Alert archive / Illinois / Flood Watches in 2021

Flood Watch 1, NWS Lincoln, IL

October 24, 20214 counties in Illinois

NWS Lincoln, IL issued this flood watch at Oct 24, 2021, 6:15 AM CDT for 4 counties in Illinois. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued
Oct 24, 2021, 6:15 AM CDT (11:15 UTC)
Expired
Oct 25, 2021, 2:43 AM CDT
In force
20 hr
Issued by
NWS Lincoln, IL
Flood severity
None

Counties Macon County, IL, Morgan County, IL, Sangamon County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 61 km from the middle of the area, began a volume at 11:14 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 00:00Z, 11.3 hours before the alert went out and 114 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 00:00Z on 2021-10-24Temperature 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 00:00Z on 2021-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 square meters per square second.19395878Sfc1 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
1349 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
306 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

738 
WGUS63 KILX 241115
FFAILX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Lincoln IL
615 AM CDT Sun Oct 24 2021

ILZ049>051-053-242130-
/O.NEW.KILX.FA.A.0001.211024T1115Z-211025T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Scott-Morgan-Sangamon-Macon-
Including the cities of Springfield, Jacksonville, Winchester, and 
Decatur
615 AM CDT Sun Oct 24 2021

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

The National Weather Service in Lincoln has issued a

* Flood Watch for portions of central Illinois and west central 
  Illinois, including the following counties, in central Illinois, 
  Macon and Sangamon. In west central Illinois, Morgan and Scott.

* Through Monday morning.

* Moderate to heavy rainfall is expected, with rain moving in from 
  the south early this morning, continuing through the day and well
  into the evening. Widespread rainfall totals of 1 to 3 inches are 
  expected across central Illinois, with localized amounts of 5-7 
  inches possible along and north of I-72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood 
Warnings. Those living in areas prone to flooding should be prepared 
to take action should flooding develop.

&&

$$

ILZ027>031-036>038-040>048-055-242130-
/O.CON.KILX.FF.A.0006.000000T0000Z-211025T1200Z/
/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-Douglas-
Including the cities of Beardstown, Lincoln, Rushville, Clinton, 
Normal, Champaign, Peoria, Urbana, Monticello, Toulon, Canton, 
Tuscola, Havana, Pekin, Petersburg, Danville, Bloomington, Eureka, 
Galesburg, and Lacon
615 AM CDT Sun Oct 24 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY 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, De Witt, Logan, Marshall, Mason, McLean, Menard, Peoria, 
  Piatt, Stark, Tazewell and Woodford. In east central Illinois, 
  Champaign, Douglas and Vermilion. In west central Illinois, Cass, 
  Fulton, Knox and Schuyler.

* Through Monday morning.

* Moderate to heavy rainfall is expected, with rain moving in from 
  the south early this morning, continuing through the day and well
  into the evening. Widespread rainfall totals of 1 to 3 inches are 
  expected across central Illinois, with localized amounts of 5-7 
  inches possible in between I-72 and I-80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

MJA
3 follow-up statements
008 
WGUS63 KILX 241713
FFAILX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Lincoln IL
1213 PM CDT Sun Oct 24 2021

ILZ051-250115-
/O.CAN.KILX.FA.A.0001.000000T0000Z-211025T1200Z/
/O.EXB.KILX.FF.A.0006.000000T0000Z-211025T1700Z/
/00000.0.DR.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sangamon-
Including the cities of Springfield
1213 PM CDT Sun Oct 24 2021

...FLASH FLOOD WATCH FOR A DAM FLOODGATE RELEASE IN EFFECT THROUGH 
MONDAY MORNING...
...FLOOD WATCH IS CANCELLED...

The National Weather Service in Lincoln has expanded the

* Flash Flood Watch to include a portion of central Illinois, 
  including the following area, Sangamon.

* Through Monday morning.

At 1213 PM CDT, Dam operators reported the Spaulding Dam on Sugar 
Creek may experience a significant floodgate release during the 
watch period.

The release of water will cause rapid rises on Sugar Creek,  
downstream of the dam. Rapid flooding of low lying areas along the 
creek may result.

The rest of Sangamon County remains under the Flash Flood Watch due 
to expectations of heavy rain over the next 48 hours.

