Alan Crone's Weather Blog: Heat Index Near 100 Wednesday

Wednesday, June 10th 2015, 4:05 am
By: Alan Crone

We moved into the lower and mid-90s yesterday.  We'll hit near 96 to 97 today along with temperature heat index values near 100 near and east of the metro.   South to southwest winds from 5 to 12 mph will offer some relief at times under mostly sunny conditions.  These wind speeds will not be enough to disperse pollutants and our first Metro Ozone Alert of the early summer season is underway today.    We'll get one more toasty afternoon tomorrow before the pattern changes for the weekend bringing additional cloud cover and some showers and storms on occasion to part of northern and eastern OK.   The higher chances will reside across northwestern, west-central and north-central OK.   Pockets of moderate to heavy rainfall will be possible with any storms that develop later this week into the weekend.   A few severe storms will be possible in a few spots.

The upper air flow remains from the northwest to southeast today.   We didn't have any isolated or pop-up storms yesterday across the region and probably won't again today, but will mention the low probability anyway in this pattern.    The upper air flow will transition to the southwest soon.   This will allow a disturbance to move near the southern and central plains Thursday and another one nearing for the weekend.   The first wave will basically bypass the region with any showers or storms remaining away from our region Thursday.   Friday a surface boundary currently to our north will slide southward and may enter part of northern OK before stalling early Saturday morning.   This will represent our first chance for showers and storms but our probability will remain only near 10% Friday before increasing to near 30% late Friday night into pre-dawn Saturday morning. 

This first batch of storms will initially be heavy across northwestern and west-central OK.   A tropical-like environment will create efficient rainfall producing storms

A few severe storms may also develop Friday night to our west and move eastward into the area by early Saturday morning.   These would weaken with time as they move eastward into our region but still would be something to remain aware of for this period. 

Saturday morning the boundary will lift back northward as another disturbance approaches the southern and central plains.   Clouds will remain over most of the area Saturday into Sunday which should limit daytime highs to the mid and upper 80s.   South winds will remain in the 10 to 15 mph range with humid conditions.   A few showers or storms will be possible near the eastern third of the state this weekend but higher chances may reside to our northwest.  

Next week looks like a typical June week.   A weakly capped environment could produce late afternoon and early evening showers or storms with partly to mostly cloudy conditions.   Highs will remain in the mid to upper  80s. 

Thanks for reading the Wednesday morning weather discussion and blog.

Have a super great day!

Alan Crone