A high pressure area is currently dominating our weather, bringing warm and humid southerly winds into the area, which will contribute to our storm chances on Wednesday. Forecasters expect breezy conditions to continue Tuesday, becoming more gusty Wednesday. Highs each day will be in the mid-80's, with lows in the upper 50's to lower 60's, with some overnight clouds. A Wind Advisory is likely for Tuesday, and almost assured for Wednesday.
Severe weather and heavy rainfall will be the focus for Wednesday night into Thursday morning. A warm, moist, and unstable airmass will build ahead of an approaching cold front. This instability will set the stage for severe thunderstorms capable of damaging winds, a few tornadoes and large hail.
A few discreet supercell storms may move through, or develop over, the Delta area and other locations along and near the Mississippi River just ahead of the cold front. While this development is not assured, the potential does exist. A squall line is expected to develop along the front and sweep through the state as the front passes during the night. With the loss of daytime heating, the severe potential may be less for the eastern portion of the state.
We'll likely see heavy rainfall in the Delta, with 1 to 2 inches possible across the area, with locally higher amounts possible. The maps below indicate rainfall forecasts as of Monday evening. The first map shows rainfall forecast from 7pm Tuesday to 7pm Wednesday. The second shows the forecast from 7pm Wednesday to 7pm Thursday.
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