JetStream | National Oceanic and Atmospheric Administration

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node--type-landing-page node--promoted node--non-sticky-sidebar node--display-mode-full c-article"> <div> <h2 class="node-subtitle field"> <div class="c-field c-field--name-field-subtitle c-field--type-string-long c-field--label-hidden"> <div class="c-field__content"><div class="c-field__item">JetStream - An Online School for Weather<br /> <br /> Welcome to JetStream, the National Weather Service Online Weather School. This site is designed to help educators, emergency managers, or anyone interested in learning about weather and weather safety.</div></div></div> </h2> </div> <div class="noaa-content-sidebar-wrapper"> <div class="l-right-sidebar-top-node"> <div class="sticky-wrapper"></div> <div class="non-sticky-wrapper"> <div id="block-rightsidebar" class="c-block"> <div class="c-block__content"> <ul data-region="right_sidebar" class="menu menu--right-sidebar" id="menu--right-sidebar"> <li class="menu__item is-active-trail open"> <a href="/jetstream" class="menu__link is-active-trail is-active" data-drupal-link-system-path="node/8001" aria-current="page">JetStream Topics</a> </li> </ul> </div> </div> <div class="block-noaanodesidebarcontent c-block c-block--provider-noaa-core c-block--id-noaa-core-field-sidebar-content"> <div class="c-block__content"> <div class="c-field c-field--name-field-sidebar-content c-field--type-entity-reference-revisions c-field--label-hidden"> <div class="c-field__content"><div class="c-field__items"><div class="c-field__item"> <section class="l-section paragraph paragraph--type-link-list paragraph--display-mode-default paragraph--width-body-indent-none collapsed" data-observe-resizes > <div class="l-section__content"> <div id="paragraph-id-7388"> <div class="always-visible-items"> <div class="link-list-item"><a href="/jetstream/atmosphere">The Atmosphere</a></div> <div class="link-list-item"><a href="/jetstream/ocean">The Ocean</a></div> <div class="link-list-item"><a href="/jetstream/global">Global Weather</a></div> <div class="link-list-item"><a href="/jetstream/clouds">Clouds</a></div> <div class="link-list-item"><a href="/jetstream/upperair">The Upper Air</a></div> <div class="link-list-item"><a href="/jetstream/upper-air-charts">Upper Air Charts</a></div> <div class="link-list-item"><a href="/jetstream/synoptic">Synoptic Meteorology</a></div> <div class="link-list-item"><a href="/jetstream/satellites">Satellites</a></div> <div class="link-list-item"><a href="/jetstream/doppler">Doppler Radar</a></div> <div class="link-list-item"><a href="/jetstream/tropical">Tropical Weather</a></div> <div class="link-list-item"><a href="/jetstream/thunderstorms">Thunderstorms</a></div> <div class="link-list-item"><a href="/jetstream/lightning">Lightning</a></div> <div class="link-list-item"><a href="/jetstream/derechos">Derechos</a></div> <div class="link-list-item"><a href="/jetstream/tsunamis">Tsunamis</a></div> <div class="link-list-item"><a href="/jetstream/nws_intro">The National Weather Service</a></div> <div class="link-list-item"><a href="/jetstream/appendix">Appendix</a></div> </div> </div> </div> </section> </div></div></div></div> </div> </div> </div> </div> <div class="l-right-sidebar-top-content-sibling"> <div class="non-sticky-wrapper"> <div id="block-rightsidebar" class="c-block"> <div class="c-block__content"> <ul data-region="right_sidebar" class="menu menu--right-sidebar" id="menu--right-sidebar"> <li class="menu__item is-active-trail open"> <a href="/jetstream" class="menu__link is-active-trail is-active" data-drupal-link-system-path="node/8001" aria-current="page">JetStream Topics</a> </li> </ul> </div> </div> <div class="block-noaanodesidebarcontent c-block c-block--provider-noaa-core c-block--id-noaa-core-field-sidebar-content"> <div class="c-block__content"> <div class="c-field c-field--name-field-sidebar-content c-field--type-entity-reference-revisions c-field--label-hidden"> <div class="c-field__content"><div class="c-field__items"><div class="c-field__item"> <section class="l-section paragraph paragraph--type-link-list paragraph--display-mode-default paragraph--width-body-indent-none collapsed" data-observe-resizes > <div class="l-section__content"> <div id="paragraph-id-7388"> <div class="always-visible-items"> <div class="link-list-item"><a href="/jetstream/atmosphere">The Atmosphere</a></div> <div class="link-list-item"><a href="/jetstream/ocean">The Ocean</a></div> <div class="link-list-item"><a href="/jetstream/global">Global Weather</a></div> <div class="link-list-item"><a href="/jetstream/clouds">Clouds</a></div> <div class="link-list-item"><a href="/jetstream/upperair">The Upper Air</a></div> <div class="link-list-item"><a href="/jetstream/upper-air-charts">Upper Air Charts</a></div> <div class="link-list-item"><a href="/jetstream/synoptic">Synoptic Meteorology</a></div> <div