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Storm Activity›Missouri Storm Activity›Mercer County, MO
Missouri · Official NOAA Storm Data

Mercer County Hail Map & Storm Reports

Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Nov 1, 2026

Mercer County, Missouri has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 4 tornado reports among 42 severe weather events here in the last 12 months, alongside 8 hail reports with hail up to 1.75" and 30 high-wind reports with gusts up to 77 mph. The most recent recorded storm activity was on Sep 19, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.

Map of Mercer County, Missouri showing the county boundary and surrounding cities
Mercer County, Missouri. Map © Mapbox © OpenStreetMap · County boundary: US Census Bureau.

Mercer County hail map

Where hail and high-wind reports clustered across Mercer County over the last 12 months. Heat shows report density and significance, not radar.

42
Events (12 mo)
8
Hail
30
Wind
4
Tornado
1.75"
Max hail
77
Max wind (mph)
Sep 19, 2026
Most recent

What the radar showed

Radar snapshot during the Jun 10, 2026 tornado event near 3 NNE Princeton, Mercer County, Missouri, with NWS warning polygons
NEXRAD radar at the moment of the Jun 10, 2026 tornado event (Tornado) near 3 NNE Princeton. Outlined polygons are the storm-based warnings exactly as issued by the National Weather Service. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Storm exposure for an address in Mercer County

Get a free report in your folder. A city is enough if you do not have a street.

Storm log — the official record, day by day

Events older than 30 days, as recorded by the National Weather Service and Storm Prediction Center. Excerpts are quoted directly from official warnings and verified reports.

Saturday, September 19, 2026

1 SPC verified storm report · 1 NWS warning — wind gusts up to 77 mph

NEXRAD radar during the Saturday, September 19, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 1029 PM CDT, the public reported a strong thunderstorm near Trenton, moving northeast at 45 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Trenton, Spickard, Galt, Newtown, Tindall, Brimson, Harris, and Osgood.”

NWS severe weather mention · Mercer County

Wednesday, August 5, 2026

1 SPC verified storm report

“Several trees... power poles... and power lines downed near... north... and east of Mercer. Time estimated from radar. (EAX)”

SPC verified report · Mercer

Tuesday, July 21, 2026

1 NWS warning — wind gusts up to 55 mph

NEXRAD radar during the Tuesday, July 21, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 1216 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Unionville to 13 miles east of Mercer to 13 miles east of Princeton. Movement was southeast at 35 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Mercer County

Monday, July 20, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Monday, July 20, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 1152 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 8 miles southeast of Corydon to near Mercer to 6 miles northeast of Cainsville. Movement was southeast at 35 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Mercer County

Tuesday, June 16, 2026

2 NWS warnings — wind gusts up to 50 mph

“WHAT...Southwest winds 20 to 25 mph with gusts up to 50 mph expected. WHERE...Portions of northeast Kansas and north central, northwest, and west central Missouri. WHEN...From 7 AM to 1 PM CDT Wednesday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mercer County

“WHAT...Southwest winds 20 to 25 mph with gusts up to 50 mph expected. WHERE...Portions of northeast Kansas and north central, northwest, and west central Missouri. WHEN...From 7 AM to 1 PM CDT Wednesday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mercer County

Thursday, June 11, 2026

3 SPC verified storm reports — hail up to 1", wind gusts up to 65 mph

NEXRAD radar during the Thursday, June 11, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Estimated 60 to 65 mph gusts in Mercer. (EAX)”

SPC verified report · Mercer

“Social media report. Time estimated from radar. (EAX)”

SPC verified report · 3 WNW Princeton

Wednesday, June 10, 2026

9 SPC verified storm reports — hail up to 1.75", 4 tornado reports

NEXRAD radar during the Wednesday, June 10, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“A second supercell in Mercer County produced a brief EF-0 tornado near U.S. Highway 65 north of Princeton on 10 June... continuing to the northeast across Finch Avenue (EAX)”

SPC verified report · 3 NNE Princeton

“Corrects previous tornado report from 4 E Mercer. Public recorded video of tornado on the ground. Approximate location estimated by radar. (EAX)”

SPC verified report · 3 ENE Princeton

Monday, April 27, 2026

1 NWS warning — wind gusts up to 50 mph

“Gusty winds are expected late this morning into the early afternoon as an area of rain and embedded thunderstorms continues to shift eastward through portions of eastern Iowa and northwest Illinois. Winds will increase on the western edge of the shield of precipitation with gusts between 40 to 50 mph possible out of an east to southeasterly direction.”

NWS severe weather mention · Mercer County

Friday, April 17, 2026

1 SPC verified storm report — hail up to 1.75"

NEXRAD radar during the Friday, April 17, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Civilian sent photo of quarter to golf ball size hail from rural Mercer County northeast of Cainsville. Time estimated from radar. (EAX)”

SPC verified report · 4 NE Cainsville

Wednesday, April 15, 2026

1 SPC verified storm report — hail up to 1"

NEXRAD radar during the Wednesday, April 15, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Social media report. Time estimated from radar. (EAX)”

SPC verified report · Mercer

Thursday, April 2, 2026

1 SPC verified storm report — hail up to 1.75"

NEXRAD radar during the Thursday, April 2, 2026 storm activity in Mercer County, Missouri
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Social media report. Time estimated from radar. (EAX)”

SPC verified report · 3 W Mercer

Monday, March 16, 2026

3 NWS warnings — wind gusts up to 60 mph

“WHAT...Northwest winds 25 to 30 mph with gusts up to 60 mph. WHERE...Portions of northwest and west central Illinois, east central, northeast, and southeast Iowa, and northeast Missouri. WHEN...Until 6 AM CDT early this morning. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Mercer County

“WHAT...For the High Wind Warning, northwest winds 25 to 30 mph with gusts up to 50 mph. For the Wind Advisory, northwest winds 25 to 30 mph with gusts up to 45 mph expected. WHERE...Portions of north central, northeast, and northwest Missouri. WHEN...For the High Wind Warning, until 4 AM CDT early this morning. For the Wind Advisory, until 7 AM CDT this morning.”

