Alert archive / Illinois / Flash Flood Warnings in 2016

Flash Flood Warning 45, NWS St. Louis, MO

August 26, 2016Adams County, Illinois; Marion County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 26, 2016, 10:06 PM CDT for Adams County, Illinois; Marion County, Missouri. It was in force for 8 hr. 3 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
Aug 26, 2016, 10:06 PM CDT (03:06 UTC)
Expired
Aug 27, 2016, 6:00 AM CDT
In force
8 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Adams County, IL, Marion County, MO

The radar

The St Louis radar (KLSX), 151 km from the middle of the area, began a volume at 03:08 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
Aug 26, 10:29 PM CDTHEAVY RAIN 2.261 Se Quincy, ILRAINFALL SINCE 924 PM. REPORTED BY METEOROLOGIST FOR WGEM TV.
Aug 26, 10:49 PM CDTFLASH FLOODQuincy, ILMULTIPLE WATER RESCUES ONGOING THROUGHOUT CITY OF QUINCY
Aug 27, 12:12 AM CDTHEAVY RAIN 4.083 E Quincy, IL24 HOUR RAINFALL TOTAL...MOST OF THE RAINFALL FELL AFTER 930 PM

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, 3.1 hours before the alert went out and 200 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 2016-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2016-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1247 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

313 
WGUS53 KLSX 270306
FFWLSX
ILC001-MOC127-271100-
/O.NEW.KLSX.FF.W.0045.160827T0306Z-160827T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1006 PM CDT FRI AUG 26 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
  EASTERN MARION COUNTY IN NORTHEASTERN MISSOURI...

* UNTIL 600 AM CDT SATURDAY

* AT 1005 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...
  QUINCY...HANNIBAL...MENDON...LA GRANGE...FALL CREEK...BURTON...
  URSA...LORAINE...LIMA...MARBLEHEAD AND FOWLER.

THIS INCLUDES INTERSTATE 172 BETWEEN EXITS 2 AND 19.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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

&&

LAT...LON 4020 9120 3978 9127 3976 9130 3976 9136
      3972 9136 3968 9147 3995 9149 3995 9144
      4003 9149 4014 9150 4020 9141

$$

TES
1 follow-up statement
976 
WGUS73 KLSX 271046
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
546 AM CDT SAT AUG 27 2016

ILC001-MOC127-271055-
/O.CAN.KLSX.FF.W.0045.000000T0000Z-160827T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS IL-MARION MO-
546 AM CDT SAT AUG 27 2016

...THE FLASH FLOOD WARNING FOR WESTERN ADAMS AND EASTERN MARION
COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOOD WATERS ARE RECEDING. PLEASE CONTINUE
TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4020 9120 3978 9127 3976 9130 3976 9136
      3972 9136 3968 9147 3995 9149 3995 9144
      4003 9149 4014 9150 4020 9141

$$

KANOFSKY

Nearby

Flash Flood Warnings in Illinois, 2016Flash Flood Warnings in Missouri, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.