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Storm response · September 11, 2026

September 11, 2026 Hail Storm — Converse, TX

A severe thunderstorm moved through Kirby, Converse, and China Grove the night of September 11, 2026 — a Tornado Warning, golf ball-size hail confirmed at 1.75" (with swath modeling showing up to 2.25" near I-10 and Graytown Road), and wind gusts to 60 mph. Here's exactly what's been confirmed, and what to do next.

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Jose Puente, Civil Engineer and owner of Atrium Roofing.
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2.25"
Largest hail reading — pinned swath reading at I-10 & 1604 / Graytown Road.
60 mph
Peak wind gust cited in the NWS warning text.
20
Communities named inside the warned area.
What NWS confirmed

The September 11, 2026 storm, report by report

Each line below is what the National Weather Service or a confirmed spotter actually reported. Nothing here is an estimate of damage — damage is established by looking at a specific roof, not by a radar signature.

  1. 10:04 PM CDT0.75" · Penny sizeGusts to 55 mph
    Kirby / near Converse
    Source: NWS Austin/San Antonio special weather statement — Doppler radar tracked a strong thunderstorm over Kirby, near Converse, with wind gusts of 50–55 mph.
  2. 10:12 PM CDT1.75" · Golf ball sizeGusts to 60 mph
    Kirby / near Converse
    Source: NWS Austin/San Antonio severe thunderstorm warning (in effect until 11:15 PM CDT) — storm located over Kirby, near Converse, moving southwest at about 15 mph.
  3. 10:25 PM CDT1" · Quarter sizeGusts to 60 mph
    Near China Grove
    Source: NWS Austin/San Antonio severe thunderstorm warning — storm near China Grove, 7 miles northeast of Stinson Municipal Airport, moving southwest at about 15 mph.
  4. Night of 09/11/20261.75" · Golf ball size
    Near Converse (ground report)
    Source: Confirmed spotter report dated 09/11/2026 — 1.75" golf ball hail near Converse.
Warnings beyond hail
9:48 PM CDTTornado Warning

A Tornado Warning was issued for the storm cell tracking from Terrell Hills through Converse toward Schertz, Universal City, and Randolph AFB, based on radar-indicated rotation. The warning was renewed until 10:30 PM CDT as the cell continued toward Cibolo and Zuehl. As of publication, NWS has not confirmed a tornado touchdown in this corridor — that requires a ground survey, which is separate from the warning itself.

Source: NWS Austin/San Antonio tornado warning
Until 1:15 AM CDTFlash Flood Warning

A Flash Flood Warning was issued for Central Bexar County. 1–2 inches of rain had fallen by 10:02 PM CDT, with up to 1 additional inch possible.

Source: NWS Austin/San Antonio flash flood warning
These are preliminary reports. They come from NWS warning text and spotter reports issued during and immediately after the storm, and have not yet been through NOAA's quality control for the Storm Events Database. We keep them separate from the verified multi-year hail record rather than blending the two.
Storm path

Where the reports came from

Markers are the individual reports listed above. Click one for its time, size, and source.

Loading storm reports…
Storm swath analysis

Modeled swath data, separate from the point-specific NWS and spotter reports above. Source: GAF / PSAI Storm Metrics storm swath analysis.

0.50" – 2.75"
Modeled hail range
50–90 mph
Modeled wind range
132,000
Homes in hail swath
155,000
Homes in wind swath
¾" – 2¼"
South of Randolph AFB
GAF / PSAI modeled storm swath broad view south of Randolph AFB on September 11, 2026
Broad swath view south of Randolph AFB. Source: GAF / PSAI Storm Metrics.
2.25"
I-10 & 1604 / Graytown Road
GAF / PSAI modeled storm swath zoomed to I-10, Loop 1604 and Graytown Road on September 11, 2026
Zoomed swath view at I-10 & 1604 / Graytown Road. Source: GAF / PSAI Storm Metrics.
Tornado status: Awaiting final path — NWS ground survey pending. The National Weather Service must conduct ground surveys to produce an accurate swath for destruction paths and tornado touchdown points. This swath may be updated as NWS completes that survey.
Communities named in the warning
San AntonioSchertzCiboloConverseUniversal CityLive OakKirbyAlamo HeightsWindcrestTerrell HillsOlmos ParkSt. HedwigElmendorfChina GroveSandy OaksZuehlCalaveras LakeRandolph AFBStinson Municipal AirportLackland AFB

A warning polygon is a broad area, and hail inside one is never uniform. Being listed here means an inspection is worth doing — it is not, on its own, evidence that your roof was damaged.

