Hail Swath Map Preview
The Saint Louis, MO hail swath map preview was last reviewed on August 27, 2026 and shows mapped hail estimates up to 1.25". There are 0 public hail reports, 35 public wind reports, and 0 nearby tornado reports listed for the August 12, 2021 event.
View the August 12, 2021 Saint Louis, MO hail event on the free interactive hail map, then check a free Hail Report by ZIP to see a more local hail signal for your area.
Impact Area and Population for the Saint Louis, MO Hail Map
The August 12, 2021 hail swath map for Saint Louis, MO covers approximately 1,631 square miles and includes an estimated 426,872 people inside the mapped footprint. The largest mapped area is in the 0.50-0.75" hail band, covering 680 square miles. The highest estimated population exposure is in the 0.50-0.75" hail band with 217,505 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 651 sq mi | 158,381 |
| 0.50-0.75" | 680 sq mi | 217,505 |
| 0.75-1.00" | 214 sq mi | 48,570 |
| 1.00-1.25" | 66 sq mi | 1,949 |
| 1.25-1.50" | 21 sq mi | 467 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the August 12, 2021 Saint Louis, MO hail event may have reached your area.
Housing Exposure Inside the Saint Louis, MO Hail Swath Map
Inside the August 12, 2021 hail swath map area for Saint Louis, MO, HailGeeks estimates 195,811 single-family homes, 12,405 townhomes, and 55,399 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the 0.50-0.75" hail band, with 96,894 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 77,711 | 4,015 | 24,753 |
| 0.50-0.75" | 96,894 | 7,041 | 25,811 |
| 0.75-1.00" | 20,136 | 1,347 | 4,805 |
| 1.00-1.25" | 878 | 2 | 26 |
| 1.25-1.50" | 192 | 0 | 4 |
Use this table to review housing exposure by hail band for the August 12, 2021 Saint Louis, MO hail map. To check a specific property more closely, use a free Hail Report by Address.
Counties Inside the Saint Louis, MO Hail Map
Hail from the August 12, 2021 storm was mapped across 25 counties in the Saint Louis, MO region. Madison County, IL had the strongest mapped signal, peaking at 1.25" with roughly 17,663 single-family homes inside the swath.
County pages group every mapped hail event in the area. For a closer look, drop to the city or ZIP level below, or run a free Hail Report by Address.
Cities Inside the Saint Louis, MO Hail Map
Zooming in, the swath touched 72 cities near Saint Louis, MO. Hamel, IL had the strongest mapped signal at 1.00", with an estimated 107 single-family homes exposed.
City cards show where the August 12, 2021 Saint Louis, MO hail activity was mapped, but your ZIP can show a closer local signal. Get a free Hail Report by ZIP, and if the signal looks meaningful, ask a local pro about a Remote Hail Inspection to see whether an on-site roof or exterior review may be worth scheduling.
ZIP Codes Inside the Saint Louis, MO Hail Swath Map
At the ZIP level, the August 12, 2021 Saint Louis, MO hail map spans 102 ZIP codes. ZIP 62025 shows the strongest local signal, with mapped hail estimates up to 1.25" and an estimated single-family-home exposure of 2,208.
