The low pressure area east of Mindanao now has a high potential for storm formation in the next 24 hours, according to PAGASA. At 3 a.m., January 14, the LPA was located 755 km east of Davao City. Its trough or extension is already affecting parts of Visayas and Mindanao. The weather disturbance will be assigned the local name Ada once it develops into the country’s first tropical depression this year. Wind signals may be immediately raised in parts of Mindanao and Visayas. Ada is seen to move n

CLOSER LOOK at the UNSEASONABLE DEEP UPPER AIR TROUGH and its associated cold, unstable pool of air aloft which is coming together over the Midwest. The colors on this upper wind speed animation denote wind velocity. Note the brown shaded wind max diving southward to the west of Chicago. This puts the city beneath the left front quadrant of that "upper wind max"---a region in which air is vigorously lifted in what meteorologists refer to an an "indirect circulation". The way that lift is generat