BREAKING: Pic via KPNX-TV chopper: #dust storm underway in Phoenix #Walda #AZwx

Pic via KPNX-TV chopper: high winds topple big rig in Phoenix #AZwx #Walda

It's EXTREMELY windy & dusty. Phoenix air so dirty and difficult to breathe right now. Beefing up our #azwx cvg

A HUGE thank u from all of us @12News for sending great images from our latest winter storm. You rock! #azwx

At home with 12News on and just saw Jimmy show this pic. How extremely cool is this! Very creatively done #azwx

Thar she blows, #Tucson! #AZ #AZWx #snow #SunValley

This #azwx so cool. A shot just sent in from Eastern AZ, Sunrise Ski Resort in the White Mtns - #picturesque

Pretty day in Tempe, #Arizona #azwx

And, here we have the idiot who either can't read, or doesn't really care. #azwx #StupidDriverTricks

Here's the actual roadway. #azwx

As we get closer, here's a more definite sign. #azwx

Simple sign, easy to read and understand, right? #azstorm #azwx

The first ever #StormCon is issued. Flagstaff, AZ is at a 6 (significant event; impacts for 1 day or less) #AZwx

Great iWitness pic via Mitch Rubin: a flight & full moon in Tempe, AZ #AZwx

Great weather to the west due to low over socal. #azwx #nvwx #cawx

Great weather to the west due to low over socal. #azwx #nvwx #cawx

Awaiting rain in #cenpho, near the @HeardMuseum. Grabbing the camera, looking northward. #azwx #phxwx

#azwx Phoenix temp right now is 10 degrees cooler than Denver, 1 degree warmer than Anaheim! Awesome! :) http://twitpic.com/atlyxp

200yd visibility, and people driving like it was sunny and clear outside. #azwx #azmonsoon

#Haboob approaching. This is State Route 347, just south of Riggs Rd. Earlier tonight. #azwx

Active #NVwx #AZwx day! #Monsoon2012

It's still in the 70s... let us all enjoy this while we can. #azwx #abc15am

Earthquakes in SoCal & brutal heat for the inland valleys/deserts. Hangin' in there? #CAwx #AZwx

Dust moving into Gilbert, AZ (near PHX) as seen from a news chopper. Former co-worker Michael Robison shot this! #AZwx

Definition of #haboob - Freaking huge wall of dust, run for your life! Women and children first! #azwx