Category Archives: Winter Weather

The Utility of Non-NWS Upper Air Observations – NC State Soundings Support Severe Weather Operations at NWS Raleigh on May 4th and 5th, 2017

There are several non-NWS organizations that take upper-air observations and share them with NWS forecasters. These organizations largely consist of universities, military installations or research laboratories. The motivation for taking these observations include research efforts as well as educational and … Continue reading

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Recent Experiences with NASA SPoRT Soil Temperature Products

NWS Raleigh along with WFOs Houston and Huntsville have been participating in an assessment of several NASA SPoRT Land Information System (LIS) soil moisture products during the past year. During the winter, the same WFOs have been receiving two LIS … Continue reading

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Nice Time Lagged Ensemble Example During Cold Advection

We have found single model time lagged ensembles to be helpful in forecast activities at NWS Raleigh to ascertain model trends, gauge model consistency or volatility and to consider in determining forecast confidence. We access this data through Bufkit via … Continue reading

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Dual-Pol Radar Data Used to Identify Birds During a Freezing Rain Event on January 9, 2015

On Friday, January 9th 2015, areas of freezing rain fell across the southern and central Coastal Plain of North Carolina during the pre-dawn hours. The precipitation was driven by convergent low-level flow in a region of isentropic up-glide that resulted … Continue reading

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Recent Paper on the CAD Event Associated With the January 2011 Southeast U.S. Ice Storm

Now that winter has arrived, at least unofficially, we wanted to pass along a recent paper by WFO Charleston, SC Lead Forecaster Steven Rowley regarding the cold air damming (CAD) associated with a significant ice storm that affected the Southeast … Continue reading

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1″/hr Snowfall Rates and Transition to Sleet as Observed by Time Lapse Photography and WSR-88D Data

Now that the much-awaited winter storm is unfolding across the region I thought I’d share a time lapse of today’s snow accumulation ending with a sudden changeover to sleet in Cary, NC (central Wake county).  The attached animated GIF contains 17 … Continue reading

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An Examination of Lake Enhanced Snow across Central NC on 22 January 2014

by Michael Strickler A band of moderate snow developed over the far northeast Piedmont and northern and central Coastal Plain of central NC on the morning of 1/22/2014. The intensity of the snow band increased such that the visibility at … Continue reading

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