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Category: Aviation

Re-suspended ash from the Katmai volcano in Alaska

GOES-15 0.63 µm visible channel images (above; click image to play animation) showed a distinct hazy plume streaming southeastward from the Katmai volcano area in Alaska on 22 September 2013. This was a signature of re-suspended volcanic ash — a deep layer of ash has remained on the ground near... Read More

Bore Feature over Wisconsin

Satellite and especially radar revealed the tell-tale signs of an undular bore over southern Wisconsin on the morning of 26 August. The parallel lines of enhanced radar return, above, suggest that the outflow from the convective complex over northern Wisconsin organized into a bore, in part because the atmosphere over... Read More

Fog and stratus deck over the North Slope region of Alaska

The Area Forecast Discussion issued by the National Weather Service forecast office in Fairbanks mentioned the presence of a layer of fog and stratus over parts of the North Slope region of Alaska:NORTHERN ALASKA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FAIRBANKS AK 1258 PM AKDT MON MAR 11 2013 NORTH SLOPE…THE... Read More