Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 70, NWS Lincoln, IL

September 5, 2015Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at Sep 5, 2015, 8:30 AM CDT for Vermilion County, Illinois. It was in force for 4 hr. 3 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 5, 2015, 8:30 AM CDT (13:30 UTC)
Expired
Sep 5, 2015, 12:30 PM CDT
In force
4 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

County Vermilion County, IL

The radar

The Indianapolis radar (KIND), 135 km from the middle of the area, began a volume at 13:32 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
Sep 5, 8:45 AM CDTFLASH FLOODHoopeston, ILRAINFALL THE PAST 3 HOURS HAS CAUSED WIDE SPREAD FLOODING ACROSS THE CITY OF HOOPESTON.
Sep 5, 8:45 AM CDTHEAVY RAIN 3.25Hoopeston, ILRAINFALL THE PAST 3 HOURS...24-HOUR TOTAL IS 4.25 INCHES OF RAIN
Sep 5, 11:00 AM CDTHEAVY RAIN 5.43Hoopeston, ILRAINFALL THE PAST 6 HOURS

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, 1.5 hours before the alert went out and 88 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 2015-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1082 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 2015-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.193958Sfc1 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
1082 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
1210 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

498 
WGUS53 KILX 051330
FFWILX
ILC183-051730-
/O.NEW.KILX.FF.W.0070.150905T1330Z-150905T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
830 AM CDT SAT SEP 5 2015

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 1230 PM CDT
    
* AT 826 AM CDT...DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. DOPPLER RADAR RAINFALL
  ESTIMATES RANGE FROM 2 TO 3 INCHES FROM NEAR HOOPESTON TO ABOUT
  4 MILES EAST OF ROSSVILLE. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  HOOPESTON...ROSSVILLE TO JUST NORTH OF ALVIN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4030 8762 4049 8773 4049 8753 4031 8753

$$

SMITH
2 follow-up statements
019 
WGUS73 KILX 051452
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
952 AM CDT SAT SEP 5 2015

ILC183-051730-
/O.CON.KILX.FF.W.0070.000000T0000Z-150905T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERMILION-
952 AM CDT SAT SEP 5 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT FOR
NORTHEASTERN VERMILION COUNTY...

AT 945 AM CDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING IN
HOOPESTON WITH RAINFALL TOTALS OF 3.25 INCHES SINCE THE RAIN STARTED
EARLIER THIS MORNING. TOTAL RAINFALL...INCLUDING LAST NIGHTS RAINS...
WERE UP TO 4.25 INCHES AROUND THE HOOPESTON AREA. A DOPPLER RAINFALL
ESTIMATE OF OVER 5 INCHES WAS LOCATED ABOUT A MILE EAST OF HOOPESTON.
FLASH FLOODING IS ALREADY OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HOOPESTON AND ALVIN. 

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES WILL BE POSSIBLE OVER THE
NEXT HOUR FROM HOOPESTON TO ALVIN AND EAST ACROSS THE REMAINDER OF
THE WARNED AREA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES. 

&&

LAT...LON 4030 8762 4049 8773 4049 8753 4031 8753

$$

SMITH
234 
WGUS73 KILX 051729
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1229 PM CDT SAT SEP 5 2015

ILC183-051735-
/O.EXP.KILX.FF.W.0070.000000T0000Z-150905T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VERMILION-
1229 PM CDT SAT SEP 5 2015

...THE FLASH FLOOD WARNING FOR NORTHEASTERN VERMILION COUNTY WILL
EXPIRE AT 1230 PM CDT...

THE VERMILION COUNTY EMERGENCY MANAGER AND HOOPESTON POLICE DEPARTMENT
REPORT THAT THE FLOOD WATERS CONTINUE TO RECEDE ACROSS THE AREA...AND NO
LONGER POSE A THREAT TO LIFE OR PROPERTY. THE HEAVY RAINFALL THREAT HAS
ENDED FOR THE TIME BEING EARLY THIS AFTERNOON. PLEASE CONTINUE TO HEED
ANY ROAD CLOSURES.

LAT...LON 4030 8762 4049 8773 4049 8753 4031 8753

$$

SMITH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 7:17 PM CDTSevere Thunderstorm WarningILXChampaign, McLean, Piatt28 min
Sep 4, 7:23 PM CDTSpecial Weather StatementILXVermilion37 min
Sep 4, 8:02 PM CDTSevere Thunderstorm WarningILXChampaign28 min
Sep 4, 8:16 PM CDTSevere Thunderstorm WarningILXDeWitt, Piatt29 min
Sep 4, 8:58 PM CDTSpecial Weather StatementILXChampaign, DeWitt, Douglas, Edgar, McLean, Piatt47 min
Sep 4, 9:49 PM CDTSevere Thunderstorm WarningILXColes, Douglas26 min
Sep 4, 9:51 PM CDTFlash Flood WarningILXDouglas3 hr
Sep 5, 7:45 AM CDTAreal Flood AdvisoryILXVermilion3 hr

Nearby

Flash Flood Warnings in Illinois, 2015Every 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.