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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 239 AM EDT Sun May 14 202

3Valid 12Z Sun May 14 2023 - 12Z Tue May 16 202

3...Record breaking heat in the Pacific Northwest...

...Additional heavy rain and flooding possible for parts of the Southern Plains and Middle Mississippi Valley...

A quasi-stationary front draped across the Southern Plains and Middle Mississippi Valley will be the focus for additional heavy rainfall over the next couple of days. Bits of upper-level energy flowing along a north-south axis from the Gulf into the Central Plains will enhance instability and moisture over the region leading to increased thunderstorm activity. Slight Risks of Excessive Rainfall leading to Flash flooding are in effect over parts of the Texas Gulf Coast over the next couple of days due to the heavy rainfall potential over well saturated soils from this weekend's storms. Additional rainfall of 1-2" are possible over portions of south Texas and the Middle Mississippi Valley by Tuesday morning. Things should quiet down across the aforementioned areas by midweek as the front sags southward into the Gulf.

Record breaking heat will impact the Pacific Northwest over the next couple of days while well below average temperatures impact the Great Plains. High temperatures will be in the upper 80s and 90s, while lows will be in the upper 50s and 60s across coastal Washington and Oregon today, which may tie or break existing records. These temperatures will be 20-30+ degrees above average for this time of year. Temperatures will remain above average across the Deep South, while upper troughing will bring cooler air to much of the northeastern quadrant of the country. Showers and thunderstorms may develop in the Mid-Atlantic and Southeast coast along the stationary boundary extending from the Middle Mississippi Valley into the Atlantic.


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