Alert archive / Illinois / Flash Flood Warnings in 2016

Flash Flood Warning 10, NWS Lincoln, IL

July 18, 2016Jasper County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 18, 2016, 12:21 PM CDT for Jasper County, Illinois. It was in force for 4 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: Jul 18, 2016, 12:21 PM CDT (17:21 UTC)
Expired: Jul 18, 2016, 4:45 PM CDT
In force: 4 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

County Jasper County, IL

The radar

The Evansville,IN radar (KVWX), 85 km from the middle of the area, began a volume at 17:23 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

Time	Report	Where	Remark
Jul 18, 2:00 PM CDT	HEAVY RAIN 2.49	Ste. Marie, IL	STORM TOTAL FROM EARLIER TODAY

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, 5.4 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2983 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

As transmitted.

507 
WGUS53 KILX 181721
FFWILX
ILC079-182145-
/O.NEW.KILX.FF.W.0010.160718T1721Z-160718T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1221 PM CDT MON JUL 18 2016

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN JASPER COUNTY IN SOUTHEASTERN ILLINOIS...

* UNTIL 445 PM CDT

* AT 1218 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS WITH
  HEAVY RAIN APPROACHING THE WARNED AREA. NEARLY 2 TO 3 INCHES
  OF RAIN HAS ALREADY FALLEN FROM THE LATE MORNING THUNDERSTORM
  ...PRIMARILY BETWEEN NEWTON AND WEST LIBERTY. FLASH FLOODING 
  IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  NEWTON...STE. MARIE...WILLOW HILL...WEST LIBERTY...BOGOTA...
  AND LATONA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 3902 8795 3885 8797 3885 8836 3904 8836

$$

MILLER

1 follow-up statement

294 
WGUS73 KILX 182112
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
412 PM CDT MON JUL 18 2016

ILC079-182121-
/O.CAN.KILX.FF.W.0010.000000T0000Z-160718T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JASPER-
412 PM CDT MON JUL 18 2016

...THE FLASH FLOOD WARNING FOR SOUTHERN JASPER COUNTY IS CANCELLED...

THE THREAT FOR ADDITIONAL HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER 
EXPECTED TO POSE A THREAT. 

LAT...LON 3902 8795 3885 8797 3885 8836 3904 8836

$$

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:32 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason, Peoria, Tazewell	43 min
Jul 18, 8:12 AM CDT	Severe Thunderstorm Warning	ILX	Logan, Mason, Tazewell	48 min
Jul 18, 8:42 AM CDT	Special Weather Statement	ILX	Sangamon	33 min
Jul 18, 9:04 AM CDT	Special Weather Statement	ILX	DeWitt	56 min
Jul 18, 9:26 AM CDT	Special Weather Statement	ILX	Piatt	34 min
Jul 18, 10:02 AM CDT	Special Weather Statement	ILX	Champaign	43 min
Jul 18, 10:26 AM CDT	Severe Thunderstorm Warning	ILX	Champaign, Douglas, Edgar, Vermilion	49 min
Jul 18, 11:12 AM CDT	Severe Thunderstorm Warning	ILX	Edgar, Vermilion	18 min
Jul 18, 11:18 AM CDT	Special Weather Statement	ILX	Jasper	42 min
Jul 18, 3:41 PM CDT	Excessive Heat Watch	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	48 hr

Nearby

Flash Flood Warnings in Illinois, 2016 Every flash flood warning in 2016

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.