MRMS 3-hourly rainfall estimates and FLASH unit streamflow for NYC area. These are likely slightly underdone looking at Central Park now up to nearly 4.25" of rain in last 4 hr. Significant flash flooding in progress. #Henri pic.twitter.com/aXlUb2Xa9u

— Alan Gerard πŸ‡ΊπŸ‡¦ (@Wxmanms1) August 22, 2021