Severe Weather 19 June 2007 – Tennis ball sized hail in Fulton County

 

On 19 June 2007, severe thunderstorms developed in the Mohawk Valley and southern Adirondacks.  There was one discrete thunderstorm that became severe and tracked through Fulton County, producing tennis ball-sized hail, which is extremely rare for this region.  The storm was a classic long-lived “right mover” that produced large hail over a long duration.  A resident near Johnstown took astonishing video footage of the storm, with large hail falling for ten minutes.  The following are GR2analyst displays of Base Reflectivity (Fig. 1), vertical reflectivity of 50 dBZ (Fig. 2), vertical reflectivity of 60 dBZ (Fig. 3) and Reflectivity Cross Sections (Fig. 4).  The GR2analyst displays in figures 1-4 depict 50 dBZ and 60+ dBZ reaching unusual heights, supporting the formation of unusually large hail.

 

Some of the large hail is shown in the picture in figure 5, and the severe weather reports for this day are shown in figure 6.

 

 

Figure 1. Base Reflectivity display from GR2analyst from KENX at the 0.5° elevation angle.  Click on image for a movie of the evolution of Base Reflectivity from 1945 UTC through 2132 UTC 19 June.

 

 

Figure 2.  Vertical Reflectivity of 50 dBZ as displayed in GR2analyst.  Click on image for a movie showing the evolution of 50 dBZ vertical reflectivity from 2002 UTC to 2111 UTC 19 June.

 

 

Figure 3.  Vertical Reflectivity of 60 dBZ as displayed in GR2analyst.  Click on image for a movie showing the evolution of 60 dBZ vertical reflectivity from 2049 UTC to 2102 UTC 19 June.

 

 

 

Figure 4.  Reflectivity Cross Section as displayed in GR2analyst.  Click on image for a movie of the evolution of the Reflectivity Cross Section from 1958 UTC to 2111 UTC 19 June.

 

 

 

 

Figure 5.  Picture of large hail that fell in severe storms on 19 June.

 

Map of 070619_rpts's severe weather reports

 

 

Figure 6.  List of severe weather reports on 19 June 2007.