Getting tropical

Sunday, August 25, 2013 at 12:15 pm

Tuesday AM update:

Most of the rainfall over the past 48 hours has stayed to our south.  Southern Utah, as expected, has seen a good amount of precip.  Most moisture from Ivo has fallen apart but we are left with a very moist atmosphere in its wake.  Hence, expect a good amount of rain showers this afternoon, especially in southern Utah.  Flash flood watches are posted.

Sunday AM:

Tropical Depression Ivo (formerly Tropical Storm) is currently spinning off the Baja California coast.  It’s counterclockwise rotation is sending abundant moisture up into Arizona and Southern/Eastern Utah.  Here is a recent satellite/infrared image showing the moisture streaming up to the Northeast of Ivo:



Expect rainfall to become widespread this afternoon with embedded thunderstorms in Southern Utah.  This rain will continue through Tuesday with a large area of more than 2 inches of rain possible.  Flooding is a concern, especially near burns scars.  Up north, in the SLC area, our rain will be more scattered in nature.  Clear skies this morning have allowed surface heating to take place which should help destabilize the atmosphere this afternoon.  Don’t be surprised to see another round of thunderstorms the afternoon/evening along the Wasatch Front.

This moisture will stick around through Tuesday before we start to dry out.  We will still have a slight chance for thunderstorms every afternoon, especially in the mountains, through the end of the week.  We are approaching Fall, and sure enough we are seeing the jet stream start to sag farther and farther south.  It looks like late next weekend/early next week we may see our first cold front of the season.  It will likely only graze Northern Utah, but could serve to fire up a few thunderstorms and leave us a little cooler in its wake (70s in the valley?) .  Relative to what we have seen, it almost sounds like winter!  This is still a long ways out, so it will need watching, but relief from the heat could be in the cards.

In the meantime, enjoy the clouds and rain showers over the next few days.


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