Illinois, 2023

Tornadoes and Flooding in Illinois, March 31, 2023

March 31, 2023 · NWS LOT · 89 events in 15 counties and zones

During the afternoon and evening of the 31st, a wave of severe thunderstorms produced numerous tornadoes, severe hail, extensive wind damage, and localized flooding across northern and northeastern Illinois. A total of 37 tornadoes were confirmed across the state.

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
1
Injuries
40
Property damage
None recorded
Crop damage
None recorded
Events
89

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 LOT wrote it up.

During the afternoon and evening of the 31st, a wave of severe thunderstorms produced numerous tornadoes, severe hail, extensive wind damage, and localized flooding across northern and northeastern Illinois. A total of 37 tornadoes were confirmed across the state. The NWS Chicago office tied a record for the most tornadoes to occur in a single calendar day within the office's county warning area with 22, 17 of which occurred in Illinois. One EF-2 tornado occurred in south-central Lee County and two others in northwest Indiana. Some of the more notable damage includes multiple semi trucks blown over, a garage that had been completely destroyed southeast of Amboy, and the partial roof collapse of the Apollo Theatre in Belvidere which unfortunately resulted in one fatality and 40 injuries.

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 Chicago, IL wrote its last area forecast discussion before the first event at Mar 31, 2:23 PM CST, 19 minutes earlier.

Area forecast discussion, Mar 31, 2:23 PM CST, 19 minutes before
Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
323 PM CDT Fri Mar 31 2023

.MESOSCALE DISCUSSION...
Issued at 249 PM CDT Fri Mar 31 2023

The main concerns through late afternoon are the initial area of
storms from the Quad Cities through the Peoria area and any storms
that develop southeast of there. The primary threat with these is
hail with a close second being a tornado threat if they can
become anchored in the low-levels. A Tornado Watch has been issued
until 10 PM for the entire area for these storms as well as the
second line of storms which as of 245 PM extends from Des Moines,
Iowa to near Columbia, Missouri.

A low amplitude short wave and associated speed maximum continue
to move northeast from the far western Illinois area and was the
impetus for the convective cluster, which is becoming more self-
sustaining. This is overriding a subtle secondary warm front that
was diabatically enhanced earlier. Backed surface and low-level flow
has been noted at central Illinois sites and the ILX VWP, and the
supercell characteristics of the storm in the Peoria area have
continued to mature. It also has become more rooted in the
boundary layer, a sign that synoptic scale lift is starting to
quickly wear away at a pronounced cap sampled on the ILX 18Z
sounding. Surface temperatures and dew points are similar ahead of
the storm into the southwestern and southern CWA. There likely
still is some cap per visible satellite imagery an hour ago that
showed transverse waves in the low clouds before the anvil shield
spread over. But again that is likely fading quickly, so will need
to watch this southern part of the cluster in particular for a
tornado threat. The large hail environment is noteworthy with
steep elevated lapse rates within the CAPE growth layer with much
of buoyancy above the-10C level and an increasing overall mass to
that supercell.

So through 4 PM, southern LaSalle and Livingston Counties will be
the most at risk, and potentially Ford County too. Parameter
space should favor these storms to continue toward the south
Chicago metro toward Kankakee in that 4-5 PM area. Persons in
those counties show remain extra vigilant. To the north for
northern LaSalle County toward Dixon and Rockford, the Quad
Cities area storm cells will likely become closer to boundary
layer rooted but still uncertain if conditions will destabilize in
time. There definitely will be a hail threat with these.

The second line of storms to the west from central Iowa to central
Missouri looks to arrive into the western forecast area after 6-7
PM. Oblique shear orientation to the frontal boundary (which will
almost be a pre-frontal dryline) looks to support a broken line of
storms that would have an all hazards threat, but more so wind and
a tornado risk with a low-level warm sector ahead of it remaining
unstable after dark. There may be some "imprint" of these
afternoon storms, but synoptic scale forcing will probably be
strong enough to overcome that.

MTF

&&

.SHORT TERM...
Issued at 322 PM CDT Fri Mar 31 2023

Through Saturday night...

For details on thunderstorm trends through the remainder of this
afternoon and evening, see the latest mesoscale forecast
discussion above.

990 mb surface low over central IA at mid-afternoon is expected
to continue to deepen slightly as it moves east-northeast across
south central WI and central LM to northern lower MI through
Saturday morning. In the process, a sharp cold front will push
quickly across the forecast area this evening. as will an initial
strong mid-level vort. Strong subsidence and drying is expected
behind these features during the late evening and early overnight
hours, with a quick end to thunderstorms and showers. The main
concern during this period, is for strong west-southwest winds
behind the front, with a combination of strong surface pressure
rises and a deepening boundary layer within a low-level cold
advection regime characterized by steep low level lapse rates
supporting wind gusts in the 40-45 kt (wind advisory) range. While
areas along/south of the I-80 corridor would appear to have the
better potential for prolonged advisory criteria winds overnight
into Saturday morning, latest guidance soundings suggest at least
some potential to tap into 40+ kt gusts for a time overnight as
well. Based on this have expanded our wind advisory north to the
IL/WI state line (though with a later 10 pm start time behind the
cold front). All wind headlines will continue through 1 pm
Saturday, with northwest winds gradually diminishing through the
afternoon and evening.

A secondary stout mid-level vort is progged to wrap eastward
across the forecast area early Saturday, coincident with a
secondary surface trough and renewed advection of low-level
moisture from the northwest. Along with the steep low-level lapse
rates, this would support rain/snow showers. Surface temps are
forecast to settle into the mid-upper 30s during this time, which
may support brief all-snow showers (especially near the IL/WI
border) and some spotty minor accums. Warm ground temps and air
temps trending back up toward 40 degree should melt anything which
might accumulate by afternoon. Surface high pressure then builds
east into the area Saturday evening, with diminishing winds and
clearing skies.

Ratzer

&&

.LONG TERM...
Issued at 322 PM CDT Fri Mar 31 2023

Sunday through Friday...

No significant changes to previous extended forecast thinking.

Primary forecast concern is the potential for another period of
severe thunderstorms Tuesday into Wednesday along with another
period of possible wind advisory level winds.

