Read the latest StormTrack 5 Forecast

POSTED: 6:28 PM Feb 27 2013   UPDATED: 3:33 PM Jul 05 2015
StormTrack 5 Team

FLASH FLOOD WATCH IN EFFECT THROUGH TONIGHT

HEAVY RAINFALL AND LOCALIZED STREAM FLOODING POSSIBLE

TEMPERATURES REBOUND - RAIN CHANCES DECREASE A BIT NEXT WEEK

Tonight: Isolated shower possible. Stream flooding possible. Lows 63-66.

Monday: A few showers and storms, especially in the afternoon.  Partly sunny and humid. Highs 79-85.  West wind 5-15 mph.

Monday Night: Showers ending and clouds decreasing.  Lows 60-65.  Light wind.

Tuesday: Hit or miss afternoon thundershowers possible.  Otherwise, mostly to partly sunny, warm and humid.  Highs 80-87.  Southwest wind 5-15 mph.

Weather Summary:

An upper level low pressure system continues to move through our area very slowly.  Earlier on Sunday, this was directing winds over the south.  The air then dried and warmed as a result in the Tri-Cities, leading temperatures into the 80s.  Now as the system moves through the area, we'll continue to see hit or miss rain showers and storms through the evening.  Chances will decrease overnight.

There is still a good amount of moisture to deal with.  So, with heavy rain already falling over the area and new rainfall totals above an inch in spots, stream flooding becomes possible.  You may also see water accumulating in your yard as a result. 

Major impacts aren't likely, but a Flash Flood Watch is in effect for most of the region through the rest of the night. This means that we are WATCHING for potential flooding issues in the next day or so.  No flooding is imminent at this time. Keep this rule in the back of your mind:  If you approach a flooded roadway, Turn Around, Don't Drown!

This disturbance will slowly move north and east.  By Monday, showers and storms will be on a hit or miss basis, especially during the afternoon.  Afterwards, a ridge of high pressure builds in and helps to decrease rain chances - increase temperatures on Tuesday.  A few isolated showers and storms are possible Tuesday and Wednesday.  There stands about a 40-50% chance each day. 

Afterwards, the weather pattern becomes complicated.  Models are coming together on a low pressure system over the Pacific coast and high pressure over the southeastern US.  If this turns out to be the case, both systems would force anything substantial north of us.  That would result in high temperatures in the mid to upper 80s (90 in spots) with a daily shot at a few showers and storms.  Check back for updates on this situation.

Recap: Highs in the low to middle 80s this week.  Lows in the 60s.

Our average high is 86°, low 64°.

Meteorologist Chris Michaels