Alert archive / Illinois / Flash Flood Warnings in 2013

Flash Flood Warning 9, NWS Lincoln, IL

April 18, 2013Sangamon County, Illinois

NWS Lincoln, IL issued this flash flood warning at Apr 18, 2013, 1:01 PM CDT for Sangamon County, Illinois. It was in force for 21 hr. 2 reports 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
Apr 18, 2013, 1:01 PM CDT (18:01 UTC)
Expired
Apr 19, 2013, 9:33 AM CDT
In force
21 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
Unknown

County Sangamon County, IL

The radar

The Lincoln radar (KILX), 48 km from the middle of the area, began a volume at 18:02 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
Apr 19, 7:00 AM CDTHEAVY RAIN 1.2Springfield, IL
Apr 19, 8:00 AM CDTHEAVY RAIN 1.38Springfield, ILREPORT FROM LAKE SPRINGFIELD

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 12:00Z, 6.0 hours before the alert went out and 96 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 12:00Z on 2013-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2013-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -203 square meters per square second.1939587897Sfc1 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
474 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
-203 m²/s²
0-3 km storm-relative helicity
-478 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.

302 
WGUS53 KILX 181801
FFWILX
ILC167-190600-
/O.NEW.KILX.FF.W.0009.130418T1801Z-130419T0600Z/
/00000.U.DR.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
101 PM CDT THU APR 18 2013

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR AREAS DOWNSTREAM OF LAKE SPRINGFIELD IN...
  CENTRAL SANGAMON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 100 AM CDT FRIDAY.

* AT 1258 PM CDT...DUE TO RECENT HEAVY RAINFALL OVER SANGAMON
  COUNTY...WATER IS BEING RELEASED FROM SPAULDING DAM AT LAKE
  SPRINGFIELD. THIS WILL RESULT IN RAPID RISES ON SUGAR
  CREEK...DOWNSTREAM OF THE DAM. RAPID FLOODING OF LOW LYING
  AREAS ALONG THE CREEK WILL RESULT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ALL PERSONS IN FLOOD PRONE AREAS OF LOWER SUGAR CREEK AND SANGAMON 
RIVER BASINS SHOULD BE ADVISED THAT HIGH RIVER LEVELS ARE LIKELY AND 
EMERGENCY EVACUATION OF ALL AFFECTED AREAS IS STRONGLY RECOMMENDED. 
FOLLOW THE ADVICE OF PUBLIC SAFETY OFFICIALS.

&&

LAT...LON 3979 8962 3976 8958 3976 8962 3979 8965

$$

BAK
2 follow-up statements
675 
WGUS53 KILX 190541
FFWILX
ILC167-191800-
/O.EXT.KILX.FF.W.0009.000000T0000Z-130419T1800Z/
/00000.U.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1241 AM CDT FRI APR 19 2013

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR AREAS DOWNSTREAM OF LAKE SPRINGFIELD IN...
  CENTRAL SANGAMON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 100 PM CDT FRIDAY.

* AT 1240 AM CDT...DUE TO RECENT HEAVY RAINFALL OVER SANGAMON
  COUNTY...WATER IS BEING RELEASED FROM SPAULDING DAM AT LAKE
  SPRINGFIELD. THIS WILL RESULT IN RAPID RISES ON SUGAR
  CREEK...DOWNSTREAM OF THE DAM. RAPID FLOODING OF LOW LYING
  AREAS ALONG THE CREEK WILL RESULT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ALL PERSONS IN FLOOD PRONE AREAS OF LOWER SUGAR CREEK AND SANGAMON 
RIVER BASINS SHOULD BE ADVISED THAT HIGH RIVER LEVELS ARE LIKELY AND 
EMERGENCY EVACUATION OF ALL AFFECTED AREAS IS STRONGLY RECOMMENDED. 
FOLLOW THE ADVICE OF PUBLIC SAFETY OFFICIALS.

&&

LAT...LON 3979 8962 3976 8958 3976 8962 3979 8965

$$

SMITH
451 
WGUS73 KILX 191433
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
933 AM CDT FRI APR 19 2013

ILC167-191445-
/O.CAN.KILX.FF.W.0009.000000T0000Z-130419T1800Z/
/00000.U.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SANGAMON IL-
933 AM CDT FRI APR 19 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CENTRAL SANGAMON
COUNTY IS CANCELLED...

