Things haven't changed too much from yesterday morning's forecast discussion: the mid-level ridge of high pressure will be the dominate feature most of the week. We continue to see signs of a possible mid-level system that could approach the area Friday into the weekend. Temperatures will continue to climb a few degrees through the end of the week with temperature heat index values nearing or slightly above 100 to 104. A few locations may approach heat advisory criteria in a few locations.
Moisture in the lower portion of the atmosphere will remain through the next 7 day period with south winds around 10 mph. Low temperatures will remain in the lower to mid-70s and highs in the mid to upper 90s through Thursday before coming down a few degrees Friday into the weekend.
The mid-level ridge is expected to slide southwest Friday into the weekend. EURO and GFS data support an easterly type wave moving southwest across the southwestern Texas region, up through the four corners area, and then nearing southern Kansas or possibly Oklahoma by Friday into the weekend. This would result in additional clouds and possibly scattered thunderstorms during this time period. We have not included any probabilities at this time for the end of the 7 day planner due to some in consistencies in the exact placement of the mid-level feature.
We think the main upper level pattern will undergo a change by the end of the first full week in September. The normal high September 1st is 90 but by the end of the month, our daily average high is 78. September is usually a big transition month and we should be seeing some of these changes by the middle of the month.
The official high in Tulsa yesterday was 93 recorded at 3:09pm. The normal high is 91 and the low is 70. Daily records include a high of 105 from 2000 and 1913. The record low is 50 from 1910.
Precip for the year is now at 23.38 inches which is -3.56 inches off the normal to date of 26.94 inches.
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