A frontal boundary will become stationary across the southern cwa,
or just south of the area Monday night with chance of showers and
thunderstorms returning Monday night. This frontal boundary is
expected to lift back north as a warm front on Tuesday as low
pressure deepens moving from the central Plains to the upper
midwest. A strong cold front is expected to move across the area
Tuesday night and this time period would be most favored for the
potential for severe weather as shown in the days 4-8 outlook from
SPC. Strong westerly winds are then possible Wednesday, possibly
into advisory level.

Weather does look to quiet down late Thursday into Friday, with
global deterministic and ensemble runs depicting broad surface
high pressure building across the Midwest.

cms/Ratzer

&&

.AVIATION...
For the 18Z TAFs...

Aviation Forecast Concerns:

* Two periods of strong to possibly severe thunderstorms likely
  from mid-afternoon through mid-evening. Some severe storms
  possible.

* Southwest winds may turn south-southeasterly ahead of storms
  later this afternoon, with some convective disruption to winds
  possible through early evening.

* West-southwest winds increase with gusts 35-40 kts overnight
  into early Saturday, then becoming northwest and gradually
  decreasing Saturday afternoon.

* Period of rain/snow showers Saturday morning/midday.

Deep surface low pressure over western IA at midday will continue
to deepen as it moves east-northeast across southern WI through
this evening. As this occurs, a warm front will lift across the
terminals late this afternoon, then a strong cold front will push
east across the forecast area this evening. Until that time, the
terminals will reside in a moist and unstable warm sector, with
temperatures approaching 70 degrees. Two periods of thunderstorms
appear poised to affect the region, the first after about 3 pm
associated with a mid-level disturbance approaching from the
southwest, and the second roughly 7-9 pm or so ahead of the
aforementioned cold front. Coverage in the first round is a little
less certain than the second round, which looks to be more of a
solid pre-frontal convective line. Both of these periods may
feature strong to severe storms. MVFR to brief IFR conditions are
possible.

In the wake of the cold frontal passage mid-evening, winds will
shift west-southwest and strengthen, with gusts 35-40 kts
possible. Strongest winds may actually occur during the pre-dawn
and early Saturday morning hours, before shifting northwest mid-
morning and eventually gradually diminishing in the afternoon.

VFR conditions are expected behind the cold front tonight, before
the primary upper trough axis shifts across the area late tonight
and Saturday. Scattered rain/snow showers are likely with MVFR
ceilings, and occasional MVFR visibilities possible. Precip threat
should quickly decrease early Saturday afternoon.

Ratzer

&&

.MARINE...
Issued at 322 PM CDT Fri Mar 31 2023

No significant changes to previous marine discussion.

A strong area of low pressure will track north of the region this
afternoon and tonight. While some occasional gales are possible
this morning, more frequent gales are expected to develop this
evening, and especially late tonight through Saturday afternoon.
The strongest winds are currently expected across the Indiana
nearshore waters where gales to 45 kt are possible. Winds will
ease quickly Saturday evening, but lingering large wave action
will necessitate a follow-up Small Craft Advisory into early
Sunday morning.

Carlaw

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Wind Advisory...ILZ019-ILZ021-ILZ023-ILZ032-ILZ033-ILZ039-ILZ107-
     ILZ108 until 1 PM Saturday.

     Wind Advisory...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-ILZ011-
     ILZ012-ILZ013-ILZ020-ILZ103-ILZ104-ILZ105-ILZ106...10 PM
     Friday to 1 PM Saturday.

IN...Wind Advisory...INZ001-INZ002...10 PM Friday to 1 PM Saturday.

     Wind Advisory...INZ010-INZ011-INZ019 until 1 PM Saturday.

LM...Gale Warning...LMZ740-LMZ741-LMZ742-LMZ743-LMZ744-LMZ745...10 PM
     Friday to 7 PM Saturday.

     Small Craft Advisory...nearshore waters until 10 PM Friday.

&&

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Hazardous weather outlook, Mar 31, 11:15 AM CST, 3 hours 27 minutes before
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1215 PM CDT Fri Mar 31 2023

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-011715-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1215 PM CDT Fri Mar 31 2023 /115 PM EDT Fri Mar 31 2023/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Significant Thunderstorm Risk...with an associated:
     Elevated Tornado Risk.
     Elevated Hail Risk...up to golf ball size.
     Significant Damaging Wind Risk...up to 80 mph.
  Limited Flooding Risk.
  Elevated Non Thunderstorm Wind Risk.

DISCUSSION...

A robust early spring storm system will track across the
Midwest and into the Great Lakes region today. A significant
severe threat exists across the area this afternoon through mid
evening. All severe weather hazards are possible, including
significant damaging winds and strong tornadoes. Stay up to date
with the latest forecast information.

A period of strong non-thunderstorm winds to around 50 mph is
expected late this afternoon and into Saturday morning. At this
time, the strongest winds are favored to be south of I-80 this
afternoon and near the Wisconsin line late tonight.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Elevated Non Thunderstorm Wind Risk in the morning south of I-80.
  Elevated Lakeshore Flood Risk for northwest Indiana.
Monday...
  Limited Thunderstorm Risk.
Tuesday...
  Limited Severe Thunderstorm Risk.
  Limited Non Thunderstorm Wind Risk.
Wednesday...
  Limited Non Thunderstorm Wind Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotters will likely be needed this afternoon and evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the northeast at 50 mph this afternoon, and to
  the east at 65 mph this evening.

LMZ740>745-011715-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
1215 PM CDT Fri Mar 31 2023

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Gale force winds and or very hazardous waves.
  Significant Thunderstorm Risk...with an associated:
     Limited waterspout risk.
     Limited hail risk...up to half dollar size.
     Elevated thunderstorm wind gust risk...up to 70 knots.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Gale force winds and very hazardous waves are likely.
Sunday...
  Hazardous conditions for small craft are likely.
Tuesday...
  Hazardous conditions for small craft are likely.
  Limited Severe Thunderstorm Risk.
Wednesday...
  Gale force winds and very hazardous waves are likely.
Thursday...
  Hazardous conditions for small craft are likely.

Yack

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The radar

The Chicago radar (KLOT), 84 km away, was scanning. The volume nearest the first event began at 20:43 UTC.

Open the radar archive at this moment

Event by event

56 thunderstorm wind, 21 tornado, 8 flood, 4 hail. Local standard time, as filed.

