21. Tropical storms have warm air masses , which help them generate more strength. 22. Isolated storms will erupt by afternoon amid the oppressively humid air mass . 23. Scattered thundershowers with downpours will be peppered in the tropical air mass . 24. Thundershowers will build in a sultry air mass along the Southeast Coast. 25. A shear layer results when air masses collide and cause buffeting currents. 26. Thundershowers will blossom in the sultry air mass in the afternoon. 27. Spotty thundershowers will also blossom in the muggy air mass over the Southeast. 28. On Thursday, this warm air mass will expand into Northeastern states. 29. One of the key ingredients is the collision of two disparate air masses . 30. This is because they force these air masses upwards, cooling adiabactically.
