NWS-confirmed thunderstorm wind damage across southern Illinois, Sep 20

On the evening of September 20, 2026, a line of severe thunderstorms swept northeast through the Ozarks-to-Ohio Valley corridor, producing confirmed wind damage across communities in southern and central Illinois. National Weather Service offices in Lincoln, Illinois (WFO ILX) and St. Louis, Missouri (WFO LSX) issued Local Storm Reports documenting damage in Jasper County and Montgomery County — including a shed roof torn from its foundation, downed trees, wind-blown field debris, and outage-causing tree limbs brought down on homes and power lines.

The storms moved quickly, but their effects were far from minor for property owners in Newton, Woodbury, Montrose, and Witt. If your home or business sits in or near any of these communities, a prompt post-storm inspection is the right next step. What looks minor on the surface can conceal damage that compounds with the next rain.

What the National Weather Service Confirmed

NWS Lincoln, IL (WFO ILX) issued multiple Local Storm Reports for southern Illinois on September 20, 2026, associated with the storm system tracking northeast through the region. NWS St. Louis, MO (WFO LSX) confirmed additional reports from Montgomery County. Here is what the official record shows:

• 2 S Woodbury, Jasper County — Shed roof ripped off, trees downed: NWS ILX confirmed via broadcast media that a shed roof was ripped off and trees were downed near the Woodbury and Montrose area of Jasper County. NWS characterized the structural damage as consistent with damaging thunderstorm winds under official NWS criteria.
• 2 N Newton, Jasper County — Wind-blown debris: A second NWS ILX Local Storm Report confirmed wind-blown debris in a field north of Newton, Jasper County’s county seat.
• Witt, Montgomery County — Power outages, tree limbs on structures: NWS St. Louis confirmed power outages and tree limbs downed on homes and power lines in Witt, in Montgomery County.

No official wind speed measurements were recorded at any of the damage locations. However, the removal of a shed roof at the Woodbury site meets NWS criteria for damaging thunderstorm winds. The storm system’s track through the Ozarks-to-Ohio Valley corridor is consistent with organized convective activity capable of generating widespread structural and tree damage across a broad area.

Residents can access current Local Storm Reports and storm event data directly from the National Weather Service at weather.gov.

What Homeowners in Newton, Woodbury, Montrose, and Witt Should Check Now

Wind damage from thunderstorm events is often subtle at first. A few displaced shingles or a gap in the siding may not trigger an alarm until the next heavy rain turns a manageable repair into a water intrusion problem. If your property is in or near Newton, Woodbury, Montrose, Witt, or anywhere else across Jasper or Montgomery County, work through this checklist before the next storm system arrives.

Roof

• Missing, lifted, or displaced shingles — even a few missing tabs create an opening for water
• Granule loss visible in gutters or on the ground near downspouts
• Damaged ridge caps or flashing around chimneys, vents, and skylights
• Any visible sagging, structural shift, or displaced decking, especially near trees that came close to the roofline

Siding

• Cracked, dented, or displaced panels from wind-driven debris
• Separation at seams or corners where wind stress may have loosened the material
• Missing trim pieces around windows, doors, or at wall intersections

Trees and Landscaping

• Overhanging limbs that appear cracked or partially attached — these become projectiles in future storms
• Leaning trunks or visible root heaving that suggest the root system was destabilized
• Debris lodged on the roof or in gutters that can trap moisture against roofing materials

Gutters and Downspouts

• Gutters pulled away from the fascia board
• Crushed or disconnected downspout sections that redirect water toward the foundation
• Debris accumulation that will block drainage in the next heavy rain

Water Intrusion

• Check attic spaces for daylight, moisture, or displaced insulation
• Look along interior ceilings and exterior walls for water staining near roof penetrations
• Inspect around windows and doors for gaps or failed caulking that wind pressure may have stressed

If anything looks uncertain, get a licensed contractor’s eyes on it before your next significant rain. Catching damage now is always less expensive than addressing it after water has entered the structure.

If You Find Damage

Finding wind damage on your property is stressful, but the steps you take in the next 24 to 72 hours matter. Acting early — and in the right order — protects both the structure and your ability to file an insurance claim.

Document Everything Before Cleanup

Before moving any debris or making repairs, photograph and video every area of visible damage. Capture wide-angle shots showing where on the structure the damage is located, and close-up shots showing the detail. Note the date and time. This visual record is essential if you file a homeowners insurance claim, and it costs nothing to create.

Notify Your Insurance Carrier Promptly

Most homeowners policies include notification requirements. Report the damage to your carrier soon, ask what their process is for scheduling an adjuster inspection, and keep a written log of every call, email, and conversation. Delays in reporting can sometimes complicate a claim.

Bring in a Licensed Restoration Contractor

A licensed restoration contractor can conduct a thorough damage assessment, produce a detailed written estimate, and if needed, be present on-site when your insurance adjuster inspects the property to walk through documented findings. Allied Emergency Services is a licensed Illinois roofing and restoration contractor — we document what we find, provide written estimates, and perform covered repairs. We do not act as a public adjuster and do not negotiate, settle, or adjust insurance claims on your behalf; that is the role of your insurance carrier and, if you choose to hire one, a licensed public adjuster.

In situations where a structure needs immediate protection — a missing roof section, a compromised wall — licensed contractors can apply emergency temporary measures such as tarps and board-up to stop further damage while the insurance process moves forward. Prompt temporary protection can make a meaningful difference in limiting the total scope of repair.

Verify Contractor Licensing

After confirmed storm events, unlicensed contractors frequently work through affected neighborhoods. Illinois requires roofing contractors to hold a state license. Allied Emergency Services holds Illinois Roofing Contractor License #104.019029, active through December 2027. Before authorizing any work on your home, verify that the contractor you hire is properly licensed with the State of Illinois.

Allied has been serving the Greater Midwest in storm damage restoration since 2015 — more than a decade of NWS-confirmed events, insurance inspections, and completed repairs for homeowners and businesses across Illinois, Indiana, and Wisconsin. Our team understands what damaging thunderstorm winds leave behind, and we approach every inspection with that experience and with the goal of getting your property back to pre-storm condition.

This article is general information only and does not constitute legal or insurance advice. For guidance specific to your policy or claim, consult your insurance carrier or a licensed public adjuster.

Contact Allied Emergency Services — Available 24/7

If your property in Newton, Woodbury, Montrose, Witt, or the surrounding Jasper and Montgomery County area was affected by the September 20, 2026 storm system, don’t wait for the next rain to find out what damage is hiding. Allied Emergency Services is available around the clock for inspections, emergency temporary protection, and storm damage restoration across southern and central Illinois.

• Call us 24/7: (800) 792-0212
• Text ESTIMATE to (844) 907-2546

Our team is ready to inspect your property, document the damage in writing, and guide you through every step — from same-day temporary protection to full restoration. The sooner you know what you’re dealing with, the better your options.