Illinois, 2017

Flash Flooding and Flooding in Illinois, May 4 to 6, 2017

May 4 to 6, 2017 · NWS ILX · 34 events in 17 counties and zones

Another round of heavy rainfall occurred across central and southeast Illinois on May 4th, as an area of low pressure tracked from the Texas panhandle to southwest Indiana. 5 inches.

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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
34

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.

Another round of heavy rainfall occurred across central and southeast Illinois on May 4th, as an area of low pressure tracked from the Texas panhandle to southwest Indiana. Rainfall with this particular system was heaviest across south-central Illinois, with many locations along and south of I-72 receiving 1.5 to 2.5 inches. 6-day rainfall totals from April 29-May 4 ranged from 4 to 7 inches. Cooperative weather observers measured 7.26 in Newton (Jasper County), 7.07 at the Shelbyville Dam (Shelby County), 6.44 in Neoga (Cumberland County), 6.25 in Pana (Christian County), 6.01 in Casey (Marshall County), 5.93 3 miles southwest of Effingham (Effingham County), and 5.55 in Tuscola (Douglas County). Due to this second bout of heavy rain occurring on top of already saturated soils, widespread flash flooding occurred along and south of a Danville to Taylorville line on May 4th...with areal flooding persisting in many locations through May 6th.

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 4, 5:22 AM CST, 1 hour 8 minutes earlier.

Area forecast discussion, May 4, 5:22 AM CST, 1 hour 8 minutes before
Area Forecast Discussion
National Weather Service Lincoln IL
622 AM CDT Thu May 4 2017

.SHORT TERM...(Today and tonight)
ISSUED AT 323 AM CDT Thu May 4 2017
Deep and slow moving storm system currently to the south/southwest
over Central Arkansas this morning continues to bring plenty of
rain to the region. Rain this morning heaviest to the south and
east of the IL River Valley. This general area expected to
continue to see rain through today and slowly shift eastward
through the overnight. General instability is limited and forecast
soundings keep a very weak lapse rate over the FA should limit
thunder...though proximity of the low/trof later this afternoon
could result in some scattered thunder mainly S of I-70.
Windy day expected with a tightening pressure gradient as well as
the wind just off the surface in excess of 30 kts mixing down with
some of the showers/rain. Not quite to wind advisory
criteria...but will have to be watched with the 12z soundings to
see some of the momentum transfer potential. Flash Flood Watch
remains in place with more rain expected throughout the day and
saturated ground in place...and another inch or so possible today.
Cool temps with all the cloud cover and rain...similar tonight
until the rain moves out...with winds staying up through the
overnight hours.

.LONG TERM...(Friday through Wednesday)
ISSUED AT 323 AM CDT Thu May 4 2017

No significant changes to the forecast as the models are painting
similar pictures with the slow movement of the deep low through
the Ohio River Valley through the end of the week. Rain chances
extending through Friday in the south and east. Sunshine in the
west slowly trying to bring temps back up to low 60s in the west
on Friday...and across the entire area on Saturday. Warmer temps
under the western ridge start to edge into the Midwest behind the
slow exiting trough...with sunshine trying to rebound the temps to
more springlike conditions. Prev solutions brought another round
of precip to at least eastern IL...potentially over the
weekend...and the 00Z ECMWF is even more heavy handed with that
wave...but Saturday forecast has only minimal pops for lack of
confidence. Windy conditions expected to continue Saturday in the
wake of the system. Winds come around to include a more southerly
component for the beginning of next week...with a slow increase
in temperatures. Pops kept to a minimum in the extended forecast
until the end of next week.

&&

.AVIATION...(For the 12Z TAFS through 12Z Friday morning)
Issued at 609 AM CDT Thu May 4 2017

Not much of a shift in the forecast...mainly rain... PIA on the
edge of the showers now...eventually SPI will follow suit as the
showers drift eastward. Taking the cigs down to IFR in some
locations...and bouncing btwn IFR and VFR in others. Strong
winds, gusting to 30-35kts later today...between the pressure
gradient and showers mixing down some higher gusts from just off
the surface. Keeping winds up through the overnight hours. Previous
guidance tried to hint at a LLWS issue...but has been marginal
after midnight tonight and very low confidence so for now it has
been left out.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Friday morning for ILZ042>057-061>063-
066>068-071>073.

