Flash Flooding and Flood in Illinois, October 24, 2021

Name: Flash Flooding and Flood in Illinois, October 24, 2021
Start: 2021-10-24T16:20
End: 2021-10-24T21:30
Location: Illinois

October 24, 2021 · NWS ILX · 16 events in 10 counties and zones

Low pressure tracking from near Kansas City around midday on October 24th into central Illinois during the evening of the 24th triggered two distinct bands of pre-frontal convection. Some of the storms produced damaging wind gusts of 60 to 70mph and hail as large as golf balls.

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: 0
Property damage: None recorded
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 ILX wrote it up.

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 Lincoln, IL wrote its last area forecast discussion before the first event at Oct 24, 2:44 PM CST, 1 hour 36 minutes earlier.

Area forecast discussion, Oct 24, 2:44 PM CST, 1 hour 36 minutes before

Area Forecast Discussion
National Weather Service Lincoln IL
344 PM CDT Sun Oct 24 2021

.SYNOPSIS...
Issued at 344 PM CDT Sun Oct 24 2021

Multiple severe weather hazards exist across central Illinois late
this afternoon and evening...including the potential for flash
flooding. Be sure to review your weather safety plan and stay
situationally aware.

&&

.SHORT TERM...(This evening through Monday)
ISSUED AT 344 PM CDT Sun Oct 24 2021

20z/3pm surface analysis shows a 997mb low over northwest Missouri
with a warm front extending eastward along a Kirksville...to
Taylorville...to Terre Haute line. Temperatures have surged well
into the 70s south of the boundary, while readings hover in the
50s to the north. As expected, a couple bands of convection are
developing within the warm sector of the system. The first extends
from near Macomb southwestward to Columbia, Missouri...while the
second is further west immediately along an advancing cold front
across western Missouri. Given high degree of wind shear in the
environment, all severe hazards will be possible as the storms
track through the area late this afternoon and evening. Damaging
wind gusts and large hail will be the primary threats: however, a
couple embedded tornadoes may develop along the lines...especially
this evening for locations along/south of I-72. Based on regional
radar trends and latest HRRR, it appears the western line of
convection will push across the I-57 corridor by around
midnight...then into Indiana shortly afterwards. As the surface
low lifts into north-central Illinois late tonight, showers will
wrap back into the area and will linger through at least midday
Monday before gradually tapering off and coming to an end from
west to east during the afternoon. Main weather story on Monday
will be the windy and colder conditions. After a brief warm-up
this evening when the warm front lifts north of I-72, temps will
crash late tonight and will remain in the lower to middle 50s on
Monday. In addition, strong NW winds gusting 30-40mph will make it
feel even chillier.

&&

.LONG TERM...(Monday night through Sunday)
ISSUED AT 344 PM CDT Sun Oct 24 2021

High pressure will build into the region Monday night, resulting
in clearing skies and diminishing winds. With low temperatures
expected to drop into the middle 30s, think patchy frost is a
good bet across the Illinois River Valley. Further east, think
temps will remain a bit too warm in the upper 30s and lower
40s...and winds will remain too strong for frost formation. After
a chilly start to the day, ample sunshine will warm readings into
the upper 50s and lower 60s.

After that, another frontal boundary will swing into the Midwest
by the middle of the week. With the associated upper low cutting
off from the main flow, this system will be slow to arrive and
slow to depart. As a result, have delayed PoPs on Wednesday...and
these may need to be further reduced or even removed entirely if
trends continue. Have then gone with high PoPs Wednesday night
through Friday before the system finally departs by next weekend.

