Alert archive / Illinois / Flash Flood Watches in 2021

Flash Flood Watch 3, NWS Lincoln, IL

June 24, 202127 counties in Illinois

NWS Lincoln, IL issued this flash flood watch at Jun 24, 2021, 2:28 PM CDT for 27 counties in Illinois. It took effect at Jun 24, 2021, 7:00 PM CDT. It was in force for 50 hr.

The area

The counties it named.

The facts

Issued
Jun 24, 2021, 2:28 PM CDT (19:28 UTC)
In effect from
Jun 24, 2021, 7:00 PM CDT
Expired
Jun 26, 2021, 8:48 PM CDT
In force
50 hr
Issued by
NWS Lincoln, IL
Flood severity
None
All 27 counties

Cass County, IL, Champaign County, IL, Christian County, IL, Coles County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Fulton County, IL, Knox County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 5 km from the middle of the area, began a volume at 19:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.5 hours before the alert went out and 57 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2021-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2021-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1467 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

As transmitted.

941 
WGUS63 KILX 241928
FFAILX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Lincoln IL
228 PM CDT Thu Jun 24 2021

ILZ027>031-036>038-040>057-061-251000-
/O.NEW.KILX.FF.A.0003.210625T0000Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Winchester, Paris, Urbana, Toulon, Canton, 
Petersburg, Danville, Bloomington, Springfield, Tuscola, Normal, 
Champaign, Peoria, Beardstown, Monticello, Jacksonville, Lincoln, 
Havana, Eureka, Pekin, Charleston, Galesburg, Mattoon, Rushville, 
Clinton, Sullivan, Lacon, Decatur, Taylorville, and Shelbyville
228 PM CDT Thu Jun 24 2021

...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH 
SATURDAY MORNING...

The National Weather Service in Lincoln has issued a

* Flash Flood Watch for portions of central Illinois...east central 
  Illinois and west central Illinois, including the following 
  counties, in central Illinois, Christian, De Witt, Logan, Macon, 
  Marshall, Mason, McLean, Menard, Peoria, Piatt, Sangamon, Shelby, 
  Stark, Tazewell and Woodford. In east central Illinois, Champaign, 
  Coles, Douglas, Edgar, Moultrie and Vermilion. In west central 
  Illinois, Cass, Fulton, Knox, Morgan, Schuyler and Scott.

* From 7 PM CDT this evening through Saturday morning

* Several rounds of heavy rainfall are expected over the next 36 
  hours across most of central Illinois as a slow moving boundary 
  sinks south across the area. 3 to 5 inches is expected from 
  tonight through Saturday morning with some higher amounts possible 
  from heavier storms. Where the ground becomes saturated, flash 
  flooding will become more likely, especially in low-lying and 
  flood prone area.

* Excessive runoff will cause small rivers, creeks and streams to 
  rise out of their banks quickly. Rises along major rivers are also 
  likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead to 
Flash Flooding. Flash Flooding is a very dangerous situation. You 
should monitor later forecasts and be prepared to take action should 
Flash Flood Warnings be issued.

Do not enter or cross flowing water or water of unknown depth.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

&&

$$

Auten
7 follow-up statements
112 
WGUS63 KILX 250810
FFAILX

Flood Watch
National Weather Service Lincoln IL
310 AM CDT Fri Jun 25 2021

ILZ027>031-036>038-040>057-061-252100-
/O.CON.KILX.FF.A.0003.000000T0000Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Winchester, Paris, Urbana, Toulon, Canton, 
Petersburg, Danville, Bloomington, Springfield, Tuscola, Normal, 
Champaign, Peoria, Beardstown, Monticello, Jacksonville, Lincoln, 
Havana, Eureka, Pekin, Charleston, Galesburg, Mattoon, Rushville, 
Clinton, Sullivan, Lacon, Decatur, Taylorville, and Shelbyville
310 AM CDT Fri Jun 25 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 7 AM SATURDAY 
MORNING...

The Flash Flood Watch continues for

* Portions of central Illinois...east central Illinois and west 
  central Illinois, including the following counties, in central 
  Illinois, Christian, De Witt, Logan, Macon, Marshall, Mason, 
  McLean, Menard, Peoria, Piatt, Sangamon, Shelby, Stark, Tazewell 
  and Woodford. In east central Illinois, Champaign, Coles, Douglas, 
  Edgar, Moultrie and Vermilion. In west central Illinois, Cass, 
  Fulton, Knox, Morgan, Schuyler and Scott.

* Through Saturday morning

* Several rounds of heavy rainfall are expected across most of 
  central Illinois today and tonight as a boundary remains near 
  central IL. Between 2 and 4 inches of additional rainfall is 
  expected by dawn Saturday with locally higher amounts from I-72 
  north. Where the ground becomes saturated, flash flooding will 
  become more likely, especially in low-lying and flood prone area.

* Excessive runoff will cause small rivers, creeks and streams to 
  rise out of their banks quickly. Rises along major rivers are also 
  likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead to 
flash flooding. Do no enter or cross flowing water or water of 
unknown depth.  River banks and culverts can become unstable and 
unsafe. Please monitor later forecasts and be prepared to take 
action should Flash Flood Warnings be issued.


