LMA (Sterling/Mt. Holly CWAs):

All 4 folks viewed event over Eastern US in Sterling’s LMA area. This was a good first case to illustrate some of the characteristics of the data sets. Some in the group were surprised at the value of the data set, thought to be especially beneficial for areas with no radar coverage. Vilma was especially useful, Some questions that came up were in regard to the meaning of LTGiC  vs LTGCG which initiate at the same or different times in the storms life.  Looking forward to getting more exposure to data sets.

MR/MS IOP over N. CA and S. OR (MFR CWA):

No areas of rotation so rotation tracks not very useful in this event.  However, MESH was very useful, especially since it appeared to be accurate.  They paid attention to trends in MESH and how they correlated to the reports they received.  Reflectivity at the -20 level and the height of the 50 dBZ was not impressive, nor was VIL, and these agreed with MESH but it was useful that MESH actually provided an accurate hail size.  VIL 45 was roughtly their warning threshold.

Pete mentioned that -20 C was useful to identify where the most likely location of the hail cores were located.  He wished there was more information provided by gridded products for the theat of winds.  He noticed a weak, though well defined MARC signature in the SRM data via All Tilts from KMAX shortly after issuing the first SVR.  He tries to really examine the NSE (near storm environment) closely to aid in the warning decision process for severe straight line winds.

Veronica:  Echoed statements from others and added that 50 dBZ and 30 dBZ contours and the reflectivity at -20 C were useful in the evaluation of hail threat for this marginal event.

Liz Quoetone and Paul Schlatter (EWP Weekly Coordinators, 1-5 June 2009)