&&

.AVIATION...(For the 18Z TAFS through 18Z Monday afternoon)
Issued at 111 PM CDT Sun Oct 24 2021

IFR ceilings will prevail across central Illinois for the next
couple of hours before a warm front pushes northward and improves
ceilings later this afternoon/evening. Based on current placement
of front and 12z NAM/HRRR data, it appears will rise to VFR at
KSPI by 20z...then further NE to KDEC/KCMI by around 22z. KPIA
will likely remain IFR/MVFR for the entire 18z TAF period. Radar
imagery shows a relative lull in precip: however, a line of
convection is beginning to take shape across western Missouri.
These storms will continue to develop and track E/NE into central
Illinois late this afternoon and evening. Will continue to feature
VCTS at the terminals for now, but will likely upgrade to
prevailing once radar trends are more apparent and exact timing
becomes certain. One or two lines of storms will push through the
area this evening before a cold front sweeps the convection into
Indiana after midnight. Once the front passes, winds will veer to
NW and MVFR ceilings will spill back across all of central
Illinois overnight into Monday morning. Winds will also become
strong/gusty behind the front, with numeric guidance and forecast
soundings suggesting gusts in excess of 30kt on Monday.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Monday morning for ILZ027>031-036>038-
040>048.

Flood Watch through Monday morning for ILZ049>051-053.

Flash Flood Watch through Monday morning for ILZ051.

&&

SYNOPSIS...Barnes
SHORT TERM...Barnes
LONG TERM...Barnes
AVIATION...Barnes

Hazardous weather outlook, Oct 24, 2:03 PM CST, 2 hours 17 minutes before

Hazardous Weather Outlook
National Weather Service Lincoln IL
303 PM CDT Sun Oct 24 2021

ILZ027>031-036>038-040>048-252015-
Cass-Champaign-De Witt-Fulton-Knox-Logan-Marshall-Mason-McLean-
Menard-Peoria-Piatt-Schuyler-Stark-Tazewell-Vermilion-Woodford-
303 PM CDT Sun Oct 24 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY MORNING...

This Hazardous Weather Outlook is for portions of central
Illinois, east central Illinois and west central Illinois.

.DAY ONE...TONIGHT...

The threat for severe weather will be primarily this evening.
Large hail up to the size of quarters, damaging thunderstorm wind
gusts between 60-70 mph, and a few tornadoes will be possible.

Periods of heavy rainfall may lead to localized flash flooding.
Widespread amounts between 1-3" will be most common, but localized
amounts between 4-6" are possible.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

Winds will remain gusty on Monday as the frontal system departs
the region. Occasional gusts to 35 mph will be possible during the
afternoon hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this evening.

ILZ049-050-053-252015-
Macon-Morgan-Scott-
303 PM CDT Sun Oct 24 2021

...FLOOD WATCH IN EFFECT THROUGH MONDAY MORNING...

This Hazardous Weather Outlook is for portions of central
Illinois and west central Illinois.

.DAY ONE...TONIGHT...

The threat for severe weather will be primarily this evening.
Large hail up to the size of quarters, damaging thunderstorm wind
gusts between 60-70 mph, and a few tornadoes will be possible.

Periods of heavy rainfall may lead to localized flash flooding.
Widespread amounts between 1-3" will be most common, but localized
amounts between 4-6" are possible.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

Winds will remain gusty on Monday as the frontal system departs
the region. Occasional gusts to 35 mph will be possible during the
afternoon hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this evening.

ILZ051-252015-
Sangamon-
303 PM CDT Sun Oct 24 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY MORNING...

This Hazardous Weather Outlook is for portions of central
Illinois.

.DAY ONE...TONIGHT...

The threat for severe weather will be primarily this evening.
Large hail up to the size of quarters, damaging thunderstorm wind
gusts between 60-70 mph, and a few tornadoes will be possible.

Periods of heavy rainfall may lead to localized flash flooding.
Widespread amounts between 1-3" will be most common, but localized
amounts between 4-6" are possible.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

Winds will remain gusty on Monday as the frontal system departs
the region. Occasional gusts to 35 mph will be possible during the
afternoon hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this evening.

