Excessive heat and humidity will continue today and for part of the area tomorrow before a strong cold front arrives Friday afternoon and evening. This front will signal a pattern change that should remain for several days next week. Afternoon temperatures today will be near 100 along with heat indices near 110 degrees. One or two isolated storms will continue to be a possibility, but most locations will miss out on the storm activity. Excessive heat warnings and heat advisories will be required today for all of eastern OK.
A mid-level trough is beginning to develop across the Pacific Northwest and will move eastward over the next 24 to 36 hours. A surface cold front developing now across the northern and central plains will move southeast by Thursday night and Friday. This front will enter Northwestern Oklahoma Friday morning and possibly into our immediate area sometime Friday night. The potential for showers and storms will be increasing during this time. Some showers and storms will be a possibility Friday morning across northwestern OK and into the afternoon across far northern Oklahoma, but the higher chances will remain Friday night into early Saturday morning across part of northern Oklahoma.
Saturday the cold front will be located to the south of the Tulsa area but some showers and storms will remain near our area for the first part of Saturday. By midday to early afternoon most showers and storms will begin pushing into southern Oklahoma. The potential for clouds and rain cooled air should allow Saturday's temperatures to stay in the mid-80s along with northeast winds at 10 to 15 miles per hour. Sunday's temperatures will start in the mid-to-upper 60s and will be followed by highs in the mid-80s along with Northeast winds and mostly to partly cloudy conditions. A few showers may continue Sunday along the Red River Valley. Some data also support a continued chance across northeastern OK Sunday morning. The jury is still out on this solution, but we’ll keep a mention in the forecast for Sunday until better confidence arrives regarding the potential outcomes and scenarios.
Monday through early next week temperatures should remain not as hot compared to the previous week with lows in the upper 60s and lower 70s and daytime highs in the upper 80s and a few lower 90s. Some data also include a chance for showers and storms by the middle of the week while other data will bring another significant front into the area late next week. Regardless it does appear in the pattern has changed and will allow for not as hot air next week.
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