Flash Flood and Hail in Illinois, May 7, 2023

Name: Flash Flood and Hail in Illinois, May 7, 2023
Start: 2023-05-07T13:59
End: 2023-05-07T22:50
Location: Illinois

May 7, 2023 · NWS ILX · 67 events in 10 counties and zones

Where it happened

Every event with a place to put it; 4 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: $2,000
Crop damage: $2,000
Events: 67

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.

An outflow boundary from convection that occurred during the early morning served as the focusing mechanism for additional severe thunderstorm development during the afternoon and evening of May 7th. The storms initially focused along a Macomb...to Springfield...to Mount Vernon line and were very slow-moving in nature. Due to a feed of highly unstable air characterized by CAPE values in excess of 3000J/kg, vigorous updrafts quickly developed and supported giant hail. Hailstones as large as 3.25 inches in diameter were reported in the town of Chatham in Sangamon County, causing significant damage to homes and vehicles. Numerous other thunderstorm cells produced hail larger than quarters, with the slow-movement of the cells causing some locations to report hail lasting for greater than 30 minutes. As storms merged into a large cluster, the severe weather threat temporarily waned: however, flash flooding developed across southern portions of Sangamon and Christian counties as rainfall amounts of 4 to 6 inches were common across this area. By early evening, a line of thunderstorms developed further north along a cold front across eastern Iowa into northern Illinois. As the line sagged southward, damaging wind gusts of 60 to 70mph produced scattered wind damage along and north of a Canton to Bloomington line.

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 May 7, 1:52 PM CST, 7 minutes earlier.

Area forecast discussion, May 7, 1:52 PM CST, 7 minutes before

Area Forecast Discussion...Updated
National Weather Service Lincoln IL
252 PM CDT Sun May 7 2023

.MESOSCALE DISCUSSION...
Issued at 251 PM CDT Sun May 7 2023

Convective initiation is ongoing mid afternoon within an area of
low level convergence that stretches from just south of
Springfield NW across Rushville in Schuyler County. Storms will
form initially within this corridor then move ENE at about 20 to
30 mph. SPC Mesoanalysis indicates a corridor of strong MLCAPE of
3000+ J/kg and sufficient deep layer shear of 30-35 kt supportive
of severe thunderstorms. Very steep mid-level lapse rates are
resulting in normalized CAPE values in excess of 0.3 (fat CAPE
profile) conducive for large hail, especially for any supercell
storm mode. Convective allowing models indicate that coverage will
increase over the next couple hours as we enter peak heating
conditions, but should stay scattered. Hydro conditions will also
need to be monitored as slow moving storms will pose some threat
for flooding.

Deubelbeiss

&&

.SHORT TERM...  (Through Late Monday Night)
Issued at 218 PM CDT Sun May 7 2023

As warm and humid air advects into central Illinois from the
west, a remnant outflow boundary from morning convection has moved
to a position from just west of Peoria, to just west of
Springfield, passing just east of the St. Louis Metro and curving
toward Paducah KY. Expect this feature to the the focus for
convective initiation this afternoon/evening. With MLCAPE near
3000 J/kg in the vicinity of this boundary and cloud layer shear
in excess of 40 knots, both large hail and severe wind gusts will
be threats from these cells. As a short wave trough moving through
northern Arkansas approaches, additional forcing for ascent along
with some degree of mid-level cooling will likely lead to fairly
broad multicell storm coverage near the outflow boundary, though
even in this situation stronger updrafts may be capable of large
hail. The expected coverage will likely lead to a growing cold
pool and another southward push of the outflow boundary this
evening, with the severity of this round of thunderstorms waning
by around 8-9 pm.

CAMs depict a second round of convection during the early morning
hours on Monday, with an organized bowing complex of thunderstorms
approaching from southern IA/northern MO. The extent of
afternoon/evening convection across central Illinois will likely
play a large role in the evolution of this complex, with the most
likely outcome at this point being a weakening complex as it moves
into central Illinois after midnight, and/or the complex following
the instability gradient to the southeast with the wind threat
remaining farther west. Even so, the potential for strong to severe
wind gusts in association with this complex will need to be watched,
especially if little convection occurs with the first round across
northern parts of the ILX forecast area. In addition, there is
potential for flash flooding with both rounds of convection,
especially where training storms occur and/or where large amounts of
rain fell early this morning.

In the wake of the early morning convective activity, expect a
fairly quiet period for at least part of the late morning/early
afternoon on Monday before thunderstorms again develop on a cold
front/the remnant outflow boundary from morning convection. MLCAPE
will be closer to 1000 J/kg, with cloud layer shear decreasing to
around 25-30 kt. Though those values are less than today, there will
still be a risk of storms producing large hail and/or severe wind
gusts Monday afternoon/evening. Expect the storms to move out of the
southeast corner of the ILX forecast area by around 9-10pm with the
cold front, with light northeast winds and relatively quiet
conditions for the rest of the overnight hours.

