Alert archive / Indiana / Flash Flood Warnings in 2021

Flash Flood Warning 16, NWS Wilmington, OH

June 30, 2021Dearborn County, Franklin County, Ripley County, Indiana; Hamilton County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jun 30, 2021, 8:26 PM EDT for Dearborn County, Franklin County, Ripley County, Indiana; Hamilton County, Ohio. It was in force for 3 hr. 3 reports 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: Jun 30, 2021, 8:26 PM EDT (00:26 UTC)
Expired: Jun 30, 2021, 11:30 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Dearborn County, IN, Franklin County, IN, Ripley County, IN, Hamilton County, OH

The radar

The Cincinnati radar (KILN), 95 km from the middle of the area, began a volume at 00:28 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
Jun 30, 9:45 PM EDT	FLASH FLOOD	2 Ene Lawrenceville, IN	ABUNDANT RUSHING WATER OVER A ROAD NEAR INTERSECTION OF TRACKVILLE RD. AND HICKORY RD. TIME OF EVENT ESTIMATED. TIME OF EVENT ESTIMATED.
Jun 30, 9:54 PM EDT	FLASH FLOOD	1 Ssw Saint Peter, IN	BLUE CREEK ROAD WASHED OUT NEAR COUNTY LINE ROAD
Jun 30, 10:11 PM EDT	FLASH FLOOD	2 Ene Lawrenceville, IN	PEOPLE WERE RESCUED FROM A SUBMERGED VEHICLE ON TRACKVILLE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.4 hours before the alert went out and 97 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: 1557 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 768 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

840 
WGUS51 KILN 010026
FFWILN
INC029-047-137-OHC061-010330-
/O.NEW.KILN.FF.W.0016.210701T0026Z-210701T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wilmington OH
826 PM EDT Wed Jun 30 2021

The National Weather Service in Wilmington has issued a

* Flash Flood Warning for...
  Northern Dearborn County in southeastern Indiana...
  Southern Franklin County in southeastern Indiana...
  Northeastern Ripley County in southeastern Indiana...
  Northern Hamilton County in southwestern Ohio...

* Until 1130 PM EDT.

* At 826 PM EDT, radar indicated thunderstorms producing heavy rain 
  across the warned area. Between 2 and 3 inches of rain have 
  fallen. Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that may experience flash flooding include...
  Cincinnati, Fairfield, Forest Park, Sharonville, Blue Ash, 
  Springdale, Reading, Montgomery, Harrison, North College Hill, 
  Wyoming, Batesville, Mount Healthy, Deer Park, Bright, Finneytown, 
  Ross, Taylor Creek, Blue Jay and Colerain Township.

This includes the following highways...
	I-75 in Ohio between mile markers 11 and 17.
	I-74 in Ohio between mile markers 0 and 10.
	I-71 in Ohio between mile markers 14 and 19.
	I-74 in Indiana between mile markers 149 and 171.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

To report flash flooding, go to our website at weather.gov/iln and 
submit your report via social media, when you can do so safely.

&&

LAT...LON 3927 8530 3931 8521 3931 8512 3935 8508
      3935 8482 3929 8482 3931 8462 3929 8432
      3921 8435 3920 8482 3921 8520

FLASH FLOOD...RADAR INDICATED

$$

Hatzos

2 follow-up statements

909 
WGUS71 KILN 010105
FFSILN

Flash Flood Statement
National Weather Service Wilmington OH
905 PM EDT Wed Jun 30 2021

INC029-047-137-OHC061-010330-
/O.CON.KILN.FF.W.0016.000000T0000Z-210701T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dearborn IN-Franklin IN-Ripley IN-Hamilton OH-
905 PM EDT Wed Jun 30 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT THIS 
EVENING FOR NORTHERN DEARBORN, SOUTHERN FRANKLIN IN AND NORTHEASTERN 
RIPLEY COUNTIES IN SOUTHEASTERN INDIANA AND NORTHERN HAMILTON COUNTY 
IN SOUTHWESTERN OHIO...

At 905 PM EDT, radar indicated thunderstorms producing heavy rain 
across the warned area. Between 2.5 and 3.5 inches of rain have 
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that may experience flash flooding include...
  St. Leon, Lawrenceville, Penntown, Mount Healthy Heights, Forest 
  Park, Greenhills, Springdale, Glendale, Northbrook, Fairfield, 
  Sharonville, Reading, Harrison, North College Hill, Wyoming, Deer 
  Park, Finneytown, Ross, Taylor Creek, Blue Jay and Colerain 
  Township.

