Below Normal Temperatures and Lake Effect Snow in the Eastern U.S.

Well below normal temperatures will continue across much of the eastern U.S. into Monday. Wind Chill Advisories have been issued from the Ohio Valley down to the northern Gulf Coast and southeast U.S. Heavy lake effect snow continues through tonight east of Lakes Erie and Ontario. Lake Effect Snow Warnings remain in effect. Read More >

Heavy Snow Event

March 6, 2008

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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Below Normal Temperatures and Lake Effect Snow in the Eastern U.S.

March 6, 2008 Snow