AAT

.LONG TERM...  (Tuesday through Next Sunday)
Issued at 218 PM CDT Sun May 7 2023

Key Messages:

1) Much quieter weather is forecast for Tuesday and Wednesday.

2) Precipitation chances increase once again from Thursday into the
weekend.

A mid-level ridge will amplify over the Midwest from Tuesday into
Wednesday, with minimal precipitation chances and high temperatures
falling back into the mid to upper 70s. Precipitation chances begin
to return on Thursday in association with a closed low moving from
the northern/central Rockies into the upper Midwest. Cluster
analysis shows ensemble member differences regarding the depth and
speed/track of this low, which will eventually affect where and how
much precipitation falls. Even so, this period doesn't look terribly
high-impact at this point, with NBM probability of rainfall > 1" in
the entire Friday-Sunday period only in the 20-30% range. However,
we'll need to keep an eye out for substantial rainfall accumulations
where soils are becoming more saturated. Additionally, the grand
ensemble (GEFS/EC/CMC) mean CAPE in the Fri/Sun period does poke up
between 500-1000 J/kg during the afternoons.

AAT

&&

.AVIATION...  (For the 18z TAFs through 18z Monday Afternoon)
Issued at 1222 PM CDT Sun May 7 2023

VCSH were removed from the first couple hours of the TAFs, as
we've still some time to destabilize thanks to the outflow from
this morning's storms. Ultimately, however, surface heating should
prove sufficient for convection to reignite along that residual
boundary and subsequently propagate northeastward across central
Illinois. In the meantime, south winds around 10-15 (G20) kt will
continue as the bases of scattered to broken stratocumulus rise
out of the MVFR category at CMI and PIA. There's still
considerable timing and locational uncertainty with the storms to
develop late this afternoon and evening, but confidence increases
in widespread thunderstorms later tonight - mainly after around
08z (3 AM). Both rounds of storms will carry the potential for
erratic and intense (locally > 50 kt) surface wind gusts, large
hail, and frequent lightning, but at this time the late afternoon-
evening activity has the greatest potential to be severe.

Bumgardner

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
None.
&&

WFO ILX

Hazardous weather outlook, May 7, 10:37 AM CST, 3 hours 22 minutes before

Hazardous Weather Outlook
National Weather Service Lincoln IL
1137 AM CDT Sun May 7 2023

ILZ027>031-036>038-040>057-061>063-066>068-071>073-081645-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott-
Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
1137 AM CDT Sun May 7 2023

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

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms are expected to develop this afternoon and
persist into early evening. Tonight, a line of storms will likely
develop and push southeast across central IL after midnight. Both
rounds of thunderstorms could be severe with damaging winds and large
hail being the primary hazards. An isolated flash flood risk may
develop if thunderstorms repeatedly affect the same location.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Periods of thunderstorms are expected Monday. Severe storms will
again be possible. Damaging wind gusts and large hail are the
primary hazards. An isolated flash flood risk may develop if
thunderstorms repeatedly affect the same location.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and tonight.

25

In the hours before

Local storm report, May 7, 8:10 AM CST, 5 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
910 AM CDT SUN MAY 7 2023

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

0557 AM     TSTM WND DMG     2 S HIDALGO             39.13N 88.15W
05/07/2023                   JASPER             IL   PUBLIC

            SOCIAL MEDIA PHOTO SHOWS A DOWNED TREE AND
            TWO LARGE BRANCHES. TIME ESTIMATED FROM
            RADAR.

&&

JRB

Local storm report, May 7, 8:14 AM CST, 5 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
914 AM CDT SUN MAY 7 2023

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

0510 AM     TSTM WND GST     COLES COUNTY AIRPORT    39.48N 88.28W
05/07/2023  M66 MPH          COLES              IL   ASOS

&&

JRB

Local storm report, May 7, 8:41 AM CST, 5 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
941 AM CDT SUN MAY 7 2023

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

0700 AM     HEAVY RAIN       1 NNE URBANA            40.13N 88.20W
05/07/2023  M4.00 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-161 URBANA 1.2 NNE.

0700 AM     HEAVY RAIN       LAKE OF THE WOODS       40.20N 88.37W
05/07/2023  M3.17 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-130 MAHOMET 1.8 ENE.

