Christie Mountain Ski Area Snow Report

900 FXUS63 KLSX 310805 AFDLSX Area Forecast Discussion National Weather Service St Louis MO 305 AM CDT Mon Aug 31 2026 .KEY MESSAGES... - A Heat Advisory is now in effect for the entire area through Friday, with daily heat index values peaking around 100 degrees. && .SHORT TERM /THROUGH TUESDAY NIGHT/... Issued at 231 PM CDT Sun Aug 30 2026 Broad upper-level ridging is encompassing the eastern 2/3rds of the CONUS per morning water vapor imagery as an expansive surface high sits over the Southeast. With the CWA on the northwestern periphery of the surface high, winds are southerly, signaling that warm air advection continues. As daytime heating commences, the pressure gradient will tighten and cause surface winds to shift to out of the southwest. This will lead to adiabatic warming via downsloping off the Ozark Plateau, further boosting our temperatures to reach some of the warmest highs we`ve experience this summer. Widespread values in the upper 90s are forecast, with a couple locations potentially hitting 100. Compared to previous heat waves this summer, humidity will be lower, with dew points in the mid to upper 60s yielding heat index values around 100 degrees this afternoon. With the pattern holding through at least tomorrow, the forecast for Tuesday is nearly identical to today. With a similar degree of heat forecast through the end of the workweek, a Heat Advisory is in effect for the entire area, including the counties that had been under an Excessive Heat Watch. An Excessive Heat Warning may be needed later in the week for portions of the CWA, especially after dew point trends for Tuesday and Wednesday become clearer. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... Issued at 231 PM CDT Sun Aug 30 2026 Little change is expected to the upper-level pattern and our local weather through the extended forecast period when compared to the short term forecast period. The ridge will gradually amplify toward the end of the workweek, with guidance converging on a common placement of the ridge axis just east of the Great Plains. This will keep the thermal ridge mostly in place over the Middle Mississippi Valley and 850 mb temperatures steady. Toward the end of the weekend, some guidance shows that a backdoor front may push the thermal ridge westward and take the edge off of the heat, but a majority of guidance currently shows it continuing. An uninterrupted fetch of Gulf moisture into the area supports dew points increasing through the end of the week, though by high much remains uncertain. Guidance consensus is that the CWA will be on the northern periphery of greater dew points through the period, with slight changes in the placement of the upper-level ridge dictating the exact placement of this moisture. Confidence is high that surface winds will be southwesterly daily, leading to a local decrease in dew points thanks to downsloping off the Ozarks. These factors combined with a seasonal dearth in evapotranspiration lead to low confidence in the NBM`s dew points. Current values lead to pockets of heat index values just over 105 degrees, and if that is realized, a targeted Extreme Heat Warning may be needed. If dew points trend lower than currently forecast, the Heat Advisory will continue through the end of the week area-wide. && .AVIATION /06Z TAFS THROUGH 12Z TUESDAY/... Issued at 1132 PM CDT Sun Aug 30 2026 Confidence is high in dry and VFR flight conditions through the entire TAF period at all local terminals. && .CLIMATE... Issued at 305 AM CDT Sat Aug 29 2026 Record Highs...Record High Lows (value/year): August 31 KSTL: 103/2013...79/2013 KCOU: 103/1913...78/1947 KUIN: 100/2011...76/1924 September 1 KSTL: 104/2011...82/2011 KCOU: 102/1913...76/1913 KUIN: 104/2011...78/2011 September 2 KSTL: 101/2011...80/2011 KCOU: 100/1913...77/1913 KUIN: 103/1913...80/1913 September 3 KSTL: 101/2011...80/1913 KCOU: 103/1939...75/1939 KUIN: 103/1913...78/1913 && .LSX WATCHES/WARNINGS/ADVISORIES... MO...Heat Advisory from noon today to 8 PM CDT Friday for MOZ018- 019-026-027-034>036-041-042-047>052-059>065-072>075-084- 085-099. IL...Heat Advisory from noon today to 8 PM CDT Friday for ILZ058>060-064-065-069-070-074-079-095>102. && $$ SHORT TERM...Elmore LONG TERM...Elmore AVIATION...Elmore CLIMATE...Elmore