Alert archive / Ohio / Flash Flood Warnings in 2018

Flash Flood Warning 39, NWS Wilmington, OH

September 7, 2018Adams County, Ohio

NWS Wilmington, OH issued this flash flood warning at Sep 7, 2018, 8:33 PM EDT for Adams County, Ohio. It was in force for 106 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: Sep 7, 2018, 8:33 PM EDT (00:33 UTC)
Expired: Sep 7, 2018, 10:19 PM EDT
In force: 106 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

County Adams County, OH

The radar

The Cincinnati radar (KILN), 64 km from the middle of the area, began a volume at 00:33 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.6 hours before the alert went out and 64 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: 216 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 769 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

078 
WGUS51 KILN 080033
FFWILN
OHC001-080330-
/O.NEW.KILN.FF.W.0039.180908T0033Z-180908T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wilmington OH
833 PM EDT FRI SEP 7 2018

The National Weather Service in Wilmington has issued a

* Flash Flood Warning for...
  Northern Adams County in southwestern Ohio...

* Until 1130 PM EDT.

* At 832 PM EDT, radar indicated that thunderstorms had produced 
  heavy rainfall over two inches in the past hour across parts of 
  the warned area. Heavy rain continues to fall with another inch of 
  rain possible. Runoff from this excessive rainfall will cause 
  flash flooding to occur.

* Some locations that will experience flooding include...
  Peebles, Seaman, Dunkinsville, May Hill, Cedar Mills, Serpent Mound
  and Locust Grove.

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 3883 8353 3901 8365 3905 8343 3899 8330
      3881 8331

$$

Franks

1 follow-up statement

279 
WGUS71 KILN 080219
FFSILN

Flash Flood Statement
National Weather Service Wilmington OH
1019 PM EDT FRI SEP 7 2018

OHC001-080221-
/O.CAN.KILN.FF.W.0039.000000T0000Z-180908T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams OH-
1019 PM EDT FRI SEP 7 2018

...THE FLASH FLOOD WARNING FOR NORTHERN ADAMS COUNTY IS CANCELLED...

The heavy rain has ended and flooding is no longer expected to pose a
threat. 

Please report previous flash flooding to the National Weather Service
by going to our website at weather.gov/iln and submitting your report
via social media.

LAT...LON 3883 8353 3901 8365 3905 8343 3899 8330
      3881 8331

$$

Franks

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 8:13 PM EDT	Special Weather Statement	ILN	Adams	32 min
Sep 7, 9:02 PM EDT	Areal Flood Advisory	ILN	Scioto	3 hr
Sep 7, 10:49 PM EDT	Areal Flood Advisory	ILN	Pike	116 min
Sep 8, 3:50 AM EDT	Areal Flood Advisory	ILN	Champaign, Clark, Madison, Miami, Montgomery, Union	7 hr
Sep 8, 4:44 AM EDT	Areal Flood Advisory	ILN	Darke, Miami, Montgomery, Preble	8 hr
Sep 8, 8:12 AM EDT	Areal Flood Advisory	ILN	Brown	4 hr
Sep 8, 1:13 PM EDT	Areal Flood Advisory	ILN	Clermont, Hamilton	3 hr
Sep 8, 3:20 PM EDT	Areal Flood Advisory	ILN	Adams, Scioto	3 hr
Sep 8, 3:36 PM EDT	Areal Flood Advisory	ILN	Darke, Montgomery, Preble	6 hr
Sep 8, 5:34 PM EDT	Areal Flood Warning	ILN	Butler, Hamilton	13 hr

Nearby

Flash Flood Warnings in Ohio, 2018 Every flash flood warning in 2018

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.