8/19/2023 0 Comments Wayne nj rainfall totals![]() ![]() Provisional Flood Peaks Recorded at USGS gaging stations during the Flood of August 14-16, 2011(Public domain.) USGS gages recorded from 6.2 to 9.9 inches of rain in the Raritan and Rahway River Basins, 6.5 to 8.6 inches in the Passaic and Hackensack River Basins, 4.3 to 7.9 inches in the Lower Delaware River Basin, 6.0 to 10.3 inches in the Upper Delaware Basin, and 4.2 to 6.7 inches in the southern Atlantic Coastal Plain Basins. Gages at NWS climate sites at Newark, Trenton, and Atlantic City recorded 8.92 inches, 5.74 inches, and 5.88 inches, respectively. Precipitation gages operated by the USGS and the NWS recorded total precipitation amounts ranging from 4.2 inches at the USGS gage at Lakewood in Monmouth County (400530074090901) to 10.3 inches at the USGS precipitation gage at Stockton in Hunterdon County (402414074584401). 1) shows the distribution of precipitation from Hurricane Irene across the State. A National Weather Service map of total observed precipitation for the 24-hour period ending September 28, 2011, at 0800 hours EST (fig. Geological Survey (USGS) and National Weather Service (NWS) precipitation gages in southwestern, central, and northeastern New Jersey. Higher amounts, from 9 inches to as much as 10 inches, were observed at U.S. From 6 to 8 inches fell across most of the State. Rain continued for about an 18-hour period through Sunday morning. Steady, heavier rain developed on Saturday afternoon moving into northern New Jersey by mid-afternoon. Light rain began to fall during late morning on Saturday, August 27, in southern New Jersey. This is the first time since 1903 that a hurricane made landfall in New Jersey. The hurricane then moved back over open water before making landfall for a second time at Little Egg Inlet, New Jersey, at 0535 hours eastern daylight time Sunday morning, Aug(Associated Press, 2011). Hurricane Irene moved north along the Atlantic Coast, making landfall near Cape Lookout, North Carolina, in the early morning hours on Saturday, August 27, 2011. Screen capture of National Weather Service map of total observed precipitation in New Jersey and vicinity for 24-hour period ending August 28, 2011, at 0800 hours EDT.(Public domain.) Record peak flows are documented in a table. ![]() The locations of streamgages with peaks of record and hydrographs for selected gages are shown in illustrations. This report describes conditions preceding and during Hurricane Irene. The President signed a Major Disaster Declaration FEMA-DR-4021 on August 31, 2011, for all 21 counties in New Jersey. Thirty-three gages experienced peaks equal to or greater than the 100-year recurrence interval (< 1.0% annual exceedance probability). Thirty-nine of the 94 gages with greater than or equal to 20 years of record had record high peaks. Rainfall totaling as much as 10 inches fell during August 27–28, 2011 and, combined with wet antecedent conditions caused by 8 to 16 inches of rain statewide during the 3 weeks preceding Hurricane Irene, set the stage for record-breaking floods on many streams in New Jersey. Thirty gages experienced peaks greater then the 100 year recurrence interval and ten of these gages experienced greater than a 500 year event. Another 24 gages recorded the second highest peaks of record and 5 gages recorded the third highest peaks of record. “Those who lived it won’t forget it, and those who lived it probably don’t remember the last time it was this bad.Thirty-eight of the 93 gages with greater than or equal to 20 years of record had record high peaks. “This was a generational event from a rainfall perspective and flooding perspective,” Jones said. Jones added that the last time the Northeast saw comparable rainfall was 2011’s Hurricane Irene. 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. ![]()
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