0700 AM     HEAVY RAIN       3 SW BLOOMINGTON        40.45N 89.03W
05/07/2023  M3.05 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-50 BLOOMINGTON 3.8
            SW.

0800 AM     HEAVY RAIN       4 S BONDVILLE           40.05N 88.37W
05/07/2023  M2.86 INCH       CHAMPAIGN          IL   MESONET

            MESONET STATION BNDI2 UI BONDVILLE CHAMPAIGN
            9 SW IL US.

0800 AM     HEAVY RAIN       4 S BONDVILLE           40.05N 88.37W
05/07/2023  M2.86 INCH       CHAMPAIGN          IL   MESONET

            MESONET STATION BNDI2 UI BONDVILLE CHAMPAIGN
            9 SW IL US.

0645 AM     HEAVY RAIN       1 SSW LAKE OF THE WOODS 40.20N 88.37W
05/07/2023  M2.81 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-139 MAHOMET 1.6 E.

0800 AM     HEAVY RAIN       3 NE MANSFIELD          40.24N 88.46W
05/07/2023  M2.80 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-CP-140 MANSFIELD 3.2 NE.

0715 AM     HEAVY RAIN       1 WNW LAKE OF THE WOODS 40.22N 88.39W
05/07/2023  M2.75 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-59 MAHOMET 1.7 NNE.

0715 AM     HEAVY RAIN       1 N LAKE OF THE WOODS   40.23N 88.36W
05/07/2023  M2.70 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-136 MAHOMET 3.0 NE.

0600 AM     HEAVY RAIN       3 SE MANSFIELD          40.17N 88.47W
05/07/2023  M2.69 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-15 3 SE MANSFIELD.

0700 AM     HEAVY RAIN       1 SSW BLOOMINGTON       40.47N 89.00W
05/07/2023  M2.65 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-60 BLOOMINGTON 1.6
            WSW.

0700 AM     HEAVY RAIN       3 WSW MANSFIELD         40.19N 88.56W
05/07/2023  M2.64 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-13 MANSFIELD 3.0 WSW.

0700 AM     HEAVY RAIN       1 S MAHOMET             40.18N 88.40W
05/07/2023  M2.61 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-92 MAHOMET 1.2 S.

0700 AM     HEAVY RAIN       2 WSW CENTRAL ILLINOIS  40.47N 88.95W
05/07/2023  M2.60 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-48 BLOOMINGTON 1.5
            ESE.

0700 AM     HEAVY RAIN       DOWNS                   40.40N 88.87W
05/07/2023  M2.43 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-70 DOWNS.

0600 AM     HEAVY RAIN       2 S CENTRAL ILLINOIS AI 40.45N 88.91W
05/07/2023  M2.42 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-56 BLOOMINGTON 3.9
            ESE.

0835 AM     HEAVY RAIN       2 ESE BLOOMINGTON       40.47N 88.96W
05/07/2023  M2.40 INCH       MCLEAN             IL   MESONET

            MESONET STATION GW0991 BLOOMINGTON.

0600 AM     HEAVY RAIN       NEWMAN                  39.79N 87.98W
05/07/2023  M2.23 INCH       DOUGLAS            IL   COCORAHS

            COCORAHS STATION IL-DG-15 NEWMAN.

0700 AM     HEAVY RAIN       1 SE BEMENT             39.91N 88.56W
05/07/2023  M2.19 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-26 , IL.

0700 AM     HEAVY RAIN       2 SSW FARMER CITY       40.23N 88.66W
05/07/2023  M2.15 INCH       DE WITT            IL   COCORAHS

            COCORAHS STATION IL-DW-5 FARMER CITY 1.5
            SSW.

0700 AM     HEAVY RAIN       LE ROY                  40.34N 88.77W
05/07/2023  M2.13 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-61 LE ROY 0.2 NNW.

0700 AM     HEAVY RAIN       4 N CERRO GORDO         39.95N 88.72W
05/07/2023  M2.01 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-14 4 N CERRO GORDO.

0700 AM     HEAVY RAIN       3 SE CISCO              39.99N 88.69W
05/07/2023  M2.00 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-6 MONTICELLO 6.5 WSW.

0700 AM     HEAVY RAIN       1 SSE NORMAL            40.50N 88.98W
05/07/2023  M1.99 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-63 NORMAL 1.7 SE.

0830 AM     HEAVY RAIN       1 NNE TUSCOLA           39.81N 88.28W
05/07/2023  M1.95 INCH       DOUGLAS            IL   COCORAHS

            COCORAHS STATION IL-DG-11 TUSCOLA 0.6 NNE.

