Weather Alerts For Wellsville, MO

# SUMMARY -------------------- - Tornado Watch for portions of Central and Northeast Illinois Northeast Missouri Lake Michigan - Effective this Friday afternoon and evening from 330 PM until 1100 PM CDT. - Primary threats include... A couple tornadoes possible Widespread damaging winds likely with isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2.5 inches in diameter possible # DETAILS -------------------- SUMMARY - Thunderstorms have intensified across northeast MO, with some additional intensification possible as they continued northeastward into central IL. The airmass across the region supports supercells capable of all severe hazards, including very large hail and tornadoes. Another round of storms will follow in the wake of the ongoing storms later this evening as a cold front moves across the region. Wind gusts will be the primary risk with the storms along the front, but line-embedded circulations are possible as well. - The tornado watch area is approximately along and 75 statute miles east and west of a line from 50 miles west northwest of Valparaiso IN to 30 miles southeast of Jefferson City MO. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). AVIATION Tornadoes and a few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27030. ISSUED AT The NWS Storm Prediction Center has issued a ISSUED BY 902 PM CDT Fri Apr 17 2026 HEADER Watch county notification for watch 131 | National Weather Service st Louis MO # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings.

# HEADLINE -------------------- FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT # DETAILS -------------------- WHAT Flooding caused by excessive rainfall continues to be possible. WHERE Portions of Illinois, including the following areas, Adams IL, Brown IL, Calhoun IL, Greene IL, Jersey IL, Macoupin IL, Montgomery IL and Pike IL and Missouri, including the following areas, Audrain MO, Knox MO, Lewis MO, Lincoln MO, Marion MO, Monroe MO, Montgomery MO, Pike MO, Ralls MO and Shelby MO. WHEN Through late tonight. IMPACTS Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Storm drains and ditches may become clogged with debris. ADDITIONAL DETAILS - Rainfall amounts of up to 3 inches may fall in this area and cause localized flooding. ISSUED AT Friday, April 17, 2026 at 1:11 PM CDT ISSUED BY National Weather Service St Louis MO HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. # AREAS AFFECTED -------------------- Calhoun IL, Adams IL, Audrain MO, Brown IL, Greene IL, Jersey IL, Knox MO, Lewis MO, Lincoln MO, Macoupin IL, Marion MO, Monroe MO, Montgomery IL, Montgomery MO, Pike IL, Pike MO, Ralls MO, Shelby MO Including the cities of Quincy, Mexico, Litchfield, Pittsfield, Mount Sterling, Bowling Green, and Hannibal

Closest strike: 8.64 miles Stay Alert! Remain in a safe area until there has been no lightning within 10 miles of this location for 30 minutes. Please be aware that lightning activity can remain high even when a storm is moving away from your location. Even if rain has stopped, do not leave your safe area until WeatherBug indicates that lightning is more than 10 miles away from this selected location. IF OUTDOORS Avoid water, high ground, and open spaces. Avoid all metal objects including electric wires, fences, and machinery. Find a safe area in a building or in a fully enclosed vehicle with the windows completely shut. Unsafe places include underneath canopies, small picnic or rain shelters, convertibles, or near trees. IF INDOORS Avoid water and stay away from doors and windows. Avoid using a hard line telephone. Take off headphones. Turn off, unplug, and stay away from appliances, computers, power tools, and TV sets. Lightning may strike exterior electric and phone lines, inducing shocks to inside equipment.

There is a Enhanced 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 OVER MUCH OF ILLINOIS INTO NORTHEAST MISSOURI...AND OVER NORTHERN OKLAHOMA SUMMARY Damaging storms producing wind, hail and isolated tornadoes remain possible this evening from Illinois into Oklahoma. WI/MI into IL and MO Supercells have largely merged into a broken line of assorted bows from far southeast WI across much of northern into western IL and trailing into northeast MO. The 00Z ILX sounding shows steep lapse rates aloft and large deep-layer shear, as well as veering winds with height. Low-level SRH will remain favorable for rotation to develop at least briefly anywhere within the line, with damaging winds the most likely threat. Storms have recently become better organized over central MO, and this activity may affect the St. Louis area later tonight. For lower MI into northern IN, the organized line of storms to the west along with a 60 kt low-level jet suggest at least isolated severe gusts may occur overnight despite lesser instability. For more information about Illinois, see mesoscale discussion 484. OK...Southeast KS...southwest MO...northwest AR Scattered severe cells persist near and north of the cold front across much of northern OK and extending into southeast KS. Although the undercutting cold air will likely mitigate wind potential, steep lapse rates aloft along with ample deep-layer shear will continue to favor hail. Storm coverage may be more isolated into southwest OK later tonight, but the environment remains quite favorable for large hail. One corridor for possible damaging wind or even a tornado is over northeast OK into southwest MO. Here, the front is not surging as fast, and storms over Osage county are already oriented more favorably N-S relative to the deep-layer shear. A southwest low-level jet near 50 kt will further support low-level rotation.

Pollen Index: 10.9 Pollen Level: high Predominant Pollen: Poplar/Aspen/Cottonwood, Cedar/Juniper and Elm. Concentration of pollen grains in the air for Saturday will be falling in the moderate range. This change results in part from falling temperatures and heavy rains in the morning and evening which tend to wash pollen out of the air. That's good news for allergy sufferers.