WEATHER SUMMARY AND FORECAST DETAILS
Brought to you by:
FROM MEDFORD NWS 10/9
The forecast is on track with cold frontal passages expected to focus precipitation on our area during early Friday morning through Friday evening, and late Sunday night into Monday night.
It will be breezy and cooler today with light rain chances mainly over the Cascades, and the strongest southerly winds of 20 to 30 mph with gusts to 40 mph in the Shasta Valley, and breezy winds also from the Cascades eastward. Rain chances increase tonight into Friday night as a cold front produces a wetting rain at least from the coast to the Cascades, and possibly on the east side. This will include snow at elevations above 6000 feet, a slight chance of mainly coastal thunderstorms (possibly extending across Douglas County during Friday afternoon), and windy conditions on the east side. Storm total rainfall is expected to be highest for Curry, western Josephine, and western Siskiyou counties at around a half inch to an inch. Meantime, amounts of around 0.15 inches to a half inch are expected elsewhere from the coast to the Cascades, and up to a quarter of an inch on the east side.
Cold temperatures and light rain chances are expected during the weekend with a series of weak disturbances in the north to northwest flow aloft. Amounts of less than a quarter of an inch are expected to be common, with the highest probability of rain for Coos and Douglas counties northward.
Another strong cold front will follow on Monday with rain likely and another slight chance of coastal thunderstorms. The main difference compared to Friday is that this closed upper level low is expected to move southward across our area, rather than eastward. As such, slight differences in the storm track will have a large impact on the duration and amount of precipitation. But, the highest probability is for snow levels to again be around 5500 to 6000 feet with precipitation focused from the coast to the Cascades and new precipitation amounts of around a tenth of an inch to an inch. Monday looks to be the coldest day of the week with highs mainly in the 50s, except some 40s on the east side.
Forecast confidence diminishes beyond Monday. Weaker disturbances in a cold, active, northerly flow pattern are likely to travel across the region during Tuesday and Wednesday with additional light rain chances. But, the model spread is greater regarding the track of these disturbances. Wrap-around showers may linger on Thursday, or we may get a break between systems with temperatures trending higher by several degrees, almost back up to normal.
The above information is made possible by First Strike Environmental. Providing emergency response and management of hazadous materials incidents and also response for wildland fire fighting, First Strike is the first call of many state and federal agencies. They are a Southern Oregon family owned company in Roseburg. Proud to sponsor Rogueweather.com.