0700 AM     HEAVY RAIN       1 NNW WASHINGTON        40.72N 89.41W
05/07/2023  M1.94 INCH       TAZEWELL           IL   COCORAHS

            COCORAHS STATION IL-TZ-23 WASHINGTON 1.7 NE.

0831 AM     HEAVY RAIN       2 NNW WASHINGTON        40.74N 89.42W
05/07/2023  M1.91 INCH       TAZEWELL           IL   MESONET

            MESONET STATION EW4888 WASHINGTON.

0700 AM     HEAVY RAIN       3 S MANSFIELD           40.17N 88.52W
05/07/2023  M1.90 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-16 3 S MANSFIELD.

0830 AM     HEAVY RAIN       1 NW WASHINGTON         40.71N 89.42W
05/07/2023  M1.90 INCH       TAZEWELL           IL   MESONET

            MESONET STATION FW7110 WASHINGTON.

0524 AM     HEAVY RAIN       3 S ALTA                40.77N 89.64W
05/07/2023  M1.76 INCH       PEORIA             IL   PUBLIC

0700 AM     HEAVY RAIN       1 E PARIS               39.62N 87.67W
05/07/2023  M1.75 INCH       EDGAR              IL   CO-OP OBSERVER

            CO-OP OBSERVER STATION PWWI2 PARIS.

0800 AM     HEAVY RAIN       1 E HEYWORTH            40.31N 88.97W
05/07/2023  M1.75 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-4 HEYWORTH 0.6 E.

0835 AM     HEAVY RAIN       3 E SOUTH PEKIN         40.49N 89.60W
05/07/2023  M1.71 INCH       TAZEWELL           IL   MESONET

            MESONET STATION FW1256 PEKIN.

0700 AM     HEAVY RAIN       NORMAL                  40.51N 88.98W
05/07/2023  M1.70 INCH       MCLEAN             IL   COCORAHS

            COCORAHS STATION IL-MCL-64 NORMAL 1.2 ESE.

0700 AM     HEAVY RAIN       3 WSW FARMER CITY       40.23N 88.69W
05/07/2023  M1.70 INCH       DE WITT            IL   COCORAHS

            COCORAHS STATION IL-DW-8 FARMER CITY 2.7
            WSW.

0700 AM     HEAVY RAIN       2 SE URBANA             40.09N 88.17W
05/07/2023  M1.70 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-135 URBANA 2.2 SE.

0840 AM     HEAVY RAIN       PEORIA HEIGHTS          40.74N 89.58W
05/07/2023  M1.67 INCH       PEORIA             IL   MESONET

            MESONET STATION CW9901 PEORIA HEIGHTS.

0815 AM     HEAVY RAIN       CHAMPAIGN               40.12N 88.26W
05/07/2023  M1.66 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-143 CHAMPAIGN 0.3
            NNE.

0840 AM     HEAVY RAIN       PEORIA HEIGHTS          40.74N 89.58W
05/07/2023  M1.66 INCH       PEORIA             IL   MESONET

            MESONET STATION 9089D PEORIA HEIGHTS.

0700 AM     HEAVY RAIN       2 W GERMANTOWN HILLS    40.77N 89.51W
05/07/2023  M1.65 INCH       WOODFORD           IL   COCORAHS

            COCORAHS STATION IL-WF-28 EAST PEORIA 6.9
            NNE.

0700 AM     HEAVY RAIN       3 NE MILMINE            39.94N 88.62W
05/07/2023  M1.65 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-21 BEMENT 2.9 WNW.

0753 AM     HEAVY RAIN       1 ENE MONTICELLO        40.03N 88.56W
05/07/2023  M1.60 INCH       PIATT              IL   COCORAHS

            COCORAHS STATION IL-PT-20 MONTICELLO 0.4
            ENE.

0830 AM     HEAVY RAIN       5 ENE WAYNESVILLE       40.26N 89.04W
05/07/2023  M1.59 INCH       DE WITT            IL   MESONET

            MESONET STATION DW9761 WAYNESVILLE.

0831 AM     HEAVY RAIN       WASHINGTON              40.70N 89.42W
05/07/2023  M1.59 INCH       TAZEWELL           IL   MESONET

            MESONET STATION EW8799 WASHINGTON.

0830 AM     HEAVY RAIN       1 SSW GERMANTOWN HILLS  40.76N 89.48W
05/07/2023  M1.58 INCH       WOODFORD           IL   MESONET

            MESONET STATION CW8069 GERMANTOWN HILLS.

0700 AM     HEAVY RAIN       1 SW CHAMPAIGN          40.11N 88.28W
05/07/2023  M1.55 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-53 CHAMPAIGN 0.7 SW.