What to do next

The first steps that actually matter

Photograph what you can see from the ground today: dented gutters and downspouts, bent window screens, flattened AC condenser fins, and granules collected where downspouts drain. Note the date on the photos. Do not climb on the roof, and do not sign anything with someone who knocked on your door the morning after a storm.

Then get the roof documented against this storm date. Hail fractures the asphalt mat below the surface, so a roof can be functionally damaged for a year or more before a ceiling stain appears — which is precisely why the record you create now is worth more than the one you create after the leak.

On the claim side, Texas policies carry a reporting deadline, and the practical constraint is proof rather than the calendar: the longer you wait, the harder it is to tie damage to this storm instead of an earlier one. Our insurance guide covers deductibles and depreciation, and how roof insurance claims work walks the full sequence step by step. We don't restate it here — we just document the roof and tell you which path you're actually on.

Get your roof documented against the September 11, 2026 storm date.
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Frequently asked

Converse homeowner questions about this storm

The National Weather Service warning text listed San Antonio, Schertz, Cibolo, Converse, Universal City, Live Oak, Kirby, Alamo Heights, Windcrest, Terrell Hills, Olmos Park, St. Hedwig, Elmendorf, China Grove, Sandy Oaks, Zuehl, Calaveras Lake, Randolph AFB, Stinson Municipal Airport, and Lackland AFB. A warning polygon covers a broad area, and hail inside it is never uniform — one street can take golf balls while the next street over takes rain. Being inside the polygon means an inspection is worth doing; it is not by itself evidence of damage.

Yes, on most roofs in this area. UL 2218 Class 4 shingles are tested with a 2-inch steel ball; Class 3 with 1.75 inches. A standard non-impact-rated architectural shingle — what the majority of Converse-area homes have — has no impact rating at all, and functional damage from golf-ball hail on an aged mat is common. That does not mean every roof in the polygon is damaged. It means the size was sufficient, so the question has to be answered by looking at the roof.

Photograph anything you can see from the ground: dented gutters, downspouts, window screens, AC condenser fins, and any granules collected at the downspout outlets. Note the date. Do not climb on the roof, and do not sign anything with a contractor who knocked on your door the morning after a storm. Then get a documented inspection so you have a written record of the roof's condition tied to this specific storm date.

Texas policies carry a deadline for reporting a loss, and the practical problem is proof rather than the calendar — the longer you wait, the harder it is to tie damage to this storm date instead of an earlier one. Our insurance guide walks through the timeline, the deductible mechanics, and the claim sequence in detail.

Because most hail damage is not visible from the ground and often not obvious from the roof either. Hail fractures the asphalt mat beneath the surface; the shingle keeps shedding water for months or years while the fracture opens under thermal cycling. Leaks are the late symptom, not the first one. This is exactly why documentation done close to the storm date matters more than waiting to see if a ceiling stain appears.

That page covers the multi-year NOAA-verified record for Bexar and surrounding counties — events that have been through NOAA's quality control and entered the Storm Events Database. This page covers one storm from the night of September 11, 2026, built from NWS warning text and a confirmed spotter report. It is preliminary by definition; it has not yet appeared in NOAA's verified database, and we label it that way rather than blending it into the verified record.

Depends on what the roof shows. Isolated wind-lifted ridge caps or a single displaced shingle is a repair. Widespread mat bruising across multiple slopes is a replacement question, and on a roof with functional hail damage that usually runs through the insurer. We inspect first and tell you which one you have — including when the answer is that your roof is fine.

A Tornado Warning was issued for this storm cell at 9:48 PM CDT based on radar-indicated rotation, tracking from Terrell Hills through Converse toward Schertz, Universal City, and Randolph AFB, and renewed until 10:30 PM as the cell continued toward Cibolo and Zuehl. A warning is not a confirmed tornado — as of publication, the National Weather Service has not confirmed a touchdown in the Converse/Kirby/Schertz corridor. Confirming one requires a ground survey, which is still pending. We'll update this page if the NWS survey finds otherwise.

Yes — the National Weather Service issued a Flash Flood Warning for Central Bexar County that ran until 1:15 AM CDT. Between 1 and 2 inches of rain had fallen by 10:02 PM, with up to another inch possible. Beyond hail, it's worth checking the attic and ceilings for water intrusion over the next few days — heavy driven rain finds openings that ordinary rain doesn't.
Related

Where to go from here

Converse roofing guideVerified San Antonio hail dataHail damage & documentationWhat a free inspection covers
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