<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="" style="font-family: Optima-Regular;">A space weather community workshop will be held on April 23, 2019 at the Sheraton Denver West. </div><div class="" style="font-family: Optima-Regular;"><br class=""></div><div class="" style="font-family: Optima-Regular;">The purpose is to gather input to help guide the development of benchmarks for extreme space weather events as called out in the The National Space Weather Strategy and Action Plan. (<a href="https://www.whitehouse.gov/wp-content/uploads/2019/03/National-Space-Weather-Strategy-and-Action-Plan-2019.pdf" class="">https://www.whitehouse.gov/wp-content/uploads/2019/03/National-Space-Weather-Strategy-and-Action-Plan-2019.pdf</a>)</div><div class="" style="font-family: Optima-Regular;"><br class="">The workshop is free but registration is required. (<a href="http://www.cvent.com/events/registration-for-public-session-on-april-23-2019/event-summary-bc09c5c5867f4f17823d7409b0b93e46.aspx" class="">http://www.cvent.com/events/registration-for-public-session-on-april-23-2019/event-summary-bc09c5c5867f4f17823d7409b0b93e46.aspx</a>)</div><div class="" style="font-family: Optima-Regular;"><br class="">Written input can also be provided through our request for community input (<a href="https://www.ida.org/STPI/ExploreSTPIResearch/SpaceWeather" class="">https://www.ida.org/STPI/ExploreSTPIResearch/SpaceWeather</a>) </div><div class="" style="font-family: Optima-Regular;">or by email: <a href="mailto:swx@ida.org" class="">swx@ida.org</a> or <a href="mailto:Geoff@ReevesResearch.org" class="">Geoff@ReevesResearch.org</a></div><div class="" style="font-family: Optima-Regular;"><br class="">The Space Weather Phase 1 Benchmarks study provides estimates of the characteristics of extreme space weather events. Specifically, it seeks to define the 1-in-100-year and theoretical maximum events for five phenomena<br class="">• induced geo-electric fields<br class="">• ionizing radiation<br class="">• ionospheric disturbances<br class="">• solar radio bursts, and<br class="">• upper atmosphere expansion (drag).<br class="">(<a href="https://www.sworm.gov/publications/2018/Space-Weather-Phase-1-Benchmarks-Report.pdf" class="">https://www.sworm.gov/publications/2018/Space-Weather-Phase-1-Benchmarks-Report.pdf</a>)<br class=""><br class="">We request community input to:<br class="">1) identify new research or data sets that may be used to improve the benchmark values<br class="">2) identify gaps in existing data sets and methodologies that hinder the production of high-confidence benchmark values; and<br class="">3) suggest future research activities that may close the identified gaps.<br class=""><br class="">Inputs are solicited from both the space weather research and the operations/user communities. </div></body></html>