Alert archive / Illinois / Flash Flood Warnings in 2016

Flash Flood Warning 46, NWS St. Louis, MO

August 28, 2016Adams County, Brown County, Pike County, Illinois

NWS St. Louis, MO issued this flash flood warning at Aug 28, 2016, 10:05 AM CDT for Adams County, Brown County, Pike County, Illinois. It was in force for 4 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
Aug 28, 2016, 10:05 AM CDT (15:05 UTC)
Expired
Aug 28, 2016, 2:00 PM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Adams County, IL, Brown County, IL, Pike County, IL

The radar

The St Louis radar (KLSX), 126 km from the middle of the area, began a volume at 15:05 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, 3.1 hours before the alert went out and 199 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 2016-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1158 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 2016-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 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
1158 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
1022 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

406 
WGUS53 KLSX 281505
FFWLSX
ILC001-009-149-281900-
/O.NEW.KLSX.FF.W.0046.160828T1505Z-160828T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1005 AM CDT SUN AUG 28 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL PIKE COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHEASTERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHWESTERN BROWN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 200 PM CDT

* AT 1003 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. RADAR ESTIMATES UP TO 3 INCHES
  OF RAIN HAS ALREADY FALLEN ACROSS PARTS OF EXTREME NORTHWEST PIKE
  COUNTY ILLINOIS AND EXTREME SOUTHWEST PORTIONS OF BROWN COUNTY.
  FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BEVERLY...KINGSTON...BAYLIS AND FISHHOOK. 

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE THIS
MORNING IN THE WARNED AREA.

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 3988 9079 3975 9080 3970 9107 3985 9103
      3988 9092

$$

GLASS
2 follow-up statements
087 
WGUS73 KLSX 281651
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1151 AM CDT SUN AUG 28 2016

ILC001-009-149-281900-
/O.CON.KLSX.FF.W.0046.000000T0000Z-160828T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE IL-ADAMS IL-BROWN IL-
1151 AM CDT SUN AUG 28 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
NORTH CENTRAL PIKE...SOUTHEASTERN ADAMS AND SOUTHWESTERN BROWN
COUNTIES IN WEST CENTRAL ILLINOIS...

AT 1148 AM CDT...DOPPLER RADAR INDICATED THAT THE INTENSITY AND
COVERAGE OF SHOWERS AND THUNDERSTORMS HAS DIMINISHED ACROSS THE
WARNED AREA. RADAR ESTIMATES THUS FAR SHOW RAINFALL AMOUNTS OF JUST
OVER 3 INCHES TO THE NORTHWEST OF FISHHOOK. FLASH FLOODING REMAINS
POSSIBLE WITHIN THE WARNED AREA.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BEVERLY...KINGSTON...BAYLIS AND FISHHOOK. 

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 3988 9079 3975 9080 3970 9107 3985 9103
      3988 9092

$$

GLASS
787 
WGUS73 KLSX 281805
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
105 PM CDT SUN AUG 28 2016

ILC001-009-149-281815-
/O.CAN.KLSX.FF.W.0046.000000T0000Z-160828T1900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE IL-ADAMS IL-BROWN IL-
105 PM CDT SUN AUG 28 2016

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL PIKE...SOUTHEASTERN
ADAMS AND SOUTHWESTERN BROWN COUNTIES IN WEST CENTRAL ILLINOIS IS
CANCELLED...

THE HEAVY RAIN HAS ENDED AND FLOOD WATERS HAVE RECEDED. FLOODING IS
NO LONGER EXPECTED TO POSE A THREAT. 

LAT...LON 3988 9079 3975 9080 3970 9107 3985 9103
      3988 9092

$$

GLASS

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.