National Weather Service Des Moines, based in Johnston, Iowa, USA, [1] is a weather forecast office serving the greater Des Moines, Iowa, region [2] as part of the National Weather Service.
National Weather Service Des Moines, based in Johnston, Iowa, USA, [1] is a weather forecast office serving the greater Des Moines, Iowa, region [2] as part of the National Weather Service.
The National Oceanic and Atmospheric Administration is a Washington, D.C.–based scientific and regulatory agency within the United States Department of Commerce, a United States federal government department. The agency is charged with forecasting weather, monitoring oceanic and atmospheric conditions, charting the seas, conducting deep sea exploration, and managing fishing and protection of marine mammals and endangered species in the U.S. exclusive economic zone.
Johnston is a city in Polk County, Iowa, United States. The population was 24,064 in the 2020 census, a large increase from the 8,649 population in 2000. It is part of the Des Moines–West Des Moines Metropolitan Statistical Area.
The National Weather Service (NWS) is an agency of the United States federal government that is tasked with providing weather forecasts, warnings of hazardous weather, and other weather-related products to organizations and the public for the purposes of protection, safety, and general information. It is a part of the National Oceanic and Atmospheric Administration (NOAA) branch of the Department of Commerce, and is headquartered in Silver Spring, Maryland, within the Washington metropolitan area. The agency was known as the United States Weather Bureau from 1890 until it adopted its current name in 1970.
NOAA Weather Radio (NWR), also known as NOAA Weather Radio All Hazards, is an automated 24-hour network of VHF FM weather radio stations in the United States that broadcast weather information directly from a nearby National Weather Service office. The routine programming cycle includes local or regional weather forecasts, synopsis, climate summaries or zone/lake/coastal waters forecasts. During severe conditions the cycle is shortened into: hazardous weather outlooks, short-term forecasts, special weather statements or tropical weather summaries. It occasionally broadcasts other non-weather related events such as national security statements, natural disaster information, environmental and public safety statements, civil emergencies, fires, evacuation orders, and other hazards sourced from the Federal Communications Commission's (FCC) Emergency Alert System. NOAA Weather Radio uses automated broadcast technology that allows for the recycling of segments featured in one broadcast cycle into another and more regular updating of segments to each of the transmitters. It also speeds up the warning transmitting process.
In meteorology, a heat burst is a rare atmospheric phenomenon characterized by a sudden, localized increase in air temperature near the Earth's surface. Heat bursts typically occur during night-time and are associated with decaying thunderstorms. They are also characterized by extremely dry air and are sometimes associated with very strong, even damaging, winds.
A tornado emergency is an enhanced version of a tornado warning, which is used by the National Weather Service (NWS) in the United States during imminent, significant tornado occurrences in highly populated areas. Although it is not a new warning type from the NWS, issued instead within a severe weather statement or in the initial tornado warning, a tornado emergency generally means that significant, widespread damage is expected to occur and a high likelihood of numerous fatalities is expected with a large, strong to violent tornado.
A satellite tornado is a tornado that revolves around a larger, primary tornado and interacts with the same mesocyclone. Satellite tornadoes occur apart from the primary tornado and are not considered subvortices; the primary tornado and satellite tornadoes are considered to be separate tornadoes. The cause of satellite tornadoes is not known. Such tornadoes are more often anticyclonic than are typical tornadoes and these pairs may be referred to as tornado couplets. Satellite tornadoes commonly occur in association with very powerful, large, and destructive tornadoes, indicative also of the strength and severity of the parent supercell thunderstorm.
National Weather Service Chicago, currently based in Romeoville, Illinois, is a weather forecast office responsible for monitoring weather conditions for 23 counties in Northern Illinois, the Chicago metropolitan area and Northwest Indiana. The Army Signal Service established the first federal weather office in the region in Chicago on October 15, 1870. During May 1894 the Chicago Weather Bureau was given a new forecast area extending from the Great Lakes region all the way to the Rocky Mountains. The current National Weather Service Chicago is located in Romeoville and is in charge of issuing local forecasts and weather warnings for the Chicago area. It is one of only two National Weather Service offices in Illinois, the other being National Weather Service Central Illinois in Lincoln, Illinois. The National Weather Service Chicago forecast office is located adjacent to the Lewis University Airport in Romeoville, Illinois.
