Alert archive / Illinois / Flash Flood Warnings in 2014

Flash Flood Warning 33, NWS Lincoln, IL

September 2, 2014Clay County, Effingham County, Illinois

NWS Lincoln, IL issued this flash flood warning at Sep 2, 2014, 12:07 AM CDT for Clay County, Effingham County, Illinois. It was in force for 4 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: Sep 2, 2014, 12:07 AM CDT (05:07 UTC)
Expired: Sep 2, 2014, 4:00 AM CDT
In force: 4 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Clay County, IL, Effingham County, IL

The radar

The Evansville,IN radar (KVWX), 103 km from the middle of the area, began a volume at 05:08 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

Time	Report	Where	Remark
Sep 2, 3:47 AM CDT	FLOOD	Hord, IL	1-2 INCHES OF WATER OVER US ROUTE 45 NEAR HORD

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, 5.1 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 56 J/kg
Mixed-layer CIN: -180 J/kg
Mixed-layer LCL: 1331 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

454 
WGUS53 KILX 020507
FFWILX
ILC025-049-020900-
/O.NEW.KILX.FF.W.0033.140902T0507Z-140902T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1207 AM CDT TUE SEP 2 2014

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EFFINGHAM COUNTY IN SOUTH CENTRAL ILLINOIS...
  NORTHERN CLAY COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 400 AM CDT

* AT 1207 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RADAR ESTIMATES UP TO 3 INCHES OF RAIN HAS FALLEN IN
  THE PAST HOUR ACROSS A PORTION OF THE WARNING AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  EFFINGHAM...ALTAMONT...BIBLE GROVE...DIETERICH...EDGEWOOD...IOLA...
  LOUISVILLE...TEUTOPOLIS AND WATSON.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3877 8870 3891 8869 3891 8881 3914 8880
      3914 8838 3886 8836 3885 8835 3877 8835

$$

BAK

1 follow-up statement

584 
WGUS73 KILX 020852
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
352 AM CDT TUE SEP 2 2014

ILC025-049-020907-
/O.EXP.KILX.FF.W.0033.000000T0000Z-140902T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAY IL-EFFINGHAM IL-
352 AM CDT TUE SEP 2 2014

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EFFINGHAM AND
NORTHERN CLAY COUNTIES WILL BE ALLOWED TO EXPIRE AT 400 AM CDT...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3877 8870 3891 8869 3891 8881 3914 8880
      3914 8838 3886 8836 3885 8835 3877 8835

$$

BAK

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 12:43 AM CDT	Flash Flood Warning	ILX	Jasper	4 hr
Sep 2, 12:56 AM CDT	Tornado Warning	ILX	Crawford, Jasper	34 min
Sep 2, 1:06 AM CDT	Flash Flood Warning	ILX	Crawford	4 hr
Sep 2, 2:22 AM CDT	Areal Flood Advisory	ILX	Clay, Crawford, Lawrence, Richland	4 hr
Sep 2, 11:28 AM CDT	River Flood Warning	ILX	Clay, Richland	5 days

Nearby

Flash Flood Warnings in Illinois, 2014 Every flash flood warning in 2014

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.