Area Forecast Discussion
Issued by NWS Goodland, KS
Issued by NWS Goodland, KS
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388 FXUS63 KGLD 041115 AFDGLD Area Forecast Discussion National Weather Service Goodland KS 515 AM MDT Tue Jun 4 2024 .KEY MESSAGES... - There is a low chance (10%) for severe hail this morning (through 10am MT / 11am CT) as storms develop and move east through the area. Small hail (generally less than 0.5") and heavy rainfall is more likely. A few instances of localized flooding is possible. - A less active weather pattern is anticipated through the remainder of the work week (late Tuesday through Friday), with above normal high temperatures in the 80s and 90s. && .SHORT TERM /THROUGH THURSDAY NIGHT/... Issued at 213 AM MDT Tue Jun 4 2024 Current satellite observations show a broad trough across the Western CONUS and Rockies. Near the surface, radar shows multiple outflow boundaries moving through the center of the CWA while the frontal boundary remains near the northwestern portion of the area. For this morning, the presence of all these boundaries makes for an interesting forecast. Most guidance does have storms firing up along the boundaries as the morning goes on. These storms would then move slowly east and clear the area by mid morning. The question is can there be any strong or severe storms with two main boundaries moving through a few hours apart. Effective shear continues to be analyzed at 20-30 kts which should hamper severe chances. But with MUCAPE near or slightly above 2000 J/KG for most of the area, small hail would be possible along with a 5-10% chance of reaching quarter to half dollar sized hail. These storms could also produce heavy rain with PWATs forecast to exceed one inch across most of the area. The heavy rain would allow for an instance or two of flooding. These storms will likely limit fog chances, but there would still be a chance for some patches of dense fog behind the storms. The remainder of the day will initially see skies clear as the upper trough axis swings through along with the surface front. This will allow temperatures to warm into the mid to upper 80`s. Cloud cover is then expected to briefly return from the west as some mid level moisture moves through. Tonight, skies will clear as the mid level moistures clears out while winds become light as the pressure gradient weakens. Lows are forecast to drop into the upper 40`s and 50`s. Fog looks to be unlikely with slightly lower moisture availability across the area. Wednesday and Thursday are forecast to see ridging aloft influence the area. This will help begin to warm temperatures and keep the area a bit drier. Wednesday is forecast to warm into the 90`s. However, a small disturbance/front could move through the area as the axis of the trough to the northeast swings through the Plains. While unlikely to produce precipitation due to much drier air above the surface (compared to recent days), this may help keep temperatures a bit cooler for Thursday with highs forecast in the mid to upper 80`s. && .LONG TERM /FRIDAY THROUGH MONDAY/... Issued at 145 AM MDT Tue Jun 4 2024 Long range guidance suggests a somewhat more active pattern in this period. Synoptic subsidence on the western periphery of an amplifying upper level trough over the eastern CONUS may aid in the development of a low-level (surface to 850 mb) ridge over portions of the Lower Mississippi River Valley and (potentially) an influx of rich low-level moisture from the TX Gulf Coast into portions of the Southern and Central Plains, where a synoptic regime characterized by modest WNW-NW flow aloft will persist.. a regime in which [1] small amplitude waves on the southern fringe of the mid-latitude westerlies may aid/enhance diurnal convective development on the lee slopes of the central/northern Rockies and [2] a large reservoir of instability (increasing with eastern and southern extent) may strongly support upscale convective growth and downstream propagation over portions of the Central and Southern Plains. In other words, a pattern supportive of long-lived mesoscale convective systems. && .AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/... Issued at 510 AM MDT Tue Jun 4 2024 For KGLD & KMCK... VFR conditions are forecast through the period, though thunderstorms are forecast to remain over or near the terminals for the next few hours. Storms have the potential to last all morning, but a cold front is beginning to push into the area and move the chances for storms off to the east. Once the storms push off, a mix of clouds and sun is forecast for the day. Winds will shift to out of the northwest and be gusty to around 20-25 kts at times. Winds tonight will then lower and gradually go from NW to E to SW. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...None. CO...None. NE...None. && $$ SHORT TERM...KAK LONG TERM...BV AVIATION...KAK