0600 AM     HEAVY RAIN       1 NNE CHAMPAIGN         40.12N 88.26W
05/07/2023  M1.54 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-111 CHAMPAIGN 0.6
            NNE.

0700 AM     HEAVY RAIN       2 NNE HOMER             40.06N 87.95W
05/07/2023  M1.52 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-72 HOMER 2.1 NNE.

0700 AM     HEAVY RAIN       1 W CONGERVILLE         40.61N 89.22W
05/07/2023  M1.51 INCH       WOODFORD           IL   COCORAHS

            COCORAHS STATION IL-WF-16 CONGERVILLE 0.6
            WSW.

0830 AM     HEAVY RAIN       2 WSW CHAMPAIGN         40.10N 88.29W
05/07/2023  M1.51 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-144 CHAMPAIGN 1.5
            WSW.

0800 AM     HEAVY RAIN       2 SSE URBANA            40.08N 88.19W
05/07/2023  M1.50 INCH       CHAMPAIGN          IL   COCORAHS

            COCORAHS STATION IL-CP-108 URBANA 2.3 SSE.

&&

Local storm report, May 7, 10:07 AM CST, 3 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1107 AM CDT SUN MAY 7 2023

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

1200 AM     TSTM WND DMG     BEARDSTOWN              40.01N 90.43W
05/07/2023                   CASS               IL   LAW ENFORCEMENT

            POWERLINES DOWN ON RAILROAD TRACKS. TIME
            ESTIMATED FROM RADAR.

&&

Local storm report, May 7, 10:08 AM CST, 3 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1108 AM CDT SUN MAY 7 2023

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

1218 AM     TSTM WND DMG     CHANDLERVILLE           40.05N 90.15W
05/07/2023                   CASS               IL   LAW ENFORCEMENT

            LARGE TREE LIMBS DOWN. TIME ESTIMATED FROM
            RADAR.

&&

The radar

The Lincoln radar (KILX), 62 km away, was scanning. The volume nearest the first event began at 19:57 UTC.

Open the radar archive at this moment

Event by event

34 thunderstorm wind, 28 hail, 4 high wind, 1 flash flood. Local standard time, as filed.

Hail, Sangamon

When: May 7, 1:59 PM CST to 2:04 PM CST
Where: Sangamon County, Chatham
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 39.670, -89.700

Hail, Sangamon

When: May 7, 2:02 PM CST to 2:07 PM CST
Where: Sangamon County, Chatham
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 39.670, -89.700

Hail, Sangamon

When: May 7, 2:02 PM CST to 2:07 PM CST
Where: Sangamon County, 1.74 mi NE of Chatham
Measured: 0.75 in hail
Reported by: Public
Coordinates: 39.690, -89.680

Hail, Sangamon

When: May 7, 2:04 PM CST to 2:09 PM CST
Where: Sangamon County, 1 mi NE of Chatham
Measured: 1 in hail
Reported by: Public
Coordinates: 39.680, -89.687

Hail, Sangamon

When: May 7, 2:09 PM CST to 2:14 PM CST
Where: Sangamon County, 1 mi E of Auburn
Measured: 1.25 in hail
Reported by: Mesonet
Coordinates: 39.580, -89.731

Hail, Sangamon

When: May 7, 2:10 PM CST to 2:15 PM CST
Where: Sangamon County, Chatham
Measured: 3.25 in hail
Reported by: Mesonet
Coordinates: 39.670, -89.700

Hail, Sangamon

When: May 7, 2:14 PM CST to 2:19 PM CST
Where: Sangamon County, Auburn
Measured: 2 in hail
Reported by: Mesonet
Coordinates: 39.580, -89.750

Hail, Sangamon

When: May 7, 2:15 PM CST to 2:20 PM CST
Where: Sangamon County, Chatham
Measured: 2 in hail
Reported by: Mesonet
Coordinates: 39.670, -89.700

Hail, Sangamon

When: May 7, 2:25 PM CST to 2:30 PM CST
Where: Sangamon County, 2 mi ESE of Chatham
Measured: 1 in hail
Reported by: Public
Coordinates: 39.659, -89.665

Hail, Sangamon

When: May 7, 2:30 PM CST to 2:35 PM CST
Where: Sangamon County, Chatham
Measured: 2.5 in hail
Reported by: Mesonet
Coordinates: 39.670, -89.700

Hail, Sangamon

When: May 7, 2:35 PM CST to 2:40 PM CST
Where: Sangamon County, Divernon
Measured: 2 in hail
Reported by: Mesonet
Coordinates: 39.570, -89.670

Hail, Sangamon

When: May 7, 2:52 PM CST to 2:57 PM CST
Where: Sangamon County, 0.87 mi NE of Cimic
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 39.590, -89.640