&&

$$

07
844 
WGUS63 KILX 251934
FFAILX

Flood Watch
National Weather Service Lincoln IL
234 PM CDT Fri Jun 25 2021

ILZ027>031-036>038-040>057-061-260600-
/O.CON.KILX.FF.A.0003.000000T0000Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Winchester, Paris, Urbana, Toulon, Canton, 
Petersburg, Danville, Bloomington, Springfield, Tuscola, Normal, 
Champaign, Peoria, Beardstown, Monticello, Jacksonville, Lincoln, 
Havana, Eureka, Pekin, Charleston, Galesburg, Mattoon, Rushville, 
Clinton, Sullivan, Lacon, Decatur, Taylorville, and Shelbyville
234 PM CDT Fri Jun 25 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of central Illinois...east central Illinois and west 
  central Illinois, including the following counties, in central 
  Illinois, Christian, De Witt, Logan, Macon, Marshall, Mason, 
  McLean, Menard, Peoria, Piatt, Sangamon, Shelby, Stark, Tazewell 
  and Woodford. In east central Illinois, Champaign, Coles, Douglas, 
  Edgar, Moultrie and Vermilion. In west central Illinois, Cass, 
  Fulton, Knox, Morgan, Schuyler and Scott.

* Through Saturday morning

* Several rounds of storms are expected to bring heavy rainfall to 
  areas north of I-70 this evening and overnight. Additional 
  rainfall amounts of 1 to 2 inches are expected to fall onto 
  already saturated soils. This may result in flash flooding, 
  especially in low-lying and flood prone areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead to 
Flash Flooding. Flash Flooding is a very dangerous situation. You 
should monitor later forecasts and be prepared to take action should 
Flash Flood Warnings be issued.

Do not enter or cross flowing water or water of unknown depth.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

&&

$$

NMB
820 
WGUS63 KILX 260328
FFAILX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Lincoln IL
1028 PM CDT Fri Jun 25 2021


ILZ027>031-036>038-040>057-061-261000-
/O.EXT.KILX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Galesburg, Toulon, Peoria, Lacon, Eureka,
Canton, Pekin, Bloomington, Normal, Rushville, Havana, Lincoln, 
Clinton, Monticello, Champaign, Urbana, Danville, Beardstown, 
Petersburg, Winchester, Jacksonville, Springfield, Taylorville, 
Decatur, Sullivan, Tuscola, Charleston, Mattoon, Paris, 
and Shelbyville
1028 PM CDT Fri Jun 25 2021

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH SUNDAY MORNING...

The Flash Flood Watch is now in effect for

* All of central Illinois north of I-70. 

* Through Sunday morning

* Thunderstorms will continue across the area tonight. After a
  brief lull in the precipitation late tonight into Saturday
  morning, additional thunderstorms will develop Saturday
  afternoon and evening. Additional rainfall of 1 to 2
  inches...with isolated higher amounts is likely. This may result  
  in flash flooding, especially in low-lying and flood prone 
  areas. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to Flash Flooding. Flash Flooding is a very dangerous situation.
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

Do not enter or cross flowing water or water of unknown depth.

Stay away or be swept away. River banks and culverts can become
unstable and unsafe.

&&

$$

Barnes
483 
WGUS63 KILX 260846
FFAILX

Flood Watch
National Weather Service Lincoln IL
346 AM CDT Sat Jun 26 2021

ILZ027>031-036>038-040>057-061-262115-
/O.CON.KILX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Winchester, Paris, Urbana, Toulon, Canton, 
Petersburg, Danville, Bloomington, Springfield, Tuscola, Normal, 
Champaign, Peoria, Beardstown, Monticello, Jacksonville, Lincoln, 
Havana, Eureka, Pekin, Charleston, Galesburg, Mattoon, Rushville, 
Clinton, Sullivan, Lacon, Decatur, Taylorville, and Shelbyville
346 AM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH 7 AM SUNDAY MORNING...

The Flash Flood Watch continues for

* Portions of central Illinois...east central Illinois and west 
  central Illinois, including the following counties, in central 
  Illinois, Christian, De Witt, Logan, Macon, Marshall, Mason, 
  McLean, Menard, Peoria, Piatt, Sangamon, Shelby, Stark, Tazewell 
  and Woodford. In east central Illinois, Champaign, Coles, Douglas, 
  Edgar, Moultrie and Vermilion. In west central Illinois, Cass, 
  Fulton, Knox, Morgan, Schuyler and Scott.

* Through Sunday morning

* More rounds of showers and thunderstorms are expected to bring 
  moderate to heavy rainfall to areas north of I-70 today through 
  tonight. Additional rainfall amounts of 1 to 3 inches with locally 
  higher amounts are expected to fall onto already saturated soils 
  from recent heavy rains. This may result in flash flooding, 
  especially in low-lying and flood prone areas.

