Hurricanes and Tornadoes That Hit Green Brook, NJ

The nearest NOAA station with 1991–2020 climate normals is Plainfield, NJ, 4 miles east of Green Brook at 90 feet. July is the warmest, with an average high of 88°F and low of 66°F; January is the coolest, at 41°F and 24°F. July is the wettest at 5.3 inches of precipitation on average and February the driest at 3.1 inches; the year adds up to 48.7 inches over 78 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (25.7 of 48.7 inches); the other six months are drier. September has brought the most of the 45 tropical systems that passed within 75 miles (18); a normal September there has highs of 79°F and 4.3 inches of precipitation. Highs reach 90°F on about 29 days a year, almost all from May to September. Lows fall below freezing on about 103 nights a year. Snowfall averages 21.4 inches a year, most of it in February. That 48.7 inches is more than at 28 of the 51 New Jersey stations used on this site (55%). Bound Brook, 4 miles southwest, has its own station (Somerville 4 NW, NJ): 46.8 inches a year, 1.9 less than here, and a July average high of 86°F against 88°F.

Since 1996, the National Weather Service has logged 586 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Green Brook: 351 thunderstorm wind reports, 149 flash floods, 51 floods, 22 lightning strikes and 13 heavy rain events. They killed 9 people and injured 10, and the NWS estimated $101.2 million in property and crop damage. The strongest thunderstorm gust on record here was 92 mph, on July 1, 2013. July has had the most flash floods, 63 of 149. Of the 455 New Jersey cities on this site with a flash flood on record, 294 have had fewer than Green Brook.

Flood insurance policyholders in Green Brook's ZIP code 08812 have filed 710 claims with the National Flood Insurance Program since 1978, and were paid $14.8 million for buildings and contents, in the dollars of each year. The most came from Hurricane Irene in 2011: 145 claims (20% of all) and $1.9 million, then Hurricane Ida in 2021 with 114 and Hurricane Floyd in 1999 with 106. 89% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 395 New Jersey cities on this site with 10 or more claims, 341 have fewer than Green Brook.