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 0.75". There are 2 public hail reports, 33 public wind reports, and 6 nearby tornado reports listed for the December 10, 2021 event.
View the December 10, 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 December 10, 2021 hail swath map for Saint Louis, MO covers approximately 534 square miles and includes an estimated 243,994 people inside the mapped footprint. The largest mapped area is in the < 0.50" hail band, covering 272 square miles. The highest estimated population exposure is in the 0.50-0.75" hail band with 126,713 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 272 sq mi | 105,274 |
| 0.50-0.75" | 240 sq mi | 126,713 |
| 0.75-1.00" | 22 sq mi | 12,007 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the December 10, 2021 Saint Louis, MO hail event may have reached your area.
Housing Exposure Inside the Saint Louis, MO Hail Swath Map
Inside the December 10, 2021 hail swath map area for Saint Louis, MO, HailGeeks estimates 116,300 single-family homes, 7,335 townhomes, and 43,593 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the 0.50-0.75" hail band, with 62,560 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 48,240 | 3,435 | 20,313 |
| 0.50-0.75" | 62,560 | 3,654 | 22,230 |
| 0.75-1.00" | 5,500 | 246 | 1,050 |
Use this table to review housing exposure by hail band for the December 10, 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 December 10, 2021 storm was mapped across 13 counties in the Saint Louis, MO region. St. Louis County, MO had the strongest mapped signal, peaking at 0.75" with roughly 75,428 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 45 cities near Saint Louis, MO. St. Louis, MO had the strongest mapped signal at 0.50", with an estimated 14,768 single-family homes exposed.
City cards show where the December 10, 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 December 10, 2021 Saint Louis, MO hail map spans 47 ZIP codes. ZIP 63021 shows the strongest local signal, with mapped hail estimates up to 0.75" and an estimated single-family-home exposure of 12,591.
Check your ZIP in seconds to see whether hail activity from the December 10, 2021 Saint Louis, MO event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the December 10, 2021 hail map for Saint Louis, MO currently list 2 public hail reports, 33 public wind reports, and 6 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
December 10, 2021 7:29 PM CT |
1.00 in | 1 W Marthasville | MO | QUARTER SIZED HAIL REPORTED IN THE CITY OF MARTHASVILLE. |
December 10, 2021 8:00 PM CT |
1.00 in | 1 E Ballwin | MO | QUARTER SIZED HAIL REPORTED IN BALLWIN. |
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
December 10, 2021 7:36 PM CT | 4 NNE Stanton | MO | FRANKLIN COUNTY DISPATCH REPORTED A LARGE TREE BLOCKING THE ROADWAY ALONG ST. LOUIS INN ROAD WSW OF ST. CLAIR. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 7:38 PM CT | 1 SW Union | MO | FRANKLIN COUNTY DISPATCH REPORTED POWER LINES DOWN AT KOELLING AVENUE AND WEST SPRINGFIELD AVENUE IN SW UNION. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 7:38 PM CT | 3 N Saint Clair | MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE DOWN ON HWY 47 AT EASTVIEW DRIVE SOUTH OF UNION. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 7:40 PM CT | 1 NW Defiance | MO | BUILDING COLLAPSE AS WELL AS REPORTS OF MULTIPLE HOMES DAMAGED AND DEBRIS IN THE AREA. | |