ILZ052-054>057-061>063-066>068-071>073-252015-
Christian-Clark-Clay-Coles-Crawford-Cumberland-Douglas-Edgar-
Effingham-Jasper-Lawrence-Moultrie-Richland-Shelby-
303 PM CDT Sun Oct 24 2021

This Hazardous Weather Outlook is for portions of central
Illinois, east central Illinois and southeast Illinois.

.DAY ONE...TONIGHT...

The threat for severe weather will ramp up this evening. Large
hail up to the size of quarters, damaging thunderstorm wind gusts
between 60-70 mph, and a few tornadoes will be possible.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

Winds will remain gusty on Monday as the frontal system departs
the region. Occasional gusts to 35 mph will be possible during the
afternoon hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this evening.

Shimon

In the hours before

Local storm report, Oct 24, 11:35 AM CST, 4 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1235 PM CDT SUN OCT 24 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1215 PM     HEAVY RAIN       1 SW JACKSONVILLE AIRPO 39.77N 90.25W
10/24/2021  M3.20 INCH       MORGAN             IL   AWOS

            AWOS STATION KIJX JACKSONVILLE MUNI AP.

1209 PM     HEAVY RAIN       1 NE PEORIA INTL AIRPOR 40.67N 89.68W
10/24/2021  M1.60 INCH       PEORIA             IL   ASOS

            ASOS STATION KPIA PEORIA INTL AIRPORT.

1154 AM     HEAVY RAIN       1 E DECATUR AIRPORT     39.83N 88.85W
10/24/2021  M1.51 INCH       MACON              IL   ASOS

            ASOS STATION KDEC DECATUR AP.

1200 PM     HEAVY RAIN       4 S BONDVILLE           40.05N 88.37W
10/24/2021  M1.46 INCH       CHAMPAIGN          IL   MESONET

            MESONET STATION BNDI2 UI BONDVILLE CHAMPAIGN
            9 SW IL US.

1100 AM     HEAVY RAIN       2 NE MACKINAW           40.55N 89.33W
10/24/2021  M1.45 INCH       TAZEWELL           IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION MACI2 MACKINAW 2NE.

1030 AM     HEAVY RAIN       YATES CITY              40.78N 90.02W
10/24/2021  M1.36 INCH       KNOX               IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION YATI2 YATES CITY.

1000 AM     HEAVY RAIN       5 SSW LE ROY            40.29N 88.80W
10/24/2021  M1.31 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-7 LE ROY 4.1 SSW.

1227 PM     HEAVY RAIN       1 SE WILLARD AIRPORT    40.03N 88.27W
10/24/2021  M1.25 INCH       CHAMPAIGN          IL   ASOS

            ASOS STATION KCMI WILLARD AIRPORT.

1050 AM     HEAVY RAIN       1 E OLNEY               38.73N 88.07W
10/24/2021  M1.20 INCH       RICHLAND           IL   COCORAHS

            COCORAHS STATION IL-RC-3 OLNEY 0.7 E.

1156 AM     HEAVY RAIN       1 SSW CENTRAL ILLINOIS  40.47N 88.92W
10/24/2021  M1.15 INCH       MCLEAN             IL   AWOS

            AWOS STATION KBMI CENTRAL ILLINOIS AIRPORT.

&&

Local storm report, Oct 24, 12:25 PM CST, 3 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
125 PM CDT SUN OCT 24 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0610 AM     FLASH FLOOD      JACKSONVILLE            39.73N 90.23W
10/24/2021                   MORGAN             IL   LAW ENFORCEMENT

            DELAYED REPORT. ROUTE STREET AND COUNTRY
            CLUB ROAD WERE BARRICADED DUE TO FLOOD
            WATER.

&&

Local storm report, Oct 24, 12:39 PM CST, 3 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
139 PM CDT SUN OCT 24 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 AM     HEAVY RAIN       1 WNW SPRINGFIELD       39.81N 89.66W
10/24/2021  M1.82 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-52 SPRINGFIELD 1.9
            NNW.

