Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 51, NWS Lincoln, IL

June 25, 20114 counties in Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 25, 2011, 9:21 PM CDT for 4 counties in 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 25, 2011, 9:21 PM CDT (02:21 UTC)
Expired
Jun 26, 2011, 3:30 AM CDT
In force
6 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Christian County, IL, Menard County, IL, Morgan County, IL, Sangamon County, IL

The radar

The Lincoln radar (KILX), 54 km from the middle of the area, began a volume at 02:22 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, 2.4 hours before the alert went out and 103 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.

257 
WGUS53 KILX 260221
FFWILX
ILC021-129-137-167-260830-
/O.NEW.KILX.FF.W.0051.110626T0221Z-110626T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SANGAMON COUNTY IN CENTRAL ILLINOIS...
  SOUTHEASTERN MORGAN COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHWESTERN MENARD COUNTY IN CENTRAL ILLINOIS...
  WESTERN CHRISTIAN COUNTY IN CENTRAL ILLINOIS...

* UNTIL 330 AM CDT SUNDAY

* AT 921 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES WILL BE
  LIKELY IN THE WARNED AREA OVER THE NEXT HOUR OR TWO. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SPRINGFIELD...TAYLORVILLE...ATHENS...AUBURN...CHATHAM...DIVERNON...
  EDINBURG...KINCAID...LOAMI...MECHANICSBURG...MORRISONVILLE...NEW
  BERLIN...PAWNEE...PETERSBURG...PLEASANT PLAINS...RIVERTON...
  ROCHESTER...SHERMAN...TALLULA AND WAVERLY.

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 4011 8999 4012 8998 3990 8945 3952 8922
      3935 8919 3936 8953 3953 8953 3952 8997
      3991 9000

$$

SMITH
2 follow-up statements
588 
WGUS73 KILX 260342
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1042 PM CDT SAT JUN 25 2011

ILC021-129-137-167-260830-
/O.CON.KILX.FF.W.0051.000000T0000Z-110626T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MENARD IL-MORGAN IL-SANGAMON IL-CHRISTIAN IL-
1042 PM CDT SAT JUN 25 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WESTERN CHRISTIAN...
SANGAMON...SOUTHEASTERN MORGAN AND SOUTHWESTERN MENARD COUNTIES UNTIL
330 AM CDT...

AT 1039 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL...ESPECIALLY SOUTH OF A LOAMI
TO EDINBURG LINE. DOPPLER RAINFALL ESTIMATES IN THIS AREA RANGE FROM
1 TO 2.50 INCHES SINCE 830 PM CDT. RADAR TRENDS SUGGEST A CONTINUED 
SOUTHWARD DRIFT TO THE INTENSE RAINFALL OVER THE NEXT HOUR. HOWEVER...
THE FLASH FLOOD THREAT WILL CONTINUE INTO THE EARLY MORNING HOURS. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
SPRINGFIELD...TAYLORVILLE...ATHENS...AUBURN...CHATHAM...DIVERNON...
EDINBURG...KINCAID...LOAMI...MECHANICSBURG...MORRISONVILLE...NEW
BERLIN...PAWNEE...PETERSBURG...PLEASANT PLAINS...RIVERTON...
ROCHESTER...SHERMAN...TALLULA AND WAVERLY.

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 4011 8999 4012 8998 3990 8945 3952 8922
      3935 8919 3936 8953 3953 8953 3952 8997
      3991 9000

$$

SMITH
924 
WGUS73 KILX 260828
FFSILX

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

ILC021-129-137-167-260841-
/O.EXP.KILX.FF.W.0051.000000T0000Z-110626T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MENARD IL-MORGAN IL-SANGAMON IL-CHRISTIAN IL-
328 AM CDT SUN JUN 26 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WESTERN
CHRISTIAN...SANGAMON...SOUTHEASTERN MORGAN AND SOUTHWESTERN MENARD
COUNTIES WILL BE ALLOWED TO EXPIRE AT 330 AM CDT...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER MOST OF THE WARNED 
AREA...MAINLY MORGAN AND MENARD COUNTIES. SANGAMON COUNTY IS STILL 
EXPERIENCING FLOODED ROADS...ESPECIALLY AROUND THE LOAMI AREA...SO 
AN AREAL FLOOD WARNING HAS BEEN ISSUED UNTIL 930 AM FOR SOUTHERN 
SANGAMON COUNTY. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO 
YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4011 8999 4012 8998 3990 8945 3952 8922
      3935 8919 3936 8953 3953 8953 3952 8997
      3991 9000

$$

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, 8:42 PM CDTFlash Flood WarningILXCass, Mason, Morgan, Schuyler, Scott6 hr
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, 9:23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.