Due to the extreme weather conditions in Texas, Oklahoma, Arkansas and Tennessee, these states are experiencing significant power outages and road closures. We have seen reduced capacity at all mail facility in the Dallas region which may affect some shipments. Significant ice storm across the southern Plains and Mid-South to gradually end today turning to driving rain. The cold and dangerous wind chills to enter the northern Plains and Upper Midwest before sweeping into the Northeast by Friday. Periods of heavy snow return to the Sierra and Cascades late this week into the weekend.