TL;DR

A waterspout tornado briefly touched down at Moredock Lake near Valmeyer, Illinois Friday evening, causing no damage. The event was part of a widespread severe weather day that produced 174 damaging wind reports across 13 states, with the heaviest impacts concentrated in South Carolina.

What Happened Friday

Friday, July 11, 2026, brought a single confirmed tornado and a barrage of damaging winds across the eastern United States. The National Weather Service office in St. Louis (LSX) confirmed that video footage captured a waterspout—possibly a landspout-type tornado—briefly touching down at Moredock Lake, approximately two miles north of Valmeyer, Illinois, at 2145 UTC (4:45 PM CDT). The tornado caused no damage.

The event occurred in Monroe County, Illinois, along the Mississippi River bluffs south of St. Louis. Waterspouts that make landfall or form over inland lakes in weak shear environments are often classified as landspouts when they develop along boundaries without a mesocyclone. This particular tornado fit that profile: brief, weak, and non-damaging.

While the Illinois tornado made headlines locally, the day's most significant severe weather story unfolded farther east.

A Wind Event Across the Southeast and Mid-Atlantic

Friday's severe weather was overwhelmingly a wind event. The Storm Prediction Center logged 174 wind reports spanning Alabama, Arizona, Arkansas, Florida, Georgia, Illinois, Kentucky, New Jersey, North Carolina, Oklahoma, Pennsylvania, South Carolina, and Tennessee.

South Carolina bore the brunt of the wind damage, with dozens of reports concentrated in the Upstate, Midlands, and Lowcountry. Trees fell across roadways, onto homes, and into power lines throughout the afternoon and early evening. Emergency managers, county dispatch centers, and the South Carolina Highway Patrol relayed a steady stream of reports between 1546 UTC and 1900 UTC (11:46 AM to 3:00 PM EDT).

Notable South Carolina reports included:

  • Gray Court (Laurens County): Scattered trees down at 1705 UTC, with Duke Energy reporting power outages.
  • Woodruff (Spartanburg County): Trees down, including one blocking Pool Street.
  • Columbia Metro area: Multiple trees down on Platt Springs Road, Overland Drive, and Mellowood Drive, with one tree igniting an active fire after falling on power lines.
  • South Congaree: Tree blocking Ramblin Road and Main Street.

Hail and Other Hazards

Hail was a minor component of Friday's severe weather. Only two hail reports were logged:

  • Milan, Tennessee: Quarter-size hail (1.00 inch) reported via mPING at 1950 UTC.
  • Broken Arrow, Oklahoma: Half-dollar-size hail (1.25 inches) at 2320 UTC.

Both reports were well below severe hail thresholds that typically produce property damage, though the Broken Arrow hail was large enough to dent vehicles.

The Atmospheric Setup

The Storm Prediction Center's Day 1 outlook valid for Friday highlighted multiple regions for severe weather, including the Carolinas, Southeast, southern Plains, and parts of the Upper Midwest. The outlook discussion noted that "multiple rounds of thunderstorms over the past couple of days have convectively overturned the moist airmass across the Carolinas," limiting instability but still allowing for scattered damaging wind potential as storms developed along the Appalachian terrain and spread eastward.

Deep-layer wind shear remained modest across much of the Southeast, which limited the potential for organized supercells or tornadoes. Instead, the environment favored pulse-type thunderstorms and clusters capable of producing localized microbursts and straight-line wind damage—exactly what materialized.

The SPC noted that "scattered thunderstorms to once again develop this afternoon over the higher terrain of the Appalachians and vicinity as a weak mid-level trough/shear zone spreads slowly eastward from the TN Valley to the Carolinas by this evening." This forecast verified, with the highest concentration of wind reports occurring along and east of the Appalachian foothills.

Context: A Typical Summer Severe Wind Day

Friday's event was not unusual for mid-July. Summer severe weather in the eastern United States is typically driven by diurnal heating, weak boundaries, and modest instability rather than the strong jet stream dynamics that fuel spring tornado outbreaks. Damaging winds—often from microbursts or bow echoes—become the primary hazard.

The single tornado report in Illinois fits a common pattern for summer tornadoes outside the Plains: brief, weak, and often occurring in low-shear environments along lake breezes, outflow boundaries, or other mesoscale features. Landspouts and waterspouts are frequent in these setups, particularly near the Great Lakes and along the Gulf Coast.

What made Friday notable was the sheer geographic spread of wind reports—174 across 13 states. The concentration of damage in South Carolina was particularly significant, with widespread tree falls and power outages affecting multiple counties.

Lessons for Severe Weather Awareness

Friday's event underscores several key points for severe weather preparedness:

  1. Summer severe weather is real. Tornado counts drop in July compared to May, but damaging winds remain a frequent and dangerous hazard. Trees in full leaf are more susceptible to wind damage, and power outages can be widespread.
  1. Microbursts can be as destructive as tornadoes. Straight-line winds from severe thunderstorms can exceed 100 mph in extreme cases, though Friday's event was likely in the 60-70 mph range.
  1. Warnings matter, even for non-tornadic storms. Severe thunderstorm warnings are issued for damaging winds, large hail, and tornadoes. A severe thunderstorm warning for 60 mph winds is not a "lesser" warning—it's a signal to get indoors and away from windows.
  1. Nighttime and early-morning severe weather is especially dangerous. While Friday's storms occurred during daylight hours, many of the wind reports came during the late afternoon and early evening when people were commuting or outdoors. Third-party weather apps are silenced by Do Not Disturb, though Wireless Emergency Alerts for tornado warnings still break through on most phones. For flash flood warnings and severe thunderstorm warnings, however, many users miss alerts overnight. VORTEX Pro addresses this gap by placing phone calls for tornado and flash flood warnings, which can ring through Do Not Disturb once Emergency Bypass is enabled for the number.

Looking Ahead

As of Sunday morning, July 12, the Storm Prediction Center has issued a Slight Risk for portions of the Carolinas, Southeast, Upper Peninsula of Michigan, and southern Arizona. Scattered severe winds remain the primary threat, with large hail possible in the Upper Midwest where stronger wind shear is forecast.

No tornado watches are currently active, and severe weather is expected to remain relatively isolated through the weekend.

VORTEX is a free web app at vortexintel.app that monitors severe weather nationwide. Pro ($4.99/month) places phone calls to your phone when a tornado or flash flood warning is issued for a location you care about — calls can ring through Do Not Disturb once you enable Emergency Bypass for the number, unlike most third-party app notifications.