The BIGGEST Storm In Decades Is Coming This Week...

Added: 2026-05-20

[00:00:00]Two hours ago, CNN published a headline that confirmed something I have been building toward in this series for 3 weeks. The Storm Prediction Center has issued a rare level four of five risk for severe thunderstorms from Central Kansas to far Northwest Missouri, Southwest Iowa, and Southeast Nebraska.

[00:00:15]A threat level this high is issued on only about 14 days per year. 14 days per year out of 365. That is how rare a level four moderate risk is from the Storm Prediction Center. Roughly one in every 26 days. And today, Monday, May 18th, 2026, the red designation has been issued for Central Kansas through Northwest Missouri, Southwest Iowa, and Southeast Nebraska. Right now, this afternoon. And the SPC's day one convective outlook, published at 12:55 a.m. CDT this morning, describes what that moderate risk means in the specific terms that should stop every viewer in that corridor cold. A regional outbreak of severe storms, potentially including strong and intense tornadoes of EF2 to EF3 or stronger, is expected across the Central Plains during the late afternoon and evening. Although some uncertainties persist regarding the upper end magnitude and spatial details of the heightened tornado potential.

[00:01:04]Supercells capable of very large hail and strong to intense tornadoes are most likely from Central Kansas and Southeast Nebraska into Iowa and Northwest Missouri. A regional outbreak, including EF2 to EF3 or stronger tornadoes, described as expected, not possible, not likely, expected. This is the moment the entire 2026 season has been building toward. This is the biggest severe weather day since the March EF5 in Indiana. This is Monday, May 18th, 2026, and what follows it, the rest of the week, maybe even bigger.

[00:01:34]Let me be specific about why today's level four moderate risk is one of the most significant single forecast products issued by the SPC in 2026. A threat level this high is issued on only about 14 days per year. Supercells that erupt in this area between 1:00 p.m. to 5:00 p.m. CT will likely spin up tornadoes, some of them potentially EF2 to EF3 or stronger, and produce very large hail. 14 days per year.

[00:01:57]I have been noting throughout this series that the 2026 season, the most active in recent memory by multiple metrics, had not yet produced a moderate risk designation during the May 16th through 18th weekend events, despite 30% probabilities on both days. The SPC held at 30% slight risk equivalent levels even during the most extreme setup of the season so far.

[00:02:18]Today's moderate risk changes that. The SPC has now crossed the threshold they reserve for events where they have high confidence in widespread organized severe weather including strong to violent tornadoes. This is the same risk level that preceded some of the most destructive tornado outbreaks in American history. The April 2nd, 2025 event that produced 100 tornadoes and two EF3s in Missouri and Arkansas on a single day. The April 27th, 2026 Missouri event that produced the PDS tornado watch and the Stone County midnight PDS warning.

[00:02:49]The April 14th, 2026 event that produced 50 tornadoes including five Michigan overnight tornadoes and the Waukesha, Wisconsin lightning fatality. Numerous severe thunderstorms are expected this afternoon and evening across the South Central Plains and Middle Missouri Valley.

[00:03:03]Supercells capable of very large hail and strong to intense tornadoes are most likely from Central Kansas and Southeast Nebraska into Iowa and Northwest Missouri. An extensive MCS exists early in the overnight from Eastern and Central Iowa southwestward into Northeast and Central Kansas where regenerative and repetitive storms persist. This MCS should weaken and lose integrity through the early morning.

[00:03:25]Although convection may regenerate and intensify again along composite outflow eastward across the Middle Mississippi Valley and Lower Ohio Valley and potentially parts of the Great Lakes within a destabilizing air mass this afternoon.

[00:03:37]The MCS, the mesoscale convective system, already existing in the overnight from Iowa into Kansas, regenerating and intensifying, pushing east across the Middle Mississippi Valley, Ohio Valley, and Great Lakes this afternoon. This is not a single storm event developing from scratch this afternoon.

[00:03:53]It is a storm system that has been running for hours and is now reorganizing into its most dangerous afternoon configuration. The storms that fire this afternoon will have the benefit of pre-existing boundaries from this morning's MCS. Outflow boundaries, moisture pooling, wind shift lines that dramatically enhance the tornado production potential of new supercells.