&&

SHORT TERM...HJS
LONG TERM...HJS
AVIATION...HJS
Hazardous weather outlook, May 4, 5:07 AM CST, 1 hour 23 minutes before
Hazardous Weather Outlook
National Weather Service Lincoln IL
607 AM CDT Thu May 4 2017

ILZ027>031-036>038-040-041-051100-
Fulton-Knox-Marshall-Mason-McLean-Peoria-Schuyler-Stark-Tazewell-
Woodford-
607 AM CDT Thu May 4 2017

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

.DAY ONE...TODAY AND TONIGHT...

Minor flooding should recede along the Spoon River near London
Mills today.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

Moderate flooding will continue along the Illinois River through
the entire period. Please see the applicable flood warnings for
details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

ILZ042>057-061-051100-
Cass-Champaign-Christian-Coles-De Witt-Douglas-Edgar-Logan-Macon-
Menard-Morgan-Moultrie-Piatt-Sangamon-Scott-Shelby-Vermilion-
607 AM CDT Thu May 4 2017

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

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

.DAY ONE...TODAY AND TONIGHT...

Periods of moderate to heavy rainfall will occur today and
tonight. Areas of flash flooding may develop due to rains
falling on saturated soils.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

Light rain is expected to linger on Friday. Storm total rainfall
of 2 to 3 inches will be common, with amounts in excess of 3
inches possible along a line from Shelbyville, to Mattoon, to
Paris. The heavy rain on top of already saturated soil will
aggravate ongoing flooding.

Minor to moderate flooding will continue along portions of the
Illinois, Sangamon, and Vermilion Rivers, as well as Salt Creek.
Please see the applicable flood warnings for details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight. However,
any reports of flooding or heavy rainfall would be appreciated.

ILZ062-063-066>068-071>073-051100-
Clark-Clay-Crawford-Cumberland-Effingham-Jasper-Lawrence-Richland-
607 AM CDT Thu May 4 2017

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

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

.DAY ONE...TODAY AND TONIGHT...

Periods of moderate to heavy rainfall will occur today and
tonight. Areas of flash flooding may develop due to rains
falling on saturated soils.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

Light rain will linger on Friday. Storm total rainfall of 2 to 3
inches will be common, with amounts in excess of 3 inches possible
along I-70. The heavy rain on top of already saturated soil will
aggravate ongoing flooding.

Minor to moderate flooding will continue along portions of the
Wabash, Little Wabash, and Embarras Rivers. Please see the
applicable flood warnings for details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight. However,
any reports of flooding or heavy rainfall would be appreciated.

Shimon

In the hours before

Local storm report, May 4, 5:19 AM CST, 1 hour 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
619 AM CDT THU MAY 04 2017

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

0600 AM     HEAVY RAIN       6 SSE CLAY CITY         38.61N 88.31W
05/04/2017  M1.32 INCH       CLAY               IL   CO-OP OBSERVER

            24 HOUR TOTAL

0600 AM     HEAVY RAIN       2 S MOWEAQUA            39.60N 89.02W
05/04/2017  M1.34 INCH       SHELBY             IL   CO-OP OBSERVER

            24 HOUR TOTAL

&&

25
Local storm report, May 4, 5:57 AM CST, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
657 AM CDT THU MAY 04 2017

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

0630 AM     HEAVY RAIN       SULLIVAN                39.60N 88.61W
05/04/2017  M1.95 INCH       MOULTRIE           IL   TRAINED SPOTTER

            24 HOUR TOTAL

0630 AM     HEAVY RAIN       WINDSOR                 39.44N 88.60W
05/04/2017  M2.28 INCH       SHELBY             IL   CO-OP OBSERVER

            24 HOUR TOTAL

0630 AM     HEAVY RAIN       PANA                    39.39N 89.08W
05/04/2017  M2.27 INCH       CHRISTIAN          IL   CO-OP OBSERVER

            24 HOUR TOTAL

&&

25
Local storm report, May 4, 6:08 AM CST, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
708 AM CDT THU MAY 04 2017

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

0645 AM     HEAVY RAIN       DANVILLE                40.14N 87.62W
05/04/2017  M1.25 INCH       VERMILION          IL   EMERGENCY MNGR

            SINCE 4 PM WEDNESDAY. MODERATE RAIN CONTINUES.

