10am Friday: Final Lightning Chart

July 20, 2012

Here’s a final lightning map, showing strikes over the past 24 hours.  Strikes before 9:30pm Thursday are in blue.

This illustrates how tough it is to forecast thunderstorm development.  Model forecasts (and ours) said there was going to be some sort of overnight event, but picking exact locations for thunder was tough.  Some spots were nailed several times (eastern Clark County, Multnomah County, and Hood River County).  But some of you were totally left out.  Almost all of Marion & Yamhill Counties were missed.  Same with extreme NW Oregon and Linn County.  Who would have thought there would be no lightning in the Central Cascades???  I even got an email from a competitor complaining that he was stuck in Central Oregon seeing nothing while we had a nice light show here.

If you missed out, you’re not alone.  I saw ONE flash on the 37 mile drive home last night, then it was all quiet.  Nothing the rest of the night, then AFTER daylight, lots of lightning with the band that moved up the eastside around 5-6am…I didn’t see much of anything.  Observing lightning from a concrete bunker (TV station) isn’t the preferred method!

On a side note, it’s always amazing how usage of the blog really heats up with exciting weather.  I think yesterday had more hits than any day since the mid-March snowfall!

Chief Meteorologist Mark Nelsen