Alert archive / Illinois / Flash Flood Warnings in 2021

Flash Flood Warning 31, NWS Paducah, KY

July 15, 2021Perry County, Illinois

NWS Paducah, KY issued this flash flood warning at Jul 15, 2021, 11:28 PM CDT for Perry County, Illinois. It was in force for 3 hr. 1 report 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 15, 2021, 11:28 PM CDT (04:28 UTC)
Expired: Jul 16, 2021, 2:15 AM CDT
In force: 3 hr
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Flood severity: None

County Perry County, IL

The radar

The Paducah radar (KPAH), 118 km from the middle of the area, began a volume at 04:28 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

Time	Report	Where	Remark
Jul 16, 1:55 AM CDT	FLASH FLOOD	2 N Du Quoin, IL	HIGHWAY 51 NORTH OF HIGHWAY 154 NORTH OF DU QUOIN WAS COMPLETELY UNDER 2-3 FEET OF WATER. CUTLER WAS CUT OFF BY HIGH WATER.

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 00:00Z, 4.5 hours before the alert went out and 237 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 8 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 1218 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

873 
WGUS53 KPAH 160428
FFWPAH
ILC145-160715-
/O.NEW.KPAH.FF.W.0031.210716T0428Z-210716T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
1128 PM CDT Thu Jul 15 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Perry County in south central Illinois...

* Until 215 AM CDT.

* At 1128 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. 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...
  Du Quoin, Pinckneyville, Tamaroa, Willisville, Cutler and St. 
  Johns.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3821 8915 3813 8915 3812 8913 3811 8914
      3808 8912 3803 8915 3802 8914 3801 8915
      3800 8914 3796 8917 3795 8919 3796 8960
      3822 8959

FLASH FLOOD...RADAR INDICATED

$$

08

1 follow-up statement

780 
WGUS73 KPAH 160617
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
117 AM CDT Fri Jul 16 2021

ILC145-160715-
/O.CON.KPAH.FF.W.0031.000000T0000Z-210716T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Perry IL-
117 AM CDT Fri Jul 16 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM CDT EARLY THIS 
MORNING FOR PERRY COUNTY...

At 117 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 3 inches of rain have 
fallen 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...
  Du Quoin, Pinckneyville, Tamaroa, Willisville, Cutler and St. 
  Johns.

An additional inch or two of rain is possible in the next hour.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3821 8915 3813 8915 3812 8913 3811 8914
      3808 8912 3803 8915 3802 8914 3801 8915
      3800 8914 3796 8917 3795 8919 3796 8960
      3822 8959

FLASH FLOOD...RADAR INDICATED

$$

DAVEB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 10:01 PM CDT	Special Weather Statement	PAH	Franklin, Williamson	44 min
Jul 15, 11:11 PM CDT	Areal Flood Advisory	PAH	Perry	17 min
Jul 16, 1:09 AM CDT	Flash Flood Warning	PAH	Franklin, Jefferson	6 hr
Jul 16, 2:19 AM CDT	Flash Flood Warning	PAH	Perry	6 hr
Jul 16, 6:23 AM CDT	Flash Flood Warning	PAH	Jefferson	6 hr
Jul 16, 7:52 AM CDT	Areal Flood Advisory	PAH	Jefferson, Saline	4 min
Jul 16, 8:11 AM CDT	Areal Flood Advisory	PAH	Jefferson	110 min
Jul 16, 12:14 PM CDT	Special Weather Statement	PAH	Jefferson	46 min
Jul 16, 12:43 PM CDT	Areal Flood Advisory	PAH	Franklin, Hamilton, Jefferson, Wayne	2 hr
Jul 16, 12:58 PM CDT	Special Weather Statement	PAH	Hamilton	47 min
Jul 16, 1:21 PM CDT	Flash Flood Warning	PAH	Franklin, Hamilton, Jefferson	114 min
Jul 16, 1:50 PM CDT	Areal Flood Advisory	PAH	Edwards, Wabash	115 min
Jul 16, 2:04 PM CDT	Flash Flood Warning	PAH	Hamilton, Wayne, White	116 min
Jul 16, 2:17 PM CDT	Flash Flood Warning	PAH	Edwards, Wabash, White	118 min
Jul 16, 2:28 PM CDT	Areal Flood Advisory	PAH	Jackson, Perry	3 hr
Jul 16, 3:16 PM CDT	Areal Flood Advisory	PAH	Franklin, Hamilton, Jefferson, Wayne	3 hr
Jul 16, 3:25 PM CDT	Flash Flood Warning	PAH	Franklin, Jackson, Jefferson, Perry	3 hr
Jul 16, 4:04 PM CDT	Flash Flood Warning Considerable damage threat	PAH	Perry	2 hr
Jul 16, 4:28 PM CDT	Flash Flood Warning	PAH	Franklin, Hamilton, Wayne	3 hr
Jul 16, 4:46 PM CDT	Areal Flood Advisory	PAH	Jackson, Saline, Williamson	119 min
Jul 16, 4:59 PM CDT	Flash Flood Warning	PAH	Edwards, Wabash, White	3 hr
Jul 16, 6:12 PM CDT	Areal Flood Warning	PAH	Perry	13 hr

Nearby

Flash Flood Warnings in Illinois, 2021 Every 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.