31 May UTC meeting John Hubbert and Angela Rowe

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Presentation transcript:

31 May 2008 0645 UTC meeting John Hubbert and Angela Rowe S-Pol Summary 31 May 2008 0645 UTC meeting John Hubbert and Angela Rowe

S-Pol summary Filtering capabilities (no clutter filter)

Filtering Legacy clutter filter CMD processing

S-Pol summary Insects Z ZDR

S-Pol summary Initiation along slopes, followed by rapid dissipation over higher terrain (e.g., 23 May) Sea breeze initiation over coastal plain (e.g. 26 May)

S-Pol summary Initiation along boundaries to S over ocean (e.g., 28 May)

29 May 2008 Overlays of reflectivity (1.9º elevation angle) and topography from 0005, 0105, 0205, and 0250 UTC highlight echo along western slopes of terrain Rain at S-Pol at 0200 UTC.

29 May 2008 VIS (0530 UTC) Notable W-E oriented line of convection to the W of S-Pol extending perpendicular from the coast. This boundary was also evident on satellite images for the previous 5 hours. Radar reflectivity (0630 UTC)

1730 UTC Line of cells over western slopes produced outflow boundary 29 May 2008 overnight 1730 UTC Line of cells over western slopes produced outflow boundary

30 May 2008 Used SuperSite scanning strategy for majority of day (included RHIs over this region) to focus on cells moving toward the terrain Z ZDR

30 May 2008 Most activity limited to NE of radar along western slopes Continued development in this region for most of day, but most impressive cells >75 km away from S-Pol

2000-2300 UTC 30 May 2008 Precipitating features to south of S-Pol during early morning hours RHIs and polarimetric variables reveal intense cores

RHIs (2309 UTC) Higher Zdr indicating larger drops Melting level Graupel aloft, large melting drops below Phase shift

31 May 2008 0500 UTC Indication of large-scale organization of precipitation Cells over SuperSite Continued surveillance scanning How will system interact with terrain as day progresses?