let's go over to our meteorologist yoko kumigata for more on this. >> another round of severe weather is targeting the u.s. plains. because the plains experiences a high frequency of tornados each year it's called tornado alley. in fact, a lot of severe weather activity is expected along this cold front on tuesday. severe thunderstorms are expected especially in southern texas all the way up to missouri on tuesday. some thunderstorms could produce heavy downpours, large hail and damaging winds. may is the peak of tornado season, so people should expect dangerous twisters as well. meanwhile the southwestern portions of of the u.s. are dealing with record breaking hot temperatures due to an extended heat wave. the high will be 40 degrees in phoenix on tuesday. it could reach the mid-40s by mid-week. in addition dry weather will increase the risk of fires. now we are looking at an active rainy season front that stretches across southern china. more than 180 millimeters of rain has fallen in parts on top of that up to 100 millimeters of rain is expected in the next 24 hours with a possibi