Transition Day on Monday!

Big changes are on the way to Central Texas! The powerful upper level low pressure system is currently located in California and will be pushing into northern Mexico by tomorrow.

Today was absolutely beautiful; under a perfectly clear sky temperatures climbed into the upper 50s to lower 60s across the area. Tonight, under a clear sky, temperatures will plummet into the middle 20s to lower 30s area wide. Clouds will increase from west to east across the area on Monday ahead of the upper level storm system; southerly winds will return allowing for Gulf moisture to begin its intrusion back into central Texas. Highs on Monday will climb into the upper 50s to lower 60s Monday afternoon.

Here's a look at predicted cloud cover across the western half of the United States for noon on Monday:

As the upper level storm system nears the area from the west, showers will pick up late Monday into the early morning hours of Tuesday. Rain is a good bet during the day on Tuesday, with scattered pockets of heavy rainfall with lightning possible. 

Forecast radar at 6 a.m. Tuesday morning:

Forecast radar at noon Tuesday:

Forecast radar for 12 a.m. Wednesday (midnight): Check out that shield of heavy showers and storms across West Texas...that will march east through central Texas early Wednesday and persist for much of the day. Severe weather is beginning to look more and more likely for south Texas and southern portions of central Texas for Tuesday and Wednesday. Storms will be capable of producing very heavy rainfall, gusty winds, small to medium sized hail and isolated tornadoes. 

The Storm Prediction Center has placed south Texas and south central Texas under the SLIGHT RISK category for severe weather on Tuesday.

Forecast rainfall totals across central Texas from the National Weather Service Austin/San Antonio Forecast Office:

High Resolution GFS Model is continuing to forecast a widespread 1-4 inch rainfall total. Heaviest rainfall looks to fall along and east of the Interstate 35 corridor.

ARCTIC AIR UPDATE: Continuing to look like a significant arctic outbreak is possible for a good chunk of the United States, including Texas, for the week of the 14th...cold weather fans, keep your fingers crossed. Highs may fall into the 30s and 40s for several days with lows in the 10s and 20s.