Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 62, NWS St. Louis, MO

July 19, 2015Greene County, Jersey County, Macoupin County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 19, 2015, 7:59 AM CDT for Greene County, Jersey County, Macoupin County, Illinois. It was in force for 6 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, 2015, 7:59 AM CDT (12:59 UTC)
Expired
Jul 19, 2015, 1:45 PM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Greene County, IL, Jersey County, IL, Macoupin County, IL

The radar

The St Louis radar (KLSX), 80 km from the middle of the area, began a volume at 13:01 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

Davenport, (KDVN), launched 12:00Z, 1.0 hours before the alert went out and 255 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, Davenport, at 12:00Z on 2015-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 431 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, Davenport, at 12:00Z on 2015-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
431 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

459 
WGUS53 KLSX 191259
FFWLSX
ILC061-083-117-191845-
/O.NEW.KLSX.FF.W.0062.150719T1259Z-150719T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
759 AM CDT SUN JUL 19 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GREENE COUNTY IN SOUTHWESTERN ILLINOIS...
  MACOUPIN COUNTY IN SOUTHWESTERN ILLINOIS...
  NORTHERN JERSEY COUNTY IN SOUTHWESTERN ILLINOIS...

* UNTIL 145 PM CDT

* AT 751 AM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING 
  ACROSS THE WARNED AREA. FLASH FLOODING IS ALREADY OCCURRING.  
  FLASH FLOODING IS OCCURRING IN GREEN COUNTY ALONG U.S. HIGHWAY 67 IN 
  WHITE HALL AND ROODHOUSE.  ADDITIONALLY...A LEVEE IN HILLVIEW HAS 
  BEEN BREACHED AND FLOODING IS BEING REPORTED IN HILLVIEW.  RADAR 
  ESTIMATES THAT RAINFALL IN EXCESS OF 6 INCHES HAS OCCURRED IN A 
  BAND FROM NEAR ROODHOUSE SOUTHEAST TO HETTICK WITH LESSER AMOUNTS 
  TO EITHER SIDE OF THE BAND.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CARLINVILLE...GILLESPIE...WHITE HALL...CARROLLTON...MOUNT OLIVE...
  ROODHOUSE...BENLD...GREENFIELD...PALMYRA...SHIPMAN...WILSONVILLE...
  ATHENSVILLE...SAWYERVILLE...MOUNT CLARE...EAST GILLESPIE...
  EAGARVILLE...OLD KANE...KEMPER...PATTERSON AND KANE.

THIS INCLUDES INTERSTATE 55 IN ILLINOIS NEAR EXIT 44.
 
THIS WARNING ALSO INCLUDES BEAVER DAM STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.  NEVER DRIVE INTO WATER OF UNKNOWN DEPTH.  
THE ROAD BED MAY HAVE BEEN DAMAGED BY FLOOD WATERS AND MAY BE MUCH 
DEEPER THAN YOU EXPECT.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3952 9007 3941 8970 3901 8970 3914 9015
      3918 9052 3926 9060 3937 9062 3945 9061
      3952 9058

$$

CARNEY
1 follow-up statement
490 
WGUS73 KLSX 191742
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1242 PM CDT SUN JUL 19 2015

ILC061-083-117-191845-
/O.CON.KLSX.FF.W.0062.000000T0000Z-150719T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GREENE IL-MACOUPIN IL-JERSEY IL-
1242 PM CDT SUN JUL 19 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR
GREENE...MACOUPIN AND NORTHERN JERSEY COUNTIES...

AT 1233 PM CDT...DOPPLER RADAR INDICATED SHOWERS AND ISOLATED 
THUNDERSTORMS MOVING BACK INTO THE AREA FOR THE EARLY AFTERNOON 
HOURS.  WHILE THIS RAINFALL WILL NOT LIKELY ENHANCE ANY FLOODING, IT 
MAY KEEP WATER LEVELS HIGH INTO THE EARLY AFTERNOON.  

ADDITIONAL RAINFALLS OF LESS THAN ONE-HALF INCH ARE ANTICIPATED 
EARLY THIS AFTERNOON...BUT THIS WILL BE IN ADDITION TO THE 4 PLUS 
INCHES OF RAIN THAT FELL ACROSS PARTS OF THE AREA EARLY THIS 
MORNING.  

RAINFALL ESTIMATES FROM RADAR INDICATE THAT THE HEAVIEST 
RAINFALL 6 TO 7 INCHES...AND POSSIBLY A BIT MORE...FELL BETWEEN 
ROODHOUSE AND HETTICK.  

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CARLINVILLE...GILLESPIE...WHITE HALL...CARROLLTON...MOUNT OLIVE...
ROODHOUSE...BENLD...GREENFIELD...PALMYRA...SHIPMAN...WILSONVILLE...
ATHENSVILLE...SAWYERVILLE...MOUNT CLARE...EAST GILLESPIE...
EAGARVILLE...OLD KANE...KEMPER...PATTERSON AND KANE.

THIS INCLUDES INTERSTATE 55 IN ILLINOIS NEAR EXIT 44.
 
THIS WARNING ALSO INCLUDES BEAVER DAM STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

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

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3952 9007 3941 8970 3901 8970 3914 9015
      3918 9052 3926 9060 3937 9062 3945 9061
      3952 9058

$$

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 1:57 AM CDTFlash Flood WarningLSXGreene, Jersey, Macoupin6 hr
Jul 19, 2:39 AM CDTFlash Flood WarningLSXGreene, Macoupin6 hr
Jul 19, 3:12 AM CDTSevere Thunderstorm WarningLSXAdams48 min
Jul 19, 3:49 AM CDTFlash Flood WarningLSXAdams, Brown, Pike6 hr
Jul 19, 4:35 AM CDTFlash Flood WatchLSXAdams, Brown, Calhoun, Greene, Jersey, Macoupin and 1 more11 hr
Jul 19, 4:53 AM CDTFlash Flood WarningLSXMontgomery6 hr
Jul 19, 9:47 AM CDTFlash Flood WarningLSXBrown, Pike6 hr
Jul 19, 10:59 AM CDTAreal Flood AdvisoryLSXMontgomery5 hr
Jul 19, 11:23 AM CDTAreal Flood AdvisoryLSXPike5 hr
Jul 19, 12:03 PM CDTRiver Flood WarningLSXPike25 hr
Jul 19, 1:41 PM CDTFlash Flood WarningLSXGreene, Jersey5 hr
Jul 19, 4:03 PM CDTFlash Flood WatchLSXAdams, Bond, Brown, Calhoun, Greene, Jersey and 6 more20 hr
Jul 19, 6:23 PM CDTAreal Flood WarningLSXGreene24 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.