[00:04:11]While the tornado outbreak unfolds east of the dry line, something equally alarming is happening west of it. And CNN confirmed it in the same article.

[00:04:19]The same system bringing dangerous tornadoes to the central plains and Midwest is the culprit for a level three of three extremely critical fire threat in the southern high plains Monday.

[00:04:28]These are the areas most at risk of rapidly spreading wildfires on Monday.

[00:04:31]Sustained winds of 25 to 30 mph, gusts up to 50 mph, and relative humidity under 10% will combine with dry vegetation to cause any fires that ignite to spread at a life-threatening pace, according to the National Weather Service.

[00:04:45]Similarly dangerous conditions on Sunday sparked several fires that grew rapidly.

[00:04:49]Level three of three, the highest fire weather category issued by the SPC.

[00:04:54]Extremely critical.

[00:04:55]Sustained winds of 25 to 30 mph with gusts to 50 mph. Relative humidity under 10% On Sunday, conditions this severe already sparked several fires that grew rapidly. And today those same conditions persist across the southern high plains, New Mexico, West Texas, Southwest Kansas, while the moderate risk tornado outbreak unfolds to the east. The dry line is literally the boundary between two simultaneous catastrophes. East, EF2 to EF3 tornadoes, very large hail, damaging winds in the moderate risk.

[00:05:25]West, rapidly spreading wildfires and under 10% humidity with 50 mph gusts.

[00:05:30]The same front, the same atmospheric boundary, two completely different life-threatening emergencies in adjacent states. The highest hail risk is expected from Texas to Alabama with another hotspot around Iowa, northern Missouri, eastern Nebraska, and northeastern Kansas. Flash flooding is a big concern this year. The secondary hotspot that AccuWeather identified in February, Iowa, northern Missouri, eastern Nebraska, northeastern Kansas, is today's moderate risk area. The seasonal forecast has verified with precise geographic accuracy.

[00:05:59]And the fire weather threat in West Texas and New Mexico is the western expression of the same dry line that has been producing these dual disasters since March.

[00:06:06]The SPC's explicit description of strong to intense tornadoes of EF2 to EF3 or stronger in today's day one convective is the most alarming tornado intensity forecast in any official SPC product issued this season.

[00:06:21]Let me explain what it means for the communities in the moderate risk zone.

[00:06:25]Supercells capable of very large hail and strong to intense tornadoes are most likely from central Kansas and southeast Nebraska into Iowa and northwest Missouri. Central Kansas, southeast Nebraska, Iowa, northwest Missouri. The specific cities inside or adjacent to that corridor, Salina, Wichita, Hutchinson in Kansas, Lincoln, Omaha, Kearney in Nebraska, Des Moines, Iowa City, Cedar Rapids, Davenport in Iowa.

[00:06:50]Kansas City in northwest Missouri. These are not small towns. These are major metropolitan areas with combined populations exceeding 5 million people.

[00:06:59]EF2 means 111 to 135 mph winds.

[00:07:04]Well-constructed homes lose their roofs.

[00:07:06]Exterior walls of well-constructed homes collapse. Mobile homes are demolished completely. Large trees snap or uproot.

[00:07:13]EF3 means a 136 to 165 mph winds. Entire stories of well-constructed homes are destroyed. Severe damage to large commercial buildings. Trains overturned.

[00:07:24]Cars lifted and thrown. Bark stripped from trees.

[00:07:27]Or stronger, at the EF4 and EF5 range, means structures leveled to foundations.

[00:07:32]Vehicles lofted and carried hundreds of yards. The kind of destruction that the March 2026 Wells County, Indiana EF5 delivered at $200 mph winds along a 14.6 mile track.

[00:07:45]Only 20 states have ever had an F5 or EF5 tornado. There have been roughly 60 F5 and EF5 tornadoes in US history since 1950. They represent about 0.1% of all tornadoes, but cause a disproportionate share of fatalities. The or stronger qualifier in today's SPC language is not empty. The 2026 season has already produced one EF5 and one EF4.

