Alert archive / Illinois / Flash Flood Warnings in 2017

Flash Flood Warning 21, NWS Paducah, KY

April 30, 20179 counties in Illinois; Cape Girardeau County, Missouri

NWS Paducah, KY issued this flash flood warning at Apr 30, 2017, 6:52 AM CDT for 9 counties in Illinois; Cape Girardeau County, Missouri. It was in force for 11 hr. 5 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
Apr 30, 2017, 6:52 AM CDT (11:52 UTC)
Expired
Apr 30, 2017, 5:45 PM CDT
In force
11 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Alexander County, IL, Franklin County, IL, Hamilton County, IL, Jackson County, IL, Johnson County, IL, Perry County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Cape Girardeau County, MO

The radar

The Paducah radar (KPAH), 72 km from the middle of the area, began a volume at 11:52 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
Apr 30, 11:06 AM CDTHEAVY RAIN 3.12 Ese Bush, IL24 HOUR TOTAL ENDING AT 700 AM
Apr 30, 11:06 AM CDTHEAVY RAIN 3.14Nne Jonesboro, IL24 HOUR TOTAL ENDING AT 700 AM
Apr 30, 11:06 AM CDTHEAVY RAIN 3.32Ese De Soto, IL24 HOUR TOTAL ENDING AT 700 AM
Apr 30, 11:06 AM CDTHEAVY RAIN 3.763 S Herrin, IL24 HOUR TOTAL ENDING AT 700 AM
Apr 30, 11:40 AM CDTHEAVY RAIN 73 Sw Carbondale, ILRAIN TOTAL SINCE FRIDAY. ALSO...3.1 INCHES SINCE NOON SATURDAY.

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

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 11.9 hours before the alert went out and 282 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, Nashville Metro, TN at 00:00Z on 2017-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1125 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2017-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
1125 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1783 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.1
Supercell composite
4.5

Open this sounding in Storm Lab

The text

As transmitted.

392 
WGUS53 KPAH 301152
FFWPAH
ILC003-055-065-077-087-145-165-181-199-MOC031-301745-
/O.NEW.KPAH.FF.W.0021.170430T1152Z-170430T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
652 AM CDT SUN APR 30 2017

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Southern Perry County in south central Illinois...
  Union County in southern Illinois...
  Northern Johnson County in southern Illinois...
  Williamson County in southern Illinois...
  Saline County in southern Illinois...
  Jackson County in southern Illinois...
  North central Alexander County in southern Illinois...
  Franklin County in south central Illinois...
  Hamilton County in south central Illinois...
  East central Cape Girardeau County in southeastern Missouri...

* Until 1245 PM CDT

* At 648 AM CDT, local law enforcement reported that flash flooding 
  continues over portions of the warned area. The West Frankfort, 
  Brougton and Du Quoin Areas continue to have the greatest impacts. 
  Showers and thunderstorms will continue to stream over the warned 
  area. Another 1 to 2 inches of rainfall will be possible and will 
  likely lead to additional flash flooding this morning. 

* Some locations that will experience flooding include...
  Carbondale, Marion, Herrin, Harrisburg, West Frankfort,
  Murphysboro, Benton, Du Quoin, Pinckneyville, Carterville, Anna,
  Eldorado, Johnston City, McLeansboro, Christopher, Jonesboro, Rend
  Lake Area, Sesser, Zeigler and Carrier Mills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3761 8839 3760 8871 3734 8904 3733 8923
      3715 8928 3713 8935 3723 8943 3734 8943
      3756 8951 3759 8948 3768 8950 3781 8967
      3796 8959 3803 8959 3813 8916 3812 8872
      3819 8837

$$

DRS
1 follow-up statement
420 
WGUS53 KPAH 301725
FFWPAH
ILC003-055-065-077-087-145-165-181-199-MOC031-302245-
/O.EXT.KPAH.FF.W.0021.000000T0000Z-170430T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
1225 PM CDT SUN APR 30 2017

The National Weather Service in Paducah has extended the

* Flash Flood Warning for...
  Southern Perry County in south central Illinois...
  Union County in southern Illinois...
  Northern Johnson County in southern Illinois...
  Williamson County in southern Illinois...
  Saline County in southern Illinois...
  Jackson County in southern Illinois...
  North central Alexander County in southern Illinois...
  Franklin County in south central Illinois...
  Hamilton County in south central Illinois...
  East central Cape Girardeau County in southeastern Missouri...