0645 AM     HEAVY RAIN       3 S DANVILLE            40.10N 87.62W
05/04/2017  M1.37 INCH       VERMILION          IL   EMERGENCY MNGR

            STORM TOTAL...MODERATE RAIN CONTINUES

0700 AM     HEAVY RAIN       LOVINGTON               39.71N 88.63W
05/04/2017  M1.80 INCH       MOULTRIE           IL   CO-OP OBSERVER

            24 HOUR TOTAL

0700 AM     HEAVY RAIN       MATTOON                 39.48N 88.37W
05/04/2017  M2.14 INCH       COLES              IL   MESONET

            STORM TOTAL SO FAR

0700 AM     HEAVY RAIN       COLES COUNTY AIRPORT    39.48N 88.28W
05/04/2017  M2.37 INCH       COLES              IL   ASOS

            STORM TOTAL SO FAR

&&

25
Local storm report, May 4, 6:24 AM CST, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
724 AM CDT THU MAY 04 2017

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

0700 AM     HEAVY RAIN       5 NW SIDELL             39.96N 87.89W
05/04/2017  M1.63 INCH       VERMILION          IL   CO-OP OBSERVER

0700 AM     HEAVY RAIN       3 SW EFFINGHAM          39.09N 88.59W
05/04/2017  M2.22 INCH       EFFINGHAM          IL   CO-OP OBSERVER

            24 HOUR TOTAL

0700 AM     HEAVY RAIN       TUSCOLA                 39.80N 88.28W
05/04/2017  M1.82 INCH       DOUGLAS            IL   CO-OP OBSERVER

            24 HOUR TOTAL

0700 AM     HEAVY RAIN       3 S SULLIVAN            39.55N 88.61W
05/04/2017  M2.31 INCH       MOULTRIE           IL   CO-OP OBSERVER

            24 HOUR TOTAL

&&

25
Local storm report, May 4, 6:28 AM CST, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
728 AM CDT THU MAY 04 2017

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

0700 AM     FLOOD            SULLIVAN                39.60N 88.61W
05/04/2017                   MOULTRIE           IL   TRAINED SPOTTER

            NUMEROUS COUNTY ROADS FLOODED IN THE SOUTHERN HALF OF
            MOULTRIE CO.

&&

25

The radar

The Lincoln radar (KILX), 71 km away, was scanning. The volume nearest the first event began at 12:28 UTC.

Open the radar archive at this moment

Event by event

17 flash flood, 17 flood. Local standard time, as filed.

Flash Flood, Shelby

When
May 4, 6:30 AM CST to 2:45 PM CST
Where
Shelby County, 6.61 mi NNE of Obed to 1.5 mi SSW of Moweaqua
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.654, -88.810

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Shelby County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Parts of Illinois Route 128 were closed north and south of Shelbyville, and Illinois Route 32 was closed north of Windsor.

Flash Flood, Christian

When
May 4, 7:00 AM CST to 2:45 PM CST
Where
Christian County, 2.83 mi NW of Sicily to 0.64 mi WNW of Harvel
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.611, -89.534

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across southern Christian County. Officials reported that most roads were impassable and numerous creeks rapidly flooded.

Flash Flood, Coles

When
May 4, 7:00 AM CST to 2:45 PM CST
Where
Coles County, 6.27 mi NW of Cooks Mills to 1.76 mi W of Etna
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.652, -88.472

Heavy rainfall of 2.00 to 3.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Coles County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Several streets in Charleston and Mattoon were closed due to the flooding. Parts of Illinois Route 130 north of Charleston were also closed, as were nearly all rural roads between Oakland and Charleston.

