Thunderstorms poured heavy rains over parts of the Navajo Nation on Independence day, making some roads impossible to drive over. Mexican Springs resident Kim Fransico said between 7-9 p.m. on the Fourth of July, thunderstorms dumped significant rain over …Thunderstorms poured heavy rains over parts of the Navajo Nation on Independence day, making some roads impossible to drive over. Mexican Springs resident Kim Fransico said between 7-9 p.m. on the Fourth of July, thunderstorms dumped significant rain over …