Alert archive / Ohio / Flash Flood Watches in 2018
Flash Flood Watch 5, NWS Wilmington, OH
NWS Wilmington, OH issued this flash flood watch at Jun 21, 2018, 12:15 PM EDT for 20 counties in Ohio; 4 counties in Indiana. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jun 21, 2018, 12:15 PM EDT (16:15 UTC)
- Expired
- Jun 22, 2018, 12:00 AM EDT
- In force
- 12 hr
- Issued by
- NWS Wilmington, OH
- Flood severity
- None
All 24 counties
Fayette County, IN, Franklin County, IN, Union County, IN, Wayne County, IN, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Darke County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Highland County, OH, Hocking County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Shelby County, OH, Warren County, OH
The radar
The Cincinnati radar (KILN), 31 km from the middle of the area, began a volume at 16:16 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.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.3 hours before the alert went out and 30 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
- 749 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 474 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
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 Jun 21, 10:36 AM EDT, 1 hour 39 minutes earlier.
Area forecast discussion, Jun 21, 10:36 AM EDT, 1 hour 39 minutes before
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</html>Hazardous weather outlook, Jun 21, 3:43 AM EDT, 8 hours 32 minutes before
Hazardous Weather Outlook National Weather Service Wilmington OH 343 AM EDT Thu Jun 21 2018 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-221200- 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- 343 AM EDT Thu Jun 21 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...Today and Tonight. Widespread showers and embedded thunderstorms will overspread the region today. Showers and embedded thunderstorms will then move north overnight. Most locations will see rainfall amounts of 1 to 2 inches. However, where thunderstorms occur or persist, locally higher amounts will be possible. These higher amounts may result in localized flooding. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Showers and thunderstorms will become likely Friday afternoon and evening. A few thunderstorms may become strong or severe with damaging winds the primary threat. In addition, the threat of locally heavy rain will continue which may result in localized flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 3:49 PM EDT | Areal Flood Advisory | ILN | Pickaway | 3 hr |
| Jun 21, 7:16 PM EDT | Areal Flood Advisory | ILN | Franklin, Madison | 3 hr |
| Jun 21, 7:55 PM EDT | Areal Flood Advisory | ILN | Champaign, Delaware, Logan, Madison, Union | 6 hr |
| Jun 21, 1:02 PM EDT | Areal Flood Advisory | ILN | Lewis | 118 min |
| Jun 21, 2:53 PM EDT | Flash Flood Warning | ILN | Lewis | 3 hr |
Nearby
Flash Flood Watches in Ohio, 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.