Alert archive / Indiana / Flash Flood Warnings in 2021

Flash Flood Warning 42, NWS Paducah, KY

July 18, 2021Pike County, Indiana

NWS Paducah, KY issued this flash flood warning at Jul 18, 2021, 7:34 PM EDT for Pike County, Indiana. It was in force for 2 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 18, 2021, 7:34 PM EDT (23:34 UTC)
Expired: Jul 18, 2021, 10:00 PM EDT
In force: 2 hr
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Flood severity: None

County Pike County, IN

The radar

The Evansville,IN radar (KVWX), 58 km from the middle of the area, began a volume at 23:35 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 18, 8:00 PM EDT	FLASH FLOOD	8 Ne Winslow, IN	WATER WAS FLOWING OVER AND COVERING 356 AND 257 JUST NORTHWEST OF OTWELL. SEVERAL OTHER COUNTY ROADS JUST OUTSIDE OF OTWELL ARE FLOODED AS WELL.

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, 11.6 hours before the alert went out and 222 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 784 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

852 
WGUS53 KPAH 182334
FFWPAH
INC125-190200-
/O.NEW.KPAH.FF.W.0042.210718T2334Z-210719T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
634 PM CDT Sun Jul 18 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Northeastern Pike County in southwestern Indiana...

* Until 900 PM CDT.

* At 634 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 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...
  mainly rural areas of Northeastern Pike County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3837 8707 3843 8722 3854 8721 3855 8718
      3853 8717 3853 8716 3852 8716 3852 8715
      3852 8714 3853 8714 3853 8712 3854 8712
      3854 8711 3852 8709 3852 8708 3851 8709
      3851 8707

FLASH FLOOD...RADAR INDICATED

$$

08

1 follow-up statement

494 
WGUS73 KPAH 190009
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
709 PM CDT Sun Jul 18 2021

INC125-190200-
/O.CON.KPAH.FF.W.0042.000000T0000Z-210719T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Pike IN-
709 PM CDT Sun Jul 18 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING 
FOR NORTHEASTERN PIKE COUNTY...

At 709 PM CDT, local law enforcement reported thunderstorms produced 
flooding rain in the northeast part of the county. Several roads 
around the Otwell area are flooded, including the junction of 356 
and 257 northwest of Otwell. Between 2.5 and 3 inches of rain have 
fallen. Flash flooding is already occurring. Despite the fact the 
storms have weakened and the rain has let up, flooding will continue 
until at least dark in some areas.

HAZARD...Flash flooding caused by thunderstorms.

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...
  mainly rural areas of Northeastern Pike County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3837 8707 3843 8722 3854 8721 3855 8718
      3853 8717 3853 8716 3852 8716 3852 8715
      3852 8714 3853 8714 3853 8712 3854 8712
      3854 8711 3852 8709 3852 8708 3851 8709
      3851 8707

FLASH FLOOD...OBSERVED

$$

08

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 3:57 PM EDT	Areal Flood Advisory	PAH	Posey, Vanderburgh	2 hr
Jul 18, 5:53 PM EDT	Areal Flood Advisory	PAH	Gibson	112 min
Jul 18, 7:04 PM EDT	Areal Flood Advisory	PAH	Pike	3 hr

Nearby

Flash Flood Warnings in Indiana, 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.