Alert archive / Illinois / Flash Flood Warnings in 2017

Flash Flood Warning 13, NWS Lincoln, IL

May 4, 20178 counties in Illinois

NWS Lincoln, IL issued this flash flood warning at May 4, 2017, 7:45 AM CDT for 8 counties in Illinois. It was in force for 8 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
May 4, 2017, 7:45 AM CDT (12:45 UTC)
Expired
May 4, 2017, 3:45 PM CDT
In force
8 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Clark County, IL, Clay County, IL, Crawford County, IL, Cumberland County, IL, Effingham County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL

The radar

The Evansville,IN radar (KVWX), 87 km from the middle of the area, began a volume at 12:49 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
May 4, 12:00 PM CDTFLOODEffingham, ILSEVERAL LOW-LYING ROADS ARE FLOODED IN SCATTERED AREAS AROUND THE COUNTY
May 4, 12:25 PM CDTFLOODToledo, ILSEVERAL ROADS ACROSS THE COUNTY HAVE STANDING WATER, BUT NONE ARE CLOSED AT THIS TIME.
May 4, 1:11 PM CDTHEAVY RAIN 2.47Casey, ILSTORM TOTAL. APRS MESONET
May 4, 1:13 PM CDTHEAVY RAIN 3.321 Ese Effingham, ILSTORM TOTAL. APRS MESONET SITE
May 4, 1:16 PM CDTHEAVY RAIN 2.46Newton, ILSTORM TOTAL. APRS MESONET
May 4, 1:19 PM CDTHEAVY RAIN 2.393 S Olney, ILSTORM TOTAL. APRS MESONET
May 4, 1:20 PM CDTHEAVY RAIN 2.623 Ne Marshall, ILSTORM TOTAL. APRS MESONET
May 4, 1:20 PM CDTHEAVY RAIN 3.071 Ne Marshall, ILSTORM TOTAL. HADS MESONET
May 4, 1:23 PM CDTHEAVY RAIN 3.33Watson, ILSTORM TOTAL
May 4, 2:15 PM CDTHEAVY RAIN 3.284 Sse Effingham, ILSTORM TOTAL AT THE EFFINGHAM AIRPORT
May 4, 2:30 PM CDTFLOOD1 Ene Dennison, ILCLEAR CREEK ROAD CLOSED DUE TO FLOODING. SOCIAL MEDIA REPORT

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, 0.8 hours before the alert went out and 137 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 2017-05-04Temperature 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 2017-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
536 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

038 
WGUS53 KILX 041245
FFWILX
ILC023-025-033-035-049-079-101-159-042045-
/O.NEW.KILX.FF.W.0013.170504T1245Z-170504T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
745 AM CDT THU MAY 4 2017

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...
  Clark County in east central Illinois...
  Richland County in southeastern Illinois...
  Cumberland County in east central Illinois...
  Clay County in south central Illinois...
  Effingham County in south central Illinois...

* Until 345 PM CDT Thursday

* At 744 AM CDT, Doppler radar indicated heavy rain across the 
  warned area. Up to two inches of rain have already fallen, and 
  another inch or two will be possible. Flash flooding is expected 
  to begin shortly, especially on low lying county roads.

* Some locations that will experience flooding include...
  Effingham, Olney, Robinson, Flora, Lawrenceville, Marshall, Newton,
  Toledo, Sumner, Casey, Altamont, Neoga, Teutopolis, Greenup,
  Oblong, Palestine, Martinsville, Louisville, Clay City and Watson.

This includes the following highways...
 Interstate 57 between mile markers 142 and 168, and between mile
markers 173 and 179.
 Interstate 70 between mile markers 79 and 154.

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 3860 8816 3861 8870 3891 8870 3891 8881
      3922 8880 3922 8847 3937 8847 3938 8802
      3948 8801 3947 8753 3936 8753 3931 8762
      3922 8757 3914 8766 3896 8751 3886 8755
      3874 8750 3864 8762 3859 8762 3857 8814

$$

Shimon
2 follow-up statements
121 
WGUS73 KILX 041734
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
1234 PM CDT THU MAY 4 2017

ILC023-025-033-035-049-079-101-159-042045-
/O.CON.KILX.FF.W.0013.000000T0000Z-170504T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence-Crawford-Jasper-Clark-Richland-Cumberland-Clay-Effingham-
1234 PM CDT THU MAY 4 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR
LAWRENCE...CRAWFORD...JASPER...CLARK...RICHLAND...CUMBERLAND...CLAY
AND EFFINGHAM COUNTIES...

At 1228 PM CDT, Doppler radar indicated rain continues to move 
through southeast Illinois. The heaviest rainfall so far was close 
the I-70 corridor, where totals of 3 to 5 inches have occurred since 
yesterday afternoon. Further south, amounts of closer to 2 inches 
were estimated by radar from around Flora and Olney northeast to 
Robinson. Several area roads have standing water on them, and parts 
of state highways 1 and 250 in Lawrence County were closed due to 
the flooding. 

Some locations that will experience flooding include... 
Effingham, Olney, Robinson, Flora, Lawrenceville, Marshall, Newton, 
Toledo, Sumner, Casey, Altamont, Neoga, Teutopolis, Greenup, Oblong, 
Palestine, Martinsville, Louisville, Clay City and Watson.

Additional rainfall amounts of a quarter to half inch are 
possible through this afternoon in the warned area.

This includes the following highways...
 Interstate 57 between mile markers 142 and 179.
 Interstate 70 between mile markers 79 and 154.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

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

&&

LAT...LON 3860 8816 3861 8870 3891 8870 3891 8881
      3922 8880 3922 8847 3937 8847 3938 8802
      3948 8801 3947 8753 3936 8753 3931 8762
      3922 8757 3914 8766 3896 8751 3886 8755
      3874 8750 3864 8762 3859 8762 3857 8814

$$

Geelhart
950 
WGUS73 KILX 042047
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
347 PM CDT THU MAY 4 2017

ILC023-025-033-035-049-079-101-159-042055-
/O.EXP.KILX.FF.W.0013.000000T0000Z-170504T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lawrence-Crawford-Jasper-Clark-Richland-Cumberland-Clay-Effingham-
347 PM CDT THU MAY 4 2017

...THE FLASH FLOOD WARNING FOR LAWRENCE...CRAWFORD...JASPER...
CLARK...RICHLAND...CUMBERLAND...CLAY AND EFFINGHAM COUNTIES HAS
EXPIRED...

Flooding continues to be a problem in many areas, but a rapid 
increase in water levels is not anticipated. Because of the lack of 
flash flooding expected, this warning was converted to an areal 
flood warning, which will be in effect until 3:30 pm Friday. 

Please continue to heed any road closures.

LAT...LON 3860 8816 3861 8870 3891 8870 3891 8881
      3922 8880 3922 8847 3937 8847 3938 8802
      3948 8801 3947 8753 3936 8753 3931 8762
      3922 8757 3914 8766 3896 8751 3886 8755
      3874 8750 3864 8762 3859 8762 3857 8814

$$

Geelhart

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 7:43 AM CDTFlash Flood WarningILXChampaign, Christian, Coles, Douglas, Edgar, Macon and 4 more8 hr
May 4, 3:39 PM CDTAreal Flood WarningILXClark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more24 hr
May 4, 3:45 PM CDTAreal Flood WarningILXChampaign, Christian, Coles, Douglas, Edgar, Macon and 4 more24 hr

Nearby

Flash Flood Warnings in Illinois, 2017Every flash flood warning in 2017

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.