Dream of Tsunami or high rise water

I dreamt twice in December. In my dream, I was running saving my family from the water before reaching us, it was so high coming towards us but the water never fall on us. We never get wet. But the feeling was horrified but I was calm in saving my family. I could not see my husband during the running, my children were with me. I got up, never stop thinking what was it. Some family members said that there will be challenges and I should be prepared spiritually. I hope it's not a bad sign.