* WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected Thursday night through Friday morning. Winds turn to the northwest behind a strong cold front Friday afternoon. There may be a lull in the strongest wind gusts around midday Friday before the cold front passes through the region. Wind gusts in the wake of the front up to 50 MPH are possible. * WHERE...Portions of northern Delaware, central, northern, northwest, and southern New Jersey, and east central and southeast Pennsylvania. * WHEN...From 1 AM Friday to 1 AM EST Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.