Alert archive / Illinois / Flash Flood Warnings in 2021

Flash Flood Warning 34, NWS Lincoln, IL

October 24, 2021Fulton County, Schuyler County, Illinois

NWS Lincoln, IL issued this flash flood warning at Oct 24, 2021, 5:00 PM CDT for Fulton County, Schuyler 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
Oct 24, 2021, 5:00 PM CDT (22:00 UTC)
Expired
Oct 24, 2021, 8:00 PM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Fulton County, IL, Schuyler County, IL

The radar

The Lincoln radar (KILX), 102 km from the middle of the area, began a volume at 21:59 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
Oct 24, 6:30 PM CDTFLASH FLOODBryant, ILWATER FLOWING OVER RT. 100.
Oct 24, 6:50 PM CDTFLASH FLOOD4 N Rushville, ILVEHICLE SWEPT OFF ROAD AND DRIVER WAS RESCUED. NUMEROUS OTHER REPORTS OF FLOODING IN THE COUNTY ALONG THE LAMOINE RIVER BASIN.
Oct 24, 7:54 PM CDTHEAVY RAIN 5Lewistown, ILTOTAL RAIN SINCE 2 AM.

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 12:00Z, 10.0 hours before the alert went out and 160 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 12:00Z 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, Davenport, at 12:00Z on 2021-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
972 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

882 
WGUS53 KILX 242200
FFWILX
ILC057-169-250100-
/O.NEW.KILX.FF.W.0034.211024T2200Z-211025T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
500 PM CDT Sun Oct 24 2021

The National Weather Service in Lincoln has issued a

* Flash Flood Warning for...
  Central Fulton County in west central Illinois...
  Central Schuyler County in west central Illinois...

* Until 800 PM CDT.

* At 459 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 2 inches of rain have 
  fallen. The expected rainfall rate is 2 inches in 1 hour. 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...
  Canton, Rushville, Lewistown, Cuba, Astoria, Vermont, St. David, 
  Ipava, Littleton, Table Grove, Dunfermline, Bernadotte, Bryant, 
  Banner, Camden, Duncan Mills, Ray and Little America.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4011 9087 4028 9058 4028 9045 4036 9045
      4062 9001 4062 8988 4051 8988 3998 9060
      4000 9060 4002 9062 4003 9061 4002 9063
      4005 9066 4005 9067 4008 9067 4008 9070
      4009 9071 4010 9070

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2 INCHES IN 1 HOUR

$$

37
1 follow-up statement
175 
WGUS73 KILX 250059
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
759 PM CDT Sun Oct 24 2021

ILC057-169-250109-
/O.EXP.KILX.FF.W.0034.000000T0000Z-211025T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fulton IL-Schuyler IL-
759 PM CDT Sun Oct 24 2021

...FLASH FLOOD WARNING AT 8 PM CDT THIS EVENING FOR CENTRAL FULTON 
AND CENTRAL SCHUYLER COUNTIES HAS BEEN REPLACED WITH A FLOOD 
WARNING...

LAT...LON 4011 9087 4028 9058 4028 9045 4036 9045
      4062 9001 4062 8988 4051 8988 3998 9060
      4000 9060 4002 9062 4003 9061 4002 9063
      4005 9066 4005 9067 4008 9067 4008 9070
      4009 9071 4010 9070

$$

37

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, 6:15 AM CDTFlood WatchILXMacon, Morgan, Sangamon, Scott20 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, 5:39 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

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.