Illinois, 2001

Tornado in Illinois, April 10, 2001

April 10, 2001 · NWS LSX · 1 event in 1 county or zone

1 tornado, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. 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
1
Property damage
$5.0 million
Crop damage
None recorded
Events
1

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 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 St. Louis, MO wrote its last area forecast discussion before the first event at Apr 10, 2:45 PM CST, 5 hours 50 minutes earlier.

Area forecast discussion, Apr 10, 2:45 PM CST, 5 hours 50 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
345 PM CDT TUE APR 10 2001

LATEST SFC ANLYS SHWG CDFNT STRETCHING FM NR KEMP TO NORTH OF KCOU
AND KSTL TO NR KLAF WITH LRG SCALE OUTFLOW BNDRY FM MRNG CNVCTN VERY
EVIDENT ON RADAR AND STLT FM JUST SOUTH OF KJEF THRU FRANKLIN CO TO
SOUTH OF KMVN.  AMS SOUTH OF THE OB HAS BCM PRETTY UNSTBL WITH CAPES
AOA 2000 J/KG.  SCT TSTRMS BGNG TO DVLP ON NWD MOVG OUTFLOW BNDRY
ATTM.  OTW LINEAR CLUSTER OF STRMS FM NE KS THRU WC MO BGNG TO
INTERACT WITH OB ON THE WRN FRINGE.  LLJ ALREADY BGNG TO BACK TO
MORE SLY AND THIS COMBINED WITH SOME ASCENT ASSOCD WITH THE SHRTWV
LIFTING THRU NE KS AND THE TWO BNDRYS SHUD LEAD TO BEST CNVCTV
THREAT OVR THE NRN HALF OF THE CWFA.  CONVECTIVE TRENDS OVR SE MO/SW
IL A BIT VAGUE BUT LESSER THAN FURTHER NORTH.  SOME HVY RN THREAT
OVR NE MO/WC IL BUT LONGEVITY AND FAST MVMNT PRECLUDING ISSUANCE OF
ANOTHER FFA ATTM.  LCL HVY RAFL LAST NGT WAS PRETTY ISOLD...AND WL
LET EVNG SHIFT ASSESS THE NEED FOR AN FFA SHUD IT ARISE.

STILL LOOKS LIKE A PRETTY GOOD SQLN SHUD EVOLVE ACRS THE WRN PLAINS
THIS EVENING...SWEEPING EWD IN ADVANCE OF THE EJECTING SW UPR
LOW/TROF.  BLV SQLN WL BE OVR ERN KS IN THE MRNG AND SHUD BE IN A
WKNG PHASE.  EITHER NEW LN OR REINTENSIFICATION OF THIS OLD SQLN
SHUD OCCUR TMW IN ADVANCE OF THE DRYLN AS LRG SCALE FRCG INCRSS WITH
LIFTING UPR TROF AND LOW LVLS UNDERGO DIURNAL DESTABILIZATION. SVR
THREAT CERTAINLY BEARS WATCHING CLOSELY WITH STG WND FIELDS AND DP
SHEAR.  OTHER THING TO WATCH ON WED IS WNDS.  THEY CUD HIT ADVSRY
CRITERIA TMW AFT...SPCLY IN THE WAKE OF THE SFC DRYLN WHERE DP MXG
BENEATH MID LVL DRY SLOT WL ENHANCE ALREADY TIGHTNING PRES GRAD.  WL
LET THE MID SHIFT ASSESS THIS NEED AS IT MAY BE NEEDED FOR EVNG AS
WELL.  DRYLN SHUD BE BTWN COU-STL BY 00Z THURS AND WL CONT MENTION
OF EVNG POPS AS A RESULT.

STEADY AS SHE GOES LATER PDS WITH NEW AVN INDCTG BEST PCPN THREAT ON
FRI PROBABLY DURING THE NGT FM STL SWD.  TMPS RETURN TO MORE
SEASONABLE NORMS FOR THE WKND.

.STL...NONE
GLASS

The radar

The St Louis radar (KLSX), 48 km away, was scanning. The volume nearest the first event began at 02:35 UTC.

Open the radar archive at this moment

Event by event

1 tornado. Local standard time, as filed.

Tornado, Madison

When
April 10, 8:35 PM CST to 8:38 PM CST
Where
Madison County, Granite City
Rating
F1
Path length
2 mi
Path width
100 yd
Injuries
1 direct, 0 indirect
Property damage
$5.0 million
Reported by
NWS STORM SURVEY
Coordinates
38.717, -90.133

The 6th and last tornado spawned by the Heavy Precipitation Supercell that moved across the NWS St. Louis, County Warning Area, formed on the east side of Granite City and moved east into south Pontoon Beach. The tornado first damaged an apartment complex near Worthen Park. Two buildings were destroyed with 4 others suffering major to minor damage. Several cars in the parking lot were damaged by flying debris. One person was injured by flying glass. The tornado caused intermittent damage as it moved east across the Legacy Golf Course. Trees were downed and 3 homes suffered roof damage. In southern Pontoon Beach, one house was destroyed as the attached garage was blown away and the entire roof blown off. About 20 other homes/businesses were damaged before the tornado dissipated.

What these are

Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

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

The same day elsewhere

More

Every storm in Illinois in 2001Every state in 2001This day in weather historyThe tornado archive for Illinois, 2001Warnings in Illinois, April 2001

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: 5243225.