1239 PM     HEAVY RAIN       1 E CANTON              40.56N 90.02W
10/24/2021  M1.77 INCH       FULTON             IL   COCORAHS

            COCORAHS STATION IL-FL-17 CANTON 1.2 ESE.

1200 PM     HEAVY RAIN       2 SE AUBURN             39.58N 89.72W
10/24/2021  M1.76 INCH       SANGAMON           IL   MESONET

0700 AM     HEAVY RAIN       3 W LELAND GROVE        39.78N 89.73W
10/24/2021  M1.73 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-17 SPRINGFIELD 4.4 W.

0900 AM     HEAVY RAIN       3 NNE ASHLAND           39.92N 89.99W
10/24/2021  M1.71 INCH       MENARD             IL   COCORAHS

            COCORAHS STATION IL-ME-13 TALLULA 3.0 WSW.

1100 AM     HEAVY RAIN       ASTORIA                 40.23N 90.36W
10/24/2021  M1.48 INCH       FULTON             IL   MESONET

0100 PM     HEAVY RAIN       NWS LINCOLN             40.15N 89.33W
10/24/2021  M1.40 INCH       LOGAN              IL   OFFICIAL NWS OBS

            RAINFALL SINCE MIDNIGHT.

1253 PM     HEAVY RAIN       1 SE WILLARD AIRPORT    40.03N 88.27W
10/24/2021  M1.34 INCH       CHAMPAIGN          IL   ASOS

            ASOS STATION KCMI WILLARD AIRPORT.

0100 PM     HEAVY RAIN       3 SSW SWEETWATER        40.02N 89.72W
10/24/2021  M1.27 INCH       MENARD             IL   PUBLIC

&&

Local storm report, Oct 24, 12:46 PM CST, 3 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
146 PM CDT SUN OCT 24 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1015 AM     HEAVY RAIN       1 SW JACKSONVILLE AIRPO 39.77N 90.25W
10/24/2021  M3.17 INCH       MORGAN             IL   AWOS

            AWOS STATION KIJX JACKSONVILLE MUNI AP.

1023 AM     HEAVY RAIN       1 NNW CAPITAL AIRPORT   39.85N 89.68W
10/24/2021  M2.04 INCH       SANGAMON           IL   ASOS

            ASOS STATION KSPI SPRINGFIELD CAPITAL AP.

0620 AM     HEAVY RAIN       1 WNW SPRINGFIELD       39.81N 89.66W
10/24/2021  M1.82 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-52 SPRINGFIELD 1.9
            NNW.

1239 PM     HEAVY RAIN       1 E CANTON              40.56N 90.02W
10/24/2021  M1.77 INCH       FULTON             IL   COCORAHS

            COCORAHS STATION IL-FL-17 CANTON 1.2 ESE.

1200 PM     HEAVY RAIN       2 SE AUBURN             39.58N 89.72W
10/24/2021  M1.76 INCH       SANGAMON           IL   MESONET

0700 AM     HEAVY RAIN       3 W LELAND GROVE        39.78N 89.73W
10/24/2021  M1.73 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-17 SPRINGFIELD 4.4 W.

0900 AM     HEAVY RAIN       3 NNE ASHLAND           39.92N 89.99W
10/24/2021  M1.71 INCH       MENARD             IL   COCORAHS

            COCORAHS STATION IL-ME-13 TALLULA 3.0 WSW.

1018 AM     HEAVY RAIN       1 SSW MURDOCK           39.78N 88.09W
10/24/2021  M1.61 INCH       DOUGLAS            IL   COCORAHS

            COCORAHS STATION IL-DG-12 CAMARGO 4.5 ESE.

1209 PM     HEAVY RAIN       1 NE PEORIA INTL AIRPOR 40.67N 89.68W
10/24/2021  M1.60 INCH       PEORIA             IL   ASOS

            ASOS STATION KPIA PEORIA INTL AIRPORT.

1154 AM     HEAVY RAIN       1 E DECATUR AIRPORT     39.83N 88.85W
10/24/2021  M1.51 INCH       MACON              IL   ASOS

            ASOS STATION KDEC DECATUR AP.

