Random Chaos
(Weather Analyst)
Mon Jun 24 2013 08:03 PM
Storm Cleanup - EF0 near Washington, DC on June 13th

On June 13th an EF0 hit my parent's in Rockville, MD (no structural damage, but two huge trees down). This was an fascinating storm on radar.

Some facts about it:
1. Very long track for an EF0 tornado at 18 miles
2. 3rd longest track of any storm in recorded Maryland history
3. Hook echo was hooking to the north rather than the normal south (see radar images below) - very unusual

Damage photos of the area where it hit in Rockville:
http://www.firstones.com/aardvarks/west_end_storm_damage.jpg

NWS Sterling Nexrad Level II Reflectivity 0.9 degree sweep showing hook echo (circled)
Full size: http://www.firstones.com/aardvarks/tor061313reflectivity.png


NWS Sterling Nexrad Level II Radial Velocity 0.9 degree sweep showing couplet; the red is 15mph near the direction of the storm, which was moving at approximately 60mph.
http://www.firstones.com/aardvarks/tor061313veolocity.png

This picture is 15 minutes earlier (same tilt), about 9 before the tornado touched down. The shape of the system was fascinating:

http://www.firstones.com/aardvarks/Screen%20Shot%202013-06-24%20at%207.52.45%20PM.png

Enjoy!



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