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September 21, 2018

Micro Burst Helped Push July’s Precipitation Above Average


OSWEGO, NY – July 2014 was a cooler than average month punctuated with above average precipitation thanks to a brief but violent storm, according to Bill Gregway, local observer for the National Weather Service.

The average temperature last month was 69.0 degrees. That is 1.8 degrees below normal.

A violent storm in early July downed trees, taking fences with them, and seriously damaged many structures as well.

A violent storm in early July downed trees, taking fences with them, and seriously damaged many structures as well.

There were no 90s and no records.

The highest temperature last month was 89 degrees on the 1st and the lowest was 52 on the 11th.

There were 8 days where it was 80 degrees or above.

The overnight low was in the 50s 14 times and it was in the 70s 2 times (the 1st – 73 degrees and the 2nd – 70 degrees).

It was the 6th coolest July since 1969; since 1844 it only ranks as the 17th coolest, Gregway noted.

Last month was the coolest since 2009 when it was 67.2 degrees.

Some other recent cool Julys include 68.5 degrees in 2000, 68.8 degrees in 2004, 69.0 degrees in 2001, and 69.2 degrees in 2007.

Total precipitation was 5.81 inches. That is 2.78 inches above average,

The greatest precipitation in a 24-hour period was 1.48 inches on the 28th. That was closely followed by 1.36 inches on the 27th.

In 30 hours, over July 27 and 28, there was 2.84 inches of precipitation.

Since the first of the year, total precipitation stands at 24.62 inches. That is 1.70 inches above average.

“It’s just the 3rd time this year we’ve been above normal,” Gregway said. “February and April were above average, the rest were all below.”

There were 12 days of measurable precipitation, with 3 being consecutive.

There were 3 days of a trace.

And, no precipitation fell on 16 days with runs of 4 and 3 days in a row.

The number of cloudy days, 9, was 3 below average.

The number of partly cloudy days, 15, was 2 above average.

The number of clear days, 7, was 1 above average.

The area saw 61 percent of the possible amount of sunshine. That is 8 percentages below average.

There were 8 thunderstorms, which is 2 above average.

There were no foggy days, which is average.

The highest barometric pressure was 30.27 on the 5th and the lowest was 29.46 on the 8th.

“The strongest winds were southwesterly greater than 40 mph on the 8th in the path of the storm,” Gregway said. “At times they were probably greater than 50 mph. There was a micro burst with damaging winds, especially on the east side of the city, with heavy rains.”

The storm caused thousands of dollars worth of damage. Several trees were destroyed and in some places, parts of buildings were blown away.

We also had northerly winds greater than 30 mph on the 28th, Gregway added.

“Last year, the average temperature for July was 73.0 degrees. We had 2 days in the 90s. We tied a high record and set a record low,” Gregway said. “There were 15 days in the 80s with 7 of them in a row.”

It tied with 1931 for the 16th warmest July on record.

Precipitation was 1.30 inches above average.

The driest July on record is 1853 with just 0.13-inch. The wettest is 1992 with 9.35 inches.

July of 1891 is the coolest on record with an average temperature of 64.6 degrees. The warmest is 75.8 degrees in 1921.

July also holds the honor of having the only 100 degree reading in Oswego. It happened on July 1, 1878.

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