A RED FLAG WARNING is in effect for southern Oregon from 2 to 11pm Tuesday. This warning includes most of Douglas Josephine and Jackson counties. Thunderstorms are possible across extreme southern Oregon today; the threat of lightning from these storms places the region on high alert for fires.
A weak storm at about 20,000 feet in the atmosphere is sending some heat and moisture our way from the Pacific Ocean. Thunderstorms will develop around 2 or 3 in the afternoon and head north from Northern California into Southern Oregon. Locations north of Roseburg have only a very minor chance for any rain or thunder, but location south of Roseburg have a decent chance for a few storms to roll overhead.
The Umpqua region will be busy over the next few days. Skies will start mostly sunny with clouds increasing by the afternoon and evening. Showers and thunderstorms will develop to the south and slowly march north. Lightning is the biggest concern from these storms. Many area will be dry, but the few areas where a storm rolls over will see gusty winds and periods of heavy rain. Highs will top out in the mid 80s today.
In the southern Willamette Valley, temperatures will only manage to warm into the mid 80s today. Clouds across the region will help to keep things cooler. Winds at the surface will take on a northwesterly direction and vary between 5 and 15 mph. Breezier winds will be seen in the afternoon and evening.
Along the Coast, persistent weather continues. Morning fog cause by some onshore flow will slowly lift to mostly cloudy skies by the afternoon. Temperatures will be mild and in the 60s. Winds will get gusty for later portions of the day.
Updated this morning by meteorologist Travis Knudsen Tuesday, July 7th, 2015.