New Brunswick, NJ

Toward the end of May, the threat of a significant drought loomed over the Garden State, as May proved to be the 3rd driest on record. Crops were in bad shape or not growing at all, and reservoir levels were declining at a faster than seasonal rate. However, New Jersey had yet to reach the point where average and timely rainfall could not remedy the situation. Not only was this prescription filled, it was done in abundance. June rainfall averaged 8.21" across NJ. This was 4.19" above the 1981-2010 normal and ranked 4th wettest since 1895 (Table 1). It joined four other Junes in the past 13 years to rank in the top eight over this 121-year period. As explained in last month's report, the rains that fell during the daytime and evening hours of May 31st factored into the June total, much as the localized afternoon and evening rains on June 30th (discussed below) will count toward the July total.

Whether it is a browning lawn, dry garden soil, or pollen that hasn’t washed off your car in weeks, many of us in New Jersey have recognized that the state is in the midst of an extended period of very meager rainfall. Along with the aforementioned impacts, the flow of water in streams and ground water levels as monitored in wells are below, and in some cases, well below seasonal levels. While it is fortunate that surface reservoirs in northern and central NJ are close to seasonal levels (quite full), there is less water than normal flowing into them and early season lawn watering is drawing water out of them at an unseasonable pace.

Advice provided by our office, by those within the National Weather Service and the NJ Department of Environmental Protection, and by others associated with the weekly US Drought Monitor has led to this week’s Monitor map depicting the northern third of NJ in D1 (defined as moderate drought) and the remainder of the state down to around the Atlantic City Expressway in D0 (abnormally dry). D1 can be expected to occur once every 5-10 years during a particular month, while D0 can be found every 3-5 years. While the type of conditions being experienced in parts of NJ right now are drought like, I am hesitant to call the north in “moderate” drought, and would prefer saying “minor” drought. However, this is the definition of the nomenclature decided upon by a national committee, thus within the Monitor map it is “moderate” in the north.

For the second consecutive year, March served as a meteorological exclamation point on an active cold and snowy season. As in 2013/14, this season had below-average November temperatures, milder-than-average December readings, and below-average January, February, and March tallies. The March temperature this year averaged 35.8°, which is 5.3° below normal and ranks as the 14th coldest since 1895.

This was also the snowiest March statewide and in central NJ since 1993. The northern counties averaged 13.6" (which is 7.5" above normal), the central region was at 14.9" (+10.0"), and the southern counties 8.6" (+5.6"). The state as a whole averaged 11.5" (+7.2"), which is the 13th snowiest March on record. For the season through March snowfall statewide has averaged 34.5" (+8.4"), with the north 50.5" (+15.8"), central 41.4" (+14.4"), and south 22.3" (+2.3"). This is the northern division's first back-to-back 50"+ seasons since the winters of 1903/04 and 1904/05.

March rain and melted snow accumulated to a statewide average of 4.95". This is 0.72" above normal and ranks as the 32nd wettest.

It will come as no surprise to those reading this report that February 2015 was one of the coldest months on record in the Garden State. The average temperature of 22.0° (11.8° below average) made this month the 3rd coldest February and 6th coldest (tied) of any month since statewide records commenced in 1895. Colder Januaries include 1918 (19.9°), 1977 (20.2°), and 1912 (21.9°), with 1940 equal to this past February.

Statewide, melted snow, ice, freezing rain, and plain rain amounted to 2.34". This was 0.52" below average and ranks as the 32nd driest February. There were five events where snow fell to a depth of 2" or more at one or more locations, however there was no statewide "blockbuster" storm. NJ February snowfall averaged 12.3", which is 4.2" above normal. The northern third of the state averaged 16.3" (+6.2"), central area 12.6" (+3.6"), and southern third 10.1" (+3.5"). The ground remained snow covered throughout the month in northern and central regions, consistently at a depth exceeding 10" in the north and closer to 5" in central areas.