Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 2, NWS Lincoln, IL

April 9, 2015Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at Apr 9, 2015, 5:54 AM CDT for Vermilion County, Illinois. It was in force for 6 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 9, 2015, 5:54 AM CDT (10:54 UTC)
Expired: Apr 9, 2015, 12:00 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

County Vermilion County, IL

The radar

The Indianapolis radar (KIND), 126 km from the middle of the area, began a volume at 10:58 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
Apr 9, 6:00 AM CDT	HEAVY RAIN 1.49	Danville, IL	24 HOUR TOTAL
Apr 9, 10:00 AM CDT	HEAVY RAIN 1.61	Danville, IL	RAINFALL TOTAL IN THE LAST 5 HOURS. LIGHT TO MODERATE RAINFALL CONTINUES TO FALL.

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 00:00Z, 10.9 hours before the alert went out and 81 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: 1216 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 955 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

840 
WGUS53 KILX 091054
FFWILX
ILC183-091700-
/O.NEW.KILX.FF.W.0002.150409T1054Z-150409T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
554 AM CDT THU APR 9 2015

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL NOON CDT

* AT 553 AM CDT...EMERGENCY MANAGEMENT REPORTED STREET FLOODING
  IN DANVILLE DUE TO THE SLOW MOVING THUNDERSTORMS WITH VERY HEAVY   
  RAINFALL ACROSS THE WARNED AREA. DOPPLER RAINFALL ESTIMATES IN
  RANGE FROM AN INCH TO AN INCH AND A HALF IN A HOURS TIME. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DANVILLE...CATLIN...FAIRMOUNT...OAKWOOD...TILTON AND WESTVILLE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 4001 8754 3994 8793 4023 8783 4032 8753
      4031 8752

$$

SMITH

1 follow-up statement

633 
WGUS73 KILX 091546
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1046 AM CDT THU APR 9 2015

ILC183-091601-
/O.CAN.KILX.FF.W.0002.000000T0000Z-150409T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERMILION IL-
1046 AM CDT THU APR 9 2015

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

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4001 8754 3994 8793 4023 8783 4032 8753
      4031 8752

$$

BARNES

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 8:02 PM CDT	River Flood Warning	ILX	Clay, Richland	7 days
Apr 9, 4:06 AM CDT	Special Weather Statement	ILX	Logan, Macon, Menard, Sangamon	54 min
Apr 9, 4:38 AM CDT	Special Weather Statement	ILX	Champaign, Vermilion	52 min
Apr 9, 4:53 AM CDT	Severe Thunderstorm Warning	ILX	Vermilion	52 min
Apr 9, 6:13 AM CDT	Special Weather Statement	ILX	Clay, Effingham, Jasper	62 min
Apr 9, 6:19 AM CDT	Special Weather Statement	ILX	Clay, Effingham, Jasper	56 min
Apr 9, 7:57 AM CDT	Special Weather Statement	ILX	Clark	33 min
Apr 9, 1:03 PM CDT	Special Weather Statement	ILX	Marshall, Peoria, Stark	57 min
Apr 9, 1:29 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Peoria, Woodford	46 min
Apr 9, 1:37 PM CDT	Tornado Warning	ILX	Marshall, Peoria, Woodford	38 min
Apr 9, 5:15 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Peoria, Tazewell	45 min
Apr 9, 6:01 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	44 min
Apr 9, 6:42 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Sangamon	48 min
Apr 9, 6:56 PM CDT	Severe Thunderstorm Warning	ILX	Knox, Marshall, Peoria, Stark, Woodford	49 min

Nearby

Flash Flood Warnings in Illinois, 2015 Every flash flood warning in 2015

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.