Illinois, 2006

Hail and Heavy Rain in Illinois, March 11, 2006

March 11, 2006 · NWS DVN · 16 events in 4 counties and zones

Scattered thunderstorms developed ahead of a cold front that moved through west central and northwest Illinois. The storms were essentially elevated in nature due to the lack of high winds at the surface.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$22,000
Crop damage
None recorded
Events
16

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS DVN wrote it up.

Scattered thunderstorms developed ahead of a cold front that moved through west central and northwest Illinois. The storms were essentially elevated in nature due to the lack of high winds at the surface. In most cases the hail was marginally severe due to the higher reflectivities aloft barely getting above the freezing level.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before the first event at Mar 11, 3:31 PM CST, 13 minutes earlier.

Area forecast discussion, Mar 11, 3:31 PM CST, 13 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
330 PM CST SAT MAR 10
Hazardous weather outlook, Mar 11, 12:16 PM CST, 3 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1216 PM CST SAT MAR 11 2006

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-121730-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
1216 PM CST SAT MAR 11 2006

...SLIGHT RISK OF SEVERE WEATHER TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

FLOW FROM THE GULF OF MEXICO HAS ALLOWED WARM AND MOIST AIR TO
WORK ITS WAY TOWARD THE MID-MISSISSIPPI RIVER VALLEY THIS MORNING.
THE WARM AND MOIST AIR SHOULD AID INSTABILITY THIS AFTERNOON...
ALLOWING THUNDERSTORMS TO DEVELOP IN THE AREA. THE PRIMARY THREAT
FOR SEVERE WEATHER EXISTS SOUTH OF HIGHWAY 92 IN IOWA... IN ALL OF
NORTHEASTERN MISSOURI... AND ALONG AND EAST OF THE MISSISSIPPI
RIVER. ENOUGH WIND SHEAR IS PRESENT TO ALLOW DEVELOPMENT OF
SUPERCELL THUNDERSTORMS THAT WILL EVOLVE INTO A LINE OF STORMS
LATER IN THE EVENING. THE MAIN THREAT FROM THESE THUNDERSTORMS
WILL BE LARGE HAIL... ALTHOUGH DAMAGING WIND GUSTS ARE POSSIBLE AS
THE STORMS EVOLVE INTO A LINE IN THE EVENING. AN ISOLATED TORNADO
CANNOT BE RULED OUT... ALTHOUGH THE GREATER THREAT FOR TORNADOES
EXISTS IN EAST CENTRAL MISSOURI INTO SOUTHERN ILLINOIS. BRIEF HEAVY
RAINS MAY ALSO ACCOMPANY THUNDERSTORMS TODAY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

ON SUNDAY... A MODERATE RISK OF SEVERE WEATHER EXISTS FOR THE AREA
SOUTH OF HIGHWAY 34 AND A SLIGHT RISK FOR SEVERE WEATHER EXISTS
FOR THE REST OF THE AREA. A STORM SYSTEM MOVING THROUGH THE AREA
ON SUNDAY AFTERNOON WILL AGAIN ALLOW SUPERCELL STORMS TO DEVELOP
IN THE AREA. WITH MORE MOISTURE TOMORROW THAN TODAY AS WELL AS
STRONGER WIND SHEAR... THESE STORMS WILL BE CAPABLE OF PRODUCING
LARGE HAIL... DAMAGING WINDS... AND ISOLATED TORNADOES. PLEASE
STAY TUNED TO KEEP ABREAST OF FORECAST UPDATES AS THIS SCENARIO
EVOLVES.

ON WEDNESDAY AND THURSDAY... A DISTURBANCE FROM THE PACIFIC WILL
BRING RAIN AND SNOW TO THE AREA. IT IS TOO EARLY TO ASSESS THE
POTENTIAL FOR RAIN AND SNOW AMOUNTS WITH THIS SYSTEM.

THE LOCALLY HEAVY RAINS POSSIBLE WITH STORMS THIS WEEK MAY CAUSE
LOCAL RIVERS TO EXPERIENCE MODERATE RISES. CURRENT RIVER LEVELS
ARE RUNNING NEAR TO BELOW NORMAL DUE TO THE ONGOING DROUGHT ACROSS
THE REGION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON AND EVENING AS WELL AS
TOMORROW. PLEASE REPORT ANY SEVERE WEATHER TO THE NATIONAL WEATHER
SERVICE OFFICE IN THE QUAD CITIES.