December 10, 2021 7:40 PM CT | Winfield | MO | LINCOLN COUNTY DISPATCH REPORTED STREET LIGHTS WERE BLOWN OVER AT 2 LOCATIONS IN WINFIELD. TIME ESTIMATED USING RADAR. | |
December 10, 2021 7:40 PM CT | Winfield | MO | MULTIPLE STREET LIGHTS BLOWN OUT ACROSS THE CITY. | |
December 10, 2021 7:43 PM CT | 1 WNW Berdan | IL | GREEN COUNTY DISPATCH REPORTED A HAY WAGON WAS BLOWN ONTO HWY 67 BETWEEN WHITE HALL AND CARROLLTON. TIME ESTIMATED USING RADAR. | |
December 10, 2021 7:44 PM CT | 3 NNW Moselle | MO | FRANKLIN COUNTY DISPATCH REPORTED POWER LINES DOWN AT DENMARK ROAD AT FAIRWAY DRIVE. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 7:45 PM CT | Carrollton | IL | A COUCH WAS BLOWN ONTO HWY 67 AT CHURCH ST. IN CARROLLTON. TIME ESTIMATED USING RADAR. | |
December 10, 2021 7:47 PM CT | 2 NW Pacific | MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE DOWN ON THORNTON ROAD AT SKYLINE DRIVE. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 7:50 PM CT | 2 SSW Weldon Spring | MO | REPORT OF APPROXIMATELY 20 VEHICLES WITH DEBRIS DAMAGE ON EASTBOUND 64 EAST OF BOONE BRIDGE. | |
December 10, 2021 7:53 PM CT | 1 ESE Gray Summit | MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE OVER HOGAN ROAD IN PACIFIC. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 8:00 PM CT | 1 W Greenfield | IL | GREENE COUNTY DISPATCH REPORTED POWER LINES BLOWN DOWN AT SHEFFIELD STREET AND BROOKLEY STREET IN GREENFIELD. TIME ESTIMATED USING RADAR. | |
December 10, 2021 8:04 PM CT | 1 NW Creve Coeur | MO | LARGE TREE UPROOTED... FELL ON TO APARTMENT BUILDING. | |
December 10, 2021 8:09 PM CT | Jerseyville | IL | JERSEY COUNTY DISPATCH REPORTED A METAL SIGN AND TREE LIMB DOWN ACROSS THE ROAD AT STATE HWY 16 IN JERSEYVILLE. TIME ESTIMATED USING RADAR. | |
December 10, 2021 8:20 PM CT | 3 SSW Weldon Spring | MO | FENCE BLOWN DOWN NEAR CHESTERFIELD MALL. | |
December 10, 2021 8:29 PM CT | 2 ESE Mitchell | IL | TRACTOR-TRAILER OVERTURNED ON I-270 WB NEAR MILEPOST 7 WITH CABLES ACROSS THE ROADWAY. | |
December 10, 2021 8:33 PM CT | 1 S Bunker Hill | IL | MACOUPIN COUNTY DISPATCH REPORTED TREE DOWN ON HWY 159. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 8:40 PM CT | 4 W Staunton | IL | MACOUPIN COUNTY DISPATCH REPORTED POWER LINES DOWN ON SCHOOL HOUSE ROAD EAST OF DORCHESTER ROAD WEST OF STAUNTON. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 9:05 PM CT | 4 S Coffeen | IL | BOND COUNTY DISPATCH REPORTED A TREE DOWN ON MOUNT MORIAH AVENUE JUST WEST OF RED BALL TRAIL. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 9:06 PM CT | 1 ESE Coffeen | IL | BOND COUNTY DISPATCH REPORTED TREE ON HWY 185 JUST SOUTH OF COFFEEN. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 9:08 PM CT | 1 ESE Coffeen | IL | MONTGOMERY COUNTY DISPATCH REPORTED TREE LIMBS IMPEDING TRAFFIC ALONG ILLINOIS ROUTE 185 NEAR ROCKY FORD ROAD AND ALONG HAPPY LANE AND MERRY LANE. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 9:09 PM CT | 5 SW Union | MO | FRANKLIN COUNTY DISPATCH REPORTED TREES AND POWER LINES WERE DOWN ALONG CAMP MO-VAL ROAD WSW OF UNION. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 9:13 PM CT | 2 SSW Union | MO | FRANKLIN COUNTY DISPATCH REPORTED TREES DOWN ACROSS NORTH BEND LOOP SW OF UNION. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 9:28 PM CT | Saint Clair | MO | FRANKLIN COUNT DISPATCH REPORTED POWER LINES DOWN AT 75 SOUTH MAIN STREET IN ST. CLAIR. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 9:30 PM CT | 3 WNW Robertsville | MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE OVER THE ROADWAY AT STATE HWY O AND ROUTE MM. TIME ESTIMATED FROM RADAR. | |
