Area Forecast Discussion
Issued by NWS North Platte, NE
Issued by NWS North Platte, NE
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656 FXUS63 KLBF 141149 AFDLBF Area Forecast Discussion National Weather Service North Platte NE 649 AM CDT Tue May 14 2024 .KEY MESSAGES... - Scattered thunderstorms develop late this afternoon and continue into this evening. Some thunderstorms may be strong to briefly severe. - Showers and thunderstorms chances continue Wednesday as a cold front crosses the region. - Warm and drier conditions Thursday and Friday, with highs well above average in the low to mid 80s Friday. - A more active weather pattern returns Saturday night, and again Sunday night through Monday. && .SHORT TERM /THROUGH WEDNESDAY/... Issued at 346 AM CDT Tue May 14 2024 A shortwave trough was currently analyzed across central Wyoming and will progress eastward across western South Dakota and western Nebraska this afternoon. An inverted surface trough will extend from eastern Colorado into the western Sandhills by mid afternoon, where highs will warm into the upper 70s to around 80. Ahead of the surface trough, dewpoints will climb into the lower 50s, with MLCAPEs near 1000 J/KG. Mid- level flow increases in response to the approaching shortwave. Deep layer shear of 30-40kts is expected with a fairly straight line hodographs on forecast soundings. Isolated thunderstorm development is possible by mid afternoon near the surface trough across the western Sandhills, becoming scattered by late afternoon and early evening, primarily near/east of HWY 83. Strong to briefly severe storms are supportive, as the increasing deep layer shear could support some updraft organization. With pre-storm soundings indicating a fairly dry airmass up to 700mb, damaging winds should be the primary threat, although some marginally severe hail may accompany the strongest storms. A Marginal Risk for severe storms is forecast by SPC west of Highway 281. All activity will continue to move east after sunset, while also weakening with the loss of diurnal heating. A longwave trough will move into the Dakotas and Wyoming overnight, pushing a cold front at least halfway through the area. This will keep chances for showers and a few thunderstorms to the western Sandhills and southwest after midnight as well. On Wednesday, this main upper trough will move across Nebraska, maintaining chances for showers and a few thunderstorms. The focus for any strong storms will reside across Kansas into southeast Nebraska, as a cold front moves through western Nebraska. Highs will be cooler from the mid 60s to low 70s with partly to mostly cloudy skies. && .LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... Issued at 346 AM CDT Tue May 14 2024 After a few lingering showers or storms Wednesday evening, mainly dry conditions expected Thursday though Friday as mid level height rises occur. Highs by Friday to warm into the low to mid 80s. Storm chances increase Saturday night, and again Sunday night through Monday as an upper ridge persists across the Southern Plains and an upper trough develops across the Western U.S. This will result in a more active weather pattern across the Northern into the Central Plains. Highs in the upper 70s to mid 80s Saturday to the mid 70s to near 80 Monday. && .AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/... Issued at 638 AM CDT Tue May 14 2024 Winds will be light this morning, generally around 10 kts or less, out of the south. Winds will be breezy in the afternoon around 10 to 15 kt with gust of 20 kts. There will be a chance for showers and thunderstorms this afternoon and evening, some storms could be strong to severe with gusty winds and hail. && .LBF WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...Roberg LONG TERM...Roberg AVIATION...Gomez