NWS severe weather mention · Mercer County

Sunday, March 15, 2026

7 NWS warnings — wind gusts up to 60 mph

“WHAT...For the High Wind Warning, northwest winds 25 to 35 mph with gusts up to 60 mph. For the Wind Advisory, northwest winds 25 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of north central, northeast, and northwest Missouri. WHEN...For the High Wind Warning, until 4 AM CDT Monday. For the Wind Advisory, from 4 AM to 7 AM CDT Monday.”

NWS severe weather mention · Mercer County

“WHAT...For the High Wind Warning, northwest winds 25 to 35 mph with gusts up to 60 mph. For the Wind Advisory, northwest winds 25 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of north central, northeast, and northwest Missouri. WHEN...For the High Wind Warning, until 4 AM CDT Monday. For the Wind Advisory, from 4 AM to 7 AM CDT Monday.”

NWS severe weather mention · Mercer County

Saturday, March 14, 2026

5 NWS warnings — wind gusts up to 60 mph

“WHAT...For the High Wind Warning, northwest winds 25 to 35 mph with gusts up to 60 mph expected. For the Wind Advisory, northwest winds 20 to 30 mph with gusts up to 45 mph expected. WHERE...Portions of north central, northeast, and northwest Missouri. WHEN...For the High Wind Warning, from 1 PM Sunday to 4 AM CDT Monday. For the Wind Advisory, from 4 AM to noon CDT Monday.”

NWS severe weather mention · Mercer County

“WHAT...For the High Wind Warning, northwest winds 25 to 35 mph with gusts up to 60 mph expected. For the Wind Advisory, northwest winds 20 to 30 mph with gusts up to 45 mph expected. WHERE...Portions of north central, northeast, and northwest Missouri. WHEN...For the High Wind Warning, from 1 PM Sunday to 4 AM CDT Monday. For the Wind Advisory, from 4 AM to noon CDT Monday.”

NWS severe weather mention · Mercer County

Thursday, March 12, 2026

2 NWS warnings — wind gusts up to 55 mph

“WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph expected. The winds will switch to the west-northwest after Midnight, when there could be even higher gusts. WHERE...Portions of north central, northwest, and west central Illinois, east central and southeast Iowa, and northeast Missouri. WHEN...From 10 PM this evening to 3 PM CDT Friday.”

NWS severe weather mention · Mercer County

“WHAT...Southwest to west winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of east central Kansas and central, north central, northeast, and west central Missouri. WHEN...From 3 PM this afternoon to 4 AM CDT Friday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Mercer County

Wednesday, February 18, 2026

2 NWS warnings — wind gusts up to 50 mph

“...Critical Fire Weather Conditions Continue... AFFECTED AREA...Portions of eastern Iowa, northwest Illinois, and northeast Missouri. TIMING...Until 8 PM CST this evening. WINDS...West-southwest winds 25 to 30 mph, with gusts up to 50 mph. RELATIVE HUMIDITY...As low as 15 percent. IMPACTS...Any fire that develops will quickly spread out of control. Fire behavior is expected to be extreme.”

NWS severe weather mention · Mercer County

“...Critical Fire Weather Conditions Today... AFFECTED AREA...Portions of eastern Iowa and northwest Illinois TIMING...From Wednesday morning through Wednesday evening. WINDS...Southwest 20 to 30 mph with gusts up to 50 mph. RELATIVE HUMIDITY...As low as 15 percent. IMPACTS...Any fire that develops will catch and spread quickly. Fire behavior is expected to be extreme.”

NWS severe weather mention · Mercer County

Today's severe weather outlook

Storm Prediction Center Day 1 convective outlook — national severe weather risk map for today
Storm Prediction Center Day 1 convective outlook: categorical severe weather risk for today, updated several times daily. Source: NOAA/NWS Storm Prediction Center.

Common questions

When was the last severe storm in Mercer County, MO?

The most recent recorded event was on Sep 19, 2026. Official NWS and SPC records show 42 severe weather events in Mercer County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.

Did it hail in Mercer County recently?

Yes — 8 hail reports in the last 12 months, with hail up to 1.75" recorded. The hail map above shows where reports clustered; the storm log lists each day.

How do I see hail history for a specific address in Mercer County?

Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property, including the most recent 30 days — county-level pages like this one only tell part of the story.

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Proudly AI-powered. Honestly sourced. IDOLCheck is built by HailyAI. Every storm event, magnitude, radar snapshot, and date on this page is deterministic — retrieved directly from official NOAA, National Weather Service (NWS), and Storm Prediction Center (SPC) storm records through HailyAPI and displayed exactly as reported. Quoted warning and report text is always attributed to its official source. Where the surrounding copy is not a direct quote, it was generated with AI assistance from that same verified storm data and reviewed and approved by humans before publication. AI organizes and presents the record — it never invents storm data.
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