Check your ZIP in seconds to see whether hail activity from the August 12, 2021 Saint Louis, MO event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the August 12, 2021 hail map for Saint Louis, MO currently list 0 public hail reports, 35 public wind reports, and 0 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
| No public hail reports are available for this event. | ||||
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
August 12, 2021 3:30 PM CT | Nokomis | IL | SEVERAL TREES DAMAGED. | |
August 12, 2021 4:45 PM CT | Troy | MO | 6 TO 8 IN DIAMETER LIMB BROKEN OFF OF TREE. | |
August 12, 2021 5:48 PM CT | Troy | MO | NUMEROUS TREES... TREE LIMBS AND POWER LINES BLOWN DOWN ACROSS THE NORTHERN HALF OF THE COUNTY. A LARGE TREE BRANCH WAS BLOWN ONTO A HOUSE. ALSO... A TRAMPOLINE WAS BLOWN INTO THE SIDE OF A HOUSE BREAKING A WINDOW. | |
August 12, 2021 5:48 PM CT | 3 NNE Moscow Mills | MO | AT LEAST THREE POWER POLES SNAPPED ALONG HWY 47. | |
August 12, 2021 5:58 PM CT | 1 WSW Truesdale | MO | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 W NEW MELLE... LOCATION CORRECTED TO WARRENTON. PORTION OF FLAT ROOF PEELED OFF OF ELEMENTARY SCHOOL... TIME ESTIMATED FROM RADAR. | |
August 12, 2021 6:01 PM CT | Foley | MO | TREE DOWN. | |
August 12, 2021 6:01 PM CT | Winfield | MO | 3-5 INCH TREE LIMB DOWN. | |
August 12, 2021 6:02 PM CT | 2 ENE Foristell | MO | LARGE TREE BLOWN OVER ONTO W. MEYER ROAD IN WENTZVILLE. | |
August 12, 2021 6:04 PM CT | New Melle | MO | PORTION OF FLAT ROOF PEELED OFF OF ELEMENTARY SCHOOL. | |
August 12, 2021 6:04 PM CT | 2 WNW Wentzville | MO | SEVERAL LARGE TREE BRANCHES DOWN. | |
August 12, 2021 6:14 PM CT | 2 E O'Fallon | MO | SEVERAL TREES BLOWN DOWN NEAR INTERSECTION OF MEXICO ROAD AND BELLEAU CREEK ROAD. | |
August 12, 2021 6:15 PM CT | 2 E Dardenne Prairie | MO | SEVERAL TREES BLOWN DOWN NEAR INTERSECTION OF HIGHWAYS N AND K. | |
August 12, 2021 6:21 PM CT | 3 NW Gray Summit | MO | GUST FRONT WINDS BLEW DOWN SEVERAL TREES AND POWER LINES DOWN AROUND LABADIE. | |
August 12, 2021 6:21 PM CT | 1 NNE Defiance | MO | TREE AND POWER LINE BLOWN DOWN OVER HIGHWAY DD NEAR INTERSECTION WITH HIGHWAY 94. | |
August 12, 2021 6:24 PM CT | 2 NNE Gray Summit | MO | 3 TO 4 INCH DIAMETER TREE LIMBS DOWN. | |
August 12, 2021 6:29 PM CT | 1 ENE Eureka | MO | SHINGLES BLOWN OFF OF A FEW HOUSES. | |
August 12, 2021 6:34 PM CT | Florissant | MO | LARGE LIMBS DOWN ON HOUSE. | |
August 12, 2021 6:37 PM CT | Kirkwood | MO | SEVERAL TREES AND NUMEROUS TREE LIMBS BLOWN DOWN NEAR THE INTERSECTION OF MANCHESTER ROAD AND GEYER ROAD. | |
August 12, 2021 6:37 PM CT | 1 N Kirkwood | MO | SEVERAL TREES AND NUMEROUS TREE LIMBS WERE BLOWN DOWN NEAR THE INTERSECTION OF MANCHESTER ROAD AND GEYER ROAD. | |
August 12, 2021 6:41 PM CT | Murphy | MO | POWER LINES DOWN AND MULTIPLE TREES SNAPPED. | |
August 12, 2021 6:41 PM CT | Brentwood | MO | LARGE TREE SNAPPED IN HALF CAUSING DAMAGE TO A HOUSE ON PINE AVENUE NEAR THE INTERSECTION WITH ST. CLAIR IN BRENTWOOD. | |
August 12, 2021 6:41 PM CT | 1 SSE Webster Groves | MO | TREE DOWN BLOCKING WATSON ROAD. | |
August 12, 2021 6:42 PM CT | 1 NW Shrewsbury | MO | LARGE TREE LIMB BLOWN DOWN. | |
August 12, 2021 6:44 PM CT | 1 NE Maplewood | MO | SEVERAL TREES DOWN ACROSS MCCAUSLAND AVE. | |
August 12, 2021 6:51 PM CT | Oakville | MO | NUMEROUS TREE LIMBS BLOWN DOWN. | |
