atmosphere and surface when that cold front moves in.

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