31. Several hours later, the remnants of Jeanne merged with a frontal system in the same region. 32. A frontal system with limited moisture will move quickly across the northern Plains toward the Great Lakes. 33. A swath of rain will sweep across New England on Saturday ahead of a weakening frontal system . 34. Farther south, a frontal system will bring showery rain from central California to northern Nevada and Utah. 35. Most precipitation comes from frontal systems , particularly stationary fronts that bring humid air from the Atlantic Ocean. 36. However, a band of clouds and patchy snow will accompany a frontal system neat the Great Lakes. 37. An approaching frontal system from the west resulted in Harriet re-curving to the south on 4 March. 38. Clouds will rapidly thicken near the Northeast coast as a frontal system approaches from the Middle West. 39. A stream of Pacific moisture will impact much of the West as a complex frontal system pushes onshore. 40. A complex frontal system will spread a band of moderate rain into parts of the Northeast on Friday.
