Alert archive / Indiana / Flash Flood Warnings in 2021

Flash Flood Warning 52, NWS Paducah, KY

August 19, 2021Spencer County, Indiana

NWS Paducah, KY issued this flash flood warning at Aug 19, 2021, 4:14 AM CDT for Spencer County, Indiana. 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
Aug 19, 2021, 4:14 AM CDT (09:14 UTC)
Expired
Aug 19, 2021, 7:00 AM CDT
In force
3 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

County Spencer County, IN

The radar

The Evansville,IN radar (KVWX), 64 km from the middle of the area, began a volume at 09:16 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
Aug 19, 5:45 AM CDTFLASH FLOOD4 Nw Rockport, INNUMEROUS ROADS UNDER WATER IN SOUTHERN PART OF COUNTY, INCLUDING STATE ROUTE 545 NEAR NEW BOSTON, COUNTY ROAD 200 WEST NEAR ROCKPORT, STATE ROUTE 161 NEAR RICHLAND CITY, AND COUNTY ROAD 200 NORTH NEAR REO.

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, 9.2 hours before the alert went out and 206 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 2021-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 576 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, Nashville Metro, TN at 00:00Z on 2021-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
576 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
656 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

169 
WGUS53 KPAH 190914
FFWPAH
INC147-191200-
/O.NEW.KPAH.FF.W.0052.210819T0914Z-210819T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
414 AM CDT Thu Aug 19 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Southern Spencer County in southwestern Indiana...

* Until 700 AM CDT.

* At 414 AM CDT, Doppler radar indicated heavy rain and isolated 
  thunderstorms in southern Spencer County. Radar estimates that 
  between 2 and 4 inches of rain has fallen from Eureka to Richland 
  City, Sand Ridge, Reo, to Rockport overnight. 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 heavy rain.

  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...
  Rockport, Grandview and Eureka.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3800 8719 3800 8694 3798 8687 3794 8692
      3793 8698 3790 8704 3785 8705 3784 8720
      3788 8727 3793 8727 3795 8724 3795 8723
      3797 8722

FLASH FLOOD...RADAR INDICATED

$$

RJP
1 follow-up statement
179 
WGUS73 KPAH 191056
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
556 AM CDT Thu Aug 19 2021

INC147-191200-
/O.CON.KPAH.FF.W.0052.000000T0000Z-210819T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Spencer IN-
556 AM CDT Thu Aug 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 7 AM CDT THIS MORNING 
FOR SOUTHERN SPENCER COUNTY...

At 556 AM CDT, local law enforcement reported numerous roads under 
water in southern Spencer county, including State Route 545 near New 
Boston, County Road 200 West near Rockport, State Route 161 near 
Richland City, and County Road 200 North near Reo. Between 4 and 5 
inches of rain has fallen overnight. Flash flooding is ongoing.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Law enforcement reported.

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...
  Rockport, Grandview and Eureka.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3800 8718 3800 8694 3798 8687 3794 8692
      3793 8698 3791 8703 3789 8705 3785 8705
      3784 8720 3788 8727 3793 8727 3795 8724
      3795 8723 3797 8722

FLASH FLOOD...OBSERVED

$$

RJP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 3:52 AM CDTAreal Flood AdvisoryPAHSpencer, Vanderburgh, Warrick3 hr
Aug 19, 7:03 AM CDTAreal Flood WarningPAHSpencer3 hr

Nearby

Flash Flood Warnings in Indiana, 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.