Alert archive / Illinois / Flash Flood Warnings in 2014

Flash Flood Warning 20, NWS Lincoln, IL

June 30, 2014Knox County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 30, 2014, 10:05 PM CDT for Knox County, Illinois. It was in force for 6 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
Jun 30, 2014, 10:05 PM CDT (03:05 UTC)
Expired
Jul 1, 2014, 4:00 AM CDT
In force
6 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

County Knox County, IL

The radar

The Quad Cities radar (KDVN), 77 km from the middle of the area, began a volume at 03:06 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

Davenport, (KDVN), launched 00:00Z, 3.1 hours before the alert went out and 76 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 00:00Z on 2014-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 157 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2014-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 268 square meters per square second.19395878Sfc1 km3 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
157 J/kg
Mixed-layer CIN
-178 J/kg
Mixed-layer LCL
1059 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
268 m²/s²
0-3 km storm-relative helicity
552 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.3

Open this sounding in Storm Lab

The text

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

581 
WGUS53 KILX 010305
FFWILX
ILC095-010900-
/O.NEW.KILX.FF.W.0020.140701T0305Z-140701T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1005 PM CDT MON JUN 30 2014

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KNOX COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 400 AM CDT

* AT 1002 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
  DOPPLER RAINFALL ESTIMATES RANGE FROM 1 TO 2 INCHES OVER THE PAST
  HOUR FROM NEAR GALESBURG THROUGH ALTONA. AN ADDITIONAL 1 TO 2 INCHES
  OF RAIN WILL BE POSSIBLE OVER THE NEXT HOUR FROM GALESBURG TO 
  WILLIAMSFIELD. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GALESBURG...ALTONA...GILSON...KNOXVILLE...ONEIDA...RIO...
  VICTORIA...WATAGA AND WILLIAMSFIELD.

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 4085 8998 4084 9044 4101 9045 4115 9044
      4115 8999

$$

SMITH
2 follow-up statements
474 
WGUS73 KILX 010625
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
125 AM CDT TUE JUL 1 2014

ILC095-010900-
/O.CON.KILX.FF.W.0020.000000T0000Z-140701T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX IL-
125 AM CDT TUE JUL 1 2014

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR KNOX COUNTY UNTIL 400 AM
CDT...

AT 122 AM CDT...ALTHOUGH THE HEAVY RAINFALL THREAT HAS ENDED EARLY
THIS MORNING...THE FLASH FLOOD THREAT HAS NOT. DOPPLER RAINFALL
ESTIMATES ACROSS THE WARNED AREA RANGED FROM 1.50 TO 2.50 INCHES
WITH THE HEAVIER TOTALS ACROSS EXTREME NORTHERN KNOX COUNTY. 

SOME LOCATIONS THAT WILL CONTINUE WITH THE THREAT FOR FLASH FLOODING
INCLUDE...GALESBURG...ALTONA...GILSON...KNOXVILLE...ONEIDA...RIO...
VICTORIA...WATAGA AND WILLIAMSFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4085 8998 4084 9044 4101 9045 4115 9044
      4115 8999

$$

SMITH
750 
WGUS73 KILX 010850
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
350 AM CDT TUE JUL 1 2014

ILC095-010905-
/O.EXP.KILX.FF.W.0020.000000T0000Z-140701T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX IL-
350 AM CDT TUE JUL 1 2014

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR KNOX COUNTY 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 4085 8998 4084 9044 4101 9045 4115 9044
      4115 8999

$$

SMITH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 8:54 PM CDTSpecial Weather StatementILXKnox, Marshall, Peoria, Stark66 min
Jun 30, 9:38 PM CDTSpecial Weather StatementILXMcLean, Woodford67 min
Jun 30, 9:50 PM CDTSevere Thunderstorm WarningILXFulton, Mason, Peoria, Tazewell40 min
Jun 30, 10:23 PM CDTSevere Thunderstorm WarningILXCass, Fulton, Mason, Menard, Schuyler, Tazewell37 min
Jun 30, 10:38 PM CDTAreal Flood AdvisoryILXPeoria, Tazewell, Woodford6 hr
Jun 30, 10:42 PM CDTAreal Flood AdvisoryILXFulton, Knox6 hr
Jul 1, 12:01 AM CDTAreal Flood WarningILXMarshall, Stark9 hr
Jul 1, 4:31 AM CDTRiver Flood WarningILXPeoria, Tazewell, Woodford8 days
Jul 1, 4:37 AM CDTRiver Flood WarningILXFulton, Knox3 days
Jul 1, 4:37 AM CDTRiver Flood WarningILXFulton3 days
Jul 1, 4:59 AM CDTRiver Flood WarningILXPiatt5 days

Nearby

Flash Flood Warnings in Illinois, 2014Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.