Alert archive / Illinois / Flash Flood Warnings in 2019

Flash Flood Warning 13, NWS St. Louis, MO

May 29, 2019Adams County, Illinois

NWS St. Louis, MO issued this flash flood warning at May 29, 2019, 7:59 PM CDT for Adams 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
May 29, 2019, 7:59 PM CDT (00:59 UTC)
Expired
May 30, 2019, 2:00 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

County Adams County, IL

The radar

The Lincoln radar (KILX), 155 km from the middle of the area, began a volume at 01:00 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 00:00Z, 1.0 hours before the alert went out and 177 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 2019-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 614 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 2019-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.1939587897117Sfc1 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
614 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
778 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted.

527 
WGUS53 KLSX 300059
FFWLSX
ILC001-300700-
/O.NEW.KLSX.FF.W.0013.190530T0059Z-190530T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
759 PM CDT Wed May 29 2019

The National Weather Service in St Louis has issued a

* Flash Flood Warning for...
  Northern Adams County in west central Illinois...

* Until 200 AM CDT Thursday.

* At 759 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Camp Point, Mendon, Golden, Ursa, Loraine, Woodville, Lima,
  Coatsburg, Columbus, La Prairie, Paloma, Fowler and Chatton.

This includes Interstate 172 near exit 19.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4019 9100 3999 9100 3999 9139 4020 9140

$$

Walsh
1 follow-up statement
926 
WGUS73 KLSX 300653
FFSLSX

Flash Flood Statement
National Weather Service St Louis MO
153 AM CDT Thu May 30 2019

ILC001-300703-
/O.EXP.KLSX.FF.W.0013.000000T0000Z-190530T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams IL-
153 AM CDT Thu May 30 2019

...THE FLASH FLOOD WARNING FOR NORTHERN ADAMS COUNTY WILL EXPIRE AT
200 AM CDT...

The heavy rain has ended. Local law enforcement reports that the 
flash flooding waters have receded. Please continue to heed any 
remaining road closures.

LAT...LON 4019 9100 3999 9100 3999 9139 4020 9140

$$

Carney

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 7:13 PM CDTSpecial Weather StatementLSXMontgomery47 min
May 30, 12:27 AM CDTAreal Flood WarningLSXPike3 hr

Nearby

Flash Flood Warnings in Illinois, 2019Every flash flood warning in 2019

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.