NZUS93 KDVN 191936 LLLDVN IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-009-015>018- 024>026-034-035-MOZ009-010-200736- Public Information Statement National Weather Service Quad Cities IA IL 136 PM CST Tue Nov 19 2024 Short Term Tonight... A quiet night will be ahead of us, as the closed upper low continues to meander southeast. A bout of energy will gyrate around the low late tonight, which will bring in a band of low-mid clouds, moving out by daybreak and allowing clear skies to start the day. Much of guidance keeps us dry as this passes through tonight, but there are some that indicate the chance for a drizzle or light rain as this band moves through. Although, the latest HREF keeps the area dry through the night. Thus, we will follow the dry forecast through the night, with temperatures in the mid-upper 30s. Winds will be much lower tonight than they were the previous night as well, with westerly winds around 5-10 mph forecast. Tomorrow... An interesting and, dare we say, wintry day may be ahead of us. The upper low that continues to slowly pass into the Great Lakes Region will continue to gyrate bouts of energy around the upper low, which will result in sporadic showers through the day tomorrow. While the surface temperatures will be between 40-45 for some, model soundings indicate a vertical profile favorable for snow showers as the primary precipitation type tomorrow, especially in the afternoon. As the showers move into the area in the morning, we may see a mix of rain/snow before transitioning to mainly snow. Overall, the areas with the best chance to see snow showers will be along and north of Interstate 80. The bout of energy bringing these showers will push in mid-morning, giving us a timing between 10am-5pm for the heaviest snow showers, with some residual showers continuing into the evening. Environmental parameters are lining up and highlighting the potential for heavier snow showers, or possibly even a snow squall or two. Granted, given the ambient and pavement temperatures, we are not expecting much on the flash freeze side, when it comes to snow squalls. Rather, in the heavier snow showers, we can expect some enhanced wind gusts of 30-40 mph mixing down, with visibilities down to a half mile or less at times. These showers will persist on and off through much of the day and into the evening, waning away as the bulk of the energy pushes out tomorrow night. Now to answer the question most may be thinking, how much snow will we see? Fortunately, pavement and ground temperatures remain warm enough that much of the snow should melt upon hitting the ground. In the evening, when we start to cool off, we may see an increased risk for slick spots on sidewalks and roads that continue to see heavier snow showers. Confidence in this is low. Long Term Thursday/Friday... Thursday, we will remain under some influence of the upper low as it centers over the Great Lakes. This will continue to bring bouts of energy near the area tomorrow morning mainly, which can result in some scattered rain/snow showers once again. This will mainly be for areas along and east of the Mississippi River. After the wave continues to push east, high pressure will build into the region, bringing cooler temperatures. Much of the area will remain in the low 40s through Thursday, with temperatures increasing into the mid 40s on Friday. Thursday will be another breezy day, as the close proximity of the low will result in gusty conditions again. That afternoon, we can see wind gusts upwards to 30-40 mph once again, especially east of the Mississippi River. Friday, the low will be far enough east, which will allow winds to remain calmer than the previous days, generally looking at winds of 10-15 mph. Weekend and Beyond... Behind the upper low, we will be left in weak ridging to near zonal upper level flow going into the start of the week. Thus, we are looking towards a relatively quiet weekend, with seasonal temperatures. As was mentioned in the last forecast, there is a weak impulse on the horizon, generally looking at the late Sunday/Monday timeframe, which will bring our next chance for precipitation. Temperatures look to be warm enough for it to mainly be a rain event, if we see precipitation. Although, guidance output is quite variable for that timeframe. Going into midweek, it does look like the pattern will be wavier/more active, which may bring further chances for precipitation.