August 12, 2021 6:54 PM CT | Granite City | IL | LARGE TREE BLOWN OVER ONTO ILLINOIS ROUTE 3. | |
August 12, 2021 6:54 PM CT | Normandy | MO | LIMBS DOWN. | |
August 12, 2021 6:55 PM CT | Barnhart | MO | NUMEROUS TREE LIMBS BLOWN DOWN. VIA FACEBOOK. | |
August 12, 2021 6:58 PM CT | 3 N Lemay | MO | 1 TO 3 INCH LIMBS DOWN. | |
August 12, 2021 8:25 PM CT | Tamaroa | IL | TREES REPORTED DOWN. | |
August 12, 2021 6:05 PM CT | 64 mph | 2 WSW Wentzville | MO | MODOT OBSERVATION SITE ON INTERSTATE 70. |
August 12, 2021 6:39 PM CT | 58 mph | 1 WNW Berkeley | MO | CORRECTS PREVIOUS TSTM WND GST REPORT FROM 1 WNW BERKELEY. WIND GUST REPORTED AT ST. LOUIS-LAMBERT INTERNATIONAL AIRPORT. |
August 12, 2021 6:55 PM CT | 58 mph | 1 SSW Hazelwood | MO | No National Weather Service description provided. |
August 12, 2021 7:01 PM CT | 67 mph | 1 ESE Sauget | IL | No National Weather Service description provided. |
August 12, 2021 8:10 PM CT | 63 mph | Pinckneyville | IL | 63 MPH WIND GUST REPORTED BY A VIEWERS WEATHER STATION. |
| Date & Time | Rating | City | State | Description |
|---|---|---|---|---|
| No public tornado reports are available for this event. | ||||
This table includes only public storm reports connected to the August 12, 2021 Saint Louis, MO storm event. When available, each report may include the time, size or magnitude, city, state, and a short description.
Related Hail Maps in the Saint Louis, MO Region
We found 6 more hail maps with reports from the same Saint Louis, MO region as the August 12, 2021 event. These related maps cover storm dates from Jun 28, 2021 through Aug 10, 2021, with mapped hail estimates ranging from 0.75" to 3.25". In this set, the strongest related map reached 3.25", and the most recent map shown is from Aug 10, 2021.
If none of these related Saint Louis, MO hail maps look close enough to your property, check a free Hail Report by Address. It reviews hail history for a specific location — not just the broader Saint Louis, MO region — so you can check whether hail activity may have reached your property.
Local Hail Review Options Near Saint Louis, MO
Not sure whether the August 12, 2021 Saint Louis, MO hail map matters for your property? Start with a free Hail Report by Address to see whether hail activity was mapped for that property. If the property signal looks meaningful, you can choose a local pro serving the Saint Louis, MO region and ask about a Remote Hail Inspection before deciding whether an on-site roof or exterior review is worth scheduling.
Check a specific property to see whether hail activity from the August 12, 2021 Saint Louis, MO event — or another recent hail event — may have been mapped at that address.
Find a roof or exterior pro serving the Saint Louis, MO region who can help you understand what the property hail signal may mean.
A participating local pro reviews property-level hail history remotely — not just the August 12, 2021 event — to help decide whether an on-site inspection may be worth scheduling.
A free Hail Report by Address and a Remote Hail Inspection can help you look beyond the August 12, 2021 hail map visuals alone. They do not confirm property damage and do not replace an on-site inspection for a property in the Saint Louis, MO region, but they can help you make a more informed next decision before anyone climbs on the roof.
Frequently Asked Questions
Common questions about the August 12, 2021 Saint Louis, MO hail event.