Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 50, NWS Lincoln, IL

June 25, 20115 counties in Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 25, 2011, 8:42 PM CDT for 5 counties in Illinois. It was in force for 6 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
Jun 25, 2011, 8:42 PM CDT (01:42 UTC)
Expired
Jun 26, 2011, 2:30 AM CDT
In force
6 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Cass County, IL, Mason County, IL, Morgan County, IL, Schuyler County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 105 km from the middle of the area, began a volume at 01:45 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
Jun 25, 10:55 PM CDTHEAVY RAIN 3.06Winchester, ILRAINFALL SINCE 7 AM. 1.96 INCHES BEFORE 430 PM...1.10 INCHES SINCE THEN.

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, 1.7 hours before the alert went out and 167 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 00:00Z on 2011-06-26Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2011-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1094 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
189 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.

107 
WGUS53 KILX 260142
FFWILX
ILC017-125-137-169-171-260730-
/O.NEW.KILX.FF.W.0050.110626T0142Z-110626T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
842 PM CDT SAT JUN 25 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CASS COUNTY IN WEST CENTRAL ILLINOIS...
  MORGAN COUNTY IN WEST CENTRAL ILLINOIS...
  SCOTT COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHERN SCHUYLER COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHWESTERN MASON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 230 AM CDT

* AT 841 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL FROM RUSHVILLE
  TO JUST SOUTH OF VIRGINIA AND PRENTICE. DOPPLER RAINFALL ESTIMATES
  RANGE FROM 1 TO 2 INCHES IN THIS AREA SINCE 730 PM. ADDITIONAL STRONG
  THUNDERSTORMS WILL BE CAPABLE OF PRODUCING 1 TO 2 INCHES ADDITIONAL 
  RAINFALL OVER THE NEXT HOUR OR TWO AS THEY TRACK SOUTHEAST OVER THE
  WARNED AREA. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BEARDSTOWN...JACKSONVILLE...RUSHVILLE...VIRGINIA...WINCHESTER...
  ALEXANDER...ALSEY...ARENZVILLE...ASHLAND...BLUFF SPRINGS...
  BLUFFS...BROWNING...CHANDLERVILLE...CHAPIN...EXETER...FRANKLIN...
  LITERBERRY...MANCHESTER...MEREDOSIA...MURRAYVILLE...NAPLES...
  WAVERLY AND WOODSON.

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 4015 9078 4018 9002 3979 9000 3952 8993
      3952 9058 3972 9064 3982 9058 3988 9059
      3992 9054 3998 9052 3997 9059 4002 9062
      4005 9068 4007 9068 4008 9071 4010 9071
      4010 9077

$$

SMITH
2 follow-up statements
101 
WGUS73 KILX 260337
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1037 PM CDT SAT JUN 25 2011

ILC017-125-137-169-171-260730-
/O.CON.KILX.FF.W.0050.000000T0000Z-110626T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MASON IL-MORGAN IL-SCHUYLER IL-SCOTT IL-CASS IL-
1037 PM CDT SAT JUN 25 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CASS...SCOTT...SOUTHERN
SCHUYLER...MORGAN AND SOUTHWESTERN MASON COUNTIES UNTIL 230 AM CDT...

AT 1036 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE INTENSE RAINFALL HAS PUSHED SOUTH AND EAST OF THE AREA. ALTHOUGH
THE HEAVY RAINFALL THREAT HAS DIMINISHED...THE THREAT FROM FLASH FLOODING
CONTINUES ACROSS THE WARNED AREA. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR.
SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...BEARDSTOWN...
JACKSONVILLE...RUSHVILLE...VIRGINIA...WINCHESTER...ALEXANDER...
ALSEY...ARENZVILLE...ASHLAND...BLUFF SPRINGS...BLUFFS...BROWNING...
CHANDLERVILLE...CHAPIN...EXETER...FRANKLIN...LITERBERRY...
MANCHESTER...MEREDOSIA...MURRAYVILLE...NAPLES...WAVERLY AND WOODSON.