class="link-list-item"><a href="/jetstream/satellites">Satellites</a></div> <div class="link-list-item"><a href="/jetstream/doppler">Doppler Radar</a></div> <div class="link-list-item"><a href="/jetstream/tropical">Tropical Weather</a></div> <div class="link-list-item"><a href="/jetstream/thunderstorms">Thunderstorms</a></div> <div class="link-list-item"><a href="/jetstream/lightning">Lightning</a></div> <div class="link-list-item"><a href="/jetstream/derechos">Derechos</a></div> <div class="link-list-item"><a href="/jetstream/tsunamis">Tsunamis</a></div> <div class="link-list-item"><a href="/jetstream/nws_intro">The National Weather Service</a></div> <div class="link-list-item"><a href="/jetstream/appendix">Appendix</a></div> </div> </div> </div> </section> </div></div></div></div> </div> </div> </div> </div> <div class="non-sidebar-content"> <div class="c-field c-field--name-field-body c-field--type-entity-reference-revisions c-field--label-hidden"> <div class="c-field__content"><div class="c-field__items"><div class="c-field__item"> <section class="l-section paragraph paragraph--type-rich-text paragraph--display-mode-default paragraph--width-body-indent-none" data-observe-resizes > <div class="l-section__content"> <div id="paragraph-id-29561"> <div class="c-field c-field--name-field-body-formatted-long c-field--type-text-long c-field--label-hidden"> <div class="c-field__content"><div class="c-field__item"><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <html><body><p><span style="font-size:24px;">Questions or comments? Please email <a href="mailto:JetStream@noaa.gov">JetStream@noaa.gov</a>.</span></p> </body></html> </div></div></div> </div> </div> </section> </div><div class="c-field__item"> <section class="l-section paragraph paragraph--type-rich-text paragraph--display-mode-default paragraph--width-body-indent-none" data-observe-resizes > <div class="l-section__content"> <div id="paragraph-id-7387"> <div class="c-field c-field--name-field-body-formatted-long c-field--type-text-long c-field--label-hidden"> <div class="c-field__content"><div class="c-field__item"> <html><body><figure role="group"> <article data-caption="1"> <div class="c-field c-field--name-field-media-image c-field--type-image c-field--label-hidden"> <div class="c-field__content"><div class="c-field__item"> <img loading="lazy" src="/sites/default/files/2021-08/211008-JetStream.jpg" width="850" height="670" alt="JetStream - An Online School for Weather" title="JetStream - An Online School for Weather"> </div></div></div> </article> <figcaption><div class="image-download"> <div>A cloud-filled sky, rugged islands, and turbulent air joined to create fanciful designs in the atmosphere in late July 2019. The Moderate Resolution Imaging Spectroradiometer (MODIS) on board NASA鈥檚 Terra satellite acquired a true-color image of cloud vortices off of the Canary Islands on July 22.</div> <div> </div> <div>These particular types of swirling patterns are known as von K谩rm谩n vortices. Named after Theodore von K谩rm谩n, the Hungarian-American physicist who was the first to describe the physical processes that create the long chains of spiral eddies, these shapes can form nearly anywhere that the flow of fluid or air is disturbed by a stationary object.</div> <div> </div> <div>In this case, driving wind rushes past the tall peaks on the rugged Canary Islands. As the winds are diverted around the high areas, turbulence is created, and the disturbance in the flow continues downstream in the form of rows of vortices that alternate their direction of rotation. <a href="https://www.noaa.gov/sites/default/files/2023-01/JetStream-NASA-image.jpg">High resolution version of this NASA image: select link to enlarge image (~2 mb)</a>. Credit: Jeff Schmaltz, <a href="https://modis.gsfc.nasa.gov/index.php">Moderate Resolution Imaging Spectroradiometer</a> (MODIS) Land Rapid Response Team, National Aeronautics and Space Administration (NASA), Goddard Space Flight Center (GSFC).</div> </div></figcaption> </figure> <p>The information contained in JetStream is arranged by subject, beginning with global and large-scale weather patterns followed by lessons on air masses, wind patterns, cloud formations, thunderstorms, lightning, hail, damaging winds, tornados, tropical storms, cyclones, and flooding. Interspersed in JetStream are "Learning Lessons" which can be used to enhance the educational experience.</p> <p>You are free to use the materials in any manner you wish. We welcome your feedback on this project. Your input will greatly assist others in teaching the "hows" and "whys" of weather. Not sure where to begin? Click to see all topics in JetStream in the <a href="https://www.noaa.gov/jetstream/topic-matrix" media_library="File Library">Topic Matrix</a>.