[00:08:09]The same ENSO transition pattern that preceded both of those events is still operating today. The atmosphere does not cap its violence because the season has already been extreme. Today's moderate risk did not arrive from nothing. It arrived from an atmosphere that has been building toward this moment since January. Let me give you the full season context that makes today's event historically significant.

[00:08:29]Storm surveys have confirmed at least 80 tornadoes as of April 22nd in what has become the biggest tornado outbreak in 2026 so far.

[00:08:37]The strongest tornadoes, two EF3s, occurred in Wisconsin. A severe weather outbreak unleashed at least 80 tornadoes in a single day last Friday, stretching from Oklahoma to Michigan, and leaving a trail of damage across the Midwest.

[00:08:50]The April 2017-18 outbreak, 80 confirmed tornadoes, the largest single-day outbreak of 2026 until this point, was the season's previous peak, two EF3s in Wisconsin. 370 buildings damaged in Lena, Illinois alone.

[00:09:05]The Rivian EV facility in Normal, Illinois damaged. The 2026 tornado season is off to a fast, violent, and heartbreaking start.

[00:09:14]Preliminary data show an above-normal pace of tornado reports through early March, with dozens of tornadoes already logged, and the official count still rising as damage surveys are completed.

[00:09:23]March, very above average, driven by three major outbreaks.

[00:09:27]April, extremely active, featuring the massive April 17-18 outbreak with 80 confirmed tornadoes, and the most recent April 22-24 outbreak, which included the Enid EF4. March above average, April extremely active, and now May, the month with the most historically active severe weather week in American records, producing a moderate risk on May 18th, the day before the May 19th-26 window officially opens. May averages 275 to 294 tornadoes nationally, more than March and April combined.

[00:09:57]The single most active week in US tornado history is May 19th-26, accounting for about 6% of all tornado reports ever recorded. More tornadoes in May than March and April combined. 6% of all recorded tornadoes in a single week.

[00:10:10]And today, May 18th, is the bridge into that window.

[00:10:13]A moderate risk day.

[00:10:15]An EF2 to EF3 or stronger tornado outbreak expected across central Kansas through Iowa. The biggest storm event of the season arriving on the eve of the most historically dangerous week of the calendar.

[00:10:26]The moderate risk today is the headline, but behind it, as I described in previous videos, the week has not finished delivering.

[00:10:34]Let me update you on what Wednesday and Thursday bring, because the SPC's day 4-8 discussion updated early Sunday morning gives a clearer picture than we had 48 hours ago. On Wednesday and Thursday, a cold front will move southeastward across the southern plains and mid-Mississippi Valley, extending east-northeastward into the mid-Atlantic.

[00:10:52]A severe threat could develop along and ahead of the front each afternoon.

[00:10:56]However, strongest upper-level flow becomes displaced to the north from the better instability, which will reside along and south of the front across the southeastern US.

[00:11:05]There will be some potential for high-based thunderstorm development within the up-slope regime across New Mexico into far western Texas on Wednesday, with potential for large hail. Overall, there is low confidence in a widespread and organized severe threat.

[00:11:18]Wednesday and Thursday, the days that were predictability too low just 2 days ago, now have specific forecast language. A cold front moving southeast across the southern plains and mid-Mississippi Valley. Severe threat developing each afternoon. The instability positioned along and south of the front across the southeastern US.

[00:11:36]And on the western side of the dry line, high based thunderstorm development in New Mexico and West Texas with large hail potential. The low confidence in a widespread and organized severe threat for Wednesday-Thursday is an important qualifier. It means the SPC sees potential. They would not write about it at all if the model showed nothing, but they lack the specific confidence that would justify elevated risk designations at this range. Wednesday and Thursday could a significant severe weather days, especially if the instability along the southeastern front is accessed by an organizing trigger. Or they could verify as more limited scattered events.

