Certainly! Let’s break down each question step by step, using general meteorological principles and the information you provided about meteograms and mid-latitude cyclones. --- ### **10. When did the cold front pass through the city represented above? (2 pts)** **How to Detect a Cold Front Passage on a Meteogram:** - **Temperature:** Sharp drop (often the most clear indicator). - **Dew Point:** Usually drops as well (drier air behind the front). - **Pressure:** Usually falls ahead of the front, then rises sharply after passage. - **Wind Direction:** Shifts, often from south/southwest to west/northwest. - **Precipitation:** Often increases right at or just before frontal passage. **From your meteogram values (as best as I can parse the time marks):** - Look for a sharp drop in temperature and dew point. - Check the time labels (e.g., 12/1700, 12/1500, etc.). - If, say, temperature drops precipitously between 12/1700 and 12/1800, with concurrent changes in dew point and wind, that’s your front. **Answer:** **The cold front passed through the city at approximately 12/1800 UTC** (or whichever time on your meteogram matches the sharp drop in temperature, dew point, and a shift in wind direction). --- ### **11. How did winds shift after its passage? (2 pts)** **How to Detect Wind Shift on a Meteogram:** - **Before the front:** Winds typically from the south or southwest (warm sector). - **After the front:** Winds shift to west, northwest, or north (cold, dry air). **Answer:** **After the cold front passage, the winds shifted from the south/southwest to the west/northwest.** --- ### **12. Based on the surface charts, which one of the cities indicated below is represented by this meteogram? (2 pts)** - Minneapolis - Indianapolis - Oklahoma City - Birmingham **How to Decide:** - Cities closer to the center or along the path of the cyclone will experience the most pronounced cold front passage. - Minneapolis (north) is often in the path of the strongest cold fronts with sharp temperature drops and wind shifts. - Oklahoma and Birmingham are usually farther south; fronts may be weaker or slower. - Indianapolis is typically further east/southeast relative to the mid-latitude cyclone path. Considering the sharp, classic signals on the meteogram (pronounced temp & dewpoint drop, clear wind shift), **Minneapolis** is most likely. **Answer:** **The city represented by this meteogram is Minneapolis.** --- ### **Bonus: Draw the Low location and fronts on the satellite image (3 pts). Step-by-step explanation** **Step-by-step:** 1. **Identify the cloud pattern:** - Mid-latitude cyclones often have a comma-shaped cloud pattern on satellite imagery. - The center of the comma (clear slot) is generally near the surface low. 2. **Locate the Low:** - Find the “center” of rotation in the cloud field; this is where the surface low is located. - Mark an ‘L’ at that spot. 3. **Draw the Fronts:** - **Cold Front:** Extends south/southwest from the low center, marked by a sharp edge in clouds, often a line of cumulonimbus or a band of clouds. - **Warm Front:** Extends east or southeast from the low, marked by a broad shield of layered clouds (stratus, altostratus, nimbostratus). - **Occluded Front (if present):** Wraps from the cold front around the low, shown as a bent-back cloud band. **Diagram:** (describe, since I can't draw here) - Place the 'L' at the center of the comma. - Draw a blue line with triangles (cold front) southward from the L along the sharp edge of clouds. - Draw a red line with semicircles (warm front) east/southeast from the L along the lighter cloud shield. - If you see a bent-back band, draw a purple line with alternating triangles and semicircles (occluded front) wrapping north/northwest from the low. --- ## **Summary Table** | Question | Answer | |----------|---------| | **10. Cold front passage time** | ~12/1800 UTC (where temp & dewpoint drop) | | **11. Wind shift** | From S/SW to W/NW after frontal passage | | **12. City** | Minneapolis | | **Bonus** | Mark 'L' at comma head, cold front S/SW, warm front E/SE, occluded front if present | **Let me know if you want a diagram or have the actual meteogram image for specific timing!**