Alert archive / Illinois / Flash Flood Warnings in 2018

Flash Flood Warning 16, NWS Lincoln, IL

June 21, 2018Marshall County, Tazewell County, Woodford County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 21, 2018, 4:10 PM CDT for Marshall County, Tazewell County, Woodford County, Illinois. It was in force for 11 hr. 7 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
Jun 21, 2018, 4:10 PM CDT (21:10 UTC)
Expired
Jun 22, 2018, 3:15 AM CDT
In force
11 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Marshall County, IL, Tazewell County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 90 km from the middle of the area, began a volume at 21:14 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 21, 4:10 PM CDTFLASH FLOOD5 Nne Metamora, ILREPORTS OF FLOODED ROADWAYS FROM NORTH OF METAMORA TO LOW POINT.
Jun 21, 4:10 PM CDTFLASH FLOODLow Point, ILREPORTS OF FLASH FLOODING THROUGHOUT WESTERN PORTIONS OF THE COUNTY.
Jun 21, 4:15 PM CDTFLASH FLOODMetamora, ILREPORTS OF STREETS FLOODED. TIME ESTIMATED BY RADAR.
Jun 21, 4:15 PM CDTFLASH FLOODWashburn, ILREPORTS OF STREETS FLOODED. TIME ESTIMATED BY RADAR.
Jun 21, 4:30 PM CDTFLASH FLOODSpring Bay, ILREPORTS OF STREETS FLOODED. TIME ESTIMATED BY RADAR.
Jun 21, 4:45 PM CDTFLASH FLOODVarna, ILREPORTS OF NUMEROUS STREETS AND ROADS FLOODED THROUGHOUT THE CENTRAL AND EAST CENTRAL PORTIONS OF THE COUNTY. TIME ESTIMATED BY RADAR.
Jun 21, 9:10 PM CDTFLASH FLOODW Cazenovia, IL1800 NORTH REMAINS CLOSED FROM CAZENOVIA TO WIEDMAN ROAD DUE TO FLOODING FROM EARLIER STORMS.

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, 9.2 hours before the alert went out and 112 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 2018-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 291 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 2018-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.19395878Sfc1 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
291 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
496 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

466 
WGUS53 KILX 212110
FFWILX
ILC123-179-203-220315-
/O.NEW.KILX.FF.W.0016.180621T2110Z-180622T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
410 PM CDT THU JUN 21 2018

The National Weather Service in Lincoln has issued a

* Flash Flood Warning for...
  Central Marshall County in central Illinois...
  Western Woodford County in central Illinois...
  Northeastern Tazewell County in central Illinois...

* Until 1015 PM CDT Thursday

* At 410 PM CDT, Doppler radar indicated heavy rain across the warned
  area. Flash flooding is already occurring.

* Some locations that will experience flooding include...
  Peoria, Eureka, Lacon, East Peoria, Washington, Metamora,
  Germantown Hills, Henry, Toluca, Washburn, Spring Bay, Sparland,
  Varna, Bay View Gardens, Peoria Heights, Cazenovia, Hopewell, La
  Rose, Marshall County Airport and Lake Wildwood.

This includes the following highways...
 Interstate 39 between mile markers 39 and 40.
 Interstate 74 near mile marker 94.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4112 8933 4110 8935 4110 8905 4066 8930
      4068 8959 4071 8955 4079 8957 4094 8945
      4097 8945 4098 8948 4115 8938 4115 8933

$$

Barnes
3 follow-up statements
823 
WGUS73 KILX 220218
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
918 PM CDT THU JUN 21 2018

ILC123-179-220222-
/O.CAN.KILX.FF.W.0016.000000T0000Z-180622T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marshall-Tazewell-
918 PM CDT THU JUN 21 2018

...THE FLASH FLOOD WARNING FOR CENTRAL MARSHALL AND NORTHEASTERN
TAZEWELL COUNTIES IS CANCELLED...

Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.

