Dry pattern coming to an end as rainy and cooler weather arrives late Tuesday

Bend, Ore (KTVZ) – Dry and warm day to end the month of August and the meteorological summer. Summer is defined by scientists as the three warmest months of the year ending with August. Highs today will hit the middle 80s ahead of a major cool down and rainy period the rest of the week.

As if someone turned on a switch, the first day of September will begin a rainy pattern. The rain will not arrive until very late in the day, more than likely the evening. The early portion of the day will be sunny then the clouds move in as the day moves along. I call this the transition day as the atmosphere sets up for the rain. This is what we have been looking for as the region is parched and the rain will be beneficial.

Wednesday will be a rainy day with showers most of the day. The rain is not expected to be heavy, just steady. This week will see a chance for rain each day into the weekend. The first week of September will be wet and that will be great for the fire fighting efforts. The smoldering hot spots throughout the 2.5 million acres that have burned this season will be slowly soaked. The only concern I have late in this forecast period will be the chance for some debris flows in some of the more mountainous sections of our numerous burn scars.

Thursday will be a mix of some sunshine and some rain.  The rain becomes slightly more widespread on Friday followed by some clearing on Saturday before more rain returns on Sunday.

The rain is expected to linger into Monday before we return to a dry pattern the following week.

The reason for all the rain will be the result of a couple of low -pressure systems that will spin through the Pacific Northwest. The first will stay off the coast Wednesday before developing and maturing and linger off the coast before moving through the region late in the week. The pattern lingers with developing lows off the coast providing the PacNW with rain for several days starting late Tuesday and lasting into next week.

Please, Stay safe and smart.

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