Quarter-size hail confirmed near Machesney Park, Winnebago County, IL — Aug 21

On the evening of Thursday, August 21, 2026, isolated to scattered thunderstorms pushed through northern Illinois ahead of a southward-moving cold front, producing quarter-size hail in Winnebago County. At 8:55 PM CDT, the National Weather Service office in Chicago (NWS LOT) confirmed a hail report of 1.00 inch — dime to quarter size — just north of Machesney Park, Illinois. The confirmation came via a photo submitted to the NWS email reporting service, with event timing estimated by radar.

Machesney Park and neighboring Rockford fell within the storm’s reach across Winnebago County. Hail measuring one inch in diameter is large enough to dent asphalt shingles, crack aging siding panels, and damage gutters and downspouts on contact. Because the storm arrived late in the evening, many residents may not yet have had an opportunity to assess their property. Homeowners in both communities are encouraged to perform a careful post-storm inspection while the evidence is fresh and before additional rainfall complicates the picture.

What the National Weather Service Confirmed

According to the National Weather Service Chicago (LOT) and SPC Local Storm Reports data for August 21, 2026, the following was formally documented:

• Date and time: Thursday, August 21, 2026, at 8:55 PM CDT
• Hail size: 1.00 inch in diameter (dime to quarter size)
• Location: 1 N Machesney Park, Winnebago County, Illinois (42.37°N, 89.04°W)
• Report method: Photo submitted to the NWS email service; event time estimated by radar
• Weather pattern: Isolated to scattered thunderstorms moving through northern Illinois ahead of a southward-moving cold front
• Source: SPC Local Storm Reports (today_hail.csv), NWS Chicago (LOT)

One-inch hail sits at the lower threshold of what restoration professionals and insurance adjusters typically classify as significant hail — large enough to cause functional damage to roofing materials, particularly asphalt shingles that are several years old or more, as well as to softer metals such as aluminum gutters, downspouts, and flashing. The late-evening timing of the storm means many residents will be assessing their properties for the first time in daylight on Saturday morning.

For official storm information, future watches and warnings, and archived local storm reports, visit the National Weather Service at weather.gov.

What Homeowners in Machesney Park and Rockford Should Check Now

If you live in Machesney Park, Rockford, or the surrounding areas of Winnebago County, a methodical inspection over the next 24 to 48 hours can protect your home and support any future insurance claim. You do not need to climb onto your roof — many signs of hail damage are visible from the ground, from a ladder at the eaves, or from inside your home. Here is what to look for:

Roof

• Asphalt shingles: Look for dark spots or soft bruising, cracked tabs, or granule loss that exposes the black mat beneath. Check your downspout splash blocks — an unusual accumulation of granules after a storm is a reliable indicator of impact damage.
• Ridge cap and flashing: These areas take direct hits and are often damaged even when field shingles appear intact. Pay close attention around chimneys, pipe boots, and any skylights.
• Roof vents and exhaust caps: Soft aluminum vent covers frequently show clear hail dents even from smaller stones, making them a quick diagnostic indicator.

Siding and Exterior Surfaces

• Vinyl and aluminum siding: Look for cracks, chips, or circular impact marks — especially on panels facing the prevailing storm direction, typically west or southwest in northern Illinois.
• Wood trim and fascia boards: Inspect for splits or raw-wood exposure where paint has chipped away from impact.
• Window screens, frames, and casings: Bent or torn screens and dented aluminum frames are a quick visual indicator of hail size and storm intensity at your specific location.

Gutters and Downspouts

• Check the top edges of gutters for dents or dings — one-inch hail commonly leaves a repeating pattern of small round impressions across the full gutter run.
• Confirm downspouts remain securely fastened and that splash blocks or extensions are directing water away from the foundation.

Trees and Landscaping

• Stripped leaves, broken small branches, or bark wounds on young trees can indicate hail intensity in your specific yard — useful context if you are documenting the storm event for an insurance file.
• Check wooden decks, fences, and painted surfaces for impact gouges or fresh raw-wood exposure.

Interior — Water Intrusion

• Check attic spaces for daylight penetration, wet insulation, or fresh water staining on rafters or roof sheathing.
• Inspect ceilings near skylights, chimneys, and dormers for new water stains or soft spots in drywall.
• Even small intrusion points can expand rapidly, particularly if a follow-on storm system moves through within the next several days.

Homeowners in Machesney Park and Rockford who notice any of these signs should document them thoroughly and consider scheduling a professional inspection before contacting their insurance carrier.

If You Find Damage

Discovering hail damage on your home can feel uncertain — especially when you are not sure whether what you are seeing constitutes a covered insurance loss. Here are the recommended steps to take if your inspection turns up concerns:

1. Document Everything First

Before touching anything, photograph every impact area you can safely access from the ground, a ladder at gutter height, or through a window. Capture wide shots for context and close-ups for detail. Note the date and time of each image. If you have prior photos of your roof or siding — even screenshots from Google Street View — save those as a baseline comparison for your file.

2. Take Reasonable Steps to Prevent Further Damage

If there is an obvious penetration — a cracked skylight lens, missing shingles over an attic access — covering the area with a tarp can limit water intrusion while you wait for a professional assessment. Both your insurance carrier and FEMA’s ready.gov recommend reasonable mitigation efforts to reduce secondary damage after a storm event.

3. Notify Your Insurance Company Promptly

Contact your homeowner’s insurance carrier as soon as you have documented the damage. Most policies require timely reporting of storm events, and delays can complicate the claims process. Ask your insurer about the timeline for an adjuster visit and what temporary repair costs may be covered under your policy’s mitigation provisions.

4. Work With a Licensed Restoration Contractor

A qualified, Illinois-licensed restoration contractor can provide a detailed damage assessment and a written repair estimate before or during your adjuster’s on-site visit. Allied Emergency Services can document damage, prepare itemized estimates, and meet with your adjuster on-site to walk through identified damage points — but as a licensed restoration contractor, Allied does not negotiate, settle, or adjust insurance claims on your behalf. That distinction is important under Illinois law and protects homeowners from unlicensed actors who operate outside their legal authority.

Selecting a licensed, experienced contractor also protects you from inflated bids, substandard materials, and out-of-state crews who move on after storm season ends. Allied Emergency Services has delivered storm damage restoration across the Greater Midwest for 27 years and holds an active Illinois Roofing Contractor license (#104.019029).

5. Act Before the Claim Window Closes

Insurance policies carry deadlines for filing storm damage claims, and some policies restrict coverage if damage is not reported within a defined period after the event. The longer hail damage goes unaddressed, the greater the risk that secondary water intrusion complicates both your repairs and your claim. Saturday morning is the right time to look.

This article is provided as general information only and does not constitute legal or insurance advice. Please consult your insurance policy documents and a licensed professional for guidance specific to your situation.

Allied Emergency Services Is Ready to Help

If you are in Machesney Park, Rockford, or anywhere else in Winnebago County and want a professional assessment of your property after last night’s storm, Allied Emergency Services is available 24 hours a day, seven days a week. We are local, licensed, and ready to help you understand what the storm left behind — and what it takes to make it right.

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