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The northern lights may be visible from states along the U.S.-Canadian border overnight on Monday, June 29, into Tuesday, June 30.<\/p>\n
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The northern lights<\/a> may be visible overnight from a few northern states along the U.S.-Canadian border on Monday, June 29, into Tuesday, June 30. A coronal mass ejection \u2014 a cloud of charged particles \u2014 left the sun late on June 26 in Earth\u2019s direction, with NASA models forecasting its arrival on Earth. It could cause up to a G2-class geomagnetic storm, which could mean aurora being seen on the northern horizon from U.S. states close to the border with Canada \u2014 most likely across parts of Montana, North Dakota, Minnesota and northern Wisconsin.<\/p>\n Long daylight hours in the wake of last week\u2019s solstice<\/a>, coupled with the rising on Monday, June 29, of the full Strawberry Moon<\/a> in the south, may make aurora harder to see.<\/p>\n ForbesFull Moon June 2026: When To See The \u2018Strawberry Moon\u2019 RiseBy Jamie Carter<\/a>Northern Lights Forecast: What To Expect<\/p>\n A G1 or G2-rated geomagnetic storm is not a major aurora outbreak forecast. However, KP 4 or KP5 conditions can sometimes bring visible northern lights to the far northern tier of the U.S., especially near the Canadian border.<\/p>\n If the skies are clear, aurora watchers should look north, avoid bright lights, and use long-exposure settings on their phones or cameras. Cameras often detect faint aurora before the human eye can see color clearly. Here\u2019s how to photograph the northern lights using a phone<\/a>.<\/p>\n The nine states with the best chance include the northern parts of Washington, Idaho, Montana, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan and Maine. It\u2019s also possible that aurora will be glimpsed from Oregon, Wyoming, Nebraska, Iowa, Illinois, Indiana, Ohio, New York, Vermont and New Hampshire. <\/p>\n Forbes50 Days To A Total Solar Eclipse \u2014 Where And When To Experience ItBy Jamie Carter<\/a>Aurora Alert: Incoming CME<\/p>\n A CME is a cloud of charged particles often created by solar flares. Unlike solar flares, which travel at light speed, CMEs move at up to 1,900 miles (3,000 kilometers) per second and take a few days to travel across the solar system. If they are Earth-directed, they can produce geomagnetic storms and auroras.<\/p>\n According to SpaceWeather.com<\/a>, this CME could spark a G1-class geomagnetic storm when it reaches Earth. According to a forecast<\/a> by space weather experts at the National Oceanic and Atmospheric Administration, \u201cEnhanced conditions are expected to return early to mid on 30 Jun due to the CME that left the Sun late on 26 Jun.\u201d<\/p>\n A UK Met Office forecast slightly ups the ante. \u201cCME arrival on day 3 is expected to increase activity to Active to G1 Minor Storms with a chance of G2 Moderate Storms,\u201d states the UK Met Office\u2019s Space Weather forecast<\/a>. \u201cThese most likely with any following magnetic cloud, with the risk continuing into day 4 (01 Jul).\u201d<\/p>\n Space weather can change rapidly, with forecasts revised frequently.<\/p>\n Forbes7 Spectacular Stargazing Events To See This SummerBy Jamie Carter<\/a>Northern Lights Alert: Latest Updates<\/p>\n To check visibility in real time, use NOAA\u2019s 30-minute aurora forecast<\/a> or download apps such as Aurora Now, My Aurora Forecast or Glendale Aurora for up-to-the-minute alerts and live solar wind data.<\/p>\n Whether aurora displays materializes largely depends on the interplanetary magnetic field, specifically its Bz component (you\u2019ll find it in some of the above apps and on SpaceWeatherLive.com<\/a>). Bz determines how easily solar energy enters Earth\u2019s magnetosphere. When Bz points north, Earth\u2019s field resists it; when Bz swings south, the two fields connect, allowing plasma to stream in. A sustained southward Bz of \u22125 nT or stronger usually signals an imminent display of aurora.<\/p>\n