Over the next few days an upper-level disturbance will be present, and when it combines with warmer and humid air, a threat of severe thunderstorms will loom. Parts of the East and South can expect rainy weather with some chances of severity over the next couple of days. A second disturbance will move into the northern Rockies and the Northern Plains, and this will be the trigger for even more thunderstorms throughout the rest of the week.
On Tuesday, the Northern Gulf Coast, the lower Mississippi Valley, Tennessee Valley, and Ohio Valleys will experience some thunderstorms. Winds that can cause a lot of damage will be the biggest threat, and the chance of tornadoes popping up cannot be ruled out at this point in time. The rest of the southeast and the Mid-Atlantic States can expect isolated patches of damaging wind gusts and large hail threats, yet this will only occur during the afternoon and early evening hours. The Northern High Plains are predicted to see very high winds, large hail, and possibly a few tornadoes. The Dakotas, Wyoming, and Montana are most likely to see this severe weather.
Moving on to Wednesday and Thursday, the east can expect scattered to many thunderstorms from Florida into the Northeast. A few of these have the possibility to turn severe for a brief period of time. In the Midwest, a few severe thunderstorm cells will move along an advancing cold front from the Northern Plains and Western Great Lakes. This cell will then move into the Mississippi Valley, the plains of eastern Colorado, Kansas, and Oklahoma. The biggest threat for this cell is damaging winds and large hail.
During this time of year, the atmosphere is jam packed with moisture in many areas. What does this mean? This means that thunderstorms can take the form of very heavy downpours instead of light rain and thunderstorms. Through Tuesday evening there is a chance of spotty flash flooding in parts of east Texas, Louisiana, Mississippi, Tennessee, Alabama, and all the way into the Ohio Valley. In the Northeastern region, there is a still a small risk of flooding through the urban areas due to slow-moving thunderstorms over the major cities of the I-95 corridor, as this happened on Monday in Newark, and the small suburbs of Philadelphia. Although there is a risk of flooding, there is not a widespread flood threat for the Northeast.
On Wednesday, spotty flash flooding may affect any areas in the East when slow-moving thunderstorms are present. There may be the potential for thunderstorm formations to cluster overnight in parts of Kansas and Oklahoma. Also, this may trigger flash flooding overnight Wednesday into early Thursday morning.
Stay tuned to the local weather authority in your area or to the Weather Channel for any updates on the weather in your region!