Weather Alerts For Kahoka, MO

There is a Slight 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 AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF IOWA SUMMARY Severe thunderstorms capable of producing severe/damaging winds and large to very large hail are likely late this afternoon and evening across much of Iowa and vicinity. Isolated to scattered severe hail and damaging winds are possible over a broader area from parts of the southern High Plains to the Upper Midwest. Central Plains into the Upper Midwest Generally zonal/westerly mid-level flow will persist over the northern tier of the U.S. today, with an upper trough/low moving slowly eastward over central Canada. At the surface, the primary low will remain in northern Ontario, with a trailing cold front extending southward into the Upper Midwest and northern/central Plains. A secondary surface low will likely exist over southwest KS/northwest OK by peak afternoon heating. A dryline will extend southward from this low across much of the southern High Plains. Current expectations are for robust thunderstorm development along the cold front/surface trough from eastern NE into IA to be delayed until late afternoon or early evening (around 22-00Z), as large-scale ascent will remain weak until a low-amplitude shortwave trough embedded within the westerly mid-level flow eventually overspreads the surface warm sector. Continued low-level warm/moist advection through the day and diurnal heating will contribute to the development of moderate to locally strong instability across this region by early evening. While low-level winds are forecast to remain fairly modest, enhanced mid/upper-level flow will support sufficient deep-layer shear for updraft organization. Initial supercells should pose a threat for large to isolated very large hail (2+ inches in diameter), before likely quick upscale growth this evening across IA supports a risk for mainly scattered severe/damaging winds. Some of these gusts could exceed 75 mph on a localized basis given the expectation for an organized cluster and ample instability. A tornado or two could also occur this evening as low-level shear gradually increases with a strengthening low-level jet. Some adjustments have been made to the Slight and Enhanced Risk areas based on latest observational trends and short-term guidance. Namely, the Slight Risk has been extended northward into parts of southeast MN/southwest WI, where some risk for hail-producing supercells should exist along/ahead of the front. The Enhanced Risk has also been expanded to include more of western IA, as multiple supercells may form and eventually congeal into one or more bowing clusters through the evening. Southern High Plains Robust daytime heating will yield a very well-mixed/deep boundary layer near/south of the secondary surface low over southwest KS and vicinity. Mid-level temperatures will remain cool enough to support at least weak instability, even with modest low-level moisture/surface dewpoints. A weak mid-level shortwave trough moving from the southern Rockies into the southern High Plains will enhance large-scale ascent late in the day. This should support the development of high-based thunderstorms, with occasional strong to severe wind gusts expected. Isolated gusts of 75+ mph may occur given the very deeply mixed boundary layer extending up to around 500 mb. Cells that develop in west/southwest TX may contain marginal hail, with elongated hodographs in mid/upper levels.

Pollen Index: 8.7 Pollen Level: medium-high Predominant Pollen: Birch, Maple and Ash. Pollen concentrations for Saturday will be falling in the moderate range. This decrease is due to rising humidity, strong winds and heavy rains in the morning which tend to wash pollen out of the air. The lower pollen levels are significant and should help allergy sufferers to cope tomorrow.