Alert archive / Illinois / Flash Flood Warnings in 2016

Flash Flood Warning 34, NWS Lincoln, IL

September 10, 2016Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at Sep 10, 2016, 7:22 AM CDT for Champaign County, Vermilion County, Illinois. It was in force for 4 hr. 13 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: Sep 10, 2016, 7:22 AM CDT (12:22 UTC)
Expired: Sep 10, 2016, 11:15 AM CDT
In force: 4 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 127 km from the middle of the area, began a volume at 12:22 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.

What was reported inside it

Time	Report	Where	Remark
Sep 10, 7:30 AM CDT	HEAVY RAIN 2.09	Urbana, IL	COCORAHS STATION URBANA 0.1 SSE /IL-CP-12/.
Sep 10, 7:30 AM CDT	HEAVY RAIN 2.12	1 Nnw Savoy, IL	COCORAHS STATION SAVOY /IL-CP-44/.
Sep 10, 7:30 AM CDT	HEAVY RAIN 3.67	3 W Bismarck, IL	24-HOUR TOTAL...SWOP REPORT
Sep 10, 7:30 AM CDT	HEAVY RAIN 3.67	3 W Bismarck, IL	24-HOUR TOTAL...SWOP REPORT.
Sep 10, 7:40 AM CDT	HEAVY RAIN 1.91	1 Nw Savoy, IL	COCORAHS STATION 1 NW SAVOY /IL-CP-62/.
Sep 10, 8:00 AM CDT	HEAVY RAIN 1.01	Ogden, IL	RAINFALL FROM 540 AM TO 8 AM TODAY.
Sep 10, 8:00 AM CDT	HEAVY RAIN 1.58	1 Wnw Danville, IL	COCORAHS STATION 1 WNW DANVILLE /IL-VR-16/.
Sep 10, 8:00 AM CDT	HEAVY RAIN 1.62	1 S Champaign, IL	COCORAHS STATION 1 S CHAMPAIGN /IL-CP-27/.
Sep 10, 8:00 AM CDT	HEAVY RAIN 1.81	2 Nw Homer, IL	COCORAHS STATION 2 NW HOMER /IL-CP-104/.
Sep 10, 8:00 AM CDT	HEAVY RAIN 2.32	1 Nne Savoy, IL	COCORAHS STATION 1 NNE SAVOY /IL-CP-64/.
Sep 10, 8:30 AM CDT	HEAVY RAIN 1.89	3 Wsw Savoy, IL	COCORAHS STATION CHAMPAIGN 4.8 SSW /IL-CP-98/.
Sep 10, 9:00 AM CDT	HEAVY RAIN 2.36	1 N Savoy, IL	COCORAHS STATION SAVOY /IL-CP-82/.
Sep 10, 10:00 AM CDT	HEAVY RAIN 2.85	3 Nnw Danville, IL	COCORAHS STATION 3 NNW DANVILLE /IL-VR-7/.

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, 0.4 hours before the alert went out and 64 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1082 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: -133 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

334 
WGUS53 KILX 101222
FFWILX
ILC019-183-101615-
/O.NEW.KILX.FF.W.0034.160910T1222Z-160910T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
722 AM CDT SAT SEP 10 2016

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL VERMILION COUNTY IN EAST CENTRAL ILLINOIS...
  SOUTHERN CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 1115 AM CDT

* AT 721 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN, AND THIS IS IN ADDITION TO THE HEAVY RAINFALL THAT
  OCCURRED IN THIS AREA LATE YESTERDAY AFTERNOON AND EVENING.  FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHAMPAIGN...DANVILLE...URBANA...SAVOY...ST. JOSEPH...TOLONO...
  OAKWOOD...PHILO...SIDNEY...OGDEN...FITHIAN...MUNCIE...BISMARCK...
  SADORUS...ROYAL...IVESDALE...VERMILION COUNTY AIRPORT...COLLISON...
  ALVIN AND KICKAPOO STATE PARK.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 57 BETWEEN MILE MARKERS 224 AND 233.
 INTERSTATE 74 BETWEEN MILE MARKERS 185 AND 210.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4017 8754 3990 8846 4005 8845 4034 8753
      4025 8753

$$

SMITH

1 follow-up statement

964 
WGUS73 KILX 101616
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1116 AM CDT SAT SEP 10 2016

ILC019-183-101623-
/O.EXP.KILX.FF.W.0034.000000T0000Z-160910T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERMILION-CHAMPAIGN-
1116 AM CDT SAT SEP 10 2016

...THE FLASH FLOOD WARNING FOR CENTRAL VERMILION AND SOUTHERN
CHAMPAIGN COUNTIES WILL EXPIRE AT 1115 AM CDT...

MODERATE TO HEAVY RAINS EXITED EAST OF VERMILION COUNTY AROUND 8 AM.
WATER LEVELS HAVE RECEDED BY LATE MORNING AND FLOODING IS NO LONGER
EXPECTED TO POSE A THREAT. HENCE THE FLASH FLOOD WARNING FOR CENTRAL
VERMILION AND SOUTHERN CHAMPAIGN COUNTIES IS ALLOWED TO EXPIRE AT
1115 AM. PLEASE CONTINUE TO HEED ANY REMAINING POSSIBLE ROAD
CLOSURES. ALSO BE ALERT TO POSSIBLE DEBRIS ON LOW LYING ROADS THAT
MAY HAVE WASHED UP ON ROADS EARLIER THIS MORNING. 

LAT...LON 4017 8754 3990 8846 4005 8845 4034 8753
      4025 8753

$$

07

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 7:15 PM CDT	Tornado Warning Tornado observed	ILX	Vermilion	30 min
Sep 9, 7:17 PM CDT	Tornado Warning	ILX	Clark	32 min
Sep 10, 4:17 AM CDT	Areal Flood Advisory	ILX	Clay, Effingham	3 hr
Sep 10, 5:35 AM CDT	Flash Flood Warning	ILX	Christian, Shelby	4 hr
Sep 10, 5:59 AM CDT	Areal Flood Advisory	ILX	Champaign, Douglas, Edgar, Moultrie, Piatt, Vermilion	3 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.