Alert archive / Illinois / Flash Flood Warnings in 2021

Flash Flood Warning 56, NWS Paducah, KY

August 27, 2021Edwards County, Illinois

NWS Paducah, KY issued this flash flood warning at Aug 27, 2021, 6:48 PM CDT for Edwards County, Illinois. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 27, 2021, 6:48 PM CDT (23:48 UTC)
Expired
Aug 27, 2021, 7:49 PM CDT
In force
61 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

County Edwards County, IL

The radar

The Evansville,IN radar (KVWX), 28 km from the middle of the area, began a volume at 23:49 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

Lincoln, IL (KILX), launched 12:00Z, 11.8 hours before the alert went out and 204 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 2021-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 535 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 2021-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939Sfc1 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
535 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
1109 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

327 
WGUS53 KPAH 272348
FFWPAH
ILC047-280245-
/O.NEW.KPAH.FF.W.0056.210827T2348Z-210828T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
648 PM CDT Fri Aug 27 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Southern Edwards County in southeastern Illinois...

* Until 945 PM CDT.

* At 648 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 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...
  Albion and Browns.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3840 8815 3840 8798 3840 8797 3839 8797
      3839 8798 3837 8798 3835 8797 3835 8796
      3834 8795 3828 8815

FLASH FLOOD...RADAR INDICATED

$$

AL
1 follow-up statement
486 
WGUS73 KPAH 280049
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
749 PM CDT Fri Aug 27 2021

ILC047-280059-
/O.CAN.KPAH.FF.W.0056.000000T0000Z-210828T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Edwards IL-
749 PM CDT Fri Aug 27 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHERN EDWARDS COUNTY...

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

LAT...LON 3840 8815 3840 8798 3840 8797 3839 8797
      3839 8798 3837 8798 3835 8797 3835 8796
      3834 8795 3828 8815

$$

AL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 4:07 PM CDTSpecial Weather StatementPAHEdwards23 min
Aug 27, 4:17 PM CDTSpecial Weather StatementPAHEdwards28 min
Aug 27, 4:55 PM CDTAreal Flood AdvisoryPAHEdwards, Wabash3 hr
Aug 27, 5:58 PM CDTAreal Flood AdvisoryPAHWayne, White2 hr
Aug 27, 6:35 PM CDTSpecial Weather StatementPAHHamilton25 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.