</p> </body> </html></div></div></div> </div> </div> </section> </div><div class="c-field__item"> <section class="l-section paragraph paragraph-float-enabled paragraph--type-about paragraph--display-mode-default paragraph--width-body-indent-none" data-observe-resizes > <div class="l-section__content"> <div id="paragraph-id-9430"> <div class="layout layout--twocol-section layout--twocol-section--33-67 float-side-left"> <div class="layout__region layout__region--first"> <div class="content-float-wrapper image-crop-width-circle-650"> <img alt="JetStream - An Online School for Weather" title=" JetStream - An Online School for Weather" src="/sites/default/files/styles/square_width_650/public/2021-08/211008-JetStream.jpg?itok=NwPFOwUj" width="650" height="650" loading="lazy" /> </div> </div> <div class="layout__region layout__region--second"> <div class="about-title">About JetStream</div> <div class="about-text"> <div class="c-field c-field--name-field-body-formatted-long c-field--type-text-long c-field--label-hidden"> <div class="c-field__content"><div class="c-field__item"><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <html><body><p>The National Weather Service understands the critical value of fast, accurate weather and water information. We know that information is power – the power to save your life or the lives of your loved ones.</p> <p>JetStream Online School for Weather provides educators, emergency managers, or anyone interested in learning about weather and water with comprehensive, well-organized, colorfully illustrated curricula designed to help teach about the wonders and dangers that abound in the Earth's atmosphere.</p> </body></html> </div></div></div> </div> <div class="about-links"> <div class="about-link"><a href="/jetstream/about">Learn more about JetStream</a></div> <div class="about-link"><a href="/jetstream/about/contact-jetstream">Contact us</a></div> </div> </div> </div> </div> </div> </section> </div></div></div></div> <div class="l-right-sidebar-bottom-node"> <div id="block-rightsidebar-0" class="c-block"> <div class="c-block__content"> <ul data-region="right_sidebar" class="menu menu--right-sidebar" id="menu--right-sidebar-0"> <li class="menu__item is-active-trail open"> <a href="/jetstream" class="menu__link is-active-trail is-active" data-drupal-link-system-path="node/8001" aria-current="page">JetStream Topics</a> </li> </ul> </div> </div> <div class="block-noaanodesidebarcontent c-block c-block--provider-noaa-core c-block--id-noaa-core-field-sidebar-content"> <div class="c-block__content"> <div class="c-field c-field--name-field-sidebar-content c-field--type-entity-reference-revisions c-field--label-hidden"> <div class="c-field__content"><div class="c-field__items"><div class="c-field__item"> <section class="l-section paragraph paragraph--type-link-list paragraph--display-mode-default paragraph--width-body-indent-none collapsed" data-observe-resizes > <div class="l-section__content"> <div id="paragraph-id-7388-0"> <div class="always-visible-items"> <div class="link-list-item"><a href="/jetstream/atmosphere">The Atmosphere</a></div> <div class="link-list-item"><a href="/jetstream/ocean">The Ocean</a></div> <div class="link-list-item"><a href="/jetstream/global">Global Weather</a></div> <div class="link-list-item"><a href="/jetstream/clouds">Clouds</a></div> <div class="link-list-item"><a href="/jetstream/upperair">The Upper Air</a></div> <div class="link-list-item"><a href="/jetstream/upper-air-charts">Upper Air Charts</a></div> <div class="link-list-item"><a href="/jetstream/synoptic">Synoptic Meteorology</a></div> <div class="link-list-item"><a href="/jetstream/satellites">Satellites</a></div> <div class="link-list-item"><a href="/jetstream/doppler">Doppler Radar</a></div> <div class="link-list-item"><a href="/jetstream/tropical">Tropical Weather</a></div> <div class="link-list-item"><a href="/jetstream/thunderstorms">Thunderstorms</a></div> <div class="link-list-item"><a href="/jetstream/lightning">Lightning</a></div> <div class="link-list-item"><a href="/jetstream/derechos">Derechos</a></div> <div class="link-list-item"><a href="/jetstream/tsunamis">Tsunamis</a></div> <div class="link-list-item"><a href="/jetstream/nws_intro">The National Weather Service</a></div> <div class="link-list-item"><a href="/jetstream/appendix">Appendix</a></div> </div> </div> </div> </section> </div></div></div></div> </div> </div> </div> </div> </div> </article> </div> </div> </main> <footer class="l-footer content-footer" role="contentinfo"> <div class="l-footer-content"> <div class="l-constrain"> <div id="block-noaacontentfooter" class="c-block c-block--provider-noaa-core c-block--id-noaa-core-content-footer"> <div class="c-block__content"> <div class="last-updated">Last updated October 27, 2023</div><div class="problem-with-page"><a href="/noaa_landing_page/comment_modal?email=JetStream%40noaa.gov&url=https%3A%2F%2Fwww.noaa.gov%2Fjetstream" class="use-ajax" data-dialog-type="modal">Have a comment on this page? 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