Figure 6A-5 displays the marine observations and model data for the North Atlantic Ocean valid for nearly the same time as Figure 6A-3 and Figure 6A-4. The pattern of isobars (lines of equal air pressure drawn on this map at a 4-mb interval, labeled with coded values such as 90 meaning 990 mb, 00 meaning 1000 mb, and 12 meaning 1012 mb) appearing on the map reveals an atmospheric low pressure system (cyclone) centered at about 52°N, 37°W. As is typical with Northern Hemisphere atmospheric low-pressure systems, the associated horizontal wind pattern (indicated by winds barbs plotted around the the low-pressure center) exhibits motion as viewed from above. (Note: The wind arrows plotted on the map point in the direction towards which the wind is blowing. For wind speed, each full “feather" on arrows denotes 10 knots and each half-feather signifies 5 knots. Blue wind arrows denote ship observations and red from buoys.) a. clockwise b. counterclockwise Marine Observations Vald for February 13, 2020 12 GMT Model Pressures Vald for February 13, 2020 12 GMT (6 Hour Forecast) 7ON 60N SON 40N 60w Sow 40W 30W 20w 10W OE 10E