Tropical Depression in the Gulf; Severe Thunderstorms Monday

Tropical Depression Two is expected to gradually strengthen and could bring tropical storm conditions to the Florida Panhandle beginning late Monday. Areas of flash flooding will be possible through Thursday along the eastern and central Gulf Coast. Severe thunderstorms will develop and move along a cold front crossing the Upper Midwest Monday, and through the Ohio Valley/Mid-Atlantic on Tuesday. Read More >

Above is a photograph taken in southwest Lubbock that shows the circumscribed halo with a colorful upper tangent arc and a portion of the white colored perhelic circle stretching horizontally from the sun across the western sky.

Rare Solar Halo in West Texas Sky

Tuesday afternoon, 6 November 2007, an unusual solar halo was observed in the skies above Lubbock.

Haloes are bright, often colorful arcs, spots, or rings seen in high cirrus clouds composed of ice. Haloes are formed by reflection and refraction of solar or lunar light through ice crystals, and occur frequently worldwide. Although haloes visible around the sun and the moon are a common occurrence, under certain conditions, halo displays can become particularly complex.

As high clouds streamed above the South Plains of west Texas Tuesday afternoon, a rather elaborate halo display was visible from Lubbock (and likely other South Plains communities) around 1:00 PM. In addition to the common circular 22 degree halo around the sun, a rarely seen bright ring was visible encircling the entire sky at the solar elevation. Known as a perhelic circle, this horizontal bright band of white light around the sky appears to encircle an observer, but is rarely seen due to the typical variability of clouds and their ice crystals throughout the entire sky.

Tuesday’s halo also was “circumscribed” above by a very colorful upper tangent arc. For more information on atmospheric optics CLICK HERE.

LUB RSS Feed

Tropical Depression in the Gulf; Severe Thunderstorms Monday

NWS Lubbock News Item Solar Halo