in less than 24 hours, the most in a single day in almost 60 years there. turning roads in to rivers. and vast swaths of the city in to muddy lakes. flood watches and warnings posted in texas this morning as downpours moved east. >> let's get the national memorial day forecast from molly cochran, accuweather forecaster. good morning, molly. >> reporter: thank you, john and diana. if you have this memorial day holiday off, break out the shorts and t-shirts. feeling like summertime across the northeast. temperatures well into the 80s from new york city to boston. don't get too comfortable, though. we will see a cooler trend pushing its way in to the new england states on tuesday and a then making its way in to much of the northeast by wednesday. different story across the south central picking up heavy rainfall on monday. want to keep a watchful eye to the skies. we can expect thunderstorms in there, as well. across much of the deep south, picking up on the heat along the gulf coast. thunderstorm activity to pop up mainly in the afternoon hours. across florida and north carolina.