1100 AM     HEAVY RAIN       ASTORIA                 40.23N 90.36W
10/24/2021  M1.48 INCH       FULTON             IL   MESONET

0900 AM     HEAVY RAIN       4 ENE SOUTH PEKIN       40.52N 89.60W
10/24/2021  M1.46 INCH       TAZEWELL           IL   COCORAHS

            COCORAHS STATION IL-TZ-26 PEKIN 3.6 SSE.

1025 AM     HEAVY RAIN       1 NE PEORIA INTL AIRPOR 40.67N 89.68W
10/24/2021  M1.46 INCH       PEORIA             IL   ASOS

            ASOS STATION KPIA PEORIA INTL AIRPORT.

1200 PM     HEAVY RAIN       4 S BONDVILLE           40.05N 88.37W
10/24/2021  M1.46 INCH       CHAMPAIGN          IL   MESONET

            MESONET STATION BNDI2 UI BONDVILLE CHAMPAIGN
            9 SW IL US.

1100 AM     HEAVY RAIN       2 NE MACKINAW           40.55N 89.33W
10/24/2021  M1.45 INCH       TAZEWELL           IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION MACI2 MACKINAW 2NE.

0100 PM     HEAVY RAIN       NWS LINCOLN             40.15N 89.33W
10/24/2021  M1.40 INCH       LOGAN              IL   OFFICIAL NWS OBS

            RAINFALL SINCE MIDNIGHT.

1030 AM     HEAVY RAIN       YATES CITY              40.78N 90.02W
10/24/2021  M1.36 INCH       KNOX               IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION YATI2 YATES CITY.

1253 PM     HEAVY RAIN       1 SE WILLARD AIRPORT    40.03N 88.27W
10/24/2021  M1.34 INCH       CHAMPAIGN          IL   ASOS

            ASOS STATION KCMI WILLARD AIRPORT.

1025 AM     HEAVY RAIN       1 E DECATUR AIRPORT     39.83N 88.85W
10/24/2021  M1.32 INCH       MACON              IL   ASOS

            ASOS STATION KDEC DECATUR AP.

1000 AM     HEAVY RAIN       5 SSW LE ROY            40.29N 88.80W
10/24/2021  M1.31 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-7 LE ROY 4.1 SSW.

0100 PM     HEAVY RAIN       3 SSW SWEETWATER        40.02N 89.72W
10/24/2021  M1.27 INCH       MENARD             IL   PUBLIC

1227 PM     HEAVY RAIN       1 SE WILLARD AIRPORT    40.03N 88.27W
10/24/2021  M1.25 INCH       CHAMPAIGN          IL   ASOS

            ASOS STATION KCMI WILLARD AIRPORT.

1050 AM     HEAVY RAIN       1 E OLNEY               38.73N 88.07W
10/24/2021  M1.20 INCH       RICHLAND           IL   COCORAHS

            COCORAHS STATION IL-RC-3 OLNEY 0.7 E.

1156 AM     HEAVY RAIN       1 SSW CENTRAL ILLINOIS  40.47N 88.92W
10/24/2021  M1.15 INCH       MCLEAN             IL   AWOS

            AWOS STATION KBMI CENTRAL ILLINOIS AIRPORT.

0956 AM     HEAVY RAIN       1 SSW CENTRAL ILLINOIS  40.47N 88.92W
10/24/2021  M1.10 INCH       MCLEAN             IL   AWOS

            AWOS STATION KBMI CENTRAL ILLINOIS AIRPORT.

0745 AM     HEAVY RAIN       1 WSW ROCHESTER         39.74N 89.56W
10/24/2021  M1.03 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-67 ROCHESTER 1.0 SW.

1015 AM     HEAVY RAIN       GALESBURG AIRPORT       40.93N 90.43W
10/24/2021  M1.02 INCH       KNOX               IL   AWOS

            AWOS STATION KGBG GALESBURG MUNI AP.