Flash Flood, Moultrie

When
May 4, 7:15 AM CST to 2:45 PM CST
Where
Moultrie County, 5.06 mi N of Lovington to 6 mi W of Bethany
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
39.792, -88.617

Heavy rainfall of 1.75 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across southern and central Moultrie County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Illinois Route 32 was closed in spots, between Lovington and Sullivan, and near the Shelby County line. Illinois Route 121 was also inundated between Allenville and Coles.

Flash Flood, Cumberland

When
May 4, 7:30 AM CST to 2:45 PM CST
Where
Cumberland County, 2.75 mi W of Lake Mattoon to 5 mi S of Neoga
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
39.373, -88.471

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Cumberland County. Officials reported that most roads were impassable and numerous creeks rapidly flooded.

Flash Flood, Piatt

When
May 4, 8:00 AM CST to 2:45 PM CST
Where
Piatt County, 4.58 mi E of Monticello Arpt to 0.57 mi N of Voorhies
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
40.001, -88.464

Heavy rainfall of 1.50 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across southern Piatt County. Officials reported that most roads were impassable and numerous creeks rapidly flooded.

Flash Flood, Douglas

When
May 4, 8:00 AM CST to 2:45 PM CST
Where
Douglas County, 5.92 mi NNW of Garrett to 5.99 mi S of Arthur
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.879, -88.462

Heavy rainfall of 2.00 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Douglas County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Illinois Route 130 was closed from Camargo to the Champaign County line. Nearly all rural roads north of U.S. Highway 36 in the northeast part of the county were also closed.

Flash Flood, Champaign

When
May 4, 8:30 AM CST to 2:45 PM CST
Where
Champaign County, 5.11 mi N of Penfield to 0.55 mi NNW of Rantoul
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
40.373, -87.932

Heavy rainfall of 1.50 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Champaign County. Officials reported that most roads were impassable and numerous creeks rapidly flooded, particularly south of I-74 and east of I-57. Numerous streets and viaducts in Champaign and Urbana were also flooded.

Flash Flood, Effingham

When
May 4, 8:30 AM CST to 2:45 PM CST
Where
Effingham County, 3.06 mi NW of Beecher City to 2.82 mi W of Edgewood
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.215, -88.806

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Effingham County. Officials reported that most roads were impassable and numerous creeks rapidly flooded.

Flash Flood, Edgar

When
May 4, 8:45 AM CST to 2:45 PM CST
Where
Edgar County, 3.11 mi WNW of Palermo to 0.94 mi NW of Mc Cown
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.880, -87.937

Heavy rainfall of 2.00 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Edgar County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. The heaviest rain was reported in the northwest corner of the county where nearly all rural roads were under water north of U.S. Highway 36.

Flash Flood, Vermilion

When
May 4, 9:00 AM CST to 2:45 PM CST
Where
Vermilion County, 3.14 mi WNW of Ellis to 3.81 mi NW of Hope
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
40.373, -87.932

Heavy rainfall of 1.50 to 2.50 inches during the morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Vermilion County. Officials reported that most roads were impassable and numerous creeks rapidly flooded, particularly south of I-74. Most rural roads from Allerton to Jamaica to Sidell were closed.

Flash Flood, Jasper

When
May 4, 9:00 AM CST to 2:45 PM CST
Where
Jasper County, 5.17 mi NNW of Island Grove to 4.53 mi SW of Bogota
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.171, -88.360

Heavy rainfall of 1.50 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Jasper County. Officials reported that most roads were impassable and numerous creeks rapidly flooded.

Flash Flood, Clark

When
May 4, 9:15 AM CST to 2:45 PM CST
Where
Clark County, 2.19 mi NNW of Westfield to 0.45 mi SW of Moriah
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
39.480, -88.014

Heavy rainfall around 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Clark County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Nearly all of the rural roads north of I-70 were closed, particularly along the Edgar County line.

Flash Flood, Crawford

When
May 4, 9:15 AM CST to 2:45 PM CST
Where
Crawford County, 1.63 mi N of Bellair to 1.97 mi WSW of Landes
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.173, -87.951

Heavy rainfall of 1.00 to 2.00 inches during the morning hours of May 4th, on already saturated ground, resulted in flash flooding across Crawford County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. The heaviest rain was in northeast Crawford County from Hutsonville to West York.