Hail, Christian

When: May 7, 3:05 PM CST to 3:10 PM CST
Where: Christian County, 5 mi NW of Palmer
Measured: 1.5 in hail
Reported by: Amateur Radio
Coordinates: 39.501, -89.486

Hail, Fulton

When: May 7, 3:35 PM CST to 3:40 PM CST
Where: Fulton County, Vermont
Measured: 1 in hail
Reported by: Emergency Manager
Coordinates: 40.300, -90.430

Hail, Sangamon

When: May 7, 3:36 PM CST to 3:41 PM CST
Where: Sangamon County, Loami
Measured: 1.5 in hail
Reported by: Public
Coordinates: 39.670, -89.850

Flash Flood, Sangamon

When: May 7, 3:50 PM CST to 6:50 PM CST
Where: Sangamon County, 0.84 mi NNE of Loami to 0.51 mi ENE of Loami
Cause: Heavy Rain
Property damage: $2,000
Crop damage: $2,000
Reported by: Trained Spotter
Coordinates: 39.680, -89.842

Water was flowing across East Loami Road.

Hail, Sangamon

When: May 7, 3:56 PM CST to 4:01 PM CST
Where: Sangamon County, 1.6 mi E of Chatham
Measured: 1 in hail
Reported by: Public
Coordinates: 39.670, -89.670

Hail, Christian

When: May 7, 3:57 PM CST to 4:02 PM CST
Where: Christian County, 5.49 mi SE of Morrisonville
Measured: 2.5 in hail
Reported by: Trained Spotter
Coordinates: 39.370, -89.390

Hail, Sangamon

When: May 7, 3:59 PM CST to 4:04 PM CST
Where: Sangamon County, 3 mi WNW of New Berlin
Measured: 1 in hail
Reported by: Public
Coordinates: 39.737, -89.972

Hail, Fulton

When: May 7, 4:03 PM CST to 4:08 PM CST
Where: Fulton County, Astoria
Measured: 1.25 in hail
Reported by: Public
Coordinates: 40.230, -90.350

Hail, Sangamon

When: May 7, 4:09 PM CST to 4:14 PM CST
Where: Sangamon County, 1.27 mi ENE of New Berlin
Measured: 1 in hail
Reported by: Public
Coordinates: 39.730, -89.900

Hail, Sangamon

When: May 7, 4:13 PM CST to 4:18 PM CST
Where: Sangamon County, Pawnee
Measured: 0.88 in hail
Reported by: Public
Coordinates: 39.580, -89.580

Hail, Sangamon

When: May 7, 5:22 PM CST to 5:27 PM CST
Where: Sangamon County, 1 mi E of Chatham
Measured: 1.25 in hail
Reported by: Public
Coordinates: 39.670, -89.681

Hail, Sangamon

When: May 7, 5:29 PM CST to 5:34 PM CST
Where: Sangamon County, 2 mi E of Chatham
Measured: 0.75 in hail
Reported by: Public
Coordinates: 39.670, -89.662

Hail, Fulton

When: May 7, 6:00 PM CST to 6:05 PM CST
Where: Fulton County, 2 mi N of Marietta
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 40.529, -90.380

Hail, Fulton

When: May 7, 6:00 PM CST to 6:05 PM CST
Where: Fulton County, 4 mi S of Ellisville
Measured: 1 in hail
Reported by: Mesonet
Coordinates: 40.572, -90.300

Hail, Sangamon

When: May 7, 6:05 PM CST to 6:10 PM CST
Where: Sangamon County, Chatham
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 39.670, -89.700

Thunderstorm Wind, Knox

When: May 7, 6:54 PM CST to 6:59 PM CST
Where: Knox County, Abingdon
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 40.800, -90.400

Several 6-inch diameter tree branches were blown down.

Hail, Fulton

When: May 7, 7:08 PM CST to 7:13 PM CST
Where: Fulton County, Lewistown
Measured: 1 in hail
Reported by: Public
Coordinates: 40.400, -90.150

Hail, Fulton

When: May 7, 7:08 PM CST to 7:13 PM CST
Where: Fulton County, Lewistown
Measured: 1 in hail
Reported by: Public
Coordinates: 40.400, -90.150

Thunderstorm Wind, Woodford

When: May 7, 7:15 PM CST to 7:20 PM CST
Where: Woodford County, Spring Bay
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.820, -89.520

Several trees were blown down.

Thunderstorm Wind, Knox

When: May 7, 7:18 PM CST to 7:23 PM CST
Where: Knox County, 1 mi S of Yates City
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.766, -90.020

A few tree branches were blown down.

