After a very rough night for some locations, we’ll see improving weather on Sunday including lower humidity and temperatures due to a weak front moving across part of the area.
This will bring northeast winds and drier air to northeastern OK. Unfortunately, far southeastern sections of the state will continue with higher moisture and heat advisories along the Red River Valley region where index values will climb from 105 to 112.
Temperatures Sunday morning will start in the lower 70s in the metro and reach highs nearing 94 with decreasing clouds and sunshine by midday to afternoon. Northeast winds from 10 to 15 mph will bring lower humidity. This will keep heat index values across northeastern OK between 95 and 100. While the pattern is changing, we’re still not finished with storm chances.
The mid-level ridge of high pressure that we’ve been tracking for several days remains anchored to our southwest. The very active northwest upper airflow has been positioned directly across northeastern OK for the past few days. As the ridge expands, this northwest flow will move east away from the state. But data from Saturday and confirmed by additional model runs this morning will keep the ridge mostly southwest of the immediate area for the next few days while the eastern extent indeed expands. This will create a small zonal or even southwest flow on the top of the ridge through Wednesday. This pattern will bring at least two small disturbances near the state early this week. The first arrives Sunday night into Monday morning with a few scattered showers and storms moving from the west to east across northern OK. I will include the chance for the metro. No severe weather is expected, and the probability of precipitation will remain around 20 to 30%.
The 2nd wave is stronger but will pass north of the state Wednesday. But since the center of the ridge will be south of the region during this period, a weak front may slide from southern Kansas into northern OK during the day Wednesday before stalling and lifting northward Thursday. This will provide a chance for a few showers and storms, mostly from Tuesday evening through Thursday morning, but our chances will remain for only the Tuesday evening and Wednesday morning period for now. Later in the week, most of the data will expand the ridge northward and bring extremely hot weather from Texas into the state again.
Thanks for reading the Sunday morning weather discussion and blog.
Have a super great day!