31. Clouds will spread through the Northeast as a warm front approaches from the southwest. 32. Light snow in northern Michigan will attend a warm front . 33. The day started off on an active note with the warm front moving northwards. 34. A surge of milder, Pacific air will follow a warm front in the Northwest. 35. Isolated thunderstorms will occur near a developing warm front in the middle Mississippi Valley. 36. The Northwest coast will become damp as rain returns ahead of a warm front . 37. Even the workaholics have their fingers crossed that this warm front will demobilize the city. 38. A few weaker storms will extend into the Tennessee valley near an associated warm front . 39. Elsewhere, clouds and periods of rain will precede a warm front moving into the Northwest. 40. Some strong thunderstorms will erupt Sunday near a warm front across the upper Mississippi Valley.