[EAS] 9-1-1 Outages From Derecho/Windstorm

[Mike McCarthy]

When I saw that comment from Adrianne, I paused.  Never heard of a 
Deracho out west. West of the divide within the inter-mountain ranges, 
one might get some downburst enhanced gust fronts running down some 
mountain range in front of a line. But that's not a Deracho.  Deracho's 
are not able to really take off in the mountain areas due low elevation 
turbulence and general lack of convergence.

The only reason inter-mountain Virgina/West Virgina got battered was the 
energy gathered from running 500+ miles across Illinois, Indiana, and 
Ohio flat lands was eventually expended while passing across the mountains.

Also, a macroburst in this context is really a downburst. Even if one 
knew of a coming micro-burst,  there isn't much that can done inside a 
building other than getting under a sturdy table or bench. The 100+ MPH 
downward winds coupled with the inertial force of the wind accelerated 
rain is like a big sledge hammer on a structure. Well built steel 
structures have buckled under those conditions and many garages and 
homes have pancaked.

MM

On 1/18/2013 7:14 PM, Tim Stoffel wrote:
> Mike McCarthy writes
>
> The meteorological community has more widely publicized so many new phenomena as part of severe weather
> that some sort of educational campaign similar to that of tornado is needed just to get the word out there is more>  to a SVR than the most commonly known items (high wind and hail).
> We get Derechos in Nevada??
>