Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 62, NWS Lincoln, IL

July 3, 2011Coles County, Cumberland County, Shelby County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 3, 2011, 12:05 AM CDT for Coles County, Cumberland County, Shelby County, Illinois. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 3, 2011, 12:05 AM CDT (05:05 UTC)
Expired: Jul 3, 2011, 5:16 AM CDT
In force: 5 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Coles County, IL, Cumberland County, IL, Shelby County, IL

The radar

The Lincoln radar (KILX), 116 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.1 hours before the alert went out and 84 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: 5007 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1004 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

339 
WGUS53 KILX 030505
FFWILX
ILC029-035-173-031100-
/O.NEW.KILX.FF.W.0062.110703T0505Z-110703T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1205 AM CDT SUN JUL 3 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL SHELBY COUNTY IN CENTRAL ILLINOIS...
  NORTHERN CUMBERLAND COUNTY IN EAST CENTRAL ILLINOIS...
  SOUTHERN COLES COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 600 AM CDT

* AT 1204 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RADAR ESTIMATED UP TO 2 INCHES OF RAIN HAD FALLEN
  ACROSS THE WARNING AREA IN THE PAST HOUR.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  JANESVILLE...LERNA...NEOGA AND WINDSOR.

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 3931 8802 3929 8866 3946 8867 3946 8858
      3945 8858 3945 8847 3947 8846 3949 8801

$$

BAK

1 follow-up statement

847 
WGUS73 KILX 031016
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
516 AM CDT SUN JUL 3 2011

ILC029-035-173-031032-
/O.CAN.KILX.FF.W.0062.000000T0000Z-110703T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SHELBY IL-COLES IL-CUMBERLAND IL-
516 AM CDT SUN JUL 3 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN
CUMBERLAND...SOUTHERN COLES AND EAST CENTRAL SHELBY COUNTIES IS
CANCELLED...

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.

LAT...LON 3931 8802 3929 8866 3946 8867 3946 8858
      3945 8858 3945 8847 3947 8846 3949 8801

$$

CHURCHILL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 7:15 PM CDT	Special Weather Statement	ILX	Vermilion	30 min
Jul 2, 7:34 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	56 min
Jul 2, 8:56 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	34 min
Jul 2, 10:54 PM CDT	Severe Thunderstorm Warning	ILX	Coles	36 min
Jul 2, 11:15 PM CDT	Flash Flood Warning	ILX	Edgar	5 hr
Jul 3, 6:46 PM CDT	Areal Flood Advisory	ILX	Clark	3 hr

Nearby

Flash Flood Warnings in Illinois, 2011 Every flash flood warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.