Monsoon 2014 - Tucson News Now

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Lull in the tropics not good for the monsoon

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However a wave of tropical energy from the other side of the globe is forecast to ramp up tropical action again next month.

Monsoon storms cause millions in damage in Nogales, Sonora

Source: Facebook; Lety Molina Source: Facebook; Lety Molina
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Our neighboring city south of the border is still reeling from recent monsoon storms. A week ago today, the roads of Nogales, Sonora, Mexico, looked more like raging rivers; sweeping cars away and flooding downtown businesses.Powerful thunderstorms caused havoc there and an estimated 51 million pesos in damage; that's nearly $4-million U.S. dollars. The "El Imparcial" newspaper reports the vast majority of that is street damage. The rain came down hard and fast with just over two inches falli...

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  • Monsoon 101: Madden-Julian Oscillation

    Monsoon 101: Madden-Julian Oscillation

    Thursday, June 26 2014 1:20 PM EDT2014-06-26 17:20:10 GMT
    A wave of tropical energy called the Madden-Julian Oscillation (MJO) can affect monsoon action here in Arizona.  The MJO originates in the Indian Ocean and then travels east, across the Pacific Ocean.
    The MJO originates in the Indian Ocean and then travels east, across the Pacific Ocean. This wave enhances tropical storm in the ocean waters off the west coast of Mexico. This can them ramp up the monsoon in Arizona. 
  • Monsoon 101: Funnel clouds and monsoon storms

    Monsoon 101: Funnel clouds and monsoon storms

    Thursday, June 26 2014 12:48 PM EDT2014-06-26 16:48:47 GMT
    During the Monsoon, funnel clouds sometimes greet southern Arizona, creating a unique spectacle in the sky. When the Monsoon flow, which comes from the tropics, is moving very rapidly, wind aloft will
    Creating a spectacle in the sky, monsoon storms can sometimes spawn funnel clouds. Here's why and how.
  • Tornado? NO! It's a Gustnado!

    Tornado? NO! It's a Gustnado!

    Thursday, June 26 2014 12:45 PM EDT2014-06-26 16:45:33 GMT
    A viewer caught on camera what appears to be a gustnado in Pinal County on Monday.  Check out the See It, Snap It, Send It below.  A gustnado may look like a tornado, but it forms a bit differently.  A
    A gustnado forms with the help of gusty storm winds blowing out ahead of the storm.
  • Why is dew point important to the monsoon?

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    Wednesday, June 18 2014 11:08 PM EDT2014-06-19 03:08:03 GMT
    Warm, moist tropical air is needed for monsoon storms to get going over Southeast Arizona.  That is why we track the dew point numbers very closely this time of year. When dew points are below 54°, the
    Why are the dew points important to the monsoon?
  • Monsoon 101: Gulf Surges

    Monsoon 101: Gulf Surges

    Tuesday, June 17 2014 1:10 PM EDT2014-06-17 17:10:04 GMT
    Surges of moisture up the Gulf of California, through Rocky Point and into Arizona help enhance Monsoon storm development. They happen when clusters of thunderstorms or even dying tropical systems get
    Gulf surges help enhance rainfall in Arizona. Here's how they form.
  • Monsoon 101: Mogollon Rim Storms

    Monsoon 101: Mogollon Rim Storms

    Tuesday, June 17 2014 1:09 PM EDT2014-06-17 17:09:29 GMT
    When storms from the Mogollon Rim aim toward Tucson, they frequently bring with them damaging wind. Unlike a "typical" Monsoon day, where storms are moving very slowly, when the "Mogollon Rim" pattern
    Here's how some of the most destructive Monsoon storms form.
  • Monsoon 101: Wet Microbursts

    Monsoon 101: Wet Microbursts

    Tuesday, June 17 2014 1:08 PM EDT2014-06-17 17:08:28 GMT
    Microbursts are made of wind rushing down to the ground. Once the wind hits the ground, it spreads in all directions. Wind speeds in a microburst can be 60-100mph, damaging roofs, snapping trees and knocking
    Wet microbursts typically happen in late July and August, leaving flooding and damage in their wake.
  • Monsoon 101: Dry Microbursts

    Monsoon 101: Dry Microbursts

    Tuesday, June 17 2014 1:08 PM EDT2014-06-17 17:08:06 GMT
    Microbursts are common in southern Arizona during the Monsoon. They often take down power poles, leaving us in the dark and without air conditioning during the hottest part of the summer! First, it's important
    Microbursts are common in southern Arizona during the Monsoon. They often take down power poles, leaving us in the dark and without air conditioning during the hottest part of the summer! First, it's important
  • Monsoon 101: Arizona Haboobs

    Monsoon 101: Arizona Haboobs

    Tuesday, June 17 2014 1:07 PM EDT2014-06-17 17:07:33 GMT
    "Haboob" is an Arabic word referring to a giant dust storm. Unlike a localized event of blowing dust, these clouds of dust can overcome metropolitan areas of millions of people, snarling traffic and closing
    Learn about these mammoth dust storms that can encompass entire metro areas in minutes, all started from monsoon storms!
  • What is the 'Stupid Motorist Law'?

    What is the 'Stupid Motorist Law'?

    Monday, June 16 2014 11:25 PM EDT2014-06-17 03:25:08 GMT
    Many of us have heard about the 'Stupid Motorist Law'. I know the basic theory of the law, but the exact wording was not something I had looked into recently.  I decided to post what the law says because
    Check out See It, Snap It, Send It video of two trucks driving through a flooded wash and find out why, even if they did get stuck, they would not be charged with the law.
  • Why do we say 'monsoon'?

    Why do we say 'monsoon'?

    Friday, June 13 2014 1:09 PM EDT2014-06-13 17:09:12 GMT
    The monsoon is a singular word that describes all the storms that form during the summer. Monsoon is derived from the Arabic word "mausim" which means "season" or "wind-shift".  The wind shift refers
    Monsoon is derived from the Arabic word "mausim" which means "season" or "wind-shift".
  • Tracking the rise and fall of flash floods

    Tracking the rise and fall of flash floods

    Thursday, July 11 2013 10:07 PM EDT2013-07-12 02:07:10 GMT
    Flash Flood Warnings are issued for an area by the local National Weather Service Office.  In Tucson, that office is located on the University of Arizona campus.  The meteorologists on duty at the time
    The extremes of flash floods can be seen on streamflow gauges located across the area.
  • Monsoon 101: Setting up the Monsoon

    Monsoon 101: Setting up the Monsoon

    Thursday, June 26 2014 12:42 PM EDT2014-06-26 16:42:36 GMT
    By Erin Jordan - bio | email | Facebook | Twitter TUCSON, AZ (KOLD) - To begin the North American Monsoon, there needs to be two key features in place in the atmosphere. The first is the Monsoon High.
    To begin the North American Monsoon, there needs to be two key features in place in the atmosphere.
  • Monsoon 101: The Inverted Trough

    Monsoon 101: The Inverted Trough

    Thursday, June 26 2014 12:40 PM EDT2014-06-26 16:40:43 GMT
    Inverted troughs, also known as easterly waves in the tropics, are one of the factors that increase the chance of monsoon storms.  Tracking hurricanes in both the Atlantic and East Pacific, you will notice
    The inverted troughs that reach eastern Mexico travel west over the country with the tip of the inverted trough sometimes close enough to southern Arizona to increase afternoon storm chances.
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