31. The pollution has been held in place by a ridge of high pressure that has parked over the Valley. 32. A ridge of high pressure stretching from Oregon to Oklahoma will produce sunny and warm conditions in the Southwest. 33. Most of the Plains will be bathed in plentiful sunshine as a ridge of high pressure crosses the region. 34. The broad and disorganized remnant low remained nearly stationary due to a ridge of high pressure to its north. 35. Lake-effect snows will taper and gradually end as a ridge of high pressure builds into the region later Tuesday. 36. Ample sunshine and building warmth will embrace the Northeast, under the auspices of a building ridge of high pressure . 37. A ridge of high pressure and clear to partly cloudy skies were expected over the Rockies and Great Basin. 38. A ridge of high pressure near the Tennessee Valley provided fair and pleasant weather in most of the South. 39. Cool air will cling to the Northeast coast Thursday as a ridge of high pressure stalls over the region. 40. Private forecasters predict a ridge of high pressure , currently in the desert southwest, could enter the Midwest late next week.
