Bruce Mound Ski Area Snow Report

870 FXUS63 KLSX 100439 AFDLSX Area Forecast Discussion National Weather Service St Louis MO 1039 PM CST Mon Nov 9 2026 .KEY MESSAGES... - Above average temperatures through midweek with cooler, near- normal temperatures returning for the second half of the week. - Isolated to scattered showers are possible (30-50% chance) on Wednesday, mainly along and east of the Mississippi River. && .SHORT TERM /THROUGH TUESDAY NIGHT/... Issued at 1221 PM CST Mon Nov 9 2026 The upper-level ridge is expected to gradually degrade as it is nudged eastward by a shortwave trough. This will revert much of the region back to a zonal flow regime as a surface cold front sinks into far northern Missouri overnight tonight. As this boundary is expected to stall and drift no further south than the I-70 corridor, conditions for the vast majority of the area will likely be very similar to those noted today with high temperatures in the upper 60s and even low 70s. On the other hand (or side of the cold front, if you will), temperatures are more likely to peak in the mid 60s. Confidence is high (>95%) in maximum temperatures above 60F across the entire forecast area on Tuesday with many locations anticipated to exceed normal high temperatures by 5-10 degF, even on the cool side of the boundary. Dry low/mid level conditions should continue to impede cloud cover, even in the vicinity of the surface front. Radiational cooling overnight could reintroduce some patchy fog, primarily in river valleys, but the shallower temperature gradient should limit any widespread development. && .LONG TERM /WEDNESDAY THROUGH MONDAY/... Issued at 1221 PM CST Mon Nov 9 2026 An Alberta Clipper system will surge southeastward on Wednesday, ushering the stalled boundary through the region as a cold front. A downward trend in the likelihood and coverage of precipitation across eastern MO/western IL has been noted in the guidance. This is likely a consequence of several factors, including poor low-/mid-level moisture return given deep layer westerly flow in advance of this system as well as the timing/trajectory of the cyclone. Although isolated/scattered showers cannot be ruled out, they do seem to be more highly favored to the north and east. As such, PoPs were lowered slightly...now roughly 30-50% along and east of the Mississippi River and 15-30% to the west. Behind this system, cooler temperatures will spread across the Midwest behind this system while a longwave trough deepens over the eastern third of the CONUS. As northwesterly flow settles in aloft and the offset longwave ingests various shortwaves, much cooler temperatures (highs in the 40s/low 50s and lows in the mid-20s to mid-30s) will infiltrate the region with continued, low-end potential for occasional light showers/drizzle late week. Not too dissimilar to Wednesday, these precipitation chances are greatest over the eastern portions of the forecast area where greater upper-level support exists. At the very least,the end of the work week looks cloudier than it started. Though specifics on the timing and extent are yet to be fully understood, another warm-up appears in store sometime this weekend into early next week with height rises well-agreed upon in ensemble clusters. Ensemble probabilities of high temperatures greater than 60F increase from 25-45% on Sunday to 60-75% by Wednesday. While signs do seem to point to another stretch of above normal temperatures, it`s not fully clear when exactly these conditions will take root. && .AVIATION /00Z TAFS THROUGH 06Z WEDNESDAY/... Issued at 1038 PM CST Mon Nov 9 2026 As has been the case the last several days, the primary concern this TAF period will be the development of river valley fog. Conditions are not expected to be as favorable for fog as previous nights, but at least some impacts are forecast at KSUS, KCPS, and KJEF early Tuesday morning. Fog will dissipate through around 13 or 14z. Otherwise, VFR flight conditions and light winds will prevail. && .LSX WATCHES/WARNINGS/ADVISORIES... MO...None. IL...None. && $$ SHORT TERM...WFO EAX LONG TERM...WFO EAX AVIATION...Pfahler