LAKE SPRINGFIELD HAS SIGNIFICANTLY REDUCED THE AMOUNT OF WATER THAT 
IS BEING RELEASED INTO SUGAR CREEK...SO THE FLASH FLOOD WARNING IS 
BEING REPLACED BY A FLASH FLOOD WATCH. 

LAT...LON 3979 8962 3976 8958 3976 8962 3979 8965

$$

HJS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 7:17 PM CDTFlash Flood WarningILXPeoria, Tazewell, Woodford15 hr
Apr 17, 7:23 PM CDTSevere Thunderstorm WarningILXSchuyler37 min
Apr 17, 7:59 PM CDTTornado WarningILXCass, Fulton, Mason, Schuyler31 min
Apr 17, 8:31 PM CDTFlash Flood WarningILXFulton, Knox, Marshall, Peoria, Schuyler, Stark and 1 more14 hr
Apr 17, 8:41 PM CDTSpecial Weather StatementILXFulton49 min
Apr 17, 9:30 PM CDTRiver Flood WarningILXMcLean, Tazewell, Woodford3 days
Apr 17, 9:47 PM CDTRiver Flood WarningILXCass, Mason11 days
Apr 17, 10:30 PM CDTSpecial Weather StatementILXMarshall, Peoria, Tazewell, Woodford60 min
Apr 18, 3:50 AM CDTWind AdvisoryILXChampaign, Christian, Clark, Clay, Coles, Crawford and 14 more7 hr
Apr 18, 4:57 AM CDTSpecial Weather StatementILXFulton, Mason, Menard, Peoria, Tazewell63 min
Apr 18, 5:45 AM CDTSpecial Weather StatementILXMarshall, Woodford30 min
Apr 18, 8:05 AM CDTSevere Thunderstorm WarningILXChampaign, Vermilion40 min
Apr 18, 8:57 AM CDTSevere Thunderstorm WarningILXEdgar, Vermilion63 min
Apr 18, 9:25 AM CDTRiver Flood WarningILXSangamon6 days
Apr 18, 9:25 AM CDTRiver Flood WarningILXMenard9 days
Apr 18, 9:25 AM CDTRiver Flood WarningILXCass, Mason, Menard9 days
Apr 18, 9:28 AM CDTSpecial Weather StatementILXClark, Crawford, Cumberland, Jasper62 min
Apr 18, 9:42 AM CDTSpecial Weather StatementILXClay63 min
Apr 18, 10:01 AM CDTAreal Flood WarningILXFulton, Knox, Marshall, Peoria, Schuyler, Stark and 2 more36 hr
Apr 18, 10:27 AM CDTSpecial Weather StatementILXClark, Clay, Crawford, Jasper, Lawrence, Richland63 min
Apr 18, 11:23 AM CDTAreal Flood AdvisoryILXChampaign, Coles, Cumberland, Douglas, Effingham, Moultrie and 1 more6 hr
Apr 18, 1:18 PM CDTSpecial Weather StatementILXClay, Cumberland, Effingham, Jasper42 min
Apr 18, 1:29 PM CDTSevere Thunderstorm WarningILXClay, Cumberland, Effingham, Jasper31 min
Apr 18, 1:57 PM CDTSpecial Weather StatementILXClark, Edgar63 min
Apr 18, 2:18 PM CDTFlash Flood WarningILXChampaign, Coles, Cumberland, Douglas, Effingham, Moultrie and 2 more18 hr
Apr 18, 3:25 PM CDTSpecial Weather StatementILXKnox, Mason, Peoria, Stark, Tazewell65 min
Apr 18, 4:04 PM CDTSpecial Weather StatementILXChristian, DeWitt, Logan, Macon, Sangamon56 min
Apr 18, 4:05 PM CDTAreal Flood AdvisoryILXVermilion16 hr
Apr 18, 4:33 PM CDTSpecial Weather StatementILXMarshall, Woodford57 min
Apr 18, 4:40 PM CDTAreal Flood AdvisoryILXClark, Clay, Crawford, Edgar, Jasper18 hr
Apr 18, 5:22 PM CDTSpecial Weather StatementILXChampaign, DeWitt, McLean, Vermilion53 min
Apr 18, 5:27 PM CDTSpecial Weather StatementILXClark, Coles, Cumberland, Douglas, Edgar, Moultrie and 2 more63 min
Apr 18, 6:08 PM CDTFlash Flood WarningILXFulton22 hr

Nearby

Flash Flood Warnings in Illinois, 2013Every flash flood warning in 2013

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.