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Short Range Public Discussion
 
(Caution: Version displayed is not the latest version. - Issued 2012Z Feb 27, 2021)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 312 PM EST Sat Feb 27 2021 Valid 00Z Sun Feb 28 2021 - 00Z Tue Mar 02 2021 ...There is a Slight Risk of excessive rainfall from parts of the Lower Mississippi Valley to the Central Appalachians/Ohio Valley through Monday morning... ...Snow over the Upper Midwest into parts of the Northeast through Monday evening... A front extending from the Mid-Atlantic to the Central Plains, then westward to the Southwest will slowly move eastward to off the East Coast by Monday. Moisture pooling along the front will help produce rain and thunderstorms from the Southern Plains to the Southern Ohio and Tennessee Valleys, with rain extending from Central/Southern Appalachians into the Mid-Atlantic through Monday. The WPC has issued a Slight Risk of excessive rainfall from parts of the Lower Mississippi Valley to the Central Appalachians/Ohio Valley through Monday morning. The heavy rain along the front will produce scattered areas of flooding, with the most vulnerable areas will be urban areas, roads, and small streams. Isolated areas of significant areas of flash flooding are possible from Saturday evening into Monday morning. In the meantime, a wave of low pressure over the western end of the front will move from the Southern Rockies into Mexico by Monday. The wave will help produce snow over parts of the Southern Rockies into the Panhandle of Texas on Sunday afternoon into Monday afternoon. Another front extending from the Upper Great Lakes to the Northern Plains will slowly move eastward to the Northeast by Monday. Light snow will develop along the Northern Plains boundary into the Upper Great Lakes through Sunday evening. Also, pockets of rain/freezing rain will develop over parts of the Upper Mississippi Valley. Areas of rain will move into the Great Lakes on Sunday afternoon into late Sunday night. Also, overnight Sunday rain will move into parts of the Northeast that will change over to snow from west to east over the Lower Great Lakes/Ohio Valley into the Northeast on Monday morning into Monday evening. Along the rain/snow line, rain/freezing rain areas will develop over parts of the Northern Mid-Atlantic/Northeast. Meanwhile, an upper-level trough over the Northern/Central Rockies will move eastward to the Upper Great Lakes to the Southern Rockies by Sunday evening. The energy will help produce light snow over the Northern/Central Rockies on Saturday evening, ending overnight. Onshore flow will help produce coastal rain and higher elevation snow over parts of the Pacific Northwest through early Monday morning. On Monday, a front will approach the Pacific Northwest and start to move inland by Monday evening. Elsewhere, fire weather is a concern across portions of the Southern High Plains and Red Flag Warnings are in place there. Gusty winds are possible in the southwestern U.S. and parts of California in particular, so scattered Wind Advisories and High Wind Watches are in effect on Saturday evening into Sunday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php