Thursday, July 2nd 2009 Weather Outlook

Thursday’s Weather Outlook; Northeast/Gulf Coast System, West/Plains System

12:15AM

On Thursday, a system will slowly push through the Northeast, while a system slowly pushes across the West. An upper level low will push eastward into the Northeast. A disturbance will continue to rotate around the upper low, through the Northeat. Showers and storms will be likely associated with this upper low across portions of the Northeast and Gulf Coast. A few storms may become severe across portions of the Northeast. In portions of Vermont, New Hampshire, Rhode Island, Massachusetts, Conneticut, Pennsylvania, New Jersey and New York; CAPE values will be around 1000 J/KG, LI’s of -3 and Effective Bulk Shear values up to 40KT. The lack of instibility will limit the severe threat. Storms will develop from from New Hampshire down through New York and Pennsylvanian in the late Morning to early Afternoon. These storms will push eastward through the day, before weakening during the Evening as diurnal cooling sets in. There is a slight risk for severe storms across portions of Florida, Georiga, Alabama, Lousiana and Mississippi; CAPE values will be around 2500 J/KG, LI’s of -6 and Effective Bulk Shear values up to 40KT. Severe storms will develop along a front from Southwestern South Carolina back down into Southern Louisiana. These storms will push southeast into the Evening, before pushing offshore. The main threats from any storms that become severe will be damaging winds and hail. In the West, a system will slowly push eastward. Showers and storms will be likely associated with this system across portions of the West and Plains. There is a slight risk for severe storms across portions of Montana, North Dakota, South Dakota, Nebraska, Kansas, Colorado and Wyoming. CAPE values will be around 2000 J/KG, LI’s of -6 and Effective Bulk Shear values of 20-55KT. Severe storms will develop during the Afternoon from Montana down into Colorado. These storms will push eastward into the Evening. Storms may then from into and MCS across portions of Nebraska and South Dakota. This complex will continue eastward overnight, with storm storms being severe. The main threats from the severe storms will be damaging winds, hail and an isolated tornado. Below is the severe weather outlook for Thursday.