* Until 545 PM CDT

* At 1222 PM CDT, trained weather spotters reported upwards to 4 
  inches across portions of the warned area had already fallen. 
  Spotters also reported creeks and streams still at or above 
  bankfull in some locations, with numerous reports of flooded 
  roadways still ongoing. Given continuing rainfall, and a threat of 
  heavy rain still forecast, the flash flood warning has been 
  extended through the remainder of the afternoon into the early 
  evening hours.
  
* Some locations that will experience flooding include...
  Carbondale, Marion, Herrin, Harrisburg, West Frankfort,
  Murphysboro, Benton, Du Quoin, Pinckneyville, Carterville, Anna,
  Eldorado, Johnston City, McLeansboro, Christopher, Jonesboro, Rend
  Lake Area, Sesser, Zeigler and Carrier Mills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3761 8839 3760 8871 3734 8904 3733 8923
      3715 8928 3713 8935 3723 8943 3734 8943
      3756 8951 3759 8948 3768 8950 3781 8967
      3796 8959 3803 8959 3813 8916 3812 8872
      3819 8837

$$

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 29, 7:04 PM CDTFlash Flood WarningPAHFranklin, Jackson, Johnson, Perry, Union, Williamson12 hr
Apr 29, 8:02 PM CDTFlash Flood WarningPAHAlexander12 hr
Apr 29, 8:31 PM CDTFlash Flood WarningPAHGallatin, Hamilton, Hardin, Pope, Saline, White4 hr
Apr 29, 9:50 PM CDTFlash Flood WarningPAHAlexander, Johnson, Pulaski, Union3 hr
Apr 30, 12:59 AM CDTFlash Flood WarningPAHGallatin, Hamilton, Hardin, Pope, Saline, White6 hr
Apr 30, 3:21 AM CDTSevere Thunderstorm WarningPAHAlexander, Jackson, Pulaski, Union24 min
Apr 30, 3:34 AM CDTSevere Thunderstorm WarningPAHMassac, Pope, Pulaski22 min
Apr 30, 6:59 AM CDTFlash Flood WarningPAHJackson11 hr
Apr 30, 9:04 AM CDTAreal Flood AdvisoryPAHAlexander, Johnson, Massac, Pope, Pulaski4 hr
Apr 30, 9:16 AM CDTFlash Flood WarningPAHEdwards, Hamilton, Jefferson, Perry, Wabash, Wayne and 1 more8 hr
Apr 30, 10:41 AM CDTFlash Flood WarningPAHHardin, Johnson, Massac, Pope, Saline8 hr
Apr 30, 11:52 AM CDTFlash Flood WarningPAHGallatin, Hardin3 hr
Apr 30, 1:25 PM CDTSpecial Weather StatementPAHMassac, Pulaski35 min
Apr 30, 1:33 PM CDTRiver Flood WarningPAHMassac, Pope17 days
Apr 30, 3:03 PM CDTAreal Flood AdvisoryPAHGallatin3 hr
Apr 30, 5:31 PM CDTAreal Flood WarningPAHJackson12 hr
Apr 30, 5:40 PM CDTAreal Flood WarningPAHEdwards, Franklin, Hamilton, Jackson, Jefferson, Perry and 5 more12 hr
Apr 30, 5:47 PM CDTAreal Flood WarningPAHJohnson, Massac, Pope, Union12 hr
Apr 29, 7:10 PM CDTSevere Thunderstorm WarningPAHCarter, Ripley23 min
Apr 29, 7:32 PM CDTSevere Thunderstorm WarningPAHButler, Carter, Wayne28 min
Apr 29, 9:02 PM CDTSpecial Weather StatementPAHNew Madrid, Stoddard43 min
Apr 30, 2:28 AM CDTSpecial Weather StatementPAHBollinger, New Madrid, Scott, Stoddard47 min
Apr 30, 2:41 AM CDTSevere Thunderstorm WarningPAHMississippi, New Madrid34 min

Nearby

Flash Flood Warnings in Illinois, 2017Flash Flood Warnings in Missouri, 2017Every flash flood warning in 2017

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.