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CHANGES UPON PASSAGE OF A WARM FRONT |
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| Condition | Ahead of Front | Behind Front |
| Temperature | Cold | Warm |
| Pressure | Falling | Rising |
| Tdew | Lower | Higher |
| Wind | To right as one faces front (parallel to front) | From back as one faces front (perpendicular to front) |
| Clouds | Increasing well ahead of front, clearing near front | Decreasing |
| Precipitation | Well ahead of front, tapering off near front | Light or none |