December 10, 2021 10:35 PM CT | 2 NW Reno | IL | TREES AND POWERLINES DOWN. | |
December 10, 2021 10:35 PM CT | Taylor Springs | IL | REPORTS OF DENSE STYROFOAM MATERIAL SCATTERED ACROSS TAYLOR SPRINGS AS WELL AS NEIGHBORING COMMUNITIES. | |
December 10, 2021 10:38 PM CT | Fillmore | IL | REPORT OF POWERLINES DOWN. | |
December 10, 2021 10:38 PM CT | Nokomis | IL | REPORT OF A TREE DOWN. | |
December 10, 2021 11:31 PM CT | Coffeen | IL | REPORT OF TREES DOWN AND A DAMAGED MACHINE SHED. | |
December 10, 2021 7:56 PM CT | 70 mph | 4 W Chesterfield | MO | ST. LOUIS/SPIRIT...MO (SUS) ASOS REPORTS GUST OF 61.0 KNOTS FROM SW @ 0156Z KSUS 110156Z 22028G61KT 1/2SM R08R/2800VP6000FT +RA FG SQ SCT026 BKN070 OVC100 17/16 A2947 RMK AO2 PK WND 22048/0155 LTG DSNT ALQDS PRESRR P0009 T01670156. |
December 10, 2021 8:02 PM CT | 68 mph | 3 E Kampville | MO | ST. CHARLES...MO (SET) ASOS REPORTS GUST OF 59.0 KNOTS FROM W @ 0202Z KSET 110205Z AUTO 28026G59KT 3/4SM +TSRA BR BKN029 BKN070 OVC090 17/15 A2945 RMK AO2 PK WND 28059/0202 WSHFT 0151 LTG DSNT ALQDS P0025 T01720150. |
| Date & Time | Rating | City | State | Description |
|---|---|---|---|---|
December 10, 2021 7:40 PM CT | UNK | 2 W Defiance | MO | SIGNIFICANT DAMAGE TO HOME AT HIGHWAY F AND STUB ROAD. |
December 10, 2021 7:40 PM CT | UNK | 1 NW Defiance | MO | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 NW DEFIANCE. BUILDING COLLAPSE AS WELL AS REPORTS OF MULTIPLE HOMES DAMAGED AND DEBRIS IN THE AREA. |
December 10, 2021 7:45 PM CT | UNK | 1 NNE Defiance | MO | *** 1 FATAL... 2 INJ *** SIGNIFICANT STRUCTURE DAMAGE IN DEFIANCE. ONE CONFIRMED FATALITY AND 2 INJURIES. |
December 10, 2021 7:50 PM CT | UNK | 2 SSW Weldon Spring | MO | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 SSW WELDON SPRING. REPORT OF APPROXIMATELY 20 VEHICLES WITH DEBRIS DAMAGE ON EASTBOUND 64 EAST OF BOONE BRIDGE. |
December 10, 2021 8:27 PM CT | UNK | 2 S Poag | IL | EMERGENCY MANAGEMENT REPORTED A PARTIAL ROOF COLLAPSE AT AN AMAZON WAREHOUSE SOUTHWEST OF EDWARDSVILLE. MULTIPLE PEOPLE ARE TRAPPED AT THIS TIME. |
December 10, 2021 9:05 PM CT | UNK | 3 SSW Coffeen | IL | TDS EVIDENT FROM KLSX. |
This table includes only public storm reports connected to the December 10, 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 December 10, 2021 event. These related maps cover storm dates from Aug 25, 2021 through Oct 24, 2021, with mapped hail estimates ranging from 0.75" to 1.25". In this set, the strongest related map reached 1.25", and the most recent map shown is from Oct 24, 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 December 10, 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 December 10, 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 December 10, 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 December 10, 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 December 10, 2021 Saint Louis, MO hail event.