Persons are requested to not travel unless escaping flood waters. The National Weather Service More Quotes by The National Weather Service More Quotes From The National Weather Service This is a recipe for explosive fire growth, if a fire starts, have your go back ready. The National Weather Service top-news Anyone with interests along impacted rivers should monitor closely/take action. The National Weather Service top-news Travel will be tough and possibly impossible at times through the Sierra with no clear break in snowfall once this begins. The National Weather Service us The greatest threat for any flash flooding or severe weather will be across southern New England and the northern Mid-Atlantic states Tuesday evening. The National Weather Service top-news Currently there are 21 million under a flood watch or warning from eastern Oklahoma up into Indiana. many of the rivers in these states have crested or (are) nearing crest and remain in moderate or major flood category. Many roads across this region are closed because of the flooding. The National Weather Service us-news These extreme temperatures can be life-threatening. The National Weather Service top-news Locally damaging wind and marginally severe hail also may occur from the lower Missouri and lower Ohio Valleys to the mid-Atlantic coast. The National Weather Service environment Seek higher ground now! The National Weather Service us-news Either way, we're looking at a significant event. The National Weather Service top-news Visibility will be reduced to near zero in whiteout conditions. The National Weather Service company-news Gusts 50 to 60 mph (80-97 kph) possible. Downed trees & lines likely. The National Weather Service environment The area of greatest concern is from southeast Colorado to portions of Texas, the primary threat with these storms will be very large hail, but damaging winds and even a few tornadoes can not be ruled out. The National Weather Service environment Highs on Friday will struggle to get out of the teens from the Ohio Valley to the Mid-Atlantic region. The National Weather Service environment Snowmelt is well underway and will continue through Monday. It is this snowmelt that will ultimately cause the flooding concerns, it is warming up already, it's in the 40s right now and based on the temperatures we've been dealing with, it's pretty balmy. The National Weather Service top-news