This Flash Flood Watch replaces the previous Flood Watch in effect 
for Sangamon county.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

The Flood Watch for a portion of central Illinois, including the 
following area, Sangamon has been cancelled.

$$

ILZ027>031-036>038-040>048-055-250115-
/O.CON.KILX.FF.A.0006.000000T0000Z-211025T1200Z/
/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-Douglas-
Including the cities of Beardstown, Lincoln, Rushville, Clinton, 
Normal, Champaign, Peoria, Urbana, Monticello, Toulon, Canton, 
Tuscola, Havana, Pekin, Petersburg, Danville, Bloomington, Eureka, 
Galesburg, and Lacon
1213 PM CDT Sun Oct 24 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY 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, De Witt, Logan, Marshall, Mason, McLean, Menard, Peoria, 
  Piatt, Stark, Tazewell and Woodford. In east central Illinois, 
  Champaign, Douglas and Vermilion. In west central Illinois, Cass, 
  Fulton, Knox and Schuyler.

* Through Monday morning.

* Moderate to heavy rainfall is expected, with rain moving in from 
  the south early this morning, continuing through the day and well
  into the evening. Widespread rainfall totals of 1 to 3 inches are 
  expected across central Illinois, with localized amounts of 5-7 
  inches possible in between I-72 and I-80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

ILZ049-050-053-250115-
/O.CON.KILX.FA.A.0001.000000T0000Z-211025T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Scott-Morgan-Macon-
Including the cities of Jacksonville, Winchester, and Decatur
1213 PM CDT Sun Oct 24 2021

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

The Flood Watch continues for

* Portions of central Illinois and west central Illinois, including 
  the following counties, in central Illinois, Macon. In west 
  central Illinois, Morgan and Scott.

* Through Monday morning.

* Moderate to heavy rainfall is expected, with rain moving in from 
  the south early this morning, continuing through the day and well
  into the evening. Widespread rainfall totals of 1 to 3 inches are 
  expected across central Illinois, with localized amounts of 5-7 
  inches possible along and north of I-72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood 
Warnings. Those living in areas prone to flooding should be prepared 
to take action should flooding develop.

&&

$$

Shimon
657 
WGUS63 KILX 242130
FFAILX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Lincoln IL
430 PM CDT Sun Oct 24 2021

ILZ055-242230-
/O.CAN.KILX.FF.A.0006.000000T0000Z-211025T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Douglas-
Including the city of Tuscola
430 PM CDT Sun Oct 24 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for a portion of east central Illinois has
been cancelled. 

$$

ILZ051-250900-
/O.EXA.KILX.FA.A.0001.000000T0000Z-211025T1200Z/
/O.CON.KILX.FF.A.0006.000000T0000Z-211025T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sangamon-
Including the city of Springfield
430 PM CDT Sun Oct 24 2021

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

The National Weather Service in Lincoln has expanded the

* Flood Watch to include a portion of central Illinois, 
  including the following area, Sangamon. 

* Through Monday morning

* Moderate to heavy rainfall will occur late this afternoon and evening.
  Storm total rainfall of 2 to 4 inches is expected, with 
  localized amounts of 4 to 5 inches possible along and north of 
  I-72. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

The Flash Flood Watch continues for

* A portion of central Illinois, including the following area, 
  Sangamon. 

* Through Monday morning

At 1213 PM CDT, Dam operators reported the Spaulding Dam on Sugar
Creek may experience a significant floodgate release during the 
watch period.

The release of water will cause rapid rises on Sugar Creek,
downstream of the dam. Rapid flooding of low lying areas along
the creek may result.

The rest of Sangamon County remains under the Flash Flood Watch
due to expectations of heavy rain over the next 12 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

The Flood Watch for a portion of central Illinois, including the
following area, Sangamon has been cancelled.

$$

ILZ027>031-036>038-040>048-250900-
/O.CON.KILX.FF.A.0006.000000T0000Z-211025T1200Z/
/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-
Including the cities of Galesburg, Toulon, Peoria, Lacon, Eureka,
Canton, Pekin, Bloomington, Normal, Rushville, Havana, Lincoln, 
Clinton, Monticello, Champaign, Urbana, Danville, Beardstown, 
and Petersburg
430 PM CDT Sun Oct 24 2021

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

The Flash Flood Watch continues for

* Portions of central Illinois, east central Illinois, and west 
  central Illinois, including the following areas, in central 
  Illinois, De Witt, Logan, Marshall, Mason, McLean, Menard, 
  Peoria, Piatt, Stark, Tazewell, and Woodford. In east central 
  Illinois, Champaign and Vermilion. In west central Illinois, 
  Cass, Fulton, Knox, and Schuyler. 

