Alert archive / Illinois / Flash Flood Warnings in 2018

Flash Flood Warning 32, NWS Lincoln, IL

September 8, 20185 counties in Illinois

NWS Lincoln, IL issued this flash flood warning at Sep 8, 2018, 1:40 PM CDT for 5 counties in Illinois. It was in force for 4 hr. 11 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
Sep 8, 2018, 1:40 PM CDT (18:40 UTC)
Expired
Sep 8, 2018, 6:07 PM CDT
In force
4 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Clay County, IL, Crawford County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL

The radar

The Evansville,IN radar (KVWX), 63 km from the middle of the area, began a volume at 18:41 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
Sep 8, 2:50 PM CDTFLASH FLOODLawrenceville, ILSIX TO EIGHT INCHES OF WATER COVERING 4TH STREET BETWEEN STATE STREET AND JEFFERSON STREET IN LAWRENCEVILLE
Sep 8, 2:50 PM CDTHEAVY RAIN 6.5Olney, ILPUBLIC REPORT VIA TWITTER
Sep 8, 2:50 PM CDTHEAVY RAIN 6.5Olney, ILPUBLIC REPORT VIA TWITTER.
Sep 8, 3:00 PM CDTFLASH FLOOD1 Se Clay City, ILMANY COUNTY ROADS FLOODED IN EAST AND SOUTHEAST CLAY COUNTY. SIGNS ARE BEING POSTED.
Sep 8, 3:00 PM CDTHEAVY RAIN 4.5Robinson, ILSOCIAL MEDIA REPORT
Sep 8, 3:04 PM CDTFLASH FLOOD2 W Olney, ILMANY COUNTY ROADS ARE COVERED WITH WATER. HWY 250 FLOODED BY OLNEY AIRPORT AND NEAR THE HIGH SCHOOL.
Sep 8, 3:06 PM CDTFLASH FLOOD3 S Newton, ILWATER COVERING MANY ROADS IN JASPER COUNTY - INCLUDING STATE HWY 130 SOUTH OF NEWTON AND STATE HWY 33 EAST OF NEWTON.
Sep 8, 3:10 PM CDTFLASH FLOOD1 S Lawrenceville, ILMANY COUNTY ROADS FLOODED ACROSS LAWRENCE COUNTY - INCLUDING IN THE CITY OF LAWRENCEVILLE
Sep 8, 3:12 PM CDTFLASH FLOOD3 W Robinson, ILMANY COUNTY ROADS ARE FLOODED.
Sep 8, 5:00 PM CDTHEAVY RAIN 6.033 W Birds, IL
Sep 8, 5:00 PM CDTHEAVY RAIN 6.583 Nw Hutsonville, ILRAINFALL SINCE MIDNIGHT

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 12:00Z, 6.7 hours before the alert went out and 164 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 12:00Z on 2018-09-08Temperature 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 12:00Z on 2018-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
514 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

424 
WGUS53 KILX 081840
FFWILX
ILC025-033-079-101-159-090045-
/O.NEW.KILX.FF.W.0032.180908T1840Z-180909T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
140 PM CDT SAT SEP 8 2018

The National Weather Service in Lincoln has issued a

* Flash Flood Warning for...
  Lawrence County in southeastern Illinois...
  Crawford County in east central Illinois...
  Jasper County in southeastern Illinois...
  Richland County in southeastern Illinois...
  Eastern Clay County in south central Illinois...

* Until 745 PM CDT Saturday.

* At 139 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Rainfall rates of 4 inches per 
  hour in southeast Clay County and southwest Richland County. Flash 
  flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Vincennes, Olney, Robinson, Flora, Lawrenceville, Newton, Sumner,
  Oblong, Palestine, Clay City, St. Francisville, Noble, Hutsonville,
  Flat Rock, Ste. Marie, Willow Hill, Parkersburg, Claremont, Calhoun
  and Sailor Springs.

LAT...LON 3857 8814 3860 8816 3861 8848 3906 8827
      3915 8765 3912 8763 3911 8765 3906 8757
      3899 8758 3896 8751 3890 8752 3889 8754
      3886 8755 3879 8750 3869 8752 3866 8760
      3859 8762 3857 8765

$$

Shimon
2 follow-up statements
809 
WGUS73 KILX 082032
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
332 PM CDT SAT SEP 8 2018

ILC025-033-079-101-159-090045-
/O.CON.KILX.FF.W.0032.000000T0000Z-180909T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence-Crawford-Jasper-Richland-Clay-
332 PM CDT SAT SEP 8 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
LAWRENCE...CRAWFORD...JASPER...RICHLAND AND EASTERN CLAY COUNTIES...

At 330 PM CDT, local law enforcement reported many flooded roads in 
the warning area. Radar indicated rainfall amounts of 3 inches to as 
much as 8 inches heavy rain in the warning area. Flash flooding is 
already occurring.

Some locations that will experience flooding include...
Vincennes, Olney, Robinson, Flora, Lawrenceville, Newton, Sumner,
Oblong, Palestine, Clay City, St. Francisville, Noble, Hutsonville,
Flat Rock, Ste. Marie, Willow Hill, Parkersburg, Claremont, Calhoun
and Sailor Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3857 8814 3860 8816 3861 8848 3906 8827
      3915 8765 3912 8763 3911 8765 3906 8757
      3899 8758 3896 8751 3890 8752 3889 8754
      3886 8755 3879 8750 3869 8752 3866 8760
      3859 8762 3857 8765

$$

Shimon
231 
WGUS73 KILX 082307
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
607 PM CDT SAT SEP 8 2018

ILC025-033-079-101-159-082315-
/O.CAN.KILX.FF.W.0032.000000T0000Z-180909T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence-Crawford-Jasper-Richland-Clay-
607 PM CDT SAT SEP 8 2018

...THE FLASH FLOOD WARNING FOR LAWRENCE...CRAWFORD...JASPER...
RICHLAND AND EASTERN CLAY COUNTIES IS CANCELLED...

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

LAT...LON 3857 8814 3860 8816 3861 8848 3906 8827
      3915 8765 3912 8763 3911 8765 3906 8757
      3899 8758 3896 8751 3890 8752 3889 8754
      3886 8755 3879 8750 3869 8752 3866 8760
      3859 8762 3857 8765

$$

Bak

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 2:16 AM CDTFlash Flood WarningILXClay, Richland6 hr
Sep 8, 3:29 AM CDTFlash Flood WarningILXJasper4 hr
Sep 8, 5:47 AM CDTFlash Flood WarningILXClark, Crawford3 hr
Sep 8, 7:46 AM CDTAreal Flood AdvisoryILXLawrence3 hr
Sep 8, 9:36 AM CDTAreal Flood WarningILXClark, Clay, Crawford, Effingham, Jasper, Lawrence and 1 more9 hr
Sep 8, 10:31 AM CDTRiver Flood WarningILXCrawford, Jasper18 hr
Sep 8, 6:17 PM CDTAreal Flood WarningILXClay, Crawford, Effingham, Jasper, Lawrence, Richland12 hr

Nearby

Flash Flood Warnings in Illinois, 2018Every flash flood warning in 2018

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.