Thunderstorm Wind, Marshall

When: May 7, 7:20 PM CST to 7:25 PM CST
Where: Marshall County, Henry
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 41.120, -89.370

A few tree branches were blown down.

Thunderstorm Wind, Peoria

When: May 7, 7:20 PM CST to 7:25 PM CST
Where: Peoria County, Elmwood
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.780, -89.970

Tree limbs were blown onto powerlines on the west side of Elmwood.

Thunderstorm Wind, Woodford

When: May 7, 7:24 PM CST to 7:29 PM CST
Where: Woodford County, Metamora
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.780, -89.350

Several trees were blown down.

Thunderstorm Wind, Fulton

When: May 7, 7:25 PM CST to 7:30 PM CST
Where: Fulton County, Canton
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.570, -90.030

Two powerlines were blown down and one power pole was leaning.

Thunderstorm Wind, Peoria

When: May 7, 7:25 PM CST to 7:30 PM CST
Where: Peoria County, Hanna City
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.680, -89.800

A tree was blown onto a house.

Thunderstorm Wind, Peoria

When: May 7, 7:25 PM CST to 7:30 PM CST
Where: Peoria County, Mapleton
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.570, -89.730

A tree was blown over.

Thunderstorm Wind, Fulton

When: May 7, 7:29 PM CST to 7:34 PM CST
Where: Fulton County, 2 mi W of Farmington
Measured: 52 kt (60 mph) estimated gust
Reported by: 911 Call Center
Coordinates: 40.706, -90.037

A tree was blown down across IL-116 west of Farmington.

Thunderstorm Wind, Peoria

When: May 7, 7:36 PM CST to 7:41 PM CST
Where: Peoria County, 1 mi NE of Alta
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.830, -89.617

A few tree branches were blown down.

Thunderstorm Wind, Woodford

When: May 7, 7:45 PM CST to 7:50 PM CST
Where: Woodford County, Spring Bay
Measured: 61 kt (70 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 40.820, -89.520

The siding of a house was damaged.

Thunderstorm Wind, Tazewell

When: May 7, 7:46 PM CST to 7:56 PM CST
Where: Tazewell County, Pekin
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.570, -89.630

Several trees were blown down in Pekin...including one that fell onto a house.

Thunderstorm Wind, Woodford

When: May 7, 7:48 PM CST to 7:53 PM CST
Where: Woodford County, El Paso
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.730, -89.020

Several trees and power lines were blown down in El Paso, resulting in power loss to half the city.

Thunderstorm Wind, Tazewell

When: May 7, 7:48 PM CST to 7:53 PM CST
Where: Tazewell County, Tremont
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.520, -89.480

A large tree branch was blown down, damaging a house.

Thunderstorm Wind, Tazewell

When: May 7, 7:50 PM CST to 7:55 PM CST
Where: Tazewell County, Pekin
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.570, -89.630

A tree was blown onto powerlines.

Thunderstorm Wind, Woodford

When: May 7, 7:50 PM CST to 7:55 PM CST
Where: Woodford County, Metamora
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.780, -89.350

Several large tree limbs were snapped.

Thunderstorm Wind, Tazewell

When: May 7, 7:52 PM CST to 7:57 PM CST
Where: Tazewell County, 1.86 mi SW of Morton
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.598, -89.471

A power pole was leaning at the Colony South Apartments near South Main Street and East Idlewood Street in Morton.

Thunderstorm Wind, Tazewell

When: May 7, 7:55 PM CST to 8:00 PM CST
Where: Tazewell County, Groveland
Measured: 52 kt (60 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 40.600, -89.530

A few tree branches were blown down.

Thunderstorm Wind, Tazewell

When: May 7, 7:55 PM CST to 8:00 PM CST
Where: Tazewell County, 0.41 mi ENE of Washington
Measured: 52 kt (60 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 40.703, -89.393

A large tree branch was blown down on Lynn Street.

Thunderstorm Wind, Tazewell

When: May 7, 7:57 PM CST to 8:02 PM CST
Where: Tazewell County, Morton
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.620, -89.450

Two 2.5-inch diameter tree branches were blown down.

Thunderstorm Wind, Tazewell

When: May 7, 7:58 PM CST to 8:03 PM CST
Where: Tazewell County, 1.08 mi WSW of Valley View
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.676, -89.540

A powerline was blown down on Jay Street in East Peoria.

Thunderstorm Wind, McLean

When: May 7, 8:00 PM CST to 8:01 PM CST
Where: McLean County, 2 mi SE of Hudson
Measured: 53 kt (61 mph) measured gust
Reported by: Mesonet
Coordinates: 40.580, -88.953

Thunderstorm Wind, Woodford

When: May 7, 8:00 PM CST to 8:05 PM CST
Where: Woodford County, 3 mi WSW of Secor
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.713, -89.183

The roof of a barn was damaged and a motorhome was flipped on its side.

