Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 64, NWS St. Louis, MO

July 19, 2015Brown County, Pike County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 19, 2015, 9:47 AM CDT for Brown County, Pike 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, 9:47 AM CDT (14:47 UTC)
Expired
Jul 19, 2015, 3:45 PM CDT
In force
6 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), 120 km from the middle of the area, began a volume at 14:51 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, 2.8 hours before the alert went out and 202 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.

675 
WGUS53 KLSX 191447
FFWLSX
ILC009-149-192045-
/O.NEW.KLSX.FF.W.0064.150719T1447Z-150719T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

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 345 PM CDT

* AT 945 AM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING 
  ACROSS THE WARNED AREA. UP TO 6 INCHES OF RAIN HAVE FALLEN. FLASH 
  FLOODING IS ALREADY OCCURRING. THE PIKE COUNTY SHERIFFS DEPARTMENT 
  REPORTED THAT COUNTY ROAD 2 NEAR NEW SALEM HAD WASHED OUT.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GRIGGSVILLE...LA GRANGE...VERSAILLES...PERRY...BAYLIS...
  CHAMBERSBURG...NEW SALEM...VALLEY CITY AND FISHHOOK.

THIS INCLUDES INTERSTATE 72 BETWEEN EXITS 31 AND 35.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. MOST 
FLASH FLOODING DEATHS OCCUR IN VEHICLES.  TURN AROUND DONT DROWN.  
FIND ANOTHER ROUTE TO YOUR DESTINATION IF YOU ENCOUNTER FLOODED 
ROADS.

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

&&

LAT...LON 3997 9053 3990 9055 3989 9058 3988 9058
      3982 9057 3979 9060 3976 9061 3971 9065
      3969 9065 3965 9062 3967 9093 3976 9094
      3976 9091 3989 9091

$$

CARNEY
1 follow-up statement
140 
WGUS73 KLSX 192046
FFSLSX

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

ILC009-149-192055-
/O.EXP.KLSX.FF.W.0064.000000T0000Z-150719T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE IL-BROWN IL-
346 PM CDT SUN JUL 19 2015

...THE FLASH FLOOD WARNING FOR NORTHEASTERN PIKE AND SOUTHERN BROWN
COUNTIES IN WEST CENTRAL ILLINOIS HAS EXPIRED...

FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A 
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD 
CLOSURES.

LAT...LON 3997 9053 3990 9055 3989 9058 3988 9058
      3982 9057 3979 9060 3976 9061 3971 9065
      3969 9065 3965 9062 3967 9093 3976 9094
      3976 9091 3989 9091

$$

BYRD

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, 7:59 AM CDTFlash Flood WarningLSXGreene, Jersey, Macoupin6 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.