Heavy rain triggered flooding in the Vamsadhara and Nagavali rivers in north coastal Andhra Pradesh after a cyclonic storm crossed Odisha. Red alerts were issued for three districts amid forecasts of rainfall and flash flood risks, while officials reviewed preparedness. Visakhapatnam: Heavy rainfall under the impact of a cyclonic storm that crossed the Odisha coast early on Friday triggered flooding in the Vamsadhara and Nagavali rivers in north coastal Andhra Pradesh, inundating.