Thunderstorm Wind, Tazewell

When: May 7, 8:08 PM CST to 8:13 PM CST
Where: Tazewell County, 0.93 mi NW of Lilly
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.540, -89.292

A power pole caught fire on Winkler Road northeast of Mackinaw.

Thunderstorm Wind, Tazewell

When: May 7, 8:11 PM CST to 8:16 PM CST
Where: Tazewell County, 0.61 mi W of Mackinaw
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.531, -89.362

A powerline was blown down on 2nd Street.

Thunderstorm Wind, Woodford

When: May 7, 8:12 PM CST to 8:17 PM CST
Where: Woodford County, 2 mi SW of El Paso
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.709, -89.047

Part of a barn roof was torn off.

Thunderstorm Wind, Tazewell

When: May 7, 8:14 PM CST to 8:19 PM CST
Where: Tazewell County, North Pekin
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.620, -89.620

A tree was blown down on North Main Street.

Thunderstorm Wind, McLean

When: May 7, 8:19 PM CST to 8:24 PM CST
Where: McLean County, Covel
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.430, -89.100

A large tree branch was snapped.

Thunderstorm Wind, Logan

When: May 7, 8:20 PM CST to 8:25 PM CST
Where: Logan County, Middletown
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.100, -89.580

Powerlines were blown down and a power pole caught fire.

Thunderstorm Wind, McLean

When: May 7, 8:20 PM CST to 8:25 PM CST
Where: McLean County, Normal
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.520, -89.000

A large tree was snapped at the base.

Thunderstorm Wind, McLean

When: May 7, 8:20 PM CST to 8:25 PM CST
Where: McLean County, 1.72 mi WSW of Bloomington
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.470, -89.010

A large tree was blown down.

Thunderstorm Wind, McLean

When: May 7, 8:20 PM CST to 8:25 PM CST
Where: McLean County, Shirley
Measured: 52 kt (60 mph) estimated gust
Reported by: NWS Employee
Coordinates: 40.420, -89.070

Several large tree limbs were blown down.

Thunderstorm Wind, Tazewell

When: May 7, 8:23 PM CST to 8:28 PM CST
Where: Tazewell County, 0.75 mi WNW of Mackinaw
Measured: 52 kt (60 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 40.536, -89.362

A tree was blown across the road at the intersection of South Tazewell Street and West Madison Street.

High Wind, Peoria

When: May 7, 9:30 PM CST to 9:35 PM CST
Where: Peoria forecast zone
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.788, -89.760 (the zone’s center; the record gives no point)

Several trees were damaged near Bradley University due to winds gusting to around 60mph in the wake of a line of thunderstorms.

High Wind, Tazewell

When: May 7, 9:45 PM CST to 9:50 PM CST
Where: Tazewell forecast zone
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.508, -89.513 (the zone’s center; the record gives no point)

A tree was blown down at the intersection of South Creve Coeur Avenue and Morton Street in Creve Coeur due to winds gusting to around 60mph in the wake of a line of thunderstorms.

High Wind, Tazewell

When: May 7, 9:45 PM CST to 9:50 PM CST
Where: Tazewell forecast zone
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 40.508, -89.513 (the zone’s center; the record gives no point)

The roof of an apartment complex 2 miles southeast of Pekin was damaged due to winds gusting to around 60mph in the wake of a line of thunderstorms.

High Wind, Logan

When: May 7, 10:45 PM CST to 10:50 PM CST
Where: Logan forecast zone
Measured: 52 kt (60 mph) estimated gust
Reported by: NWS Employee
Coordinates: 40.125, -89.367 (the zone’s center; the record gives no point)

Several large tree branches were blown down across Lincoln due to winds gusting to around 60mph in the wake of a line of thunderstorms.

What these are

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.
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.
High Wind: Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.

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

The same day elsewhere

Every storm in Illinois in 2023 Every state in 2023 This day in weather history Warnings in Illinois, May 2023

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: 1095145, 1095146, 1095147, 1095148, 1095149, 1095150, 1095151, 1095152, 1095153, 1095155, 1095156, 1095157, 1095158, 1095160, 1095161, 1095178, 1095162, 1095163, 1095165, 1095166, 1095167, 1095168, 1095173, 1095172, 1095170, 1095175, 1095171, 1095189, 1095176, 1095585, 1095213, 1095193, 1095194, 1095224, 1095214, 1095185, 1095223, 1095225, 1095184, 1095188, and more.