Alert archive / Illinois / Flash Flood Warnings in 2020

Flash Flood Warning 43, NWS Paducah, KY

June 28, 2020Johnson County, Pope County, Union County, Illinois

NWS Paducah, KY issued this flash flood warning at Jun 28, 2020, 1:19 AM CDT for Johnson County, Pope County, Union County, Illinois. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 28, 2020, 1:19 AM CDT (06:19 UTC)
Expired: Jun 28, 2020, 4:15 AM CDT
In force: 3 hr
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Flood severity: None

Counties Johnson County, IL, Pope County, IL, Union County, IL

The radar

The Paducah radar (KPAH), 44 km from the middle of the area, began a volume at 06:21 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

Nashville Metro, TN (KBNA), launched 00:00Z, 6.3 hours before the alert went out and 252 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: 786 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1256 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Paducah, KY wrote its last area forecast discussion before this flash flood warning went out at Jun 28, 1:01 AM CDT, 18 minutes earlier.

Area forecast discussion, Jun 28, 1:01 AM CDT, 18 minutes before

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Hazardous weather outlook, Jun 28, 1:15 AM CDT, 4 minutes before

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In the hours before

Special weather statement, Jun 27, 9:32 PM CDT, 3 hours 47 minutes before

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Special weather statement, Jun 27, 10:14 PM CDT, 3 hours 5 minutes before

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Special weather statement, Jun 27, 11:04 PM CDT, 2 hours 15 minutes before

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Special weather statement, Jun 27, 11:35 PM CDT, 1 hour 44 minutes before

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Special weather statement, Jun 28, 12:12 AM CDT, 1 hour 7 minutes before

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Special weather statement, Jun 28, 1:02 AM CDT, 17 minutes before

Special Weather Statement
National Weather Service Paducah KY
102 AM CDT Sun Jun 28 2020

ILZ088-092-093-MOZ087-280645-
Alexander IL-Union IL-Pulaski IL-Cape Girardeau MO-
102 AM CDT Sun Jun 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN UNION...NORTHWESTERN
PULASKI...NORTH CENTRAL ALEXANDER AND NORTHERN CAPE GIRARDEAU
COUNTIES UNTIL 145 AM CDT...

At 101 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southwest of Altenburg, or 10 miles northwest of Trail Of Tears
State Park, moving southeast at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Anna, Jonesboro, Trail Of Tears State Park, Dongola, Tamms, Ware, Oak
Ridge, Pocahontas and Mill Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 3747 8978 3759 8967 3746 8910 3722 8925
TIME...MOT...LOC 0601Z 296DEG 25KT 3753 8964

York

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 8:40 PM CDT	Flash Flood Watch	PAH	Daviess, Henderson, Hopkins, McLean, Muhlenberg, Union and 1 more	16 hr
Jun 28, 2:50 AM CDT	Areal Flood Advisory	PAH	Crittenden, Livingston	3 hr
Jun 28, 2:57 AM CDT	Special Weather Statement	PAH	Caldwell, Crittenden	48 min
Jun 28, 3:31 AM CDT	Special Weather Statement	PAH	Caldwell, Christian, Hopkins, Muhlenberg	59 min
Jun 28, 4:26 AM CDT	Special Weather Statement	PAH	Todd	34 min
Jun 28, 5:09 AM CDT	Areal Flood Advisory	PAH	Henderson, Union	2 hr
Jun 28, 6:13 AM CDT	Areal Flood Advisory	PAH	Daviess, Henderson, McLean, Webster	73 min
Jun 28, 7:15 AM CDT	Flash Flood Warning	PAH	Daviess, Henderson, McLean, Union, Webster	6 hr
Jun 28, 9:22 AM CDT	Areal Flood Advisory	PAH	Christian, Hopkins, McLean, Muhlenberg, Webster	3 hr
Jun 28, 1:52 PM CDT	Flash Flood Watch	PAH	Caldwell, Crittenden, Daviess, Henderson, Hopkins, McLean and 3 more	4 hr
Jun 28, 2:44 PM CDT	Flash Flood Warning	PAH	Daviess, Henderson, Hopkins, McLean, Muhlenberg, Union and 1 more	6 hr
Jun 28, 3:04 PM CDT	Areal Flood Advisory	PAH	Christian, Todd	116 min
Jun 28, 3:14 PM CDT	Special Weather Statement	PAH	Todd	46 min
Jun 28, 3:56 PM CDT	Special Weather Statement	PAH	Todd	49 min
Jun 28, 4:38 PM CDT	Severe Thunderstorm Warning	PAH	Todd	22 min
Jun 28, 5:00 PM CDT	Special Weather Statement	PAH	Todd	30 min
Jun 27, 9:32 PM CDT	Special Weather Statement	PAH	Jackson	43 min
Jun 27, 10:14 PM CDT	Special Weather Statement	PAH	Jackson	46 min
Jun 27, 11:04 PM CDT	Special Weather Statement	PAH	Franklin, Union, Williamson	41 min
Jun 27, 11:35 PM CDT	Special Weather Statement	PAH	Saline, Williamson	40 min
Jun 28, 12:02 AM CDT	Areal Flood Advisory	PAH	Union	118 min
Jun 28, 12:12 AM CDT	Special Weather Statement	PAH	Johnson, Union	48 min
Jun 28, 12:50 AM CDT	Areal Flood Advisory	PAH	Johnson, Pope, Saline	3 hr
Jun 28, 1:02 AM CDT	Special Weather Statement	PAH	Union	43 min
Jun 28, 1:48 AM CDT	Special Weather Statement	PAH	Alexander, Massac, Pope, Pulaski	42 min

Nearby

Flash Flood Warnings in Illinois, 2020 Every flash flood warning in 2020

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.