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Expanding D0 in Central NC Utilizing 0-200cm RSoM
Fri, 31 Oct 2014 14:26:19
Expanding D0 in Central NC Utilizing 0-200cm RSoM in Conjunction with 30-90 Day Precip Deficits Introduction The North Carolina Drought Management and Advisory Council (NCDMAC) has a teleconference each Tuesday afternoon to discuss drought conditions and submit recommended changes to the U.S. Drought Monitor (http://drought.gov/drought). A variety of data are considered, such as streamflows, reservoir [...]
WRF Model using Cloud Computing Captures Central America "Tehuantepecer" Event
The Tehuantepecer is a strong mountain-gap wind traveling through Chivela Pass in eastern Mexico typically occurring in the late Autumn and Winter months. Tehuantepecers originate when post-coldfrontal northerly winds over the western Gulf of Mexico advance equatorward as a strong high pressure system moves into the U.S. Southern Plains. The gradient wind accelerates southward by cold air damming and blows through the gap in the Sierra Madre Mountains. Wind speeds can reach up to hurricane force in extreme scenarios in the Gulf of Tehuantepec. A Tehuantepecer event was accurately forecasted by the Weather Research and Forecasting (WRF) model runs over Central America in which peak winds exceeded 25 m/s.
Image of the Day
(click to enlarge)
Due to a convenient alignment between the A-Train orbital trajectory and the path of Hurricane Bill along the eastern coastline of North America, the CloudSat radar was able to take a look at the structure of the cyclone and passed very near to, or perhaps directly across, the eye of the storm (red line, top image). This overpass occurred at 18 UTC on 22 August 2009 when Hurricane Bill was classified as a Category 1 storm. It is unclear whether CloudSat directly sampled across the eye, but the relative lack of convection near 36 degrees may be associated with the eye. Assuming that CloudSat sampled the eye, it is interesting to note that it depicts a layer of relatively thick, high altitude cloud which may have obscured the location of the center in visible or infrared satellite imagery. CloudSat indicates that some shallower convection may be occurring near the eye center (bottom images).
Product Status Page
Though we're not 24/7, SPoRT strives to provide the most timely and reliable data products to its partners and end users. A system has been developed to monitor the availability of LDM and FTP products and categorize each product based on its age. Summaries are posted every 10 minutes to the link below.