Rain resumed with storms mainly in the north during the evening of the 11th into the early hours of the 12th. This occurred despite other areas receiving little to no rain (Figure 3a). All of this combined to give local totals as high as 3.84” and 3.52” in Mansfield (Burlington), 3.20” at Bordentown (Burlington), 2.87” in Burlington (Burlington), five other stations from 2.06”–2.60”, and 39 from 1.00”–1.86”. Scattered showers occurred during the afternoon of the 9th, transitioning to locally heavy rain early on the 10th, followed by a line of storms moving through central NJ during the evening, and finally rain in the north into the early hours of the 11th. The next two events exemplified the frequent local nature of summertime rainfall. Note the scale in inches at the bottom of the map. Rainfall from approximately 7 AM on August 7th to 7 AM on August 9th based on a PRISM (Oregon State University) analysis generated using NWS Cooperative and CoCoRaHS observations. Two Stafford Township stations caught 3.90” and 3.06”, with 3.82” in Washington Township (Burlington), Bass River Township (Burlington) 3.70”, both Winslow Township (Camden) and West Creek (Ocean) 3.49”, and Buena Vista (Atlantic) 3.18”. The heaviest totals were in the southern half of the state, with under 0.50” in the north (Figure 2). Totals range from 3.00”–4.00” (red over a portion of southwest NJ) to 12.00”–13.00” (dark green).Ī review of the inch-plus events begins a week into the month when rain moved into the south during the afternoon of the 7th, eventually making it north and slowly departing coastal areas during the daytime hours of the 8th. August 2021 precipitation across New Jersey based on a PRISM (Oregon State University) analysis generated using NWS Cooperative and CoCoRaHS observations from 7 AM on July 31st to 7 AM on August 31st. Stations in Ocean County were found in both categories.įigure 1. Thus, the top ten wettest stations were found in five counties while the seven driest stations were also found in five counties. Woodstown (Salem) saw the least rainfall with 2.38”, followed by Pennsville (Salem) 2.76”, Manasquan (Monmouth) 3.40”, South Harrison (Gloucester) 3.42”, Moorestown (Burlington) 3.43”, Point Pleasant Beach (Ocean) 3.58”, and Franklin Township (Gloucester) 3.61”. Next was Ringwood (Passaic) at 11.57”, West Milford (Passaic) 11.29”, Bedminster (Somerset) 11.15”, Far Hills (Somerset) 10.99”, Plainsboro (Middlesex) 10.82”, Long Beach Township (Ocean) 10.80, Rockaway Township (Morris) 10.75”, and Mine Hill Township (Morris) 10.74”. Top honors went to two stations in Stafford Township (Ocean County) with 11.89” and 11.20”. The lowest totals were in the southwest and along the north and south coasts. Still, as seen in Figure 1, the majority of the state received above-average rainfall, the wettest areas scattered in north, central, and central coastal areas. The 10 warmest Augusts across New Jersey since 1895.Īs is commonly the case during summer months, rainfall totals varied widely across NJ this August, by a factor of four from wettest to driest locations. The maximum temperature averaged 84.9°, some 1.1° above normal and ranks 18th warmest. This is 3.6° above normal and ranks 2nd warmest. The warmth was most strongly a function of elevated nighttime temperatures, which, for NJ, averaged 66.9°. Seven of the top 10 and 13 of the warmest 20 have occurred this century. The statewide average temperature of 75.9° is 2.3° degrees above normal and ranks 4th warmest (Table 1). The northern climate division led the way with 7.89” (+3.33”, 11th wettest), followed by the coastal area with 6.65” (+2.05”, 21st wettest), and the southern division at 6.21” (+1.64”, 27th wettest). This is 2.30” above the 1991–2020 normal and ranks as the 15th wettest August since 1895. Of course, there was much else to consider this month, including contributions of rain from two tropical storms, one of which brought the largest crests on some rivers since May 1, 2014, 11 days where one or more locations received at least 2.00” of rain, and 16 days where the high temperature reached 90° or higher somewhere in the state.Īdding up all the rainfall, the statewide monthly average was 6.87”. Whether the thermometer was reading high or low this August or whether rain was falling or not, one factor that most always had to be considered was the high level of humidity.
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