Note that the color scale is the same on both Figures 1 and 2. This was seen in the divisional numbers that had the south come in with 4.43”, which is 0.98” above average 33rd wettest, while the north averaged 3.09”, which is 0.77” below average and ranks 78th wettest (49th driest).Ī map is also displayed that included reports through the morning of December 1st (Figure 2). The map in Figure 1 shows that the southern half of the state was on the wetter side of normal while the north on the dry side. This was 0.30” above the 1981–2010 normal and ranks as the 43rd wettest of the past 126 years. As such, the official statewide precipitation total for November was 3.91”. State and station precipitation totals for November will be presented for the “official” month (ending on the morning of the 30th except for airport and some Coop observations that were made at midnight on the 30th), and for the “unofficial” month (taking into account reports from the morning of December 1st). In this month’s report, we will report on the November 30th storm, rather than wait to discuss it in the December report. CoCoRaHS observations are used as the main source of individual station observations for events during the month or for month at these stations. In our monthly reports, Coop observations are employed in the generation of monthly statewide and divisional totals and departures as these stations have long periods of record. So while an observer might be inclined to enter all of the rain that fell on November 30th on their observation form for the 30th it would be improper to do so. Any precipitation falling after this time is entered on the next morning’s observation, namely the 1st of the new month. So this rain should all go into the November record book, correct? No, this is not the case and here is the “catch.” Given that the vast majority of National Weather Service Cooperative and CoCoRaHS observers measure daily precipitation between 6–8 AM, the convention is such that this observation time signifies the end of the observing day, in this case for the 30th and thus for the month. All but some very light showers were over before midnight. Moderate to heavy rain fell during the morning and early afternoon, resuming in the evening as a squall line moved through. In the far southern counties, rain began prior to dawn on the 30th, but held off until daylight elsewhere. The “dreaded” last-day-of-the-month significant precipitation event occurred in November. Monthly precipitation totals for November require an explanation that long-time readers of these reports have read previously on multiple occasions. Only 2012 was warmer, with both years likely to retain this ranking for the calendar year unless an extremely cold or warm December occurs, which, as this report is written, appears unlikely. This is 2.7° above normal and ranks as the second warmest such interval. The average temperature for the first 11 months is 57.1°. Of the first 11 months of 2020, only April and May averaged below normal. Six of the past 12 months have ranked in the top nine for warmth. The 10 warmest Novembers across NJ since 1895.
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