0610 AM     FLASH FLOOD      JACKSONVILLE            39.73N 90.23W
10/24/2021                   MORGAN             IL   LAW ENFORCEMENT

            DELAYED REPORT. ROUTE STREET AND COUNTRY
            CLUB ROAD WERE BARRICADED DUE TO FLOOD
            WATER.

0700 AM     HEAVY RAIN       SOUTH JACKSONVILLE      39.71N 90.23W
10/24/2021  M3.60 INCH       MORGAN             IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION JCKI2 JACKSONVILLE.

0700 AM     HEAVY RAIN       2 E SOUTH JACKSONVILLE  39.71N 90.19W
10/24/2021  M3.59 INCH       MORGAN             IL   COCORAHS

            COCORAHS STATION IL-MG-14 JACKSONVILLE 2.6
            SE.

0650 AM     HEAVY RAIN       1 WNW SOUTH JACKSONVILL 39.72N 90.25W
10/24/2021  M3.58 INCH       MORGAN             IL   COCORAHS

            COCORAHS STATION IL-MG-9 JACKSONVILLE 1.2
            SW.

0835 AM     HEAVY RAIN       1 SW JACKSONVILLE AIRPO 39.77N 90.25W
10/24/2021  M2.89 INCH       MORGAN             IL   AWOS

            AWOS STATION KIJX JACKSONVILLE MUNI AP.

0840 AM     HEAVY RAIN       3 S PETERSBURG          39.97N 89.85W
10/24/2021  M2.75 INCH       MENARD             IL   PUBLIC

0655 AM     HEAVY RAIN       1 SW JACKSONVILLE AIRPO 39.77N 90.25W
10/24/2021  M2.72 INCH       MORGAN             IL   AWOS

            AWOS STATION KIJX JACKSONVILLE MUNI AP.

0736 AM     HEAVY RAIN       3 SW LOAMI              39.65N 89.88W
10/24/2021  M2.61 INCH       SANGAMON           IL   TRAINED SPOTTER

0800 AM     HEAVY RAIN       2 ESE CHATHAM           39.67N 89.67W
10/24/2021  M2.59 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-11 1 ESE CHATHAM.

0800 AM     HEAVY RAIN       5 SW BERRY              39.66N 89.54W
10/24/2021  M2.00 INCH       SANGAMON           IL   PUBLIC

0700 AM     HEAVY RAIN       3 SSE BLUFF SPRINGS     39.95N 90.33W
10/24/2021  M1.88 INCH       CASS               IL   COCORAHS

            COCORAHS STATION IL-CS-3 3 SE BLUFF SPRINGS.

0700 AM     HEAVY RAIN       3 W LELAND GROVE        39.78N 89.73W
10/24/2021  M1.73 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-17 SPRINGFIELD 4.4 W.

0835 AM     HEAVY RAIN       1 NNW CAPITAL AIRPORT   39.85N 89.68W
10/24/2021  M1.33 INCH       SANGAMON           IL   ASOS

            ASOS STATION KSPI SPRINGFIELD CAPITAL AP.

0700 AM     HEAVY RAIN       3 W EDINBURG            39.65N 89.45W
10/24/2021  M1.26 INCH       CHRISTIAN          IL   COCORAHS

            COCORAHS STATION IL-CN-4 EDINBURG 3.0 W.

0700 AM     HEAVY RAIN       2 E SOUTHERN VIEW       39.76N 89.61W
10/24/2021  M1.25 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-66 SPRINGFIELD 2.2
            SE.

0652 AM     HEAVY RAIN       1 NNW CAPITAL AIRPORT   39.85N 89.68W
10/24/2021  M1.17 INCH       SANGAMON           IL   ASOS

            ASOS STATION KSPI SPRINGFIELD CAPITAL AP.

0725 AM     HEAVY RAIN       BEECHER CITY            39.18N 88.78W
10/24/2021  M1.16 INCH       EFFINGHAM          IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION BEEI2 BEECHER CITY.