* Excessive runoff will cause small rivers, creeks and streams to 
  rise out of their banks quickly. Rises along major rivers are also 
  likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead to 
flash flooding. Do no enter or cross flowing water or water of 
unknown depth.  River banks and culverts can become unstable and 
unsafe. Please monitor later forecasts and be prepared to take 
action should Flash Flood Warnings be issued.


&&

$$

07
224 
WGUS63 KILX 262105
FFAILX

Flood Watch
National Weather Service Lincoln IL
405 PM CDT Sat Jun 26 2021

ILZ027>031-036>038-040>057-061-270600-
/O.CON.KILX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
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-
Including the cities of Winchester, Paris, Urbana, Toulon, Canton, 
Petersburg, Danville, Bloomington, Springfield, Tuscola, Normal, 
Champaign, Peoria, Beardstown, Monticello, Jacksonville, Lincoln, 
Havana, Eureka, Pekin, Charleston, Galesburg, Mattoon, Rushville, 
Clinton, Sullivan, Lacon, Decatur, Taylorville, and Shelbyville
405 PM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY MORNING...

The Flash Flood Watch continues for

* Portions of central Illinois...east central Illinois and west 
  central Illinois, including the following counties, in central 
  Illinois, Christian, De Witt, Logan, Macon, Marshall, Mason, 
  McLean, Menard, Peoria, Piatt, Sangamon, Shelby, Stark, Tazewell 
  and Woodford. In east central Illinois, Champaign, Coles, Douglas, 
  Edgar, Moultrie and Vermilion. In west central Illinois, Cass, 
  Fulton, Knox, Morgan, Schuyler and Scott.

* Through Sunday morning

* Thunderstorms through tonight will bring an additional 1-2" of 
  rain to areas that have already received heavy rain the last few 
  days. This may result in flash flooding, especially in low-lying 
  and flood prone areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead to 
Flash Flooding. Flash Flooding is a very dangerous situation. You 
should monitor later forecasts and be prepared to take action should 
Flash Flood Warnings be issued.

Do not enter or cross flowing water or water of unknown depth.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

&&

$$

NMB
863 
WGUS63 KILX 270052
FFAILX

Flood Watch
National Weather Service Lincoln IL
752 PM CDT Sat Jun 26 2021

ILZ027>031-036>038-040>045-047>053-270200-
/O.CAN.KILX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Piatt-Champaign-Cass-Menard-Scott-Morgan-
Sangamon-Christian-Macon-
Including the cities of Winchester, Urbana, Toulon, Canton, 
Petersburg, Bloomington, Springfield, Normal, Champaign, Peoria, 
Beardstown, Monticello, Jacksonville, Lincoln, Havana, Eureka, 
Pekin, Galesburg, Rushville, Clinton, Lacon, Decatur, and Taylorville
752 PM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of central Illinois...east 
central Illinois and west central Illinois, including the following 
areas, in central Illinois, Christian, De Witt, Logan, Macon, 
Marshall, Mason, McLean, Menard, Peoria, Piatt, Sangamon, Stark, 
Tazewell and Woodford. In east central Illinois, Champaign. In west 
central Illinois, Cass, Fulton, Knox, Morgan, Schuyler and Scott has 
been cancelled.

Heavy rain has ended, therefore the Flood Watch is cancelled.

$$

ILZ046-054>057-061-270900-
/O.CON.KILX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby-
Including the cities of Mattoon, Tuscola, Sullivan, Paris, Danville, 
Charleston, and Shelbyville
752 PM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT SUNDAY...

The Flash Flood Watch continues for

* Portions of central Illinois and east central Illinois, including 
  the following counties, in central Illinois, Shelby. In east 
  central Illinois, Coles, Douglas, Edgar, Moultrie and Vermilion.

* Until 7 AM CDT Sunday

* Training storms will continue to pose a threat for flash flooding 
  tonight, especially in low-lying and flood prone areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead to 
Flash Flooding. Flash Flooding is a very dangerous situation. You 
should monitor later forecasts and be prepared to take action should 
Flash Flood Warnings be issued.

Do not enter or cross flowing water or water of unknown depth.

Stay away or be swept away. River banks and culverts can become 
unstable and unsafe.

&&

$$

NMB
455 
WGUS63 KILX 270148
FFAILX

Flood Watch
National Weather Service Lincoln IL
848 PM CDT Sat Jun 26 2021

ILZ046-054>057-061-270300-
/O.CAN.KILX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby-
Including the cities of Danville, Sullivan, Tuscola, Charleston, 
Mattoon, Paris, and Shelbyville
848 PM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of central Illinois and east
central Illinois has been cancelled. While scattered showers and
thunderstorms will persist just north of I-70 through the
remainder of the evening, the threat for additional flooding rains
has ended.

$$

Barnes

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 10:03 AM CDTRiver Flood WarningILXFulton, Knox72 hr
Jun 24, 10:03 AM CDTRiver Flood WarningILXFulton60 hr
Jun 24, 12:49 PM CDTAreal Flood AdvisoryILXDeWitt, McLean, Piatt3 hr

Nearby

Flash Flood Watches in Illinois, 2021Every flash flood watch in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.