Hail, Livingston

When
March 31, 2:42 PM CST
Where
Livingston County, 0.29 mi WSW of South Streator
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
41.098, -88.835

Tornado, Livingston

When
March 31, 3:05 PM CST to 3:06 PM CST
Where
Livingston County, 2 mi NNE of Rowe to 2.03 mi NNE of Rowe
Rating
EFU
Path length
0.03 mi
Path width
15 yd
Reported by
NWS Storm Survey
Coordinates
40.956, -88.653

A remote NWS survey found an EF-U tornado had touched down near the community of Rowe, Illinois. It's estimated that the tornado had a total lifespan of only several seconds. Aside from kicking up some dirt, the tornado had produced no damage.

Hail, Kankakee

When
March 31, 3:13 PM CST
Where
Kankakee County, 0.85 mi SE of West Kankakee
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
41.111, -87.879

Hail, Will

When
March 31, 3:15 PM CST
Where
Will County, 2.36 mi SSW of Millsdale
Measured
1 in hail
Reported by
Public
Coordinates
41.401, -88.193

A report of quarter size hail was received from mPING.

Hail, Cook

When
March 31, 3:46 PM CST
Where
Cook County, 1.66 mi WNW of Matteson
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
41.510, -87.739

Flood, Cook

When
March 31, 4:20 PM CST to 10:00 PM CST
Where
Cook County, 0.68 mi ENE of Oak Forest to 0.8 mi ENE of Oak Forest
Cause
Heavy Rain
Reported by
Public
Coordinates
41.604, -87.738

One foot of standing water was reported near the intersection of 159th St and Cicero Ave.

Flood, Du Page

When
March 31, 5:00 PM CST to 10:00 PM CST
Where
Du Page County, 1.27 mi SE of Northwoods to 1.43 mi WNW of Glen Ellyn
Cause
Heavy Rain
Reported by
Public
Coordinates
41.888, -88.152

A photo received showed one to two feet of standing water on a residential street and on front yards. The location at which the photo was taken was not specified.

Flood, Du Page

When
March 31, 5:00 PM CST to 10:00 PM CST
Where
Du Page County, 1.12 mi SSE of Itasca to 1.01 mi SSE of Itasca
Cause
Heavy Rain
Reported by
Social Media
Coordinates
41.955, -88.003

A photo shared on Twitter showed flood waters covering a residential street near Mill Rd and Arlene Dr.

Tornado, Lee

When
March 31, 5:55 PM CST to 6:01 PM CST
Where
Lee County, 9.58 mi SSW of Harmon to 6.46 mi SSE of Harmon
Rating
EF1
Path length
6.06 mi
Path width
150 yd
Reported by
NWS Storm Survey
Coordinates
41.596, -89.632

This tornado began just south of Illinois Highway 92 in northwest Bureau County. It then tracked through far southeast Whiteside County within 3 miles of the town of Deer Grove. This tornado would continue for 6 additional miles into southwest Lee County, where it dissipated near Maytown Road and Atkinson Road. The damage from this tornado included numerous heavily damaged outbuildings, several snapped power poles, and dozens of trees. The worst damage was to a large farmstead outbuilding along the Whiteside-Bureau county line with the roof and two of the four walls destroyed and debris slung well into a field.

Tornado, Ogle

When
March 31, 5:56 PM CST to 6:01 PM CST
Where
Ogle County, 1.99 mi WSW of Harper to 2.37 mi W of Baileyville
Rating
EF1
Path length
5.26 mi
Path width
200 yd
Continued into
Stephenson, Il (DVN)
Reported by
NWS Storm Survey
Coordinates
42.130, -89.686

This tornado began southeast of Lanark in Carroll County near Harvest Rd west of Shannon Rte. It tracked to the northeast crossing into rural Ogle County at N Brookville Rd north of W White Oak Rd. Shortly before dissipating, the storm crossed into Stephenson County at N Mt. Vernon Rd. It then lifted as it approached Florence Rd west of IL Rt. 26 S. Extensive damage was done to several farm buildings and a few trees were downed as well.

Flood, Cook

When
March 31, 6:00 PM CST to 10:00 PM CST
Where
Cook County, 0.02 mi WSW of Kenilworth to 0.01 mi SSE of Kenilworth
Cause
Heavy Rain
Reported by
Local Official
Coordinates
42.090, -87.720

A report was received of at least one foot of water on Green Bay Road near Melrose Avenue and Roger Avenue.

Flood, Cook

When
March 31, 6:00 PM CST to 10:00 PM CST
Where
Cook County, 1.06 mi WSW of Golf to 0.99 mi ESE of Golf
Cause
Heavy Rain
Reported by
Public
Coordinates
42.055, -87.799

Numerous reports were received of flooded roadways in Morton Grove.

Flood, Cook

When
March 31, 6:00 PM CST to 10:00 PM CST
Where
Cook County, 0.93 mi ESE of Northfield to 0.98 mi ESE of Northfield
Cause
Heavy Rain
Reported by
Public
Coordinates
42.094, -87.763

Traffic was stopped at the underpass at I-94 and Winnetka Rd due to flooding.

Flood, Cook

When
March 31, 6:00 PM CST to 10:00 PM CST
Where
Cook County, 0.9 mi NNW of Des Plaines to 1.43 mi W of Morton Grove
Cause
Heavy Rain
Reported by
Public
Coordinates
42.041, -87.889

Numerous reports were received of flooded roadways in Des Plaines and Park Ridge.

Tornado, Lee

When
March 31, 6:08 PM CST to 6:18 PM CST
Where
Lee County, 1.18 mi W of Woodhaven Lakes to 2.92 mi NNW of West Brooklyn
Rating
EF2
Path length
9.29 mi
Path width
350 yd
Reported by
NWS Storm Survey
Coordinates
41.651, -89.313

The tornado touched down in the Woodhaven Lakes campground south of Amboy. There, multiple campers were damaged by the tornado including two that were rolled. Farther along its northeastward track, two trees had fallen onto a home destroying it. The tornado appeared to have reached its maximum intensity with wind speeds estimated at 115 mph shortly after crossing US Hwy 52 where it destroyed a large garage and snapped several trees at their trunks. Several dozen other large trees were snapped and many branches sheared off along its path. Toward the end of its lifespan, the tornado also did minor damage to an outbuilding before lifting near Butler Hill Rd north of West Brooklyn.

