More Soaking Rain on the Way, Turning Colder

Posted on: 2:26 pm, January 11, 2013, by , updated on: 02:44pm, January 11, 2013

A very large and powerful upper-level trough is currently situated to our west and will approaching us piecemeal over the next week or so, keeping off and on rain chances in the forecast through the next seven days.


The precipitation we see over the next 48 hours should mainly be light to moderate rain with an occasional thunderstorm thrown into the mix. This is due to the lack of strong forcing close enough to provide more organized and heavy rain.

More widespread and heavy showers and  possibly some thunderstorms will likely begin affecting the area on Sunday as the first impulse of energy approaches the region. This wave will attempt to bring a cold-front slowly into the Valley Sunday into Monday, but it will likely slow or stall in our area, creating a long lasting rain potential. Most of the rain on Sunday will likely be seen during the second half of the day and continue through Monday with the highest rain totals by Monday morning occurring in our western areas where the rain will have arrived first. Note: The severe weather potential appears low through next week.

Potential for seeing 1 inch of rain or more from Sunday morning through Monday morning.

Potential for seeing 1 inch of rain or more from Sunday morning through Monday morning.

As the cold-front stalls or lifts north as a warm-front, the potential for heavy rain will continue into Monday, further piling onto the totals we are expecting during the previous night.


HPC Rain forecast for Monday

Rain should taper by Tuesday and Wednesday, as colder and drier moves into the region. We are watching the slight potential for a wintry mix late Monday night/early Tuesday, as shallow cold air interacts with any lingering precipitation. It looks like the heaviest rain will be gone by the time temperatures begin dropping, but any rain that does remain may have the potential to turn over to a mix of light rain, sleet, snow, or freezing rain. This is just a possibility we are keeping an eye on, and not a significant threat currently. Even if some form of frozen precipitation does occur, it looks like it should be mainly light.


The main brunt of this Western United States will be making it’s way across the Continental United States next week, and will likely provide us with another opportunity for rain late next week, possibly further adding to our already impressive rain totals.

HPC rainfall total forecast through next Friday morning.

HPC rainfall total forecast through next Friday morning.

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