Somerville, Somerset Airport, NJ Most Humid 100 Somerville, Somerset Airport, NJ Least Humid, Highest Pressure 1013.9 hPa Somerville, Somerset Airport, NJ Lowest Pressure 1009. Unit Settings Measurement preferences are saved. “Those who lived it won’t forget it, and those who lived it probably don’t remember the last time it was this bad. Somerset County rain forecast updated daily. “This was a generational event from a rainfall perspective and flooding perspective,” Jones said. Flooding caused by excessive rainfall is expected. Jones added that the last time the Northeast saw comparable rainfall was 2011’s Hurricane Irene. No one covers Philadelphia, New Jersey and Delaware weather like 6abc. You add 3 inches per hour rainfall to that, and it starts flooding instantly.” “The soil moisture was already high, and the streams were already elevated. Then Henri clipped a portion of the same area last week,” Jones said. “The rainfall from Fred saturated the ground and elevated the rivers. And Newark, which had a monthly average of 4 inches, received 9 inches of rain.įlooding from the storm killed at least 42 people, submerged cars and flooded homes, highways and subway systems throughout the region.ĭarone Jones, director of the Water Prediction Operations Division at the National Water Center, said the area was primed for flooding, as it had been soaked by tropical storm Fred and Hurricane Henri in the weeks before Ida. Parts of the city received 10 inches during the storm. For example, New York City, which saw flooded subways and where at least nine people died Wednesday, averaged 4 inches of rain in September between 19.