Flash Flood, Clay

When
May 4, 9:15 AM CST to 2:45 PM CST
Where
Clay County, 6.6 mi N of Cruse to 5.48 mi WSW of Xenia
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
38.914, -88.694

Heavy rainfall of 1.00 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Clay County. Officials reported that most rural roads were impassable, streets in Flora were flooded and numerous creeks rapidly flooded.

Flash Flood, Richland

When
May 4, 9:30 AM CST to 2:45 PM CST
Where
Richland County, 1.28 mi NNW of Wakefield to 4.11 mi W of Pureton
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
38.847, -88.258

Heavy rainfall of 1.00 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most Richland County. Officials reported that most rural roads were impassable, several streets in Olney were flooded, and numerous creeks rapidly flooded.

Flash Flood, Lawrence

When
May 4, 9:30 AM CST to 2:45 PM CST
Where
Lawrence County, 4.37 mi WNW of Chauncey to 2.35 mi SSW of Helena
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
38.849, -87.907

Heavy rainfall of 1.00 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Lawrence County. Officials reported that most rural roads were impassable and numerous creeks rapidly flooded. The heaviest rain was reported in northwest Lawrence County near Chauncey.

Flood, Christian

When
May 4, 2:45 PM CST to May 5, 2:45 PM CST
Where
Christian County, 2.83 mi NW of Sicily to 0.64 mi WNW of Harvel
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.611, -89.534

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across southern Christian County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Additional rainfall of 0.50 to 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Shelby

When
May 4, 2:45 PM CST to May 5, 2:45 PM CST
Where
Shelby County, 6.61 mi NNE of Obed to 1.5 mi SSW of Moweaqua
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.654, -88.810

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Shelby County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Parts of Illinois Route 128 were closed north and south of Shelbyville, and Illinois Route 32 was closed north of Windsor. Additional rainfall of 0.50 to 1.50 inches later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Moultrie

When
May 4, 2:45 PM CST to May 5, 2:45 PM CST
Where
Moultrie County, 5.06 mi N of Lovington to 6 mi W of Bethany
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
39.792, -88.617

Heavy rainfall of 1.75 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across southern and central Moultrie County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Illinois Route 32 was closed in spots, between Lovington and Sullivan, and near the Shelby County line. Illinois Route 121 was also inundated between Allenville and Coles. Additional rainfall of 0.50 to 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Piatt

When
May 4, 2:45 PM CST to May 5, 2:45 PM CST
Where
Piatt County, 4.58 mi E of Monticello Arpt to 0.57 mi N of Voorhies
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
40.001, -88.464

Heavy rainfall of 1.50 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across southern Piatt County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Additional rainfall of 0.50 to 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Champaign

When
May 4, 2:45 PM CST to May 5, 2:45 PM CST
Where
Champaign County, 5.11 mi N of Penfield to 0.55 mi NNW of Rantoul
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
40.373, -87.932

Heavy rainfall of 1.50 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Champaign County. Officials reported that most roads were impassable and numerous creeks rapidly flooded, particularly south of I-74 and east of I-57. Numerous streets and viaducts in Champaign and Urbana were also flooded. Additional rainfall of 1.00 to 1.50 inches later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Vermilion

When
May 4, 2:45 PM CST to May 5, 2:45 PM CST
Where
Vermilion County, 3.14 mi WNW of Ellis to 3.81 mi NW of Hope
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
40.373, -87.932

Heavy rainfall of 1.50 to 2.50 inches during the morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Vermilion County. Officials reported that most roads were impassable and numerous creeks rapidly flooded, particularly south of I-74. Most rural roads from Allerton to Jamaica to Sidell were closed. Additional rainfall of 1.00 to 1.50 inches later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Douglas

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Douglas County, 5.92 mi NNW of Garrett to 5.99 mi S of Arthur
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.879, -88.462

Heavy rainfall of 2.00 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Douglas County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Illinois Route 130 was closed from Camargo to the Champaign County line. Nearly all rural roads north of U.S. Highway 36 in the northeast part of the county were also closed. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Coles

