Cold temperatures will remain across the Northern Plains, while portions of the Central Rockies see an enhanced wildfire threat early this week. The remnants of Typhoon Hagibis will produce hurricane-force winds and 50-foot seas across the Bering Sea in Alaska. By Tuesday, heavy rainfall moving into the Southeast states may cause localized flash flooding. 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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