Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 59, NWS St. Louis, MO

July 19, 2015Adams County, Brown County, Pike County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 19, 2015, 3:49 AM CDT for Adams County, Brown County, Pike County, Illinois. It was in force for 6 hr. 2 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
Jul 19, 2015, 3:49 AM CDT (08:49 UTC)
Expired
Jul 19, 2015, 9:45 AM CDT
In force
6 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 Lincoln radar (KILX), 136 km from the middle of the area, began a volume at 08:50 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
Jul 19, 6:00 AM CDTFLASH FLOOD1 E New Salem, IL*** 1 FATAL *** COUNTY ROAD 2 COLLAPSED DUE TO FLASH FLOODING JUST EAST OF NEW SALEM. AN ELECTRICAL COOPERATIVE REPAIRMAN DIED WHEN HIS VEHICLE PLUNGED INTO THE SINK HOLE...WHICH IS ABOUT 30 FEET WIDE AND 30 FEET DEEP. TIME ESTIMATED.
Jul 19, 8:00 AM CDTFLASH FLOOD2 Nw New Salem, ILCOUNTY ROAD 2 COLLAPSED DUE TO FLASH FLOODING JUST NORTHWEST OF NEW SALEM. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 8.8 hours before the alert went out and 191 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 00:00Z on 2015-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1061 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 00:00Z on 2015-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
1061 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1393 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.5

Open this sounding in Storm Lab

The text

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

633 
WGUS53 KLSX 190849
FFWLSX
ILC001-009-149-191445-
/O.NEW.KLSX.FF.W.0059.150719T0849Z-150719T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
  ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
  BROWN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 945 AM CDT
    
* AT 349 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM 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...
  QUINCY...MOUNT STERLING...BARRY...GRIGGSVILLE...CAMP POINT...
  PAYSON...CLAYTON...FALL CREEK...BEVERLY...BUCKHORN...ADAMS...LA
  GRANGE...KINGSTON...BURTON...URSA...LIBERTY...VERSAILLES...HULL...
  RICHFIELD AND PERRY.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 172 BETWEEN EXITS 2 AND 19.
 INTERSTATE 72 BETWEEN EXITS 4 AND 35.

THIS WARNING ALSO INCLUDES SILOAM SPRINGS STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

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

&&

LAT...LON 4010 9070 4008 9067 4005 9068 4003 9061
      3998 9060 3999 9052 3997 9051 3988 9058
      3983 9057 3971 9065 3965 9062 3968 9130
      3973 9137 3980 9137 3986 9145 3993 9142
      4003 9150 4007 9150 4006 9092 4011 9091

$$

CARNEY

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, 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.