* Through Monday morning

* Moderate to heavy rainfall will occur late this afternoon and
  evening. Storm total rainfall of 2 to 4 inches is expected, with
  localized amounts of 4 to 5 inches possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

ILZ049-050-053-250900-
/O.CON.KILX.FA.A.0001.000000T0000Z-211025T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Scott-Morgan-Macon-
Including the cities of Winchester, Jacksonville, and Decatur
430 PM CDT Sun Oct 24 2021

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

The Flood Watch continues for

* Portions of central Illinois and west central Illinois, 
  including the following areas, in central Illinois, Macon. In 
  west central Illinois, Morgan and Scott. 

* Through Monday morning

* Moderate to heavy rainfall will occur late this afternoon and 
  evening. Storm total rainfall of 2 to 4 inches is expected, with
  localized amounts of 5-7 inches possible across western Morgan 
  County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

&&

$$
231 
WGUS63 KILX 250743
FFAILX

Flood Watch
National Weather Service Lincoln IL
243 AM CDT Mon Oct 25 2021

ILZ027>031-036>038-040>048-250845-
/O.CAN.KILX.FF.A.0006.000000T0000Z-211025T1200Z/
/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-
Including the cities of Beardstown, Lincoln, Rushville, Clinton, 
Normal, Champaign, Peoria, Urbana, Monticello, Toulon, Canton, 
Havana, Pekin, Petersburg, Danville, Bloomington, Eureka, Galesburg, 
and Lacon
243 AM CDT Mon Oct 25 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, De Witt, Logan, Marshall, Mason, McLean, 
Menard, Peoria, Piatt, Stark, Tazewell and Woodford. In east central 
Illinois, Champaign and Vermilion. In west central Illinois, Cass, 
Fulton, Knox and Schuyler has been cancelled.

The Flood Watch is cancelled. Flooding is no longer expected to pose 
a threat. Please continue to heed remaining road closures.

$$

ILZ051-251700-
/O.CAN.KILX.FA.A.0001.000000T0000Z-211025T1200Z/
/O.CON.KILX.FF.A.0006.000000T0000Z-211025T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sangamon-
Including the cities of Springfield
243 AM CDT Mon Oct 25 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL NOON CDT TODAY...
...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch continues for

* A portion of central Illinois, including the following area, 
  Sangamon.

* Until Noon CDT today.

* Dam operators reported the Spaulding Dam on Sugar Creek may open 
  floodgates during this watch period.

* The release of water could cause rises on Sugar Creek, downstream 
  of the dam.  Flooding of low lying areas along the creek may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

The Flood Watch for a portion of central Illinois, including the 
following area, Sangamon has been cancelled.

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

$$

ILZ049-050-053-250845-
/O.CAN.KILX.FA.A.0001.000000T0000Z-211025T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Scott-Morgan-Macon-
Including the cities of Jacksonville, Winchester, and Decatur
243 AM CDT Mon Oct 25 2021

...FLOOD WATCH IS CANCELLED...

The Flood Watch for portions of central Illinois and west central 
Illinois, including the following areas, in central Illinois, Macon. 
In west central Illinois, Morgan and Scott has been cancelled.

The Flood Watch is cancelled. Flooding is no longer expected to pose 
a threat. Please continue to heed remaining road closures.

$$

MJA

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 24, 5:03 AM CDTFlash Flood WarningILXMorgan, Scott3 hr
Oct 24, 10:08 AM CDTRiver Flood WarningILXPiatt8 days
Oct 24, 3:35 PM CDTSpecial Weather StatementILXFulton25 min
Oct 24, 4:00 PM CDTSpecial Weather StatementILXPeoria30 min
Oct 24, 5:00 PM CDTFlash Flood WarningILXFulton, Schuyler3 hr
Oct 24, 5:39 PM CDTSpecial Weather StatementILXMcLean51 min
Oct 24, 5:39 PM CDTSevere Thunderstorm WarningILXCass, Mason, Morgan, Sangamon, Schuyler, Scott51 min
Oct 24, 5:56 PM CDTSevere Thunderstorm WarningILXCass, Menard, Morgan, Sangamon, Scott49 min
Oct 24, 6:06 PM CDTTornado WarningILXCass, Morgan, Scott24 min
Oct 24, 6:26 PM CDTSevere Thunderstorm WarningILXChampaign, McLean, Vermilion34 min
Oct 24, 6:28 PM CDTSevere Thunderstorm Warning Considerable damage threatILXCass, Mason, Menard, Morgan, Sangamon, Tazewell62 min
Oct 24, 6:37 PM CDTFlash Flood WarningILXCass, Morgan, Scott3 hr
Oct 24, 6:38 PM CDTTornado WarningILXMenard, Sangamon26 min

Nearby

Flood Watches in Illinois, 2021Every 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.