They just filed the application today with the FCC:
"STATION KGOW(AM) IS LOCATED IN THE HOUSTON, TEXAS RADIO MARKET. THE STATION'S DAYTIME TRANSMITTER SITE IS LOCATED IN A LOW LYING AREA THAT HAS, OVER THE YEARS, FLOODING DURING INUNDATIONS FROM STORMS. THE HOUSTON AREA HAS RECENTLY SUFFERED THE CONSEQUENCES OF TROPICAL DEPRESSION IMELDA. KGOW'S TRANSMISSION FACILITY WAS FLOODED AND ITS EQUIPMENT HAS BEEN DETRIMENTALLY AFFECTED. IT IS NOW OFF-AIR AS THE LICENSEE SEEKS TO REPAIR THE DAMAGE AND RESTORE THE STATION TO SERVICE AT THE EARLIEST POSSIBLE TIME."
They have become a victim of climate change. We will see more of this in the future, as many AM stations have their towers in swampy, low-lying areas.