Weather Eye: Jostling of cool, warm air make thunderstorms possible

By Patrick Timm, Columbian weather columnist

Published:

 
photoPatrick Timm

After Sunday's brief downturn in the weather, Monday skies were bright blue for the most part, with afternoon temperatures getting up to seasonal normals — 80 to 83 degrees.

Although I didn't receive any measurable rainfall Sunday at my home in Salmon Creek, areas south did. The official tally for Vancouver was 0.12 of an inch. Most of the lightning and associated thunderstorms remained over and east of the mountains.

Today will be slightly warmer, which will help create more instability. With cooler air in a southeasterly flow aloft and an upper low slipping down off the southern Oregon coast, the dynamics will make today our best chance of thunderstorms.

We may also see scattered thunderstorms or showers the next few days, and temperatures will depend on the cloud cover. The rest of July looks dry and warm, as it should be.

Remember the safety rules if lightning comes near -- get inside. Lightning can strike from miles away even in clear blue skies. We already had our lightning awareness week here a few weeks ago.

With a more southerly flow of air, we may see 90 degrees Sunday or Monday. East of the Cascades, I wouldn't be surprised to see a 100 degree high here and there.

Five east-side locations had their wettest Junes yet. With June measurements and the years records began:

• Boundary Dam, 8.30", 1966.

• Newport, 6.24", 1910.

• Colville, 6.09", 1900.

• Republic, 4.21", 1900.

• Walla Walla, 3.50", 1949.

Patrick Timm is a local weather specialist. His column appears Tuesdays, Thursdays and Sundays. Reach him at Weather Systems.