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Coles County, 6.27 mi NW of Cooks Mills to 1.76 mi W of Etna
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.652, -88.472

Heavy rainfall of 2.00 to 3.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Coles County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Several streets in Charleston and Mattoon were closed due to the flooding. Parts of Illinois Route 130 north of Charleston were also closed, as were nearly all rural roads between Oakland and Charleston. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Edgar

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Edgar County, 3.11 mi WNW of Palermo to 0.94 mi NW of Mc Cown
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.880, -87.937

Heavy rainfall of 2.00 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Edgar County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. The heaviest rain was reported in the northwest corner of the county where nearly all rural roads were under water north of U.S. Highway 36. Additional rainfall of 1.00 to 2.00 inches later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Cumberland

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Cumberland County, 2.75 mi W of Lake Mattoon to 5 mi S of Neoga
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
39.373, -88.471

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Cumberland County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Clark

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Clark County, 2.19 mi NNW of Westfield to 0.45 mi SW of Moriah
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
39.480, -88.014

Heavy rainfall around 2.00 inches during the morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Clark County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Nearly all of the rural roads north of I-70 were closed, particularly along the Edgar County line. Additional rainfall around 1.00 to 1.50 inches later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Effingham

When
May 4, 2:45 PM CST to May 5, 2:30 PM CST
Where
Effingham County, 3.06 mi NW of Beecher City to 2.82 mi W of Edgewood
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.215, -88.806

Heavy rainfall of 2.00 to 3.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Effingham County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Jasper

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Jasper County, 5.17 mi NNW of Island Grove to 4.53 mi SW of Bogota
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.171, -88.360

Heavy rainfall of 1.50 to 2.50 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most of Jasper County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Crawford

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Crawford County, 1.63 mi N of Bellair to 1.97 mi WSW of Landes
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
39.173, -87.951

Heavy rainfall of 1.00 to 2.00 inches during the morning hours of May 4th, on already saturated ground, resulted in flash flooding across Crawford County. Officials reported that most roads were impassable and numerous creeks rapidly flooded. The heaviest rain was in northeast Crawford County from Hutsonville to West York. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Clay

When
May 4, 2:45 PM CST to May 5, 2:30 PM CST
Where
Clay County, 6.6 mi N of Cruse to 5.48 mi WSW of Xenia
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
38.914, -88.694

Heavy rainfall of 1.00 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Clay County. Officials reported that most rural roads were impassable, streets in Flora were flooded and numerous creeks rapidly flooded. Additional rainfall of 0.50 to 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 24 hours. Flood waters subsided by the afternoon on May 5th.

Flood, Richland

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Richland County, 1.28 mi NNW of Wakefield to 4.11 mi W of Pureton
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
38.847, -88.258

Heavy rainfall of 1.00 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across most Richland County. Officials reported that most rural roads were impassable, several streets in Olney were flooded, and numerous creeks rapidly flooded. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

Flood, Lawrence

When
May 4, 2:45 PM CST to May 6, 2:00 PM CST
Where
Lawrence County, 4.37 mi WNW of Chauncey to 2.35 mi SSW of Helena
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
38.849, -87.907

Heavy rainfall of 1.00 to 2.00 inches during the early morning hours of May 4th, on already saturated ground, resulted in flash flooding across much of Lawrence County. Officials reported that most rural roads were impassable and numerous creeks rapidly flooded. The heaviest rain was reported in northwest Lawrence County near Chauncey. Additional rainfall around 1.00 inch later in the day May 4th into May 5th caused creeks and roads to stay flooded for nearly 48 hours. Flood waters subsided by the afternoon on May 6th.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

More

Every storm in Illinois in 2017Every state in 2017This day in weather historyWarnings in Illinois, May 2017

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: 703232, 703226, 703295, 703239, 703304, 703244, 703292, 703252, 703310, 703301, 703286, 703311, 703307, 703319, 703323, 703326, 703328, 703228, 703233, 703238, 703245, 703253, 703288, 703293, 703296, 703302, 703305, 703308, 703309, 703313, 703318, 703324, 703327, 703329.