This includes areas along Tanners Creek in Dearborn County.

This includes the following highways...
	I-75 in Ohio between mile markers 11 and 17.
	I-74 in Ohio between mile markers 0 and 10.
	I-71 in Ohio between mile markers 14 and 19.
	I-74 in Indiana between mile markers 150 and 171.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report flash flooding, go to our website at weather.gov/iln and 
submit your report via social media, when you can do so safely.

&&

LAT...LON 3927 8530 3931 8521 3931 8512 3935 8508
      3935 8482 3929 8482 3931 8462 3929 8432
      3921 8435 3920 8482 3921 8520

FLASH FLOOD...RADAR INDICATED

$$

Hatzos

596 
WGUS71 KILN 010327
FFSILN

Flash Flood Statement
National Weather Service Wilmington OH
1127 PM EDT Wed Jun 30 2021

INC029-047-137-OHC061-010337-
/O.EXP.KILN.FF.W.0016.000000T0000Z-210701T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dearborn IN-Franklin IN-Ripley IN-Hamilton OH-
1127 PM EDT Wed Jun 30 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 1130 PM EDT THIS EVENING FOR 
NORTHERN DEARBORN, SOUTHERN FRANKLIN IN AND NORTHEASTERN RIPLEY 
COUNTIES IN SOUTHEASTERN INDIANA AND NORTHERN HAMILTON COUNTY IN 
SOUTHWESTERN OHIO...

Heavy rain has ended for the area under the Flash Flood Warning. 
Additional flash flooding is no longer expected.

With some flooding expected to persist overnight, a Flood Advisory 
has been issued for northern Dearborn and northern Hamilton counties 
until 815 AM.

Please continue to heed remaining road closures.

LAT...LON 3927 8530 3931 8521 3931 8512 3935 8508
      3935 8482 3929 8482 3931 8462 3929 8432
      3921 8435 3920 8482 3921 8520

$$

Hatzos

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 8:35 PM EDT	Special Weather Statement	ILN	Ripley	25 min
Jun 30, 9:11 PM EDT	Special Weather Statement	ILN	Dearborn	34 min
Jun 30, 9:30 PM EDT	Areal Flood Advisory	ILN	Franklin	104 min
Jun 30, 11:23 PM EDT	Areal Flood Advisory	ILN	Dearborn	9 hr
Jul 1, 1:02 AM EDT	Flash Flood Watch	ILN	Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 1 more	19 hr
Jul 1, 3:19 AM EDT	Areal Flood Advisory	ILN	Ohio, Switzerland	3 hr
Jul 1, 5:16 AM EDT	Areal Flood Advisory	ILN	Wayne	3 hr
Jun 30, 8:31 PM EDT	Special Weather Statement	ILN	Scioto	29 min
Jun 30, 10:13 PM EDT	River Flood Warning	ILN	Hamilton	4 hr
Jun 30, 10:17 PM EDT	Areal Flood Advisory	ILN	Hamilton	10 hr
Jun 30, 10:39 PM EDT	Flash Flood Warning	ILN	Hamilton	3 hr
Jun 30, 10:42 PM EDT	Areal Flood Advisory	ILN	Clermont	2 hr
Jul 1, 3:08 AM EDT	Areal Flood Advisory	ILN	Delaware, Franklin, Licking	5 hr
Jul 1, 3:23 AM EDT	Special Weather Statement	ILN	Franklin	37 min
Jul 1, 3:27 AM EDT	Flash Flood Warning	ILN	Brown, Clermont	3 hr
Jul 1, 3:42 AM EDT	Flash Flood Warning	ILN	Delaware	2 hr
Jul 1, 3:56 AM EDT	Areal Flood Advisory	ILN	Adams, Brown	4 hr
Jul 1, 4:16 AM EDT	Areal Flood Advisory	ILN	Scioto	4 hr
Jul 1, 6:20 AM EDT	Areal Flood Advisory	ILN	Brown, Clermont	115 min

Nearby

Flash Flood Warnings in Indiana, 2021 Flash Flood Warnings in Ohio, 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.