0800 AM     HEAVY RAIN       1 N GRANDVIEW           39.84N 89.62W
10/24/2021  M1.13 INCH       SANGAMON           IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION SFDI2 SPRINGFIELD.

0800 AM     HEAVY RAIN       2 E SOUTHERN VIEW       39.76N 89.60W
10/24/2021  M1.13 INCH       SANGAMON           IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION SPNI2 LAKE
            SPRINGFIELD.

0705 AM     HEAVY RAIN       2 W RIVERTON            39.85N 89.58W
10/24/2021  M1.08 INCH       SANGAMON           IL   COCORAHS

            COCORAHS STATION IL-SG-4 2 W RIVERTON.

0700 AM     HEAVY RAIN       1 SSE EFFINGHAM         39.11N 88.53W
10/24/2021  M1.03 INCH       EFFINGHAM          IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION EFMI2 EFFINGHAM 1SE.

0700 AM     HEAVY RAIN       1 E TAYLORVILLE AIRPORT 39.53N 89.31W
10/24/2021  M1.02 INCH       CHRISTIAN          IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION TAYI2 2.5 W
            TAYLORVILLE.

0700 AM     HEAVY RAIN       1 NW BUFFALO            39.86N 89.42W
10/24/2021  M1.00 INCH       SANGAMON           IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION BUFI2 BUFFALO.

&&

Special weather statement, Oct 24, 2:35 PM CST, 1 hour 45 minutes before

Special Weather Statement
National Weather Service Lincoln IL
335 PM CDT Sun Oct 24 2021

ILZ027-029-036-242100-
Peoria-Knox-Fulton-
335 PM CDT Sun Oct 24 2021

...A strong thunderstorm will impact portions of northern Fulton,
south central Knox and southwestern Peoria Counties through 400 PM
CDT...

At 334 PM CDT, Doppler radar was tracking a strong thunderstorm over
New Philadelphia, or 11 miles east of Macomb, moving northeast at 55
mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

This strong thunderstorm will be near...
  Cuba around 345 PM CDT.
  Fairview around 350 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4065 9044 4080 9011 4054 8992 4040 9045
TIME...MOT...LOC 2034Z 241DEG 56KT 4049 9047

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

NMB

Special weather statement, Oct 24, 3:00 PM CST, 1 hour 20 minutes before

Special Weather Statement
National Weather Service Lincoln IL
400 PM CDT Sun Oct 24 2021

ILZ027-029-036-037-242130-
Tazewell-Peoria-Knox-Fulton-
400 PM CDT Sun Oct 24 2021

...A strong thunderstorm will impact portions of northeastern Fulton,
southeastern Knox, northwestern Tazewell and western Peoria Counties
through 430 PM CDT...

At 359 PM CDT, Doppler radar was tracking a strong thunderstorm near
Farmington, or 8 miles north of Canton, moving northeast at 55 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

This strong thunderstorm will be near...
  Yates City around 405 PM CDT.
  Elmwood and Trivoli around 410 PM CDT.
  Hanna City and Brimfield around 415 PM CDT.

This includes the following highways...
 Interstate 474 between mile markers 4 and 8.
 Interstate 74 between mile markers 68 and 83.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4049 9023 4068 9036 4093 8986 4063 8962
TIME...MOT...LOC 2059Z 237DEG 50KT 4068 9007

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

NMB

The radar

The Lincoln radar (KILX), 53 km away, was scanning. The volume nearest the first event began at 22:18 UTC.

Open the radar archive at this moment

Event by event

11 thunderstorm wind, 2 hail, 2 flash flood, 1 flood. Local standard time, as filed.

Thunderstorm Wind, Tazewell

When: October 24, 4:20 PM CST to 4:25 PM CST
Where: Tazewell County, Pekin
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.570, -89.630

Several tree limbs were blown down.