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 4015 9078 4018 9002 3979 9000 3952 8993
      3952 9058 3972 9064 3982 9058 3988 9059
      3992 9054 3998 9052 3997 9059 4002 9062
      4005 9068 4007 9068 4008 9071 4010 9071
      4010 9077

$$

SMITH
419 
WGUS73 KILX 260730
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
230 AM CDT SUN JUN 26 2011

ILC017-125-137-169-171-260744-
/O.EXP.KILX.FF.W.0050.000000T0000Z-110626T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MASON IL-MORGAN IL-SCHUYLER IL-SCOTT IL-CASS IL-
230 AM CDT SUN JUN 26 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CASS...SCOTT...
SOUTHERN SCHUYLER...MORGAN AND SOUTHWESTERN MASON COUNTIES WILL BE
ALLOWED TO EXPIRE AT 230 AM CDT...

THE FLASH FLOOD WARNING HAS BEEN REPLACED WITH AN AREAL FLOOD
WARNING...DUE TO ROADS STILL BEING AFFECTED BY WATER. IF FLOODING
HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT
AGENCY.

LAT...LON 4015 9078 4018 9002 3979 9000 3952 8993
      3952 9058 3972 9064 3982 9058 3988 9059
      3992 9054 3998 9052 3997 9059 4002 9062
      4005 9068 4007 9068 4008 9071 4010 9071
      4010 9077

$$

SHIMON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 7:02 PM CDTSpecial Weather StatementILXMorgan, Sangamon58 min
Jun 25, 7:16 PM CDTSevere Thunderstorm WarningILXCass, Morgan59 min
Jun 25, 7:35 PM CDTSpecial Weather StatementILXSangamon55 min
Jun 25, 7:41 PM CDTSevere Thunderstorm WarningILXChristian, Sangamon46 min
Jun 25, 8:34 PM CDTSevere Thunderstorm WarningILXCass, Morgan, Scott56 min
Jun 25, 8:59 PM CDTSevere Thunderstorm WarningILXChristian, Sangamon61 min
Jun 25, 9:04 PM CDTSpecial Weather StatementILXScott56 min
Jun 25, 9:06 PM CDTSevere Thunderstorm WarningILXMorgan, Scott54 min
Jun 25, 9:21 PM CDTFlash Flood WarningILXChristian, Menard, Morgan, Sangamon6 hr
Jun 25, 9:23 PM CDTSevere Thunderstorm WarningILXMorgan, Sangamon42 min
Jun 25, 9:57 PM CDTSevere Thunderstorm WarningILXClay, Effingham, Jasper63 min
Jun 25, 10:02 PM CDTSevere Thunderstorm WarningILXChristian, Shelby58 min
Jun 25, 11:07 PM CDTFlash Flood WarningILXClay, Cumberland, Effingham, Jasper, Shelby6 hr
Jun 25, 11:27 PM CDTFlash Flood WarningILXClark, Crawford, Cumberland, Jasper6 hr
Jun 25, 11:31 PM CDTSevere Thunderstorm WarningILXClay59 min
Jun 25, 11:54 PM CDTFlash Flood WarningILXClay, Lawrence, Richland12 hr
Jun 26, 12:11 AM CDTSpecial Weather StatementILXLawrence, Richland64 min
Jun 26, 1:10 AM CDTFlash Flood WatchILXSangamon6 hr
Jun 26, 2:26 AM CDTAreal Flood WarningILXCass, Morgan, Scott9 hr
Jun 26, 3:25 AM CDTAreal Flood WarningILXSangamon6 hr
Jun 26, 5:02 AM CDTAreal Flood WarningILXCumberland6 hr
Jun 26, 10:11 AM CDTRiver Flood WarningILXLawrence4 days
Jun 26, 11:33 AM CDTAreal Flood WarningILXMorgan6 hr
Jun 26, 2:35 PM CDTFlash Flood WatchILXCass, Morgan, Sangamon, Schuyler, Scott15 hr

Nearby

Flash Flood Warnings in Illinois, 2011Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.