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Short Range Public Discussion
(Caution: Version displayed is not the latest version. - Issued 1910Z May 29, 2023)
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 310 PM EDT Mon May 29 2023 Valid 00Z Tue May 30 2023 - 00Z Thu Jun 01 2023 ...Widespread scattered showers and thunderstorms expected for large portions of the central U.S. into the Northern Rockies and northern Great Basin... ...Showery conditions likely across the Southern Mid-Atlantic through Tuesday and developing across portions of Florida Wednesday... ...Much above average temps expected along the northern tier of the nation, while cooler than average temps accompany the showers across the Southeast portion of the nation... The large scale flow across the Lower 48 remains fairly blocked over the next few days, characterized by a mean trof across the western half of the country, another trof from the southern Mid-Atlantic into the Southeast and a closed upper high from the Great Lakes into the Northeast. The mean trof pattern across the western U.S. will support widespread scattered showers over the next two days from northern California through the northern Great Basin, Northern Rockies and across much of the Plains states. Across these regions, isolated heavy rainfall amounts are possible along with isolated instances of flash flooding. Across the Southern Mid-Atlantic, a slow moving upper low will inch its way offshore during Tuesday. This system will continue to produce scattered showers across the Southern Mid-Atlantic on Tuesday, but as the system continues to push offshore, drier conditions expected on Wednesday. In the wake of this upper low moving offshore, another upper low is expected to form across the central Gulf of Mexico. Shower activity will become increasingly likely to the east of this developing upper low on Wednesday, bringing increasing rain chances for central to South Florida. This new upper low will be slow moving through the remainder of the week as it moves across the eastern Gulf and Florida, maintaining a wet pattern for central to South Florida into late this week. A closed upper high will remain parked across the northeastern portion of the nation from the Great Lakes into New England. Dry conditions and much above average temperatures will accompany this upper high with high temperatures 15 to 20 degrees above average across much of the northern tier from the Norther Plains, through the Upper Lakes, northern NY State into Northern New England. Cooler than average temperatures over the next few days will be associated with the showery pattern across the southeastern U.S. and along the West coast into the Desert Southwest. Oravec Graphics available at