![]() ![]() ![]() There were 128 in January, 56 in February, 195 confirmed in March, 160 in April, 126 in May, 210 in June, 83 in July and 65 so far in August. This is usually 24 hours' notice.The 2023 tornado season has been busy, with at least 1,238 preliminary reports of tornadoes and 1,028 tornadoes already confirmed in 2023 within the U.S. Siren repair - audible testing will only occur following a minimal time period needed to notify the media and public that a siren will be audibly tested.If the sirens are not audibly tested due to either of the above situations, the sirens will be audibly tested at the next regularly scheduled date and time.During times when thunderstorms are predicted in the area, or actually are in the area. ![]() ![]() The monthly audible siren test will last for one minute.Storm sirens will be audibly tested on the second Wednesday of each month at 1000 hours.Please listen to your NOAA Weather Radio or other info sources. Joplin does not sound an all-clear siren.Each siren activation indicates a tornado/high-speed wind event is approaching, or within, the City.The sounding of the sirens means "Seek Shelter, Seek Information!".See the YouTube Video link below for an example of how a siren sounds. This sequence (on for three minutes, off for three minutes) will be repeated until the danger has passed the City. The sirens sound a steady tone for three minutes, then will be off for three.Siren Activation to Warn of An Actual Severe Weather Event Or the National Weather Service reports a storm system producing life-threatening winds, And the storm path includes the City of Joplin.And the tornado path includes the City of Joplin.In Jasper County, Missouri Newton County, Missouri or Cherokee County, Kansas.The National Weather Service issues a tornado warning, ora trained spotter reports a tornado:.Please see below for specific information on the siren policy. All winds above certain speeds are potentially dangerous, and the City’s policy recognizes this fact: Outdoor sirens will be sounded to warn our citizens who are out of doors to go indoors and seek shelter from the wind. The City of Joplin activates the sirens for ANY wind event of sufficient speed, regardless of its label - tornado, high winds, straight-line winds, or a derecho (a widespread, long-lived, straight-line windstorm that is associated with a fast-moving band of severe thunderstorms). This comparison is one that City officials reviewed when establishing the basis for the storm siren policy (see below). It is imperative to sound the sirens for this type of high-speed wind activity as well, due to the potential for both property damage and threat to lives. In comparison, a severe thunderstorm is capable of producing winds of 70 to 80 miles per hour (mph) (or greater!) and can cover a width of several miles, which can encompass the entire City at some points. Everyone expects the sirens to be activated for any tornado, even a "small" one that is much less than a city block wide. An EF0 tornado, once on the ground, can be as small as 100 feet in width. Tornados range in size, based on wind speed, from an EF0 (65 miles per hour minimum) to an EF5 (200-plus MPH). Some may think of sirens as necessary just for tornado warnings, but it’s important to note that high-speed winds can be comparable to, or faster than, winds produced by a low-rated tornado. Obviously, this needs further explanation. Some people have asked, "During what kind of weather events are the sirens sounded?" The answer is, simply stated, "a high wind event". These days, outdoor sirens are used to warn of an impending locally severe weather event. In decades past these sirens were installed to warn citizens in the event of an attack on our nation by a foreign power. As a review, the sirens are outdoor warning devices that are used to alert people who are out of doors to go indoors and seek shelter. The City of Joplin is continually upgrading/improving its outdoor warning sirens. ![]()
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