Alert archive / Illinois / Flash Flood Warnings in 2021

Flash Flood Warning 4, NWS Lincoln, IL

June 19, 2021Fulton County, Knox County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 19, 2021, 12:28 AM CDT for Fulton County, Knox County, Illinois. It was in force for 5 hr. 1 report 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, 12:28 AM CDT (05:28 UTC)
Expired
Jun 19, 2021, 5:20 AM CDT
In force
5 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Fulton County, IL, Knox County, IL

The radar

The Quad Cities radar (KDVN), 98 km from the middle of the area, began a volume at 05:28 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, 5:00 AM CDTHEAVY RAIN 1.271 E Canton, ILCOCORAHS STATION IL-FL-17 CANTON 1.2 ESE.

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

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 5.5 hours before the alert went out and 97 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, Davenport, at 00:00Z on 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 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, Davenport, at 00:00Z on 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939587897Sfc1 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
4 J/kg
Mixed-layer CIN
-335 J/kg
Mixed-layer LCL
2572 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

067 
WGUS53 KILX 190528
FFWILX
ILC057-095-191130-
/O.NEW.KILX.FF.W.0004.210619T0528Z-210619T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
1228 AM CDT Sat Jun 19 2021

The National Weather Service in Lincoln has issued a

* Flash Flood Warning for...
  Northern Fulton County in west central Illinois...
  Knox County in west central Illinois...

* Until 630 AM CDT Saturday.

* At 1228 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two 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...
  Galesburg, Canton, Abingdon, Knoxville, Farmington, Cuba, Avon,
  Yates City, St. David, Fairview, London Mills, Maquon, Gilson, East
  Galesburg, Dunfermline, Norris, St. Augustine, Marietta, Ellisville
  and Galesburg Airport.

This includes Interstate 74 between mile markers 44 and 68.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4085 8998 4049 8999 4050 9045 4101 9044
      4102 9019

FLASH FLOOD...RADAR INDICATED

$$

Deubelbeiss
2 follow-up statements
438 
WGUS73 KILX 190853
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
353 AM CDT Sat Jun 19 2021

ILC057-095-191130-
/O.CON.KILX.FF.W.0004.000000T0000Z-210619T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fulton-Knox-
353 AM CDT Sat Jun 19 2021

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 AM CDT
SATURDAY FOR NORTHERN FULTON AND KNOX COUNTIES...

At 353 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Two to locally four inches of rain have 
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...
Galesburg, Canton, Abingdon, Knoxville, Farmington, Cuba, Avon, Yates
City, St. David, Fairview, London Mills, Maquon, Gilson, East
Galesburg, Dunfermline, Norris, St. Augustine, Marietta, Ellisville
and Galesburg Airport.

This includes Interstate 74 between mile markers 44 and 68.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4085 8998 4049 8999 4050 9045 4101 9044
      4102 9019

FLASH FLOOD...RADAR INDICATED

$$

Deubelbeiss
927 
WGUS73 KILX 191020
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
520 AM CDT Sat Jun 19 2021

ILC057-095-191030-
/O.CAN.KILX.FF.W.0004.000000T0000Z-210619T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fulton-Knox-
520 AM CDT Sat Jun 19 2021

...THE FLASH FLOOD WARNING FOR NORTHERN FULTON AND KNOX COUNTIES IS
CANCELLED...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 4085 8998 4049 8999 4050 9045 4101 9044
      4102 9019

$$

Auten

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, 12:52 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, 3:29 AM CDTFlash Flood WarningILXChampaign, Douglas, Edgar, Vermilion3 hr
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.