LAT...LON 4092 8915 4066 8930 4066 8933 4075 8933
      4075 8955 4079 8957 4092 8946 4093 8927

$$

ILC203-220315-
/O.CON.KILX.FF.W.0016.000000T0000Z-180622T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Woodford-
918 PM CDT THU JUN 21 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
WESTERN WOODFORD COUNTY...

At 912 PM CDT, local law enforcement reported road closures near 
Cazenovia due to heavy rainfall. Some minor flooding is still 
possible in locations throughout the warned area. 2 to 3 inches of 
rain have fallen. Flash flooding is already occurring.

Some locations that will experience flooding include...
Eureka, Metamora, Germantown Hills, Washburn, Spring Bay, Bay View
Gardens, Peoria Heights, Cazenovia and Low Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 4092 8915 4066 8930 4066 8933 4075 8933
      4075 8955 4079 8957 4092 8946 4093 8927

$$

SB
538 
WGUS53 KILX 220242
FFWILX
ILC203-220815-
/O.EXT.KILX.FF.W.0016.000000T0000Z-180622T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
942 PM CDT THU JUN 21 2018

The National Weather Service in Lincoln has extended the

* Flash Flood Warning for...
  Western Woodford County in central Illinois...

* Until 315 AM CDT

* At 912 PM CDT, local law enforcement reported road closures near 
  Cazenovia due to the heavy rainfall of 2 to 3 inches that occurred 
  across the area late Thursday afternoon. Flash flooding is already 
  occurring. Although additional widespread heavy rainfall is not 
  expected overnight, the flash flood threat will remain across 
  western Woodford county into the early morning hours. 

* Some locations that will experience flooding include...
  Eureka, Metamora, Germantown Hills, Washburn, Spring Bay, Bay View
  Gardens, Peoria Heights, Cazenovia and Low Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 4092 8915 4066 8930 4066 8933 4075 8933
      4075 8955 4079 8957 4092 8946 4093 8927

$$

Smith
473 
WGUS73 KILX 220813
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
313 AM CDT FRI JUN 22 2018

ILC203-220820-
/O.EXP.KILX.FF.W.0016.000000T0000Z-180622T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Woodford-
313 AM CDT FRI JUN 22 2018

...THE FLASH FLOOD WARNING FOR WESTERN WOODFORD COUNTY WILL EXPIRE AT
315 AM CDT...

The heavy rain has ended. Additional light to moderate rain can be 
expected at times this morning into early afternoon. However, this 
is not expected to produce additional flooding. 

Please continue to heed any remaining road closures.

LAT...LON 4092 8915 4066 8930 4066 8933 4075 8933
      4075 8955 4079 8957 4092 8946 4093 8927

$$

Miller

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 7:16 PM CDTFlash Flood WarningILXFulton, Schuyler6 hr
Jun 20, 7:26 PM CDTSpecial Weather StatementILXScott49 min
Jun 20, 7:36 PM CDTSevere Thunderstorm WarningILXMorgan, Scott24 min
Jun 20, 7:57 PM CDTSpecial Weather StatementILXCass, Morgan48 min
Jun 20, 8:10 PM CDTAreal Flood AdvisoryILXPeoria, Tazewell3 hr
Jun 20, 8:28 PM CDTAreal Flood AdvisoryILXVermilion3 hr
Jun 20, 8:41 PM CDTFlash Flood WarningILXFulton, Peoria, Tazewell, Woodford6 hr
Jun 21, 12:04 PM CDTSpecial Weather StatementILXLogan41 min
Jun 21, 12:14 PM CDTSpecial Weather StatementILXFulton, Knox, Marshall, Mason, Peoria, Stark and 2 more4 hr
Jun 21, 12:35 PM CDTTornado WarningILXKnox25 min
Jun 21, 1:00 PM CDTTornado Warning Tornado observedILXFulton, Knox, Peoria30 min
Jun 21, 2:50 PM CDTSpecial Weather StatementILXLogan40 min

Nearby

Flash Flood Warnings in Illinois, 2018Every flash flood warning in 2018

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.