51.   These are inexpensive, available at just about any supermarket and lend a pleasant tropical air without any extra labor.

52.   Though Brownsville, Texas, has direct access to tropical air from the Gulf of Mexico, the town is dry in July.

53.   Thundershowers and embedded downpours will continue across Southern Florida as an upper level disturbance interacts with entrenched tropical air.

54.   Tropical air will flow toward the boundary from the Caribbean while warm, less humid air streams in from the continent.

55.   Tropical air gliding northward around the Bermuda high will pass over the heated land of the Southeast, leading to widespread thunderstorms in the afternoon.

56.   Tropical air will cover the southern Plains, lower Mississippi and Ohio Valleys.

57.   Tuesday, tropical air with humidity reminiscent of summer streamed into the Carolinas.

58.   Tropical air streaming northward along the southeast and middle Atlantic coasts will be laden with rain clouds.

59.   Warm and increasingly humid air will stream into the Eastern states as the return air flow around high pressure south of Cape Cod directs tropical air toward the region.

60.   Warm tropical air from the Gulf of Mexico spreads up the mountains and cools.