Thunderstorm Wind, McLean

When: October 24, 4:45 PM CST to 4:50 PM CST
Where: McLean County, Stanford
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.430, -89.230

Numerous trees and power lines were blown down.

Thunderstorm Wind, McLean

When: October 24, 5:05 PM CST to 5:10 PM CST
Where: McLean County, 2 mi SW of Bloomington
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.459, -89.007

A large tree was blown onto a metal shed.

Thunderstorm Wind, McLean

When: October 24, 5:15 PM CST to 5:20 PM CST
Where: McLean County, Downs
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.400, -88.870

Numerous trees and power lines were blown down.

Thunderstorm Wind, Morgan

When: October 24, 5:16 PM CST to 5:21 PM CST
Where: Morgan County, 1.53 mi SSW of Jacksonville to 2.51 mi WSW of Arnold
Measured: 70 kt (81 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 39.709, -90.239

Damage was reported along the length of Vandalia Road on the south side of Jacksonville. Numerous trees and power lines were blown down and the facade was torn off a church.

Hail, Morgan

When: October 24, 5:25 PM CST to 5:30 PM CST
Where: Morgan County, Literberry
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 39.850, -90.200

Flash Flood, Fulton

When: October 24, 5:30 PM CST to 8:30 PM CST
Where: Fulton County, 0.68 mi NNW of Bryant to 0.46 mi WSW of Bryant
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 40.479, -90.084

Water was flowing across Route 100 around Bryant.

Thunderstorm Wind, Cass

When: October 24, 5:34 PM CST to 5:39 PM CST
Where: Cass County, 1.31 mi NE of Ashland
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 39.892, -90.001

A tree was blown onto IL 125 near downtown Ashland.

Hail, Menard

When: October 24, 5:45 PM CST to 5:50 PM CST
Where: Menard County, 2 mi SE of Petersburg
Measured: 1 in hail
Reported by: Public
Coordinates: 39.999, -89.823

Thunderstorm Wind, Menard

When: October 24, 5:47 PM CST to 5:52 PM CST
Where: Menard County, 2 mi S of Petersburg
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 39.991, -89.850

Power lines were blown down.

Flash Flood, Schuyler

When: October 24, 5:50 PM CST to 8:50 PM CST
Where: Schuyler County, 4.18 mi N of Rushville to 2.79 mi NNE of Rushville
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 40.180, -90.560

A vehicle was swept off the road by flood waters about 4 miles north of Rushville, leading to a water rescue of the driver.

Flood, Cass

When: October 24, 5:54 PM CST to 8:54 PM CST
Where: Cass County, 2.53 mi WNW of Virginia to 2.44 mi NNW of Virginia
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 39.970, -90.260

Water was flowing across the roadway northwest of Virginia.

Thunderstorm Wind, Sangamon

When: October 24, 6:04 PM CST to 6:09 PM CST
Where: Sangamon County, 0.87 mi NW of Sherman
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 39.890, -89.610

A tree was blown down.

Thunderstorm Wind, Christian

When: October 24, 8:45 PM CST to 8:50 PM CST
Where: Christian County, 2.11 mi NE of Clarksdale
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 39.500, -89.340

A machine shed was destroyed and a small garage was damaged.

Thunderstorm Wind, Christian

When: October 24, 9:00 PM CST to 9:05 PM CST
Where: Christian County, 2 mi W of Moweaqua
Measured: 52 kt (60 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 39.620, -89.058

A tree was blown onto the roadway west of Moweaqua.

Thunderstorm Wind, Piatt

When: October 24, 9:25 PM CST to 9:30 PM CST
Where: Piatt County, Monticello
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.030, -88.570

A tree was blown onto a house.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

Every storm in Illinois in 2021 Every state in 2021 This day in weather history Warnings in Illinois, October 2021

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: 988075, 988077, 988084, 988076, 988079, 988073, 988070, 988083, 988074, 988085, 988071, 988072, 988078, 988081, 988080, 988082.