Thunderstorm Wind, Lee

When
March 31, 6:11 PM CST
Where
Lee County, 2.68 mi NNW of Maytown
Measured
61 kt (70 mph) estimated gust
Reported by
Social Media
Coordinates
41.663, -89.397

A photo shared by the public via social media shows a barn that had been destroyed. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Lee

When
March 31, 6:11 PM CST
Where
Lee County, 0.68 mi W of Amboy
Measured
61 kt (70 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.720, -89.343

A grain bin was damaged at Maplehurst Farms west of Amboy. Wind magnitude and time were estimated based on radar.

Tornado, Lee

When
March 31, 6:13 PM CST to 6:21 PM CST
Where
Lee County, 0.82 mi S of Sublette to 1.03 mi NW of The Burg
Rating
EF1
Path length
7.75 mi
Path width
75 yd
Reported by
NWS Storm Survey
Coordinates
41.638, -89.229

This tornado developed just south of the town center of Sublette snapping multiple utility poles as it crossed US Rt. 52. The tornado strengthened as it progressed into the town of West Brooklyn. There, it downed several large trees, folded an approximately 120-foot tall tower, and tore the roof off of a bank in downtown West Brooklyn. A wooden beam from the roof of the bank impaled a nearby garage roof to the north-northeast of the bank. The tornado then lifted north of Shaw Rd just west of Carnahan Rd just over 2 miles northeast of West Brooklyn.

Thunderstorm Wind, La Salle

When
March 31, 6:18 PM CST
Where
La Salle County, 0.77 mi SSW of Mendota
Measured
61 kt (70 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.540, -89.127

Five mobile homes were reported to have their roofs peeled off. Additionally, heavy duty 6-inch girders were tossed across the street into a parking lot. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, La Salle

When
March 31, 6:21 PM CST
Where
La Salle County, 0.11 mi E of Mendota
Measured
61 kt (70 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.550, -89.118

Several trees and power lines were reported down in Mendota. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, La Salle

When
March 31, 6:21 PM CST
Where
La Salle County, 0.2 mi SSE of Peru
Measured
52 kt (60 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.327, -89.129

Power poles were downed near the LaSalle-Bureau county line in Peru. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, La Salle

When
March 31, 6:22 PM CST
Where
La Salle County, 2.8 mi NW of Meriden
Measured
61 kt (70 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.603, -89.061

Two semi trucks were reported to had blown over on I-39 northeast of Mendota. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, La Salle

When
March 31, 6:22 PM CST
Where
La Salle County, 0.89 mi N of La Salle
Measured
52 kt (60 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.343, -89.098

A large tree with a diameter of around two feet snapped on Maple Road in La Salle. Wind magnitude and time were estimated based on radar.

Tornado, Ogle

When
March 31, 6:24 PM CST to 6:32 PM CST
Where
Ogle County, 2.41 mi NNW of White Rock to 3.59 mi N of Monroe Center
Rating
EF1
Path length
8.97 mi
Path width
600 yd
Continued into
Winnebago, Il (LOT)
Reported by
NWS Storm Survey
Coordinates
42.072, -89.148

The tornado touched down about 3 miles southwest of Davis Junction. It then went on to track trough the Davis Junction town center where it did mostly minor, EF-0 damage. EF-1 damage was done to a single family home on the north side of town. This tornado then crossed into Winnebago County south of Rockford, and eventually on into Boone County where it would later cause the partial roof collapse of the Apollo Theatre in Belvidere resulting in one fatality and 40 injuries.

Thunderstorm Wind, Lee

When
March 31, 6:24 PM CST
Where
Lee County, 3.14 mi N of Twelvemile Corner
Measured
61 kt (70 mph) estimated gust
Reported by
Social Media
Coordinates
41.805, -89.084

A photo shared via social media showed two grain bins heavily damaged along with five large trees either with their trunks snapped or toppled/uprooted. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Lee

When
March 31, 6:25 PM CST
Where
Lee County, 0.41 mi S of Amboy
Measured
58 kt (67 mph) measured gust
Reported by
Trained Spotter
Coordinates
41.714, -89.329

Thunderstorm Wind, La Salle

When
March 31, 6:28 PM CST
Where
La Salle County, 6.07 mi SSW of Rollo
Measured
56 kt (64 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.589, -88.924

Several trees were reported down in Earlville. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, De Kalb

When
March 31, 6:31 PM CST
Where
De Kalb County, 1.73 mi E of Lee
Measured
61 kt (70 mph) estimated gust
Reported by
Public
Coordinates
41.790, -88.906

Several outbuildings were damaged or destroyed in the Lee and Shabbona areas. Several trees were also uprooted. Wind magnitude and time were estimated based on radar.

Tornado, Winnebago

When
March 31, 6:31 PM CST to 6:38 PM CST
Where
Winnebago County, 0.83 mi S of Rockford to 1.89 mi SSE of Harlem
Rating
EF1
Path length
5.79 mi
Path width
300 yd
Reported by
NWS Storm Survey
Coordinates
42.258, -89.080

This tornado touched down about 1 mile southeast of downtown Rockford southwest of the intersection of Railroad Ave and 8th St. It then tracked northeastward through the city of Rockford for about 7 minutes and just under 6 miles before lifting as it approached the intersection of Riverside Blvd and Mulford Rd. The tornado caused widespread tree damage, which was most concentrated at and near the Sinnissippi Golf Course, where the tornado reached its peak width of about 300 yards. Most structural damage was caused by trees that were uprooted and fell onto houses, but the tornado itself did also cause mostly minor roof damage to multiple homes.

Tornado, Winnebago

When
March 31, 6:32 PM CST to 6:37 PM CST
Where
Winnebago County, 3.68 mi ESE of New Milford to 2.65 mi S of Cherry Valley
Rating
EF1
Path length
4.53 mi
Path width
600 yd
Continued into
Boone, Il (LOT)
Reported by
NWS Storm Survey
Coordinates
42.151, -89.009

This tornado had crossed into Winnebago County from Ogle County in the far south side of Rockford along Edson Rd just west of S Mulford Rd. While in Winnebago County, the tornado caused generally EF-0 damage to farmland. The tornado had done mostly EF-0 damage while in Ogle County with one instance of EF-1 damage done to a home. The storm then crossed into Boone County south of Cherry Valley where it would later cause the partial roof collapse of the Apollo Theatre in Belvidere resulting in one fatality and 40 injuries.