MAYES

The radar

The Lincoln radar (KILX), 137 km away, was scanning. The volume nearest the first event began at 21:42 UTC.

Open the radar archive at this moment

Event by event

15 hail, 1 heavy rain. Local standard time, as filed.

Hail, Hancock

When
March 11, 3:44 PM CST
Where
Hancock County, Augusta
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.233, -90.950

also reported by police/fire; dime size hail

Hail, Hancock

When
March 11, 3:44 PM CST
Where
Hancock County, Plymouth
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.283, -90.917

Dime size hail

Hail, McDonough

When
March 11, 3:55 PM CST to 3:58 PM CST
Where
McDonough County, Tennessee
Measured
1.25 in hail
Property damage
$4,000
Reported by
TRAINED SPOTTER
Coordinates
40.417, -90.833

Dime to half dollar sized hail

Hail, McDonough

When
March 11, 3:57 PM CST to 4:07 PM CST
Where
McDonough County, Macomb
Measured
0.88 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.467, -90.667

Hail, McDonough

When
March 11, 4:13 PM CST
Where
McDonough County, 1 mi NW of Macomb
Measured
1 in hail
Property damage
$3,000
Reported by
TRAINED SPOTTER
Coordinates
40.483, -90.683

Dime to quarter sized hail covering the ground.

Hail, Warren

When
March 11, 4:25 PM CST to 4:27 PM CST
Where
Warren County, Swan Creek
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.667, -90.650

Penny sized hail

Heavy Rain, McDonough

When
March 11, 4:57 PM CST to 5:27 PM CST
Where
McDonough County, Macomb
Reported by
TRAINED SPOTTER
Coordinates
40.456, -90.678 (the zone’s center; the record gives no point)

1 inch of rain in the past 30 minutes with minor street flooding.

Hail, McDonough

When
March 11, 4:58 PM CST
Where
McDonough County, Colchester
Measured
0.88 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.433, -90.800

Dime to nickel sized hail

Hail, McDonough

When
March 11, 5:00 PM CST to 5:05 PM CST
Where
McDonough County, 1 mi W of Macomb
Measured
1 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.467, -90.683

Penny to Quarter sized hail.

Hail, McDonough

When
March 11, 5:04 PM CST
Where
McDonough County, Prairie City
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.617, -90.450

Penny sized hail

Hail, Henry

When
March 11, 5:12 PM CST to 5:21 PM CST
Where
Henry County, Woodhull
Measured
1 in hail
Property damage
$4,000
Reported by
TRAINED SPOTTER
Coordinates
41.183, -90.317

Penny to Quarter sized hail rapidly covering the ground

Hail, Henry

When
March 11, 5:23 PM CST to 5:24 PM CST
Where
Henry County, Cambridge
Measured
1.75 in hail
Property damage
$8,000
Reported by
TRAINED SPOTTER
Coordinates
41.300, -90.200

Hail ranging from pea to golfball.

Hail, Henry

When
March 11, 5:33 PM CST to 5:37 PM CST
Where
Henry County, 3 mi W of Atkinson
Measured
0.88 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.417, -90.067

Dime to nickel sized hail covering the ground at mile marker 25 on I-80. Time is estimated based on radar.

Hail, Warren

When
March 11, 5:35 PM CST
Where
Warren County, 2 mi SSE of Greenbush
Measured
0.75 in hail
Reported by
GENERAL PUBLIC
Coordinates
40.683, -90.517

Dime size hail

Hail, Henry

When
March 11, 5:42 PM CST
Where
Henry County, 1 mi W of Geneseo
Measured
0.88 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.450, -90.167

Hail, Henry

When
March 11, 6:36 PM CST
Where
Henry County, 6 mi N of Galva
Measured
1 in hail
Property damage
$3,000
Reported by
TRAINED SPOTTER
Coordinates
41.250, -90.050

Quarter sized hail.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Illinois in 2006Every state in 2006This day in weather historyWarnings in Illinois, March 2006

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5497886, 5497887, 5497875, 5497889, 5497876, 5497877, 5497884, 5497878, 5497879, 5497880, 5497881, 5497882, 5497883, 5497888, 5497890, 5497885.