This can be explained by the fact that New Jersey has gotten warmer since the end of the 19th century. Compared to all Julys since , this past July was 1. Again, this might not seem like a large difference, however, given that temperatures do not vary from year to year nearly as much in summer as in winter, this change over the past century is notable.
Easterly winds blowing from the east typically move warmer water to the western Pacific near Indonesia , permitting cooler water to upwell to the surface in the east near South America. When these winds are weaker, or if they reverse direction, the warm water stays in the eastern Pacific. This difference in sea surface temperatures and winds creates a new dynamic between the ocean and atmosphere, distinctly affecting weather patterns across the world. 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. This was 4. It joined four other Junes in the past 13 years to rank in the top eight over this 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.
May was a warm and dry month across New Jersey. As the month ended, drought concerns were looming large, though rainfall in the north during the afternoon and evening of the 31st and continuing into the first days of June resulted in at least a temporary braking of the downward slide.
As those who have been reading these monthly narratives for some time now know, precipitation that falls at COOP stations after observation time on the last day of the month gets recorded as falling on the first day of the next month. Most COOP stations observe in the morning, thus the heavy showers that fell across north Jersey on the 31st were not factored into this May average, except for a few stations such as Newark Airport which registered 3.
The last time this situation had a notable impact on monthly rainfall was a daytime heavy rain event on April 30, Skip to main content.
Monday, November 8, - pm. Colorful foliage surrounding Lake Hopatcong Sussex County on October 31st, bringing a tranquil close to a turbulent end of October. Photo courtesy of Kelly Wallis. Read Full Story. Tonight A chance of showers, mainly after 1am. Friday Showers and possibly a thunderstorm before 1pm, then a chance of showers.
Friday Night Mostly clear, with a low around West wind around 5 mph becoming calm in the evening. Saturday A chance of showers, mainly after 1pm. Saturday Night Mostly clear, with a low around West wind 10 to 15 mph. Sunday Mostly sunny, with a high near Sunday Night Mostly cloudy, with a low around Monday A chance of showers before 1pm.
Monday Night Mostly clear, with a low around Tuesday Sunny, with a high near Tuesday Night Mostly clear, with a low around Wednesday Mostly sunny, with a high near Wednesday Night Partly cloudy, with a low around Thursday Partly sunny, with a high near Allamuchy Twp.
Atlantic , NJ Hamilton Twp. More News Unprecedented: September Recap. October 11, - pm. We saw this during this past winter. A boundary is simply a border or division line between two air masses. Boundaries can be either stationary or in motion.
Rain and thunderstorms like to form along boundaries so flooding is often common where boundaries are stationary. On weather maps, stationary boundaries are marked with alternating blue and red arrows.
A boundary in motion is also known as a frontal boundary. You commonly hear them referred to as fronts. A warm front is when a warmer air mass cT or mT moves over a colder air mass cP or mP.
These are marked with a red line and tiny arrows indicating direction of frontal movement. A cold front is the exact opposite and is probably what most of you are familiar with. Cold fronts are indicated by blue lines with tiny directional arrows as well. Since heat rises and cold sinks, cold fronts wedge themselves underneath warm air when passing through. Warm fronts do the opposite when pushing through cold air. They overtake instead of wedge beneath.
Continental polar masses do form during the summer, but usually. The area that is the most common source region for cold, dry air masses that move over New York State is central Canada. These cold, dry air masses are called Continental polar cP or continental arctic cA air masses. They can bring anything from tropical warm and humid days to arctic cold depending on the type of air mass. Fronts form the boundaries of air masses with differing properties. The most severe weather usually occurs when dry-cold continental polar air clashes with warm-humid maritime tropical air.
You will notice an area of higher pressures in the same region where these cP air-masses form. This high pressure allows for the homogeneous area an air-mass needs to form. Clouds are almost non-existent.
0コメント