6/5/2020 Forecast Update
FORECAST SUMMARY:
Friday, June 5th, 2020 through Monday, June 8th, 2020
OZONE: 8-Hour average Ozone concentrations Friday will be mostly Moderate; levels will be mostly Good Saturday and Sunday with just a few Moderates possible; mostly Moderate levels return Monday with a chance for isolated USG.
PM-2.5: 24-hour average Fine Particulate concentrations will range from upper Good to low Moderate.
FORECAST DISCUSSION:
A frontal boundary will produce scattered precipitation Friday as it moves through the region. Warmer temperatures and southwesterly winds ahead of the front may allow for some Moderate ozone and fine particulate. For the weekend, high pressure builds in creating dry conditions and comfortable temperature and humidity levels.
As for air quality Saturday and Sunday, plenty of sunshine both days can be expected. Cooler temperatures at the surface and upper levels, coupled with northeasterly winds turning southeasterly, should hamper significant increases in pollution. However, it does not take much to reach low Moderate for ozone this time of year, so we expect readings to range from upper Good to low Moderate. Fine particulate will be mostly Good with scattered low Moderates possible Sunday, generally in the southeast.
By Monday, high pressure is near the east coast and we return to warmer temperatures and southerly winds both at the surface and upper levels. We should be coming off a low background of ozone so at this time we feel ozone will not reach higher than Moderate. If our feelings on that change, we will update this forecast Sunday to detail expected increases in ozone. Fine particulate Monday will range from upper Good to middle Moderate.
EXTENDED FORECAST:
Extended forecast models show increased temperatures continuing Tuesday and humidity levels will be on an increase as well. The big weather story will be the current tropical depression Cristobal moving into the Gulf of Mexico this weekend. Forecast models are showing its remnants moving north and into our region by Tuesday/Wednesday of next week.