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Short Range Public Discussion
(Caution: Version displayed is not the latest version. - Issued 2026Z Sep 29, 2023)
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 426 PM EDT Fri Sep 29 2023 Valid 00Z Sat Sep 30 2023 - 00Z Mon Oct 02 2023 ...Additional heavy rain possible across parts of the Northeast tonight, followed by drier conditions this weekend... ...Widespread precipitation and well below-normal temperatures expected across the western U.S.... ...Well above-normal to record-breaking heat forecast for parts the central U.S.... ....Locally heavy rainfall with isolated flooding possible across the southern High Plains... A slow-moving coastal low centered east of the Mid Atlantic states will continue to support localized areas of heavy rain into the overnight across portions of the Northeast. This includes the New York City metro into the lower Hudson Valley and southwestern Connecticut, where several inches of rain and significant flooding have already occurred. Conditions are expected to improve as the low begins to slide farther east on Saturday. Then high pressure and dry conditions can be expected across much of the Northeast by late Saturday and continuing through Sunday. Widespread precipitation and cooler temperatures will advance with a frontal system across the western U.S. this weekend. Showers and storms, including high elevation snow, are expected to spread south and east from the Northwest into the northern Rockies, Great Basin, and California by early Saturday, before extending into the northern Plains and central Rockies by early Sunday. Temperatures for most areas west of the Rockies are forecast to be well below normal through the weekend, with record cool temperatures expected across portions of central and southern California. Ahead of the precipiation, dry and windy conditions will prevail, resulting in elevated to critical fire weather conditions, extending from eastern Arizona and western New Mexico northward through western Colorado and eastern Utah into southern Wyoming on Saturday. In stark contrast to West, temperatures will be well above normal across much of the central U.S. Record temperatures are expected across portions of the central Plains into the mid Mississippi Valley on Saturday, where daytime highs are forecast to climb as much as 20 degrees above normal in some locations. The core of the anomalous heat is then expected to build farther north, with record highs forecast for parts of the Upper Midwest on Sunday. Above-normal to record-breaking heat is expected for portions of the southern Plains into the lower Mississippi Valley both days as well. Over the southern High Plains, southerly winds will bring an increase in moisture and a chance for showers and thunderstorms through the weekend. Some of these may produce locally heavy rainfall amounts, resulting in excessive runoff and flash flooding. Pereira Graphics available at