Tornado, Winnebago

When
March 31, 6:33 PM CST to 6:42 PM CST
Where
Winnebago County, 2.84 mi W of Loves Park to 0.99 mi NNE of Roscoe
Rating
EF1
Path length
8.63 mi
Path width
300 yd
Reported by
NWS Storm Survey
Coordinates
42.324, -89.105

This tornado began southwest of the intersection of Elmwood Rd and Rockton Ave on the north side of Rockford and tracked northeastward for almost 9 miles, straddling the Rock River as it tracked through the west side of Machesney Park before weakening and lifting over Roscoe. This tornado caused damage to several trees and outbuildings, as well as multiple homes, which primarily suffered roof damage. A couple of homes had entire portions of their roofs removed where the tornado was at its peak intensity and featured 90-100 mph winds.

Tornado, Boone

When
March 31, 6:37 PM CST to 6:50 PM CST
Where
Boone County, 2.57 mi NW of Irene to 4.74 mi E of Poplar Grove Airport
Rating
EF1
Path length
14.01 mi
Path width
600 yd
Deaths
1 direct, 0 indirect
Injuries
40 direct, 0 indirect
Reported by
NWS Storm Survey
Coordinates
42.192, -88.940

This tornado crossed into Boone County south of Cherry Valley from Winnebago County. The tornado, which originated in Ogle County, traversed northeastward doing minor damage to farms. As it moved through the town of Belvidere, the storm produced multiple instances of damage to businesses, homes, and trees. Included in this is the partial roof collapse of the Apollo Theatre downtown which resulted in one fatality and 40 injuries. From there, the tornado would travel another 7 miles doing additional damage to trees before lifting near Orth Rd just west of the Boone-McHenry county line.

Thunderstorm Wind, Lee

When
March 31, 6:38 PM CST
Where
Lee County, 0.88 mi NNE of Steward
Measured
61 kt (70 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.861, -89.011

Photo shared shows a semi truck blown over to the east on I-39 just north of the Prairie Road exit. Wind gust was estimated from trained spotter. Time was estimated based on radar.

Thunderstorm Wind, Lee

When
March 31, 6:39 PM CST
Where
Lee County, 3.86 mi SSW of Paw Paw
Measured
72 kt (83 mph) measured gust
Reported by
Public
Coordinates
41.633, -89.020

A private weather station measured an 83 mph gust north of Meridian.

Thunderstorm Wind, De Kalb

When
March 31, 6:41 PM CST
Where
De Kalb County, 4.6 mi E of Rollo
Measured
65 kt (75 mph) measured gust
Reported by
Public
Coordinates
41.664, -88.791

A private weather station measured a 75 mph gust north of Leland.

Thunderstorm Wind, De Kalb

When
March 31, 6:41 PM CST
Where
De Kalb County, 1.09 mi WNW of Woodlake Landing Airport
Measured
56 kt (64 mph) estimated gust
Reported by
Public
Coordinates
41.646, -88.670

Several trees were blown down and a garage door had been blown in northeast of Somonauk. Wind magnitude and time were estimated based on radar.

Tornado, Boone

When
March 31, 6:44 PM CST to 6:57 PM CST
Where
Boone County, 1.46 mi S of Caledonia to 4.92 mi NE of Blaine
Rating
EF1
Path length
13.54 mi
Path width
150 yd
Continued into
Walworth, Wi (MKX)
Reported by
NWS Storm Survey
Coordinates
42.349, -88.903

This tornado touched down southwest of the village of Caledonia moving through mostly farmland along its northeastward track. The storm destroyed numerous outbuildings, heavily damaged a silo, and caused a grain bin to collapse. In the Candlewick Lake neighborhood southeast of Caledonia, a few homes sustained roof and siding damage. Several trees were also damaged. The tornado then crossed into the village of Sharon in southwestern Walworth County, Wisconsin. The storm would go on for nearly another four miles mostly doing damage to barns and trees before lifting near Town Hall Rd and Chilson Rd.

Thunderstorm Wind, De Kalb

When
March 31, 6:44 PM CST
Where
De Kalb County, 0.54 mi WNW of Hinckley Airfield
Measured
56 kt (64 mph) measured gust
Reported by
Public
Coordinates
41.773, -88.710

A private weather station measured a 64 mph gust east of Waterman.

Thunderstorm Wind, De Kalb

When
March 31, 6:47 PM CST
Where
De Kalb County, 1.04 mi ENE of Dekalb
Measured
64 kt (74 mph) measured gust
Reported by
Trained Spotter
Coordinates
41.937, -88.732

A handheld anemometer measured a 74 mph gust. Tree damage and minor roof damage were also reported.

Thunderstorm Wind, Kane

When
March 31, 6:48 PM CST
Where
Kane County, 1.21 mi ESE of Maple Park
Measured
70 kt (81 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.894, -88.578

Wooden utility poles were found leaning along IL Rt. 38 between Schrader Rd and Howard Rd southeast of Maple Park. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Kane

When
March 31, 6:48 PM CST
Where
Kane County, 1.56 mi ESE of Maple Park
Measured
70 kt (81 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.893, -88.571

Roofing material was blown off of the northwest corner of a barn on IL Rt. 38 at Howard Rd southeast of Maple Park. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Kane

When
March 31, 6:52 PM CST
Where
Kane County, 2.06 mi SSE of Virgil
Measured
70 kt (81 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.924, -88.510

Roofing material was blown off of a barn and blown to the northeast at Francis Rd and Beith Rd northwest of Elburn. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Kane

When
March 31, 6:53 PM CST
Where
Kane County, (Arr) Aurora Municipal Airport
Measured
56 kt (64 mph) measured gust
Reported by
ASOS
Coordinates
41.770, -88.470

Thunderstorm Wind, Kendall

When
March 31, 6:54 PM CST
Where
Kendall County, 1.43 mi NNE of Bristol
Measured
56 kt (64 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.709, -88.420

Strong winds produced damage to multiple trees, blew down a section of a fence, and ripped a few shingles off of a home in the Lakewood Creek neighborhood in west Montgomery. This wind damage immediately preceded the development of an EF-0 tornado that tracked from Montgomery to Aurora.

