The scale for measuring these geomagnetic storms is called "the G scale," ranging from a minor storm at G1 to an extreme storm at G5. "As this particular coronal hole rotated back into view – meaning we could see and analyze it – it was clear that it had diminished and we adjusted our forecast accordingly," Brasher told CBS News via email. EST.īryan Brasher, a project manager at NOAA's Space Weather Prediction Center told CBS News one coronal hole in particular had previously shown elevated activity, so forecasters expected it to do so again. NOAA has an interactive map that shows where above Earth the northern lights are positioned. Solar wind from coronal holes in the sun flow towards Earth and have a magnetic reaction that causes the northern lights, also called the aurora borealis, according to NASA. NOAA also initially predicted high activity for this week and then downgraded their forecast. This means that the high levels of activity previously expected are now considered much less likely." "However, now that the forecast activity is less than three days in the future, we can see that the solar features that produced the prior activity have actually diminished over the last month. "The features on the sun that produce activity like this typically last 1-3 months, so the active conditions were predicted to occur again this week," a representative for the institute told CBS News via email. University of Alaska's Geophysical Institute A map from University of Alaska's Geophysical Institute shows were above the Earth the northern lights will be on July 13. The institute told CBS News it originally predicted a moderate solar storm – which causes the dazzling phenomenon. Tightly woven, loose-fitting clothes provide additional protection from the Sun.Last week, the institute projected the display would be visible in 17 states over those two days: Washington, Iowa, Illinois, Ohio and Massachusetts on July 12, and Alaska, Montana, Minnesota, Wisconsin, Michigan, Oregon, Idaho, Wyoming, Nebraska, Indiana, Vermont and Maryland on July 13. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Take precautions - Protection against sunburn is recommended.
Note: In June, the average maximum UV index of 5 translate into the following recommendations: A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person. UV indexThe months with the highest UV index in Bar Harbor, Maine, are June through August, with an average maximum UV index of 5.
SunshineThe average sunshine in June is 8.6h. On the last day of the month, sunrise is at 4:51 am and sunset at 8:21 pm EDT. On the first day of June, sunrise is at 4:51 am and sunset at 8:09 pm. Daylight The month with the longest days in Bar Harbor, Maine, is June, with an average of 15h and 30min of daylight. Even a short swim, without thermal protection, at temperatures around 55.4☏ (13☌) is not comfortable. Note: At temperatures below 50☏ (10☌), swimming in a suitably protected swimsuit is feasible otherwise, cold shock and loss of breathing control are imminent. Ocean temperatureIn Bar Harbor, the average water temperature is 49.5☏ (9.7☌). SnowfallJune through September are months without snowfall. In Bar Harbor, during the entire year, the rain falls for 142.1 days and collects up to 32.28" (820mm) of precipitation. Throughout June, 2.6" (66mm) of precipitation is accumulated. Rainfall In June, in Bar Harbor, the rain falls for 13.8 days. HumidityIn June, the average relative humidity is 79%. In Bar Harbor, the average low-temperature is 51.4☏ (10.8☌). TemperatureIn Bar Harbor, Maine, the average high-temperature in June marginally rises from a moderate 58.6☏ (14.8☌) in May to a comfortable 66☏ (18.9☌). The first month of the summer, June, is a comfortable month in Bar Harbor, Maine, with temperature in the range of an average low of 51.4☏ (10.8☌) and an average high of 66☏ (18.9☌).
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