Jeff Ray , CBS-11

FORT WORTH (CBSDFW.COM) – There is a risk of severe weather this afternoon and evening along a frontal boundary that has stalled over north Texas.

This includes a very slight risk of tornadoes. More likely there will be strong storms that can produce large hail and a heavy rain event.This risk includes the DFW area.

Later tonight the worst of the heavy rain, and possible hail threat will stretch along and NORTH of the front tonight. That means the Red River counties but the position of the front will have to closely monitored.

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This frontal boundary is going to hang over our area for the next couple of days and this means a very big rain event for us is possible tomorrow as well. While this is music to the ears of agricultural interests and water supply enthusiasts this could possible create an urban flooding threat by Sunday afternoon into Monday.

We also have the risk of severe storms tomorrow along a Hillsboro to Paris line while heavy rain should be training over the metro area.

But perhaps the biggest shocker will come along through the course of the day Sunday as a brisk northeast wind brings cold air into at least half of our area.

A sharp contrast of temperatures will set up tomorrow along the frontal boundary; it’ll be in the upper 70’s′ down by Corsicana and Athens while it’ll be in the 50′s in Gainesville and Decatur. I’m expecting the DFW area to be only in the low 60′s/upper 50′s by afternoon tomorrow with cloudy skies and sometimes heavy rain. It appears the heaviest rain will come mid-day to evening tomorrow along the frontal boundary on a SW to NE axis across DFW and east.

Two inches of rain in some areas  possible in a set-up like this. Strong winds will blow along this sharp temperature contrast.

This rain should continue into Monday, sometimes heavy; with cloudy skies and a north wind I expect highs to flirt with a record. Highs could only reach into the mid-50′s on Monday! The all time record minimum high for that date is 57°.  By  Tuesday morning we will get close to another record: the low is forecast to get to around 43°, the record is 41°.  The sun should break out on Tuesday afternoon and highs should reach to the upper 60’s.

So in summary: Severe threat this afternoon and evening. Severe threat Sunday afternoon in our southeast. Heavy rain and large hail along the northern tier counties tonight. Heavy rain tomorrow (metro to the NE) with much cooler temperatures. Cold and wet Monday with near record lows by Tuesday morning.