Quarter-size hail confirmed near Savanna, Carroll County, IL — Aug 21

Quarter-size hail struck the Savanna area of Carroll County, Illinois late Thursday evening, with the National Weather Service confirming a report of 1.00-inch hailstones near the community just before midnight. The event unfolded as storm cells continued pushing through far northwest Illinois on August 21, 2026, affecting communities along the Illinois River corridor — including Savanna and Thomson.

While the storm has passed, the hours and days that follow a hail event are when property damage becomes apparent — and when acting promptly can prevent minor impact marks from becoming serious water intrusion problems. Allied Emergency Services has worked with storm-affected homeowners across Illinois for 27 years. This article covers what Carroll County residents should inspect, how to document what they find, and what to do if damage turns up.

What the National Weather Service Confirmed

At 11:49 PM CDT on Thursday, August 21, 2026, the National Weather Service office in Quad Cities (DVN) logged a confirmed hail report of 1.00 inches in diameter — approximately the size of a quarter — at a location approximately 1 mile west-northwest of Savanna, Carroll County, Illinois (42.09°N, 90.16°W). The report was sourced from broadcast media, and the event time was estimated using radar analysis.

The hail was recorded as storms continued moving through the Illinois River corridor in far northwest Illinois. The event was documented in the NWS Storm Prediction Center’s Local Storm Reports under the jurisdiction of NWS Quad Cities, which covers this portion of the state.

Quarter-size hail — at exactly one inch — sits at a threshold that structural engineers and insurance adjusters take seriously. Hailstones of that diameter carry enough kinetic energy to bruise and crack asphalt shingle mats, dent unprotected metal components, crack or chip siding panels, and damage soft-metal features like gutters, downspouts, and vent caps. The actual impact at any given address depends on the storm’s path, the density of the hail core, and local wind angles at the time of impact.

A single ground-truth report does not guarantee uniform hail coverage across every property in the area. Hail swaths can be narrow or uneven. Your home may or may not have been in the direct path — which is precisely why a careful post-storm inspection matters for every property in and around Savanna and Thomson.

What Homeowners in Savanna and Thomson Should Check Now

If you live in Savanna, Thomson, or the surrounding Carroll County communities that were in the path of last night’s storm, a methodical visual inspection of your property is the right first step. You do not need to get on the roof — and in most cases, you should not attempt it without proper safety equipment and experience. Start from the ground and work your way around the structure.

Roof and Shingles

• From the ground with binoculars: Look for missing shingles, dark circular bruise marks on asphalt shingle fields, or any areas where the surface texture looks disturbed or uneven.
• Granule loss: Check the base of your downspouts for accumulation of gritty, sand-like granules. Granule loss is one of the clearest indicators that shingles absorbed hail impact — the granule surface is the shingle’s UV and weather protection layer.
• Roof vents, flashing, and pipe boots: Metal components often show the clearest impact marks. Even small dents on ridge vents or flashing confirm a hail event reached the roof plane.
• Skylights: Inspect for cracked, chipped, or starred acrylic or glass panels.

Siding

• Walk the full perimeter of your home. Look for circular crack patterns, splits, or chips — particularly common on vinyl siding after hail exposure.
• Inspect window trim, shutters, and door surrounds for cracks or breaks.
• Check aluminum and steel exterior components: fascia boards, soffits, and garage doors frequently show visible dents from quarter-size hail and can be assessed from the ground level.

Gutters and Downspouts

• Gutters and downspouts are soft-metal surfaces that dent readily and serve as a reliable field indicator of hail size and intensity.
• Look for circular impact dents along the top edges of gutters and along gutter run lengths.
• Clogged or dented downspouts can affect drainage during the next rain event — worth addressing promptly.

Windows and Screens

• Inspect window glass and frames for chips, cracks, or failed seals (fogging between panes on double-pane windows can appear in the days following impact).
• Window screens and storm windows often absorb direct hits; torn or deformed screens are a useful indicator of hail passage over that side of the house.

Trees and Landscaping

• Broken branches, bark scoring, stripped leaves, and shredded garden plants are natural indicators that the hail event was energetic over your property.
• Remove any storm debris leaning against the structure carefully — wind-shifted wood or hanging branches can cause secondary damage after the fact.

Water Intrusion

• Check your attic space (safely, from the access hatch — do not walk unsupported attic joists) for daylight penetration, wet insulation, or damp roof sheathing boards.
• Inspect interior ceilings near exterior walls for water staining, soft spots, or bubbling paint that may have appeared overnight.
• Check around window frames, door frames, and any roof penetrations (chimney, vent pipes) for signs of water seepage.

Hail damage to roofing systems can be progressive. A bruised or cracked shingle mat may hold through a few dry days before water works its way in during the next rain — sometimes weeks later. If your inspection raises concerns, prompt professional evaluation is far less costly than a delayed water damage repair.

If You Find Damage

Finding post-storm damage is manageable when you approach it step by step. Here is a clear path forward.

Document Before You Do Anything Else

• Photograph all visible damage before any repairs or cleanup. Date-stamped smartphone photos create a timestamped record that insurance adjusters use and accept.
• Write down where you found each item, what it looks like, and when you discovered it. Simple notes go a long way.
• If you take any immediate protective measures — such as placing a tarp over a compromised roof area — save any receipts. Emergency mitigation costs are typically included in covered claims.

Notify Your Insurance Carrier Promptly

• Most homeowners insurance policies require timely reporting of storm damage. Delays can create coverage complications.
• Ask your carrier what documentation they need, what your deductible is, and how to reach the claims adjuster assigned to your file.
• You have the right to have a licensed contractor present during the adjuster’s site inspection — that presence ensures all physical damage gets seen and properly noted.

Work with a Licensed Restoration Contractor

As an Illinois Licensed Roofing Contractor (#104.019029) and IICRC Certified Restoration Firm, Allied Emergency Services can conduct a thorough professional inspection, provide a detailed written estimate of documented damage, be present on-site during the insurance adjuster’s inspection, and perform all covered repairs to manufacturer and code standards.

It is important to be clear: Allied Emergency Services is a licensed restoration contractor — we do not negotiate, settle, or adjust insurance claims on your behalf. That role belongs to your insurance company and, if you choose to engage one, a licensed public adjuster. Our role is to document the physical condition of your property accurately and repair it correctly. Learn more about our storm damage restoration services.

A Word About Storm-Chaser Contractors

• Following significant hail events, door-to-door contractors sometimes appear quickly in affected neighborhoods. Before signing any agreement, verify the contractor’s Illinois license at the Illinois Department of Financial and Professional Regulation.
• Never pay the full project cost upfront. A reputable contractor will work with your insurance carrier’s payment timeline.
• Allied Emergency Services has been operating in Illinois for 27 years. We stand behind our work long after the storm season ends.

If you have questions or want a professional inspection after last night’s hail event in Carroll County, our storm damage restoration team is available around the clock.

This article is general information only and does not constitute legal or insurance advice. Consult your insurance carrier and licensed professionals regarding your specific situation.

Reach Allied Emergency Services — 24/7

Allied Emergency Services responds to storm damage day and night across Illinois and the greater Midwest. If last night’s storms left you with questions about your home, don’t wait for the next rain to find out what the hail left behind.

• Call: (800) 792-0212 — 24 hours a day, 7 days a week
• Text: Text ESTIMATE to (844) 907-2546 to request a free damage assessment

A prompt inspection is the fastest way to know where you stand — and to get ahead of any damage before it becomes something more serious.