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Tucson's top 4 weather stories of 2017 - KVOA | KVOA.com | Tucson, Arizona

Tucson's top 4 weather stories of 2017

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TUCSON – Let the debate begin!

4WARN Meteorologist Jeff Beamish has compiled his yearly list of Tucson’s biggest weather stories. While many events were noteworthy, here are the four that stood out from the rest.

#4 - Marana tornado on July 14

For the first time since August 29th, 2015, a tornado touched down in Metro Tucson.

The landspout tornado was spotted near Rancho Marana the evening of July 14th. No damage was reported. After a storm survey, the National Weather Service gave the tornado an EF0 rating, estimating winds around 65 MPH.

Since 1950, 21 tornadoes have touched down within a 30 mile radius of Tucson International Airport.

#3 - Warmest year…again!

Records are meant to be broken. Repeatedly.

The average temperature for Tucson in 2017 is on track to be 73.2°, which would be the warmest year on record. This year’s average temperature likely beats the 2014 and 2016 record by over a full degree.

So why is this only the third biggest weather story of the year? Three of the last four years have been the warmest on record for the Old Pueblo. It’s been happening a lot lately.

#2 - Epic July rainfall

How incredible was Tucson’s July rainfall? The 6.80” rain that fell in the last three weeks in July ended up accounting for 79% of this year’s Monsoon total.

Suffice to say, Tucson had its wettest July on record. It’s also the second wettest month ever recorded in Tucson, trailing the 7.93” rain in August 1955.

One more interesting note about the July gullywasher. On July 15th, a series of nighttime storms dropped 1.45” rain. 1.36” fell in only one hour, breaking the old daily record of 1.12”. This was only the 26th time Tucson broke a daily rainfall record in one hour.

#1 - Hottest day ever recorded on June 20th

Weather record keeping for Tucson started in 1894. Through June 19th, 2017, not one day featured an average daily temperature at or above 100°.

A day later, an all-time record.

The day started with a morning low of 87°, which is the warmest June low temperature ever recorded. Later in the day, the mercury peaked at a scorching 116°, good for Tucson’s 2nd hottest recorded high temperature.

Between the daytime high and morning low, Tucson's average temperature on June 20th was 101.5°, becoming the first time Tucson has ever recorded an average daily temperature at or above 100°.

But what about June 26th, 1990? That's when Tucson recorded its hottest daytime high, reaching 117°. The low temperature that morning was 80°, putting the average daily temperature at 98.5°.

Honorable mentions: July 24th flash flood in Tanque Verde Falls, Sawmill Fire in the Santa Rita Mountains, Burro Fire forces evacuation of Summerhaven, January 21st blizzard on Mount Lemmon, warmest Fall on record, average Tucson Winter temp warmer than Phoenix, August 21st solar eclipse

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