Weather Alerts For Frederick, IL

# HEADLINE -------------------- The Flood Warning continues for the following rivers in Illinois FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE # SUMMARY -------------------- Illinois River near Havana affecting Fulton, Mason and Cass Counties. Illinois River at Beardstown affecting Morgan, Brown, Cass and Schuyler Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. Illinois River Beardstown 14.0 17.9 Sun 9 am CDT 17.9 17.8 17.6 # DETAILS -------------------- WHAT Minor flooding is occurring and moderate flooding is forecast. WHERE Illinois River at Beardstown. WHEN Until further notice. IMPACTS At 18.0 feet, Seepage problems begin in the Lost Creek Drainage and Levee District. ADDITIONAL DETAILS - At 9:45 AM CDT Sunday the stage was 17.9 feet. - RECENT ACTIVITY The maximum river stage in the 24 hours ending at 9:45 AM CDT Sunday was 18.1 feet. - FORECAST - The river is expected to rise to a crest of 18.0 feet this afternoon. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood ISSUED AT Sunday, May 3, 2026 at 9:58 AM CDT ISSUED BY National Weather Service Lincoln IL HEADER Flood Statement # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov.

There is a Marginal Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE MIDDLE MISSISSIPPI VALLEY SUMMARY Isolated severe storms capable of hail and gusty winds are possible mainly this evening across northern/eastern Missouri into south-central Illinois. Northern/eastern Missouri into south-central Illinois Airmass modification and modest-caliber moist advection will occur north-northeastward into the region along and south of a decelerating southeastward-moving front. The limited low-level moisture, coupled with strong heating and mixing, should keep the airmass across the region capped through the afternoon. However, toward/after sunset, sufficient moistening atop the decoupling boundary layer should support increasing thunderstorm development this evening. Convection will tend to be rooted around 750-850 mb, and while elevated buoyancy will not be robust, the steep lapse rates could yield some severe hail (and possibly gusty winds) in the presence of 40+ kt shear through the cloud-bearing layer. Far South Florida While a couple of strong storms could occur through the afternoon, cloud cover and an increasingly prevalent post-frontal regime, along with weak lapse rates in the cloud-bearing layer, should tend to limit storm intensity inland. Northern California/southwest Oregon Thunderstorms are expected along the northern periphery of the upper low off the central California coast. Increasing mid-level moisture and cold mid-level temperatures will support modest buoyancy amid moderate easterly flow aloft, supporting the potential for small hail and gusty winds with these westward progressing storms during the late afternoon and early evening. However, organized severe storm potential is expected to remain low.

Pollen Index: 10.3 Pollen Level: high Predominant Pollen: Maple, Birch and Oak. The amount of pollen in the air for Monday will be falling but will remain in the high range. This forecast of lower pollen concentration is based on rising humidity and expected precipitation in the morning and evening which tends to wash pollen out of the air.