Tornado, Kendall

When
March 31, 6:55 PM CST to 6:57 PM CST
Where
Kendall County, 2.19 mi WSW of Montgomery to 0.49 mi WNW of Montgomery
Rating
EF0
Path length
1.83 mi
Path width
200 yd
Continued into
Kane, Il (LOT)
Reported by
NWS Storm Survey
Coordinates
41.712, -88.391

The tornado touched down near the intersection of Concord Dr and Columbia Ln in southwestern Montgomery. It produced minor damage to an outbuilding shortly after dropping and to a few trees before crossing into Kane County just a couple of minutes after forming. The storm then continued northeastward through Montgomery damaging mostly trees before lifting on the south side of Aurora.

Tornado, Kane

When
March 31, 6:57 PM CST to 7:01 PM CST
Where
Kane County, 0.66 mi SW of Montgomery to 2.22 mi SE of Aurora
Rating
EF0
Path length
3.77 mi
Path width
200 yd
Reported by
NWS Storm Survey
Coordinates
41.723, -88.359

Just a couple of minutes after touching down in far northern Kendall County, this tornado crossed into Kane County in Montgomery just west of Albright Rd. The tornado had caused minor damage to an outbuilding while still in Kendall County but most of the damage in Kane County was to trees. The tornado lifted on the south side of Aurora near the intersection of Hill Ave and Binder St.

Thunderstorm Wind, Kane

When
March 31, 6:58 PM CST
Where
Kane County, 1.79 mi NE of Prestbury
Measured
65 kt (75 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.795, -88.391

A semi truck was blown over on I-88 near the junction at IL-56.

Thunderstorm Wind, Kane

When
March 31, 6:58 PM CST
Where
Kane County, 1.85 mi ENE of Prestbury
Measured
65 kt (75 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.787, -88.385

Power lines were blown down near Herget Middle School.

Thunderstorm Wind, Kane

When
March 31, 6:59 PM CST
Where
Kane County, 0.72 mi NW of North Aurora
Measured
65 kt (75 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.809, -88.338

A section of metal roofing panels was torn off of the Huntoon Stables on the east side of Highland Park in North Aurora.

Tornado, Kane

When
March 31, 7:00 PM CST to 7:02 PM CST
Where
Kane County, 0.86 mi SW of Batavia to 0.83 mi E of Batavia
Rating
EF0
Path length
1.6 mi
Path width
225 yd
Reported by
NWS Storm Survey
Coordinates
41.841, -88.332

This tornado began in an open field south of Engstrom Family Park and tracked east northeast towards downtown Batavia before lifting shortly after it crossed the Fox River near Wilson St. Damage along the tornado's path consisted of several uprooted and damaged trees, downed fences, downed power lines, roof shingles peeled off of houses, and a toppled chimney.

Thunderstorm Wind, McHenry

When
March 31, 7:00 PM CST
Where
McHenry County, 2.69 mi NW of Chemung
Measured
61 kt (70 mph) estimated gust
Reported by
Public
Coordinates
42.452, -88.701

Strong wind blew a residential corrugated steel garage door inward. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Kane

When
March 31, 7:00 PM CST
Where
Kane County, 0.44 mi ESE of Mooseheart
Measured
65 kt (75 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.818, -88.322

A tree was blown down across Route 25 near Ridge Rd.

Thunderstorm Wind, Kane

When
March 31, 7:00 PM CST
Where
Kane County, 1.45 mi SW of North Aurora
Measured
65 kt (75 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.785, -88.350

A tree was blown down across N Randall Rd north of W Indian Trail.

Flood, Will

When
March 31, 7:00 PM CST to 10:00 PM CST
Where
Will County, 1.11 mi WNW of Monee to 1.14 mi WSW of Monee
Cause
Heavy Rain
Reported by
Public
Coordinates
41.427, -87.760

A report was received noting streets and yards flooded in Monee.

Tornado, Kane

When
March 31, 7:01 PM CST to 7:03 PM CST
Where
Kane County, 1.27 mi WNW of St Charles to 1.18 mi N of St Charles
Rating
EF0
Path length
1.66 mi
Path width
150 yd
Reported by
NWS Storm Survey
Coordinates
41.915, -88.334

This tornado began south of Dean St near 15th St in St Charles and tracked northeast. It passed over Boy Scout Island and the Fox River before lifting near the intersection of Stonehedge Rd and Persimmon Dr. Damage along the tornado's path consisted of several uprooted and damaged trees, downed power lines, roof shingles peeled off of houses, and a damaged HVAC unit on the roof of a construction facility.

Thunderstorm Wind, McHenry

When
March 31, 7:01 PM CST
Where
McHenry County, 0.54 mi SE of Harvard
Measured
61 kt (70 mph) estimated gust
Reported by
Emergency Manager
Coordinates
42.416, -88.611

A tree had fallen on a home in Harvard. Wind magnitude and time were estimated based on radar.

Tornado, Kendall

When
March 31, 7:03 PM CST to 7:05 PM CST
Where
Kendall County, 1.42 mi WSW of Joliet to 0.85 mi ESE of Joliet
Rating
EF0
Path length
2.02 mi
Path width
250 yd
Continued into
Will, Il (LOT)
Reported by
NWS Storm Survey
Coordinates
41.539, -88.293

This tornado began near the intersection of Arbeiter and Black Roads in unincorporated Joliet. Several homes were damaged including to shingles and one chimney had collapsed. Just about a minute after touching down, the tornado crossed into Will County near Hadrian Dr and continued damaging shingles and trees lifting just before reaching IL Rt. 59.

Tornado, Iroquois

When
March 31, 7:04 PM CST to 7:15 PM CST
Where
Iroquois County, 2.35 mi SSW of Fountain Creek to 0.63 mi N of Wellington
Rating
EF1
Path length
8.72 mi
Path width
300 yd
Reported by
NWS Storm Survey
Coordinates
40.487, -87.823

This tornado originated in Vermillion County south of the town of Rankin east of N 2800E Rd and north of 3700 N Rd. The tornado tracked northeastward crossing into Iroquois County just west of N 1600 East Rd. The storm then dissipated about 8 miles later north of the town of Wellington just east of E 400 North Rd at N 2300 East Rd. While in Vermillion County, the tornado destroyed a couple of sheds and farm outbuildings, uprooted a number of trees, and did some roof damage to a home. In Iroquois County, a few trees were damaged along with the roofs of a couple of outbuildings.

