Category Archives: Alerts

G2 Storm Watch Posted For Early August

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Northern Lights Now – A large polar-connected coronal hole will bring high speed solar wind to Earth starting August 4th and SWPC has posted a G2 geomagnetic storm watch. The watch means it is possible that aurora activity as measured by KP may reach 5.67 during the August 4th UTC day (from 8pm EST on 8/3 through 8pm EST on 8/4). The watch period extends into August 5th at a slightly lower activity level with G1 storming predicted.

The coronal hole responsible for this activity is large. It extends from the polar region to the Southern Hemisphere of the Sun:

Large Coronal Hole Pointed towards Earth on August 1st
Large Coronal Hole Pointed towards Earth on August 1st

Earth is expected to travel through the area of high speed solar winds sometime on Friday. Any disturbances carried on the wind stream with a negative oriented Bz could make for strong aurora activity. Keep any eye on the solar wind data, there should be a period of increased activity in Bt and Bz before the actual arrival.

The current timing and forecast for this storm calls for the G1 and G2 storming late on the 4th followed by G1 storming through midday on the 5th as winds subside. As always, these forecasts can be +/-12 hours, so the best bet is to keep an eye on the data or the Northern Lights Now Twitter feed, to know when it is best to go out.

AuroraCast clock shows the predicted times for G1 and G2 aurora August 4th and 5ht
AuroraCast clock shows the predicted times for G1 and G2 aurora August 4th and 5ht

The Moon is waxing gibbous – which means it will be visible and bright in the evening and set after midnight. The best aurora viewing times will be in the wee hours after the Moon sets.

Happy Hunting!

Potential For G2/G3 Aurora July 16 and 17

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Northern Lights Now – A large, long duration M2.44 Solar flare launched an Earth-directed CME from the surface of the Sun early on July 14 that may make for a period of active aurora on July 16 and 17. The NOAA Space Weather Prediction Center (SWPC) has issued a G2 storm watch for both days indicating that the aurora activity readings could be as high as KP=5.67. There is a chance that this storm could reach G3 storm levels.

NLN will be activating an Aurora live blog over the next several days, so come back often for updates. For starters, here is a quick animation of the flare that generated the CME that will impact Earth.

Happy Hunting

Finally – East coast may see colorful clouds from NASA Wallops Sounding Rocket Test On Fathers Day

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Northern Lights Now – After several scrubs, NASA looks set to successfully launch a Terrier Improved Malemute sounding rockets on Father’s Day, Sunday evening June 18, between 9:04 and 9:20 pm. The mission will deploy gasses into the ionosphere that hopefully will be visible as different colored high altitude clouds. Scientists are hoping to measure and track gas particle movements within these clouds. It is expected that the experiment will test some aurora imaging technologies, and the data may help use get a better understanding of Aurora. You may be able to see this launch if you live in the shaded areas in the map below!

Areas where it may be possible to see the Father's Day sounding rocket launch
Areas where it may be possible to see the Father’s Day sounding rocket launch

NASA scientists need it to be clear at either the launch site or nearby Duck, North Carolina to study the induced clouds. Several recent scrubs have been the result of skies that were too cloudy or hazy to be able to see the experiment. Another scrub was the result of boats in the “danger zone,” the area where the sounding rocket is expected to land in the ocean at the end of it’s task.

So far, it’s looking like the weather could be touch and go. The forecast calls for a chance of thunderstorms. An ill-timed thunderstorm arrival could make for yet another scrub. If the storms roll through at 6:00 and it clears out – there’s a good chance the launch will happen this time as long as boaters stay out of the danger zone.

What will I see During the the DC launch and test?

Viewers from New York City South to Greenville, North Carolina have a chance to see the rocket itself and the induced clouds. It is hard to know what the clouds will look like, but reports are that they may look similar to aurora or noctilucent clouds. However they look, it may be possible to see them with your bare eyes. The timing of the launch coincides with nautical twilight, so it will be after sunset, but there will still be a little light in the air.

To increase your odds of seeing this show, bring your digital camera and a tripod. Photographing these clouds will be similar to photographing aurora – and a great chance to practice! You don’t need a high end camera, but you will need to be able to manually set Aperture, ISO and exposure duration. Photograph the clouds with long exposures (1-5 seconds) and higher ISO (800-3200). Set your focus to infinity and consider a delay on the camera between hitting the trigger and when the image start so the camera can settle. If you get a great image, be sure to share it on NLN’s Twitter feed

What is a Sounding Rocket?

Sounding rockets are small instrument-carrying rockets designed to cost effectively reach altitudes between 50 and 1500 km. This is between the area that weather balloons can reach and where it is coast effective to send a satellite. They are frequently used in research because a mission can be designed and completed in months to years compared to the years it may take to get an experiment aboard a satellite mission. NASA has a terrific quick 5 minute video talking about sounding rockets and an experiment they were used for to study aurora

Images of several different sounding rockets
Images of several different sounding rockets

Happy Hunting!