Meteorologist Melissa Frey’s Forecast Discussion:
July 2013 will go down in the history books as bone dry. We didn’t get a single drop of rain in July. The last time this happened was in 2003. The time before that was 1967, then in 1933. This is still the driest start to a year that we have ever seen in Eugene. We’re now 15.73 inches below normal in rainfall for the year.
A trough of low pressure is continuing to move across the Pacific Northwest. This has brought in a cooler air mass from the Gulf of Alaska. We’re also seeing more on-shore flow which is bringing the marine layer all the way up to the base of the Cascades. East of the Cascades thunder showers are continuing to fire up. You can see both of those features in the the satellite image to the right. The marine layer are the lower darker clouds and the thunderstorms are the higher lighter clouds.
The thundershowers will continue through Thursday night east of the Cascades as an area of low pressure continues to move east. The lightning in the area means potential new fire starts. Red Flag Warnings are in effect through 11 p.m. Thursday for most of central and southern Oregon.
Temperatures will be much cooler as we finish out the week. Highs Wednesday only made it to 77° this is cooler than any other day in July. Thursday and Friday will be even cooler with highs in the mid 70s.
By this weekend we’ll start to clear out and warm up. Highs will be back to the mid 80s this weekend and upper 80s early next week.
Have a great day!
~Meteorologist Melissa Frey