The tornado outbreak of June 16–18, 2014, was a tornado outbreak concentrated in the Great Plains and the Midwestern United States. Two tornadoes also occurred in Ontario. The severe weather event most significantly affected the state of Nebraska, where twin EF4 tornadoes killed two and critically injured twenty others in and around the town of Pilger on the evening of June 16. The two Pilger tornadoes were part of a violent tornado family that produced four EF4 tornadoes and was broadcast live on television. The outbreak went on to produce multiple other strong tornadoes across the northern Great Plains states throughout the next two days.
A deadly tornado outbreak severely impacted the Southern United States, and also affected Iowa and Nebraska to a lesser extent, between November 27–30, 2016. The strongest tornadoes of the event affected Alabama and Tennessee during the late evening of November 29 and into the early morning hours of November 30. Overall, this outbreak produced 48 tornadoes, killed six people, and injured many others.
The Hurricane Dorian–Alabama controversy, also referred to as Sharpiegate, arose from a comment made by then U.S. President Donald Trump on September 1, 2019, as Hurricane Dorian approached the U.S. mainland. Mentioning states that would likely be impacted by the storm, he incorrectly included Alabama, which by then was known not to be under threat from the storm. After many residents of Alabama called the local weather bureau to ask about it, the bureau issued a reassurance that Alabama was not expected to be hit by the storm.
This page documents notable tornadoes and tornado outbreaks worldwide in 2020. Strong and destructive tornadoes form most frequently in the United States, Argentina, Brazil, Bangladesh, and eastern India, but can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, Argentina, Australia and New Zealand. Tornadic events are often accompanied by other forms of severe weather, including strong thunderstorms, strong winds, and hail.
As Hurricane Isaias moved up the East Coast of the United States, a damaging outbreak of 39 tornadoes impacted areas from South Carolina to Connecticut between August 3–4, 2020. The most significant tornado of the outbreak was a large and intense EF3 tornado that obliterated a mobile home park near Windsor, North Carolina, killing two and injuring 14. This was the strongest tornado in the United States to be spawned by a tropical cyclone since 2005. In the end, the outbreak killed two and injured 26.
National Weather Service Quad Cities is a National Weather Service forecast office. weather forecast office based in Davenport, Iowa. It is tasked with providing weather and emergency information to 21 counties in east-central and southeast Iowa, 13 counties in northwest and west-central Illinois, and two counties in extreme northeast Missouri.
On December 15, a rapidly-deepening low-pressure area contributed to a historic expanse of inclement weather across the Great Plains and Midwestern United States, resulting in an unprecedented December derecho and tornado outbreak across portions of the Northern United States, a region normally affected by snow and cold weather during this time of year. Non-thunderstorm winds spurred the formation of rapidly-moving fires across Colorado and western Kansas, with attendant dust and debris spreading eastward. From central Kansas northeastward into eastern Wisconsin, the powerful derecho led to hundreds of damaging wind reports. At least 57 hurricane-force wind reports were received by the National Weather Service, signaling the most prolific wind event in the United States dating back to at least 2004. Numerous embedded circulations within this rapidly-progressing derecho produced dozens of tornadoes, including 33 that were rated EF2. The culmination of non-thunderstorm, thunderstorm, and tornadic winds caused widespread damage to structures, trees, power lines, and vehicles across the Plains and Midwest. At least 600,000 people lost power on December 15, and temperatures dropped significantly across the affected region following the event, causing accumulating snow, which hindered cleanup and recovery efforts. The storm killed at least 5 people directly, as well as 2 people indirectly through wildfires partly spawned by the storm, and caused at least $1.8 billion in damages. The number of tornadoes in this event broke a record for largest outbreak in the month of December that had been set less than a week prior. The event also became one of the largest single-day outbreaks in recorded history, with 120 tornadoes occurring over an eight-hour period.
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