Alert archive / Illinois / Flash Flood Warnings in 2021

Flash Flood Warning 40, NWS Paducah, KY

July 16, 2021Franklin County, Hamilton County, Wayne County, Illinois

NWS Paducah, KY issued this flash flood warning at Jul 16, 2021, 4:28 PM CDT for Franklin County, Hamilton County, Wayne County, Illinois. It was in force for 3 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 16, 2021, 4:28 PM CDT (21:28 UTC)
Expired
Jul 16, 2021, 7:00 PM CDT
In force
3 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Franklin County, IL, Hamilton County, IL, Wayne County, IL

The radar

The Evansville,IN radar (KVWX), 85 km from the middle of the area, began a volume at 21:30 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 16, 4:43 PM CDTFLASH FLOODMcleansboro, ILLAW ENFORCEMENT RECUSED A WOMAN WHOSE SUV HAD BEEN STRANDED IN HIGH WATER ON HIGHWAY 14 IN MCLEANSBORO. NO ONE WAS INJURED. REPORTED BY WSIL-TV.
Jul 16, 5:11 PM CDTFLOODMcleansboro, ILSTREET FLOODING OCCURRING IN MURPHYSBORO WITH ABOUT 3 INCHES OF WATER FLOWING ACROSS STREETS IN PLACES. RAINFALL OF 2.25 INCHES SINCE 8 AM TODAY.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.5 hours before the alert went out and 227 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, Lincoln, IL at 12:00Z on 2021-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 139 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, Lincoln, IL at 12:00Z on 2021-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.193958Sfc1 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
139 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

521 
WGUS53 KPAH 162128
FFWPAH
ILC055-065-191-170000-
/O.NEW.KPAH.FF.W.0040.210716T2128Z-210717T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
428 PM CDT Fri Jul 16 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Franklin County in south central Illinois...
  Hamilton County in south central Illinois...
  Wayne County in south central Illinois...

* Until 700 PM CDT.

* At 428 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. The expected rainfall rate is 1 
  to 2 inches in 1 hour. Additional rainfall amounts up to 1 inch 
  are possible in the warned area. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  West Frankfort, Benton, Fairfield, Mcleansboro, Christopher, Rend 
  Lake Area, Zeigler, Royalton, Wayne City, Cisne, West City, 
  Thompsonville, Dahlgren, Buckner, Jeffersonville, Orient, 
  Hanaford, Ewing, Freeman Spur and Sims.

This includes the following highways...
	Interstate 64 in Illinois between Mile Markers 91 and 116.
	Interstate 57 in Illinois between Mile Markers 63 and 75.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3786 8915 3793 8915 3813 8878 3813 8870
      3861 8870 3860 8815 3826 8815 3826 8837
      3791 8838 3791 8871 3787 8871

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

07
1 follow-up statement
671 
WGUS73 KPAH 162352
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
652 PM CDT Fri Jul 16 2021

ILC055-065-191-170002-
/O.EXP.KPAH.FF.W.0040.000000T0000Z-210717T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin IL-Hamilton IL-Wayne IL-
652 PM CDT Fri Jul 16 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR 
FRANKLIN, HAMILTON AND WAYNE COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3786 8915 3793 8915 3813 8878 3813 8870
      3861 8870 3860 8815 3826 8815 3826 8837
      3791 8838 3791 8871 3787 8871

$$

08

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 10:01 PM CDTSpecial Weather StatementPAHFranklin, Williamson44 min
Jul 15, 11:11 PM CDTAreal Flood AdvisoryPAHPerry17 min
Jul 15, 11:28 PM CDTFlash Flood WarningPAHPerry3 hr
Jul 16, 1:09 AM CDTFlash Flood WarningPAHFranklin, Jefferson6 hr
Jul 16, 2:19 AM CDTFlash Flood WarningPAHPerry6 hr
Jul 16, 6:23 AM CDTFlash Flood WarningPAHJefferson6 hr
Jul 16, 7:52 AM CDTAreal Flood AdvisoryPAHJefferson, Saline4 min
Jul 16, 8:11 AM CDTAreal Flood AdvisoryPAHJefferson110 min
Jul 16, 12:14 PM CDTSpecial Weather StatementPAHJefferson46 min
Jul 16, 12:43 PM CDTAreal Flood AdvisoryPAHFranklin, Hamilton, Jefferson, Wayne2 hr
Jul 16, 12:58 PM CDTSpecial Weather StatementPAHHamilton47 min
Jul 16, 1:21 PM CDTFlash Flood WarningPAHFranklin, Hamilton, Jefferson114 min
Jul 16, 1:50 PM CDTAreal Flood AdvisoryPAHEdwards, Wabash115 min
Jul 16, 2:04 PM CDTFlash Flood WarningPAHHamilton, Wayne, White116 min
Jul 16, 2:17 PM CDTFlash Flood WarningPAHEdwards, Wabash, White118 min
Jul 16, 2:28 PM CDTAreal Flood AdvisoryPAHJackson, Perry3 hr
Jul 16, 3:16 PM CDTAreal Flood AdvisoryPAHFranklin, Hamilton, Jefferson, Wayne3 hr
Jul 16, 3:25 PM CDTFlash Flood WarningPAHFranklin, Jackson, Jefferson, Perry3 hr
Jul 16, 4:04 PM CDTFlash Flood Warning Considerable damage threatPAHPerry2 hr
Jul 16, 4:46 PM CDTAreal Flood AdvisoryPAHJackson, Saline, Williamson119 min
Jul 16, 4:59 PM CDTFlash Flood WarningPAHEdwards, Wabash, White3 hr
Jul 16, 6:12 PM CDTAreal Flood WarningPAHPerry13 hr

Nearby

Flash Flood Warnings in Illinois, 2021Every flash flood warning in 2021

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.