Alert archive / Illinois / Flash Flood Warnings in 2016

Flash Flood Warning 12, NWS St. Louis, MO

July 19, 2016Brown County, Pike County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 19, 2016, 6:11 PM CDT for Brown County, Pike County, Illinois. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 19, 2016, 6:11 PM CDT (23:11 UTC)
Expired
Jul 19, 2016, 9:15 PM CDT
In force
3 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Brown County, IL, Pike County, IL

The radar

The Lincoln radar (KILX), 110 km from the middle of the area, began a volume at 23:13 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.2 hours before the alert went out and 172 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 2016-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1185 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 2016-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
1185 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
942 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.7

Open this sounding in Storm Lab

The text

As transmitted.

405 
WGUS53 KLSX 192311
FFWLSX
ILC009-149-200215-
/O.NEW.KLSX.FF.W.0012.160719T2311Z-160720T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
611 PM CDT TUE JUL 19 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHERN BROWN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 915 PM CDT

* AT 610 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BUCKHORN...LA GRANGE...VERSAILLES...CHAMBERSBURG AND COOPERTOWN. 

ADDITIONAL RAINFALL AMOUNTS OF 1-2 INCHES ARE POSSIBLE IN THE WARNED
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3998 9060 3998 9052 3999 9053 3998 9051
      3997 9051 3995 9053 3992 9054 3988 9058
      3986 9058 3983 9057 3978 9060 3981 9083
      3996 9084 3999 9061

$$

GOSSELIN
1 follow-up statement
418 
WGUS73 KLSX 200210
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
910 PM CDT TUE JUL 19 2016

ILC009-149-200220-
/O.EXP.KLSX.FF.W.0012.000000T0000Z-160720T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE IL-BROWN IL-
910 PM CDT TUE JUL 19 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN PIKE AND SOUTHERN BROWN
COUNTIES IN WEST CENTRAL ILLINOIS WILL EXPIRE AT 915 PM CDT...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3998 9060 3998 9052 3999 9053 3998 9051
      3997 9051 3995 9053 3992 9054 3988 9058
      3986 9058 3983 9057 3978 9060 3981 9083
      3996 9084 3999 9061

$$

GOSSELIN

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 19, 1:53 PM CDTSpecial Weather StatementLSXMadison52 min
Jul 19, 2:03 PM CDTSpecial Weather StatementLSXRandolph27 min
Jul 19, 5:20 PM CDTSpecial Weather StatementLSXAdams40 min
Jul 19, 5:27 PM CDTSevere Thunderstorm WarningLSXAdams48 min
Jul 19, 5:38 PM CDTSevere Thunderstorm WarningLSXBrown37 min
Jul 19, 6:01 PM CDTSevere Thunderstorm WarningLSXAdams, Brown, Pike44 min
Jul 19, 6:13 PM CDTSevere Thunderstorm WarningLSXPike47 min
Jul 19, 6:46 PM CDTSevere Thunderstorm WarningLSXCalhoun, Greene, Pike44 min

Nearby

Flash Flood Warnings in Illinois, 2016Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.