Alert archive / Ohio / Flash Flood Watches in 2018
Flash Flood Watch 8, NWS Wilmington, OH
NWS Wilmington, OH issued this flash flood watch at Sep 7, 2018, 3:38 AM EDT for 32 counties in Ohio; 12 counties in Kentucky; 8 counties in Indiana. It took effect at Sep 8, 2018, 12:00 PM EDT. It was in force for 36 hr.
The area
The counties it named.
The facts
- Issued
- Sep 7, 2018, 3:38 AM EDT (07:38 UTC)
- In effect from
- Sep 8, 2018, 12:00 PM EDT
- Expired
- Sep 9, 2018, 11:56 PM EDT
- In force
- 36 hr
- Issued by
- NWS Wilmington, OH
- Flood severity
- None
All 52 counties
Dearborn County, IN, Fayette County, IN, Franklin County, IN, Ohio County, IN, Ripley County, IN, Switzerland County, IN, Union County, IN, Wayne County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Adams County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Hardin County, OH, Highland County, OH, Hocking County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Warren County, OH
The radar
The Cincinnati radar (KILN), 20 km from the middle of the area, began a volume at 07:41 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, 7.6 hours before the alert went out and 22 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.
- Mixed-layer CAPE
- 134 J/kg
- Mixed-layer CIN
- -141 J/kg
- Mixed-layer LCL
- 1353 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wilmington, OH wrote its last area forecast discussion before this flash flood watch went out at Sep 7, 2:04 AM EDT, 1 hour 34 minutes earlier.
Area forecast discussion, Sep 7, 2:04 AM EDT, 1 hour 34 minutes before
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</html>Hazardous weather outlook, Sep 6, 3:11 PM EDT, 12 hours 27 minutes before
Hazardous Weather Outlook National Weather Service Wilmington OH 311 PM EDT Thu Sep 6 2018 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-071915- Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio- Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant- Pendleton-Bracken-Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke- Shelby-Logan-Union OH-Delaware-Miami-Champaign-Clark-Madison- Franklin OH-Licking-Preble-Montgomery-Greene-Fayette OH-Pickaway- Fairfield-Butler-Warren-Clinton-Ross-Hocking-Hamilton-Clermont-Brown- Highland-Adams-Pike-Scioto- 311 PM EDT Thu Sep 6 2018 This Hazardous Weather Outlook is for East Central Indiana, Southeast Indiana, Northeast Kentucky, Northern Kentucky, Central Ohio, South Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...This Afternoon and Tonight. Scattered showers and storms will continue this afternoon and evening. Some storms may produce heavy rainfall, with localized flooding possible. A few of the stronger storms could produce strong wind gusts. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Showers and thunderstorms may produce heavy rainfall on Friday, with localized flooding possible. As moisture associated with Tropical Depression Gordon moves into the region, the potential for heavy rain will exist this weekend. At this time, the greatest threat for heavy rain and flooding appears to be on Saturday night and Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. HATZOS
The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 2:10 PM EDT | Special Weather Statement | ILN | Darke | 35 min |
| Sep 7, 2:30 PM EDT | Areal Flood Advisory | ILN | Darke, Preble | 4 hr |
| Sep 7, 3:38 PM EDT | Areal Flood Advisory | ILN | Montgomery | 3 hr |
| Sep 7, 4:36 PM EDT | Areal Flood Advisory | ILN | Montgomery | 114 min |
| Sep 7, 4:43 PM EDT | Areal Flood Advisory | ILN | Robertson | 2 hr |
| Sep 7, 4:46 PM EDT | Special Weather Statement | ILN | Robertson | 29 min |
Nearby
Flash Flood Watches in Ohio, 2018Flash Flood Watches in Kentucky, 2018Flash Flood Watches in Indiana, 2018Every flash flood watch 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.