Tornado, Will

When
March 31, 7:05 PM CST to 7:08 PM CST
Where
Will County, 3.33 mi WNW of Shorewood to 2.52 mi N of Shorewood
Rating
EF0
Path length
2.7 mi
Path width
250 yd
Reported by
NWS Storm Survey
Coordinates
41.545, -88.255

After dropping in far eastern Kendall County just about a minute sooner and doing damage to shingles and collapsing a chimney, this tornado crossed into Will County near Hadrian Dr in far west Joliet. It continued to do damage to shingles and trees before lifting a couple of minutes later near the intersection of Bedford Dr and Brighton Ln.

Tornado, Will

When
March 31, 7:05 PM CST to 7:07 PM CST
Where
Will County, 1.2 mi SE of Tamarack to 0.8 mi NNW of Plainfield
Rating
EF0
Path length
1.58 mi
Path width
125 yd
Reported by
NWS Storm Survey
Coordinates
41.637, -88.235

The tornado began near W 135th Street just west of Meadow Lane in Plainfield and tracked east-northeast before dissipating near the intersection of Golden Meadow Dr and Golden Sunset Dr just west of IL Rt. 59. The damage was confined to primarily trees, but some shingles and siding were removed from homes along the path.

Thunderstorm Wind, McHenry

When
March 31, 7:05 PM CST
Where
McHenry County, 2.55 mi E of Big Foot
Measured
56 kt (64 mph) estimated gust
Reported by
Trained Spotter
Coordinates
42.494, -88.550

Tree damage was reported at Alden Rd and State Line Rd. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Will

When
March 31, 7:06 PM CST
Where
Will County, 1.46 mi SE of Tamarack
Measured
63 kt (72 mph) measured gust
Reported by
Mesonet
Coordinates
41.634, -88.231

A Davis personal weather station measured a 72 mph gust. A large pine tree was blown down and multiple air conditioning units were blown over near Meadow Lane and 135th St.

Thunderstorm Wind, Will

When
March 31, 7:06 PM CST to 7:10 PM CST
Where
Will County, 2.66 mi NNW of Millsdale
Measured
61 kt (70 mph) estimated gust
Reported by
Public
Coordinates
41.467, -88.183

A strong thunderstorm wind surge produced a concentrated swath of notable damage to the northeast side of Channahon. The corridor of damage roughly runs along Canal Rd N and W McClintock Rd between US Rt 6 and Ingolsby Rd. Most of the damage was to trees with multiple trees uprooted and several more snapped and with branches torn off. However, there was also some minor siding and roofing damage done to a couple of homes.

Thunderstorm Wind, McHenry

When
March 31, 7:07 PM CST
Where
McHenry County, 2.16 mi W of Woodstock
Measured
61 kt (70 mph) estimated gust
Reported by
Emergency Manager
Coordinates
42.316, -88.492

Strong winds had blown down a tree west of Woodstock. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Will

When
March 31, 7:07 PM CST
Where
Will County, 1.25 mi WNW of Plainfield
Measured
52 kt (60 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.637, -88.222

Shingles were blown off of a roof and patio furniture was blown up and over a house near US Rt. 30 and 135 St. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, McHenry

When
March 31, 7:08 PM CST
Where
McHenry County, 2.57 mi NW of Village of Lakewood
Measured
56 kt (64 mph) estimated gust
Reported by
Public
Coordinates
42.245, -88.417

Wooden and metal roofing panels were removed from a farm building. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Du Page

When
March 31, 7:08 PM CST
Where
Du Page County, 0.54 mi SSW of Warrenville
Measured
52 kt (60 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.813, -88.174

A two foot diameter tree was blown down and was blocking River Rd at Townline Rd. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Du Page

When
March 31, 7:09 PM CST
Where
Du Page County, 0.95 mi N of Naperville
Measured
56 kt (64 mph) measured gust
Reported by
Public
Coordinates
41.784, -88.150

A private weather station recorded a 64 mph gust.

Thunderstorm Wind, Will

When
March 31, 7:11 PM CST
Where
Will County, 1.95 mi NNE of Carillon
Measured
56 kt (64 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.656, -88.125

A semi truck was blown over on I-55 near the junction at Weber Rd. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, McHenry

When
March 31, 7:12 PM CST
Where
McHenry County, 1.97 mi WNW of Galt Airport
Measured
61 kt (70 mph) estimated gust
Reported by
Emergency Manager
Coordinates
42.414, -88.413

Strong winds had blown down a tree northwest of Greenwood. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Kane

When
March 31, 7:12 PM CST
Where
Kane County, 0.38 mi SW of West Dundee
Measured
56 kt (64 mph) estimated gust
Reported by
Trained Spotter
Coordinates
42.096, -88.285

A tree trunk approximately 12 inches in diameter was uprooted. Many small to medium size branches were also blown down in the area. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Will

When
March 31, 7:13 PM CST
Where
Will County, 0.62 mi W of Joliet
Measured
62 kt (71 mph) measured gust
Reported by
Trained Spotter
Coordinates
41.529, -88.102

Thunderstorm Wind, Will

When
March 31, 7:13 PM CST
Where
Will County, 1.37 mi SSE of Crystal Lawns
Measured
56 kt (64 mph) estimated gust
Reported by
Emergency Manager
Coordinates
41.551, -88.142

Power lines were blown down on Theodore St and Cedarwood Dr. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Will

When
March 31, 7:14 PM CST
Where
Will County, 0.48 mi SSE of (Lot) Lewis University Airport
Measured
55 kt (63 mph) measured gust
Reported by
Official NWS Observations
Coordinates
41.604, -88.085

A 63 mph gust was measured at the National Weather Service office in Romeoville.

