Outflow From Thunderstorms Off The High Terrain Pose Dust Storm Risk In Phoenix Metro This Evening; Weather Advisory Issued

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As per the article way back on July 5th, the window between July 8th and the 15th would supply the metros with a lot of activity coming from the high terrain, or your north and east, and a dust storm is possible with this first round this evening so read on for details …

The flow is not strong, but not weak either.  It is a moderate mid/upper level flow out of the northeast that will develop storms along the Mogollon Rim.  These will shove through Payson and Globe.  As they do so, outflow from them will split, one going for New River to Black Canyon City and the other for Gold Canyon and Queen Valley.  Both of these will have the risk of thunderstorms with them as well, forming with the dust storm.  Those are the main two key areas.  The wind gust model provided in this article shows where the worst areas should be within Gila, Maricopa, Yavapai, and Pinal County for this evening’s outflow event.

NOTE:  Travelling along I-17 north of Phoenix near and north of Black Canyon City is not recommended if you’re in a high profile vehicle.  That area, with the cross outflow wind, will tip you over.

As stated in the article on July 5th (CLICK HERE) there is a break in the activity for Tucson today, but starting up again tomorrow.  For the Phoenix metros, you are still scheduled for a major increase in storms toward the middle and end part of this 7-day period.

The Martin Wind Gust Intensity Model below has values as followed; The map below is clickable.

8. Extensive widespread damage.
7. Trees are broken or uprooted, building damage is considerable. – High Profile Vehicle Roll-Over CERTAIN.
6. SOME Trees are broken or uprooted, building damage is possible. – High Profile Vehicle Roll-Over Likely, Do NOT recommend Traveling in this zone
5. Slight damage occurs to buildings, shingles are blown off of roofs. HIGH WIND WARNING CRITERIA – High Profile Vehicle Roll-Over Possible if weight is not corrected.
4. Twigs and small branches are broken from trees, walking is difficult.
3. Large trees sway, becoming difficult to walk. – WIND ADVISORY CRITERIA


 

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