— From your KSAN Storm Team Meteorologist Scott Barry — Big changes are coming in the late overnight hours, Saturday night, towards morning, with the arrival of a cold front that is due in to our San Angelo area about 4 AM Sunday morning.  Do expect a band of showers & a few thunderstorms to accompany the cold front, mainly between the hours of 2 AM to 8 AM, late overnight tonight & early tomorrow morning.  Updated forecast guidance now shows another band of rain will develop after sunrise and move in to our viewing area through late morning and a portion of the early afternoon, before diminishing, with a few peeks of sun late in the day, after the mostly cloudy skies & cool temperatures in the morning.  These showers will be arriving from the North, heading South, as we get in to the pre-dawn hours of Sunday morning.  After the frontal passage on Sunday morning, I still do see a chance of lingering showers during the day on Sunday, as it doesn’t appear that the front comes through cleanly, as cloudiness and some patchy light rain or drizzle will dot the area.  For that reason we have to carry a chance for showers in the forecast for your Sunday.  While the chances for rain are high early Sunday morning, rainfall amounts forecasted should be below 1/4″ for most of the area.  

A wind advisory is in effect from 1 AM to 7 AM Sunday morning for our Northern 1/2 of counties, for winds of 25-35 mph.

Temperatures will fall to the upper 50’s early Sunday morning with strong North winds of 15-25 mph & gusty on Sunday.  Perhaps some late-day partial clearing will allow some peeks of sunshine to allow for a late-day high temperature of around 70.  Our calendar high temperature for Sunday, though, will be reached tonight just after midnight before the front passes in the low to mid 70s.  By Sunday night & Monday morning, we should finally reach in to the low-to-mid 40’s for our low temperatures as skies clear out, with a Northerly breeze of 5-15 mph.  Monday & Tuesday feature mostly sunny skies with cold mornings in the 40’s & mild afternoon highs in the mid 70s to low 80s.   From Tuesday onward, we’ll get in a return Southeast to South wind flow & a moderating trend, with not as cold nights & warmer days later in the week. 

Our cold front will be passing through the Texas panhandle early tonight, thrusted Southward towards San Angelo, by a large high pressure area extending from Idaho in to NW Wyoming & Northern Colorado, during the overnight hours tonight.  From Sunday night to Monday, high pressure will sink Southeastward and settle-in to Oklahoma & NW Texas by that time providing lighter North winds of 5-10 mph across our region.  Finally, by Tuesday, this high pressure area will lift Eastward in to the mid-Mississippi Valley & Central Appalachians placing us on the West side of the surface ridge, and allowing for a return Southeast to South wind flow starting on Tuesday.  This means a warming trend will begin from Tuesday afternoon, onward.

— KSAN Storm Team

Meteorologist Scott Barry