US Day 3-7 Hazards Outlook NWS Weather Prediction Center College Park MD 247 PM EDT Fri Oct 04 2019 Valid Monday October 07 2019 - Friday October 11 2019 Hazards: - Heavy precipitation across portions of the Northern Plains, the Northern Rockies, and the Northern Great Basin, Tue-Wed, Oct 8-Oct 9. - Heavy rain across portions of the Central Plains, the Middle Mississippi Valley, the Lower Mississippi Valley, and the Southern Plains, Thu-Fri, Oct 10-Oct 11. - Flooding possible across portions of the Central Plains, the Middle Mississippi Valley, the Great Lakes, the Upper Mississippi Valley, and the Northern Plains. - Flooding occurring or imminent across portions of the Central Plains, the Middle Mississippi Valley, the Great Lakes, the Upper Mississippi Valley, and the Northern Plains. - Flooding likely across portions of the Middle Mississippi Valley, the Upper Mississippi Valley, and the Northern Plains. - High winds across portions of the Central Rockies, the Central Plains, and the Southern Plains, Wed-Thu, Oct 9-Oct 10. - Much below normal temperatures across portions of the Central Plains, the Central Great Basin, the Northern Plains, the Northern Rockies, the Central Rockies, the Northern Great Basin, and the Pacific Northwest, Wed-Fri, Oct 9-Oct 11. - Much below normal temperatures across portions of the Central Plains, the Central Rockies, the Central Great Basin, the Northern Plains, the Southern Plains, the Northern Great Basin, the Southern Rockies, the Middle Mississippi Valley, California, the Northern Rockies, the Upper Mississippi Valley, the Pacific Northwest, and the Southwest, Thu-Fri, Oct 10-Oct 11. Detailed Summary: The medium range period (Monday, Oct. 7 through Friday, Oct. 11) will feature a more fall-like weather pattern, with a pair of cold fronts bringing multiple hazards. The first cold front will be found across the eastern U.S. on Monday morning and exit the East Coast by Tuesday. Heavy rain will be possible on Monday across the Northeast, but amounts around an inch didn't warrant a heavy rain area on the hazards chart. Temperatures across the East will start out slightly above average on Monday before dropping closer to average through the rest of the week. A second and stronger cold front is forecast to enter the Northwest and Northern Plains on Tuesday. Heavy precipitation (mainly in the form of snow, with rain in the lowest elevations) will likely spread across the Northern Rockies on Tuesday and Wednesday. Snowfall amounts could add up to over 6 inches from northwestern Montana to northern Wyoming. There is a chance that heavy rain/snow continues to push into the Northern Plains and Upper Midwest on Thursday and Friday, but confidence and snowfall amounts seem low enough to exclude a highlighted area today. As the cold front continues to push south and east, high winds will be possible across the High Plains from southeast Wyoming to western Oklahoma. Meanwhile, behind the cold front much below average temperatures will spread across the area. The cold air will enter the Northern Rockies and Northern Plains on Wednesday, before spreading south toward the Southern Plains by Friday. Maximum temperature anomalies of 20 to 30 degrees below average will be possible across Wyoming and western Nebraska. Low temperatures will drop below freezing across much of this highlighted region, or at least cold enough to lead to frost concerns. As the system enters the Central Plains and Middle Mississippi Valley on Thursday and Friday, heavy rain is forecast to overspread the region. Total rainfall amounts of 1 to 2 inches are possible. Across Alaska, a low pressure system will be exiting the southeast Alaskan Panhandle on Monday as another system enters from the west. This low (with embedded remnants of Tropical Storm Mitag) is forecast to bring gusty winds across western Alaska, as well as rain and snow showers across much of the state. All of these impacts currently fall below hazardous threshold. Snell