[00:12:11]Thursday through Sunday, moist southerly return flow will begin across the southern and central plains into the weekend. Thursday through Sunday, Gulf moisture return. Again, the same cycle that has driven every outbreak this spring. The cold front passes. The Gulf moisture surges northward. The atmosphere reloads. The main 18-26 window is not a single event window. It is a pattern window where multiple reload cycles are possible within the same 7-day period. I want to be direct and urgent here because today's moderate risk is an active developing event. Supercells that erupt in this area between 1:00 p.m. to 5:00 p.m. CT will likely spin up tornadoes.

[00:12:48]Some of them potentially EF2 to EF3 or stronger and produce very large hail between 1:00 p.m. and 5:00 p.m. Central Time. That window is open right now as this video uploads. If you are in Central Kansas, Southeast Nebraska, Iowa, or Northwest Missouri, the storms that the SPC says will likely spin up EF2 to EF3 or stronger tornadoes are developing or about to develop in your region right now. Your action list is immediate, not for tomorrow. Right now.

[00:13:15]First, if you are outdoors anywhere in the moderate risk zone, get inside a sturdy building immediately. Do not wait for sirens. The time from supercell initiation to tornado warning issuance is typically 20 to 30 minutes.

[00:13:28]The time from warning to tornado arrival is 13 minutes on average. You need to be inside before any of those clocks start.

[00:13:35]Second, if you are in a mobile home or manufactured structure anywhere in Iowa, Kansas, Nebraska, or Northwest Missouri, this is the moment to leave for a solid structure shelter. The same risk of death that is 15 to 20 times higher in a mobile home than a permanent structure during a significant tornado is operating right now for an event where EF3 level tornadoes are explicitly expected.

[00:13:57]Third, if tornado watches are not yet posted for your county, watch the SPC's mesoscale discussion products for indications of imminent watch issuance.

[00:14:05]Tornado watches typically follow the mesoscale discussion by 30 to 60 minutes. Fourth, charge your phone right now if it is below 80% battery.

[00:14:14]The overnight MCS that the SPC describes regenerating and pushing east across the mid Mississippi Valley and Ohio Valley means tonight is a potential overnight severe weather threat for communities east of today's moderate risk zone.

[00:14:26]Your phone needs to be charged when warnings drop at 2:00 a.m. Here is where we stand on Monday afternoon, May 18th, 2026.

[00:14:33]The Storm Prediction Center has issued a rare level four of five risk for severe thunderstorms from central Kansas to far Northwest Missouri, Southwest Iowa, and Southeast Nebraska.

[00:14:43]A threat level this high is issued on only about 14 days per year. 14 days per year. Today is one of those 14. Central Kansas through Northwest Missouri, Southwest Iowa, Southeast Nebraska.

[00:14:55]A regional outbreak of severe storms with EF2 to EF3 or stronger tornadoes expected from central Kansas and Southeast Nebraska into Iowa and Northwest Missouri. An extremely critical fire threat, level three of three, simultaneously in the Southern High Plains. Tuesday's 15% threat continuing southeast.

[00:15:14]Wednesday-Thursday's cold front bringing new severe potential across the Southern Plains and mid Mississippi Valley.

[00:15:20]Thursday-Sunday's Gulf moisture return reloading the atmosphere for the remainder of the May 19th to 26th window. The single most active week in US tornado history is May 19th to 26th, accounting for about 6% of all tornado reports ever recorded. The ENSO transition driving tornado patterns is the same La Niña to neutral setup that preceded the devastating 1974 and 2011 seasons.

[00:15:42]The most active week in American severe weather history opens tomorrow. Today is its eve and it opens with the season's first moderate risk already confirmed.

[00:15:51]A regional outbreak with EF3 or stronger tornadoes explicitly expected. This is the biggest severe weather day that 2026 has seen since the March EF5 in Indiana.

[00:16:01]And the week behind it, the predictability to low signals resolving into Wednesday Thursday cold fronts and Thursday Sunday moisture return means it may not be the biggest day of the week. Be in your shelter if you are in the moderate risk zone. Keep your alerts active tonight for the overnight MCS threat. Watch tomorrow's Tuesday continuation threat and understand that the season that AccuWeather's forecast called potentially the most active May has arrived at its peak week. The biggest storm in decades is not coming.

[00:16:28]It is here. Stay safe. I will be back with damage reports and continuing updates throughout the week.