Tornado, Du Page

When
March 31, 7:17 PM CST to 7:19 PM CST
Where
Du Page County, 1.86 mi NW of Villa Park to 0.65 mi SSW of Addison
Rating
EF1
Path length
1.57 mi
Path width
175 yd
Reported by
NWS Storm Survey
Coordinates
41.907, -88.018

The tornado dropped in an industrial park near N Main St just north of N North Ave on the far north side of Lombard. There, it caused roof damage to a couple of buildings. It continued on into the town of Addison where it caused roof damage to office buildings. The tornado then caused primarily tree damage as it tracked across a residential area of Addison south of Fullerton Ave before lifting as it crossed Fullerton Ave at Hale St. South and east of the tornado's track was a large swath of additional damage caused by straight line winds.

Thunderstorm Wind, Cook

When
March 31, 7:17 PM CST
Where
Cook County, 1.52 mi W of Lemont
Measured
52 kt (60 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.673, -88.029

A semi truck was blown over on I-355 as it crossed the Des Plaines River north of Lemont. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, McHenry

When
March 31, 7:17 PM CST
Where
McHenry County, 1.04 mi NE of McHenry
Measured
56 kt (64 mph) estimated gust
Reported by
Emergency Manager
Coordinates
42.352, -88.258

Power lines were blown down on Riverside Dr south of McCullom Lake Rd in McHenry. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Du Page

When
March 31, 7:19 PM CST
Where
Du Page County, 0.87 mi SE of Addison
Measured
74 kt (85 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
41.920, -87.980

An NWS storm survey confirmed that a swath of damage across the south and east sides of Addison was caused by strong straight-line winds of up to approximately 85 mph. These straight-line winds occurred to the immediate south and east of the EF-1 tornado that tracked from Lombard into Addison. Damage included roofing material peeled off of office buildings and an apartment complex, a semi truck blown over on I-290, and damage to sound barriers along I-290.

Thunderstorm Wind, Cook

When
March 31, 7:19 PM CST
Where
Cook County, 0.79 mi SE of Plum Grove Estates
Measured
52 kt (60 mph) estimated gust
Reported by
Public
Coordinates
42.061, -88.020

Power lines were blown down along Algonquin Rd in Rolling Meadows. Wind magnitude and time were estimated based on radar.

Tornado, Iroquois

When
March 31, 7:20 PM CST to 7:24 PM CST
Where
Iroquois County, 2.87 mi SSW of Stockland to 0.23 mi ENE of Dawson Park
Rating
EF1
Path length
4.84 mi
Path width
300 yd
Reported by
NWS Storm Survey
Coordinates
40.572, -87.612

A brief tornado occurred south of Stockland dropping just south of E 600 North Rd and east of N 2700 East Rd. The storm damaged trees and power poles and destroyed a small farm outbuilding. The tornado lifted after only a few minutes east of N 3100 East Rd and south of E 880 North Rd just west of the Illinois-Indiana state line.

Thunderstorm Wind, Cook

When
March 31, 7:20 PM CST
Where
Cook County, 1.53 mi SE of Lemont
Measured
53 kt (61 mph) measured gust
Reported by
Emergency Manager
Coordinates
41.657, -87.976

A 61 mph gust was measured at the Lemont Emergency Operations Center.

Thunderstorm Wind, Cook

When
March 31, 7:24 PM CST
Where
Cook County, 0.86 mi NNW of Mt Prospect
Measured
52 kt (60 mph) estimated gust
Reported by
Trained Spotter
Coordinates
42.081, -87.936

A tree was blown down on the northeast corner of Rand Rd and Elmhurst Rd in Mt. Prospect. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Cook

When
March 31, 7:28 PM CST
Where
Cook County, 0.12 mi NNW of Dunning
Measured
52 kt (60 mph) estimated gust
Reported by
Public
Coordinates
41.942, -87.811

A tree was blown down in Chicago's Dunning neighborhood. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Cook

When
March 31, 7:30 PM CST
Where
Cook County, 0.92 mi WSW of Burbank
Measured
52 kt (60 mph) measured gust
Reported by
COOP Observer
Coordinates
41.737, -87.778

Thunderstorm Wind, Cook

When
March 31, 7:31 PM CST
Where
Cook County, 0.67 mi S of Burbank
Measured
52 kt (60 mph) estimated gust
Reported by
Public
Coordinates
41.730, -87.758

A pine tree was uprooted on S 55th Ave near W 89th St in Burbank. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Cook

When
March 31, 7:32 PM CST
Where
Cook County, (Mdw) Chicago Midway Airport
Measured
54 kt (62 mph) measured gust
Reported by
ASOS
Coordinates
41.780, -87.750

Thunderstorm Wind, Cook

When
March 31, 7:35 PM CST
Where
Cook County, 0.73 mi ENE of Richton Park
Measured
52 kt (60 mph) estimated gust
Reported by
Trained Spotter
Coordinates
41.485, -87.687

An 11-inch branch broke off of a tree on Lakewood Blvd in Park Forest. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Cook

When
March 31, 7:35 PM CST
Where
Cook County, 0.76 mi WNW of Richton Park
Measured
52 kt (60 mph) estimated gust
Reported by
Social Media
Coordinates
41.483, -87.714

A photo was shared via Twitter that shows a portion of a parapet wall that had been blown off of a strip mall on the southwest corner of Governors Hwy and Sauk Trail in Richton Park. Wind magnitude and time were estimated based on radar.

Thunderstorm Wind, Will

When
March 31, 7:40 PM CST
Where
Will County, 0.51 mi WNW of Peotone
Measured
53 kt (61 mph) measured gust
Reported by
Trained Spotter
Coordinates
41.332, -87.789

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Tornado, Boone2023-03-3150MaleBusinessDirect

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
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.

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

The same day elsewhere

More

Every storm in Illinois in 2023Every state in 2023This day in weather historyThe tornado archive for Illinois, 2023Warnings in Illinois, March 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: 1086973, 1085796, 1086974, 1086975, 1086976, 1089121, 1089123, 1089124, 1086079, 1086080, 1088789, 1089118, 1089119, 1089122, 1085812, 1087527, 1087528, 1085817, 1087531, 1087530, 1087536, 1087532, 1087533, 1085827, 1087535, 1086999, 1087542, 1087540, 1088418, 1085832, 1085839, 1085836, 1086998, 1087000, 1087001, 1087572, 1085844, 1087002, 1087003, 1089573, and more.