Alert archive / Illinois / Flash Flood Warnings in 2021

Flash Flood Warning 6, NWS Lincoln, IL

June 19, 20214 counties in Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 19, 2021, 3:29 AM CDT for 4 counties in Illinois. It was in force for 3 hr. 6 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
Jun 19, 2021, 3:29 AM CDT (08:29 UTC)
Expired
Jun 19, 2021, 6:30 AM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Champaign County, IL, Douglas County, IL, Edgar County, IL, Vermilion County, IL

The radar

The Indianapolis radar (KIND), 132 km from the middle of the area, began a volume at 08:30 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.

What was reported inside it

TimeReportWhereRemark
Jun 19, 6:00 AM CDTHEAVY RAIN 1.834 W Vermilion Regional, ILCOCORAHS STATION IL-VR-33 DANVILLE 4.2 NW.
Jun 19, 6:00 AM CDTHEAVY RAIN 2.881 Ene Saint Joseph, ILCOCORAHS STATION IL-CP-137 ST. JOSEPH 1.1 ENE.
Jun 19, 6:00 AM CDTHEAVY RAIN 3.48Ogden, ILCO-OP OBSERVER STATION OGDI2 OGDEN.
Jun 19, 6:00 AM CDTHEAVY RAIN 3.97Newman, ILCOCORAHS STATION IL-DG-15 , IL.
Jun 19, 6:30 AM CDTHEAVY RAIN 2.421 Nne Danville, ILCOCORAHS STATION IL-VR-14 DANVILLE.
Jun 19, 6:35 AM CDTHEAVY RAIN 2.311 Nne Danville, ILCOCORAHS STATION IL-VR-30 DANVILLE 0.7 NNW.

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, 8.5 hours before the alert went out and 74 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 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2124 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
2124 J/kg
Mixed-layer CIN
-145 J/kg
Mixed-layer LCL
1616 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted.

113 
WGUS53 KILX 190829
FFWILX
ILC019-041-045-183-191130-
/O.NEW.KILX.FF.W.0006.210619T0829Z-210619T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
329 AM CDT Sat Jun 19 2021

The National Weather Service in Lincoln has issued a

* Flash Flood Warning for...
  Northern Edgar County in east central Illinois...
  Vermilion County in east central Illinois...
  Southeastern Champaign County in east central Illinois...
  Northeastern Douglas County in east central Illinois...

* Until 630 AM CDT.

* At 328 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 2.5 inches of rain have 
  already fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Danville, Tuscola, St. Joseph, Georgetown, Westville, Tilton, Villa
  Grove, Catlin, Oakwood, Chrisman, Sidney, Homer, Ridge Farm,
  Newman, Ogden, Fairmount, Sidell, Fithian, Camargo and Belgium.

This includes the following highways...
 Interstate 57 between mile markers 210 and 211.
 Interstate 74 between mile markers 191 and 220.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3975 8774 3976 8828 4026 8801 4027 8753
      3948 8753

FLASH FLOOD...RADAR INDICATED

$$

Deubelbeiss

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:15 PM CDTSpecial Weather StatementILXCrawford30 min
Jun 18, 7:52 PM CDTSpecial Weather StatementILXMorgan23 min
Jun 18, 8:08 PM CDTSpecial Weather StatementILXSangamon52 min
Jun 18, 8:22 PM CDTSevere Thunderstorm WarningILXSangamon38 min
Jun 18, 8:43 PM CDTSevere Thunderstorm WarningILXChristian, Sangamon47 min
Jun 18, 9:13 PM CDTSpecial Weather StatementILXClark32 min
Jun 18, 9:44 PM CDTSevere Thunderstorm WarningILXClark, Cumberland46 min
Jun 18, 10:24 PM CDTSevere Thunderstorm WarningILXKnox, Peoria36 min
Jun 18, 10:32 PM CDTSevere Thunderstorm WarningILXClark, Crawford25 min
Jun 18, 11:06 PM CDTSevere Thunderstorm WarningILXKnox39 min
Jun 18, 11:29 PM CDTSevere Thunderstorm WarningILXClark46 min
Jun 18, 11:47 PM CDTSevere Thunderstorm WarningILXFulton, Knox, Peoria43 min
Jun 18, 11:57 PM CDTTornado WarningILXFulton, Knox33 min
Jun 19, 12:13 AM CDTSevere Thunderstorm WarningILXFulton, Mason, Peoria, Tazewell47 min
Jun 19, 12:26 AM CDTFlash Flood WarningILXClark6 hr
Jun 19, 12:28 AM CDTFlash Flood WarningILXFulton, Knox5 hr
Jun 19, 12:52 AM CDTSevere Thunderstorm WarningILXLogan, McLean, Mason, Tazewell38 min
Jun 19, 1:19 AM CDTSevere Thunderstorm WarningILXLogan, McLean, Tazewell41 min
Jun 19, 1:23 AM CDTSevere Thunderstorm WarningILXMcLean52 min
Jun 19, 1:53 AM CDTFlash Flood WarningILXColes, Douglas, Edgar5 hr
Jun 19, 1:59 AM CDTSevere Thunderstorm WarningILXEdgar46 min
Jun 19, 2:19 AM CDTSevere Thunderstorm WarningILXMcLean41 min
Jun 19, 3:37 AM CDTSpecial Weather StatementILXChampaign, Douglas, Edgar, Vermilion53 min
Jun 19, 7:06 AM CDTSevere Thunderstorm WarningILXChristian, Macon, Sangamon24 min
Jun 19, 7:29 AM CDTSevere Thunderstorm WarningILXChristian, Macon, Shelby31 min
Jun 19, 10:19 AM CDTSevere Thunderstorm WarningILXMorgan, Sangamon41 min

Nearby

Flash Flood Warnings in Illinois, 2021Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.