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Short Range Public Discussion
(Latest Discussion - Issued 1857Z Sep 27, 2023)
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 256 PM EDT Wed Sep 27 2023 Valid 00Z Thu Sep 28 2023 - 00Z Sat Sep 30 2023 ...A cool and wet weather pattern to persist across the Pacific Northwest... ...No changes to the wet pattern across Florida... ...Showery pattern to continue through the Ohio Valley and Lower Lakes and develop along the Mid-Atlantic coast into Southern New England... ...Warm dry conditions expected across much of the central portion of the nation... The recent wet weather along the Northwest coast will continue into middle to later portions of the week as the recent series of northeast Pacific frontal boundaries continue to push inland. Scattered showers in the wake of the strong front moving inland into the Northwest Wednesday/Wednesday night will be followed by another area of low pressure, associated frontal boundaries and additional precipitation, moving toward the Northwest coast on Thursday. While precipiation has been above average over the past week in this wet pattern, longer term drought conditions still plague the Northwest with large portions of Oregon and Washington State in severe to exceptional drought. The wet weather across the Northwest is also supporting continued below average temperatures from northern California, through the Pacific Northwest and into the Northern Rockies. Across these areas, high temperatures are expected to be 10 to 20 degrees below average over the next several days. A wet weather pattern also expected to continue across much of Florida for the next few days. A stationary frontal boundary is forecast to remain across the northern portion of the peninsula while a mid to upper level trof over the Gulf of Mexico helps to stream above average moisture values across the state. Additional heavy rains are possible across much of Florida Thursday and Friday, with isolated flash flooding possible, especially in urbanized regions. A slow moving mid to upper level low across the Mid-West will continue its slow slog eastward through the Lower Lakes into the end of this week. The showery pattern in association with this system will continue to produce area of moderate to heavy rainfall from the Ohio Valley, northward into portions of the Lower Great Lakes. Isolated flash flooding is possible with these rains, with the greatest threat across portions of west central Kentucky where the heaviest rainfall is forecast. As this mid to upper level low pushes eastward, it will begin to draw moisture northwestward off the western Atlantic and into areas from the coastal Mid-Atlantic to southern New England Thursday night into Friday, with increasing rain chances across these areas. While several area of the nation will be wet over the next few days, dry and warm weather will occur across large portions of the nation from the Southwest, through much of the Great Plains, Mississippi Valley and western to central Gulf Coast. Across these areas, summer like temperatures are expected, with day time highs between 10 and 20 degrees above average. Oravec Graphics available at