High pressure from the west coast to the southeast will bring above normal temperatures to the area. A developing storm will bring heavy snow, blizzard conditions and bitterly cold temperatures to Alaska this weekend. Heavy rain and flooding expected in the lower elevations of Hawaii and blizzard conditions are expected in the Big Island Summits this weekend. Read More >
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Heavy Snow Event March 6, 2008 |
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On 6 March 2008, a convective precipitation band formed across North Texas and quickly transitioned from rain to snow in a 60 km wide zone extending from west of the Dallas / Fort Worth metroplex northeast into extreme North Texas near the Red River. The snow persisted for over three hours with accumulations averaging 7 cm and isolated reports up to 30 cm near the heaviest convective precipitation. Frontogenesis and the resulting ageostrophic circulation appeared to play key roles in not only providing significant forcing for ascent but also in modifying the vertical temperature profile to be supportive of a liquid-to-frozen precipitation transition. The presence of atmospheric instability led to isolated thunderstorm development, with occasional cloud-to-ground and in-cloud lightning observed in the band of heavy snow. This study reviews the complex interactions between moisture, instability, and forcing for ascent that occurred during this convective winter weather event.
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