Good Wednesday morning… a lot to know for the next couple days! We’re dealing with a heavy rainfall and flash flooding threat, and on top of that, the potential for severe weather later this afternoon and evening. A very slow moving cold front along with abundant moisture will continue to bring us the necessary ingredients for heavy rain and strong storms through tomorrow.
The rain has already begun in southern Arkansas this morning and will gradually fill into the rest of the ArkLaMiss through the course of the day. Flash Flood Watches are in effect throughout the region (except Catahoula, Concordia, and Tensas Parish) through tomorrow night. The heavy rain will last through southern Arkansas through the morning and afternoon, and the axis of heaviest rainfall will gradually shift southward through the day and overnight. South of I-20 won’t see the heaviest accumulating rainfall until overnight.
A slight risk for severe storms has also been issued for today. Primary threats will be large hail, damaging winds, and a few possible tornadoes. The timing for severe storms looks to be through the afternoon and evening today, when instability ramps up. The threat for heavy rainfall and flash flooding will persist through the next 36 hours.
Widespread, heavy rainfall with some embedded t’storms will come in waves through today and overnight. Expect the flash flooding concern to be highest when the heavy rainfall trains in place for more than a couple hours at a time, especially for low-lying, poor drainage areas. We will most likely see anywhere from 3″-6″ area wide through tomorrow night, while locally higher/lower amounts are always possible.