Chance Morning Storms, Then Back to Hot & Humid. - NewsOn6.com - Tulsa, OK - News, Weather, Video and Sports - KOTV.com |

Chance Morning Storms, Then Back to Hot & Humid.

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At least some of us picked up useful rainfall with those morning showers and storms. The map on the right courtesy of the OK Mesonet shows the radar estimated rainfall as well as some of the actual rain gauge reports. Pretty spotty but anything will help. We have another chance later tonight and into the morning hours of Wednesday due to a complex of storms now developing in Eastern Colorado and which is expected to move to the E SE overnight. Unfortunately, those will likely be rather spotty as well by the time they reach us. So, I am seriously considering keeping the windows rolled down on my pickup or maybe even washing and waxing it if that will encourage a good rain!

The rain today and what additional rainfall we receive Wednesday will also complicate the temperature forecast. And not just because of the extra cloud cover. An additional effect will be the extra moisture in the soil which the plants will be able to use. This has an overall cooling effect, what we refer to as evapo-transpiration. So, despite lots of afternoon sunshine on Wednesday, we expect our daytime highs to be in the mid-upper 90s; still much warmer than normal but at least below triple digits. Unfortunately, this additional moisture will also put the heat index up around the dangerous 105 mark during the heat of the day so extra caution is advised with the outdoor activities.

Morning lows will be back in the 70s to start the day on Wednesday, but after that we will be in the upper 70s to lower 80s again. So, not much relief at night and with daytime temperatures expected to be near triple digits each day through the weekend and into early next week, we have a prolonged stretch of hot, humid weather ahead of us. Heat index values will likely be near the dangerous 105 mark if not above it each day as well.

Another contributing factor to the heat will be the winds. Brisk southerly winds will return for Wednesday but there are indications that we will have more of a SW component on Thu and Fri. If that is indeed the case, then temperatures will soar even higher than is currently forecast. By the weekend and through the fourth of July, the pressure gradient should relax somewhat allowing for relatively lighter southerly winds. That would allow our nights to cool off a few more degrees and the lighter winds surface and aloft may also result in a few isolated late afternoon showers or storms, particularly in the higher terrain locations.

Bottom line though is that after Wednesday, we will have an extended period of hot, humid weather to deal with and any cooling showers or storms will be isolated at best.

So, stay cool, stay tuned, and check back for updates.

Dick Faurot

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