2006-10-16 13:23:49 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Weather
I would guess it has to do with rain associated with a frontal system versus rain associated with summertime convection. Frontal rains (i.e. cold/warm front) are generally large enough that they slowly come in. High clouds first, then lower clouds, then finally the deep rain clouds. So, this type of system, because it's so large, has a fore-shadowing effect and is long lasting. Summertime type rain (more convective in nature) kinda develops all of the sudden and doesn't last very long. Hope this helps.
2006-10-16 14:29:24 · answer #1 · answered by MarcH 2 · 1⤊ 0⤋
I'm just guessing about this, but maybe it means if the barometer takes a long time to fall, the storm is moving slowly and will take longer to pass. If the barometer drops rapidly, the storm is moving fast or is developing rapidly and will resolve rapidly.
2006-10-16 18:36:55 · answer #2 · answered by galacticsleigh 4 · 0⤊ 0⤋