The event Thom refers to in this song might very well have occurred during Radiohead's June 3rd-7th 2003 stay in New York City. According to this page there was heavy rain during this period, particularly on june 4th and 7th:
JUNE
4 - 2.75" of rain fell, a record for the date. Shortly before the rain ended 0.66" fell in the hour between 8-9PM. The high temperature was just 57, nineteen degrees below average.
7 - Nearly eight inches of rain fell since May 21, with rain falling on thirteen of these eighteen days. And every day but one had cooler than average temperatures. Today's rainfall totalled 0.90" and fell largely between 11AM-7PM. Five more inches of rain would fall in June, which became the rainiest on record with 10.26" measured.
4 - 2.75" of rain fell, a record for the date. Shortly before the rain ended 0.66" fell in the hour between 8-9PM. The high temperature was just 57, nineteen degrees below average.
7 - Nearly eight inches of rain fell since May 21, with rain falling on thirteen of these eighteen days. And every day but one had cooler than average temperatures. Today's rainfall totalled 0.90" and fell largely between 11AM-7PM. Five more inches of rain would fall in June, which became the rainiest on record with 10.26" measured.