TITLE

Heavy Precipitation Associated with Southern Appalachian Cold-Air Damming and Carolina Coastal Frontogenesis in Advance of Weak Landfalling Tropical Storm Marco (1990)

AUTHOR(S)
Srock, Alan F.; Bosart, Lance F.
PUB. DATE
August 2009
SOURCE
Monthly Weather Review;Aug2009, Vol. 137 Issue 8, p2448
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An analysis is presented of Tropical Storm Marco (1990), a storm that dropped copious amounts of rain over the southeast United States. Marco was noteworthy because of its role in the formation and evolution of two distinct episodes of cold-air damming and coastal frontogenesis over Georgia and the Carolinas. These mesoscale features led to greater than 300 mm of precipitation in 2 days over the near-coastal southeast United States; much of the rain occurred while Marco was over 400 km away. This case is further complicated by two other nearby tropical cyclones, which affected Marco’s track and the overall rainfall distribution. Synoptic and mesoscale analyses of the development of the coastal front and cold-air damming episodes show that the location of Marco helped to orient low-level winds toward the Appalachians. As rain developed inland, a pocket of relatively cool air, the “cool pool,” formed near the mountain slopes and was partially blocked by the higher terrain. Low-level analyses show that the coastal front on the oceanward edge of the cool pool became a focusing mechanism for ascent and precipitation, as moist, tropical air advected inland by Marco was forced upward at the density gradient. The results indicate that a weak tropical cyclone can directly effectuate intense precipitation distant from the storm center, both by causing moist tropical flow toward land and by inducing mesoscale features that focus the precipitation and lead to heavy rainfall and flooding.
ACCESSION #
43991800

 

Related Articles

  • Precipitation Simulations Using WRF as a Nested Regional Climate Model. Bukovsky, Melissa S.; Karoly, David J. // Journal of Applied Meteorology & Climatology;Oct2009, Vol. 48 Issue 10, p2152 

    This note examines the sensitivity of simulated U.S. warm-season precipitation in the Weather Research and Forecasting model (WRF), used as a nested regional climate model, to variations in model setup. Numerous options have been tested and a few of the more interesting and unexpected...

  • Focus on Climate Impact Assessment and Forecast Service in Liaocheng City in 2015. Yaping LI; Xiaoya WANG; Xuelei HAN; Fanhua JI; Zhiyong YANG // Agricultural Science & Technology;Nov2016, Vol. 17 Issue 11, p2505 

    Detailed statistics of characteristics of climatic factors in Liaocheng in 2015 were carried out. The main points of meteorological service were summed up to improve the ability of meteorological forecast, thereby meeting the new requirements of the public for meteorological cause. The results...

  • How Do Forecasters Utilize Output from a Convection-Permitting Ensemble Forecast System? Case Study of a High-Impact Precipitation Event. Evans, Clark; Van Dyke, Donald F.; Lericos, Todd // Weather & Forecasting;Apr2014, Vol. 29 Issue 2, p466 

    The proliferation of ensemble forecast system output in recent years motivates this investigation into how operational forecasters utilize convection-permitting ensemble forecast system guidance in the forecast preparation process. A 16-member, convection-permitting ensemble forecast of the...

  • Extreme Precipitation and Temperature over the U.S. Pacific Northwest: A Comparison between Observations, Reanalysis Data, and Regional Models**. Dulièère, Valéérie; Yongxin Zhang; Salathéé, Eric P. // Journal of Climate;Apr2011, Vol. 24 Issue 7, p1950 

    Extreme precipitation and temperature indices in reanalysis data and regional climate models are compared to station observations. The regional models represent most indices of extreme temperature well. For extreme precipitation, finer grid spacing considerably improves the match to...

  • An Observational Study of Fronts and Frontal Mergers over the Continental United States. Neiman, Paul J.; Ralph, F. Martin; Shapiro, M.A.; Smull, B.F.; Johnson, D. // Monthly Weather Review;Oct98, Vol. 126 Issue 10, p2521 

    The Stormscale Operational and Research Meteorology-Fronts Experiment Systems Tests (STORM-FEST) field program was carried out over the central United States to investigate the structure and dynamics of fronts and their attendant precipitation systems adjacent to complex topography and to...

  • Nowcasting Storm Initiation and Growth Using GOES-8 and WSR-88D Data. Roberts, Rita D.; Rutledge, Steven // Weather & Forecasting;Aug2003, Vol. 18 Issue 4, p562 

    The evolution of cumulus clouds over a variety of radar-detected, boundary layer convergence features in eastern Colorado has been examined using Geostationary Operational Environmental Satellite (GOES) imagery and Weather Surveillance Radar-1988 Doppler (WSR-88D) data. While convective storms...

  • ASYMMETRIC RAINBAND BREAKING IN TYPHOON HAITANG (2005) BEFORE AND AFTER ITS LANDFALL. Ding Zhi-ying; Wang Yong; Shen Xin-yong; Xu Hai-ming // Journal of Tropical Meteorology;Sep2011, Vol. 17 Issue 3, p276 

    Using the WRF (Weather Research Forecast) model, this work performed analysis and simulation on the rainband change during the landfall of Typhoon Haitang (2005) and found that breaking may occur over land and oceans leads to distinct asymmetric precipitation. The breaking is related to the...

  • PROBCAST A Web-Based Portal to Mesoscale Probabilistic Forecasts. Mass, Clifford; Joslyn, Susan; Pyle, John; Tewson, Patrick; Gneiting, Tilmann; Raftery, Adrian; Baars, Jeff; Sloughter, J . M.; Jones, David; Fraley, Chris // Bulletin of the American Meteorological Society;Jul2009, Vol. 90 Issue 7, p1009 

    This paper describes the University of Washington Probability Forecast (PROBCAST), a Web-based portal to probabilistic weather predictions over the Pacific Northwest. PROBCAST products are derived from the output of a mesoscale ensemble system run at the University of Washington, with the fields...

  • Representativeness of four precipitation observational networks of China. Ren, Yuyu; Ren, Guoyu // Acta Meteorologica Sinica;Aug2012, Vol. 26 Issue 4, p454 

    Four precipitation observational networks with varied station densities are maintained in China. They are: the Global Climate Observation System (GCOS) Surface Network (GSN), the national Reference Climate Network (RCN), the national Basic Meteorological Network (BMN), and the national Ordinary...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics