The Influence of the Rocky Mountains on the 13–14 April 1986 Severe Weather Outbreak. Part II: Evolution of a Prefrontal Bore and Its Role in Triggering a Squall Line
| Autor: | Michael L. Kaplan, Chaing Chen, V. Mohan Karyampudi, Steven E. Koch, James W. Rottman |
|---|---|
| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Monthly Weather Review. 123:1423-1446 |
| ISSN: | 1520-0493 0027-0644 |
| DOI: | 10.1175/1520-0493(1995)123<1423:tiotrm>2.0.co;2 |
| Popis: | In this paper, Part II of a series, the evolution of a prefrontal bore on the leeside of the Rockies and its subsequent propagation and initiation of convection farther downstream over eastern Colorado and western Nebraska are investigated. The observational evidence for this sequence of events was obtained from combined analyses of high-resolution GOES satellite imagery and Program for Regional Observing and Forecasting Services mesonetwork data over the Colorado region for the severe weather event that occurred during 13–14 April 1986. A 2D nonhydrostatic numerical model is used to further understand the initiation of the bore and its ability to propagate farther downstream and trigger convection. Analysis of satellite imagery and mesonet data indicated that an internal bore (ahead of a cold front), a moderate downslope windstorm, and a quasi-stationary hydraulic jump were generated within a few hours along the Iceslope as a Pacific cold front and its attendant upper-level jet streak advanced o... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|