Alert archive / Illinois / Flash Flood Warnings in 2022

Flash Flood Warning 49, NWS Lincoln, IL

August 29, 2022Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at Aug 29, 2022, 10:51 PM CDT for Champaign County, Vermilion County, Illinois. It was in force for 3 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 29, 2022, 10:51 PM CDT (03:51 UTC)
Expired: Aug 30, 2022, 2:00 AM CDT
In force: 3 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Champaign County, IL, Vermilion County, IL

The radar

The Indianapolis radar (KIND), 120 km from the middle of the area, began a volume at 03:52 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.

What was reported inside it

Time	Report	Where	Remark
Aug 29, 10:55 PM CDT	HEAVY RAIN 1.64	2 Ese Urbana, IL	MESONET STATION 8474D 2 ESE URBANA. 6-HOUR RAINFALL TOTAL.
Aug 29, 10:55 PM CDT	HEAVY RAIN 1.86	3 Wsw Homer, IL	MESONET STATION 7287D 3 WSW HOMER. 6-HOUR RAINFALL TOTAL.
Aug 29, 11:15 PM CDT	HEAVY RAIN 2.31	2 N Homer, IL	STORM TOTAL. 0.81 INCHES FELL BETWEEN 930 PM AND 11 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.9 hours before the alert went out and 84 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2551 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

As transmitted.

568 
WGUS53 KILX 300351
FFWILX
ILC019-183-300700-
/O.NEW.KILX.FF.W.0049.220830T0351Z-220830T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
1051 PM CDT Mon Aug 29 2022

The National Weather Service in Lincoln has issued a

* Flash Flood Warning for...
  East Central Champaign County in east central Illinois...
  Southern Vermilion County in east central Illinois...

* Until 200 AM CDT.

* At 1051 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 4 inches of rain have 
  fallen. Additional rainfall amounts up to 1 inch are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Champaign, Urbana, Savoy, St. Joseph, Georgetown, Westville, 
  Tilton, Catlin, Oakwood, Sidney, Homer, Ridge Farm, Ogden, 
  Fairmount, Fithian, Belgium, Muncie, Royal, Indianola and Jamaica.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4004 8753 4000 8753 3997 8753 3994 8753
      3991 8753 3988 8753 3988 8758 3987 8756
      3987 8760 3987 8762 3988 8762 3988 8764
      4007 8826 4025 8815

FLASH FLOOD...RADAR INDICATED

$$

37

2 follow-up statements

667 
WGUS73 KILX 300505
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
1205 AM CDT Tue Aug 30 2022

ILC019-183-300700-
/O.CON.KILX.FF.W.0049.000000T0000Z-220830T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Champaign IL-Vermilion IL-
1205 AM CDT Tue Aug 30 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 2 AM CDT EARLY THIS 
MORNING FOR EAST CENTRAL CHAMPAIGN AND SOUTHERN VERMILION COUNTIES...

At 1204 AM CDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Up to 5 inches of rain have 
fallen. Flash flooding is ongoing.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Urbana, St. Joseph, Georgetown, Westville, Catlin, Oakwood, Homer, 
  Ridge Farm, Ogden, Fairmount, Fithian, Muncie, Royal, Indianola 
  and Jamaica.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4011 8772 3998 8758 3993 8754 3988 8764
      3999 8794 4008 8817 4022 8807

FLASH FLOOD...RADAR INDICATED

$$

37

379 
WGUS73 KILX 300657
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
157 AM CDT Tue Aug 30 2022

ILC019-183-300707-
/O.EXP.KILX.FF.W.0049.000000T0000Z-220830T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Champaign IL-Vermilion IL-
157 AM CDT Tue Aug 30 2022

...FLASH FLOOD WARNING WILL EXPIRE AT 2 AM CDT EARLY THIS MORNING 
FOR EAST CENTRAL CHAMPAIGN AND SOUTHERN VERMILION COUNTIES...

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

LAT...LON 4011 8772 3998 8758 3993 8754 3988 8764
      3999 8794 4008 8817 4022 8807

$$

Geelhart

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 7:14 PM CDT	Flash Flood Warning	ILX	Cass, Menard, Sangamon	3 hr
Aug 29, 7:15 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	60 min
Aug 29, 7:31 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Macon, Piatt	44 min
Aug 29, 7:33 PM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	4 hr
Aug 29, 7:38 PM CDT	Special Weather Statement	ILX	Sangamon	37 min
Aug 29, 7:52 PM CDT	Severe Thunderstorm Warning	ILX	Macon, Moultrie, Piatt	38 min
Aug 29, 8:08 PM CDT	Special Weather Statement	ILX	Cass, Menard, Morgan	52 min
Aug 29, 8:15 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	34 min
Aug 29, 8:17 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Moultrie, Piatt	43 min
Aug 29, 8:28 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Moultrie, Shelby	32 min
Aug 29, 8:59 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Edgar	31 min
Aug 29, 9:17 PM CDT	Flash Flood Warning	ILX	Morgan, Sangamon	3 hr
Aug 29, 9:29 PM CDT	Special Weather Statement	ILX	Clark, Coles, Cumberland, Edgar, Effingham	31 min
Aug 29, 9:57 PM CDT	Special Weather Statement	ILX	Coles, Shelby	33 min
Aug 29, 10:07 PM CDT	Flash Flood Warning	ILX	Coles, Moultrie, Shelby	3 hr
Aug 29, 10:22 PM CDT	Flash Flood Warning	ILX	Clark, Edgar	3 hr

Nearby

Flash Flood Warnings in Illinois, 2022 Every flash flood warning in 2022

Sources

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