GRLevel2

GRLevel2 is a Windows viewer for live and archived NEXRAD Level II data. Base reflectivity, base velocity, storm relative velocity, and spectrum width sweeps for all radar tilts are available. High speed zooming and panning allows you to quickly focus in on the area of interest. 

Screenshots

Here are reflectivity and velocity screenshots from GRLevel2 of the May 9, 2003 tornado from the Oklahoma City radar (KTLX).

Downloads

GRLevel2 is free for 21 days after installing. When less than 5 days are left in the free trial period, an initial reminder screen is displayed. 

New users must download and install GRLevel2_setup.exe first. It has the base maps and sets up the registry properly. After installing it, you can download and copy over the latest build of GRLevel2.exe.

• GRLevel2_setup.exe
• GRLevel2_update.exe

Purchase

GRLevel2 is no longer available for purchase. For viewing Level II data I recommend GR2Analyst. For Level III data viewing I recommend GRLevel3.

Support

GRLevel2 uses your graphics hardware more than most applications. It accesses the hardware through DirectX 9. The latest version of DirectX is available at Microsoft's website:

• Microsoft DirectX

It's also recommended that you download and install the latest drivers for your video card. 

Common problems running GRLevel2 are:

• "d3d9.dll not found"  -- you need to install DirectX9
• "Unable to create DirectX9 device" -- usually due to having a 24 bit desktop, switch to a 16 or 32 bit desktop

Go to the GRLevel2 trial support forums for help using the trial version.

Minimum System Requirements

• Pentium processor or equivalent
• Microsoft Windows XP or higher
• 64 MB of RAM
• 16 or 32 bit color display at 800 x 600 resolution
• DirectX 9.0c