Alert archive / Ohio / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 18
The Storm Prediction Center issued this severe thunderstorm watch at Feb 20, 2014, 9:19 PM EST for 7 counties in Indiana; 32 counties in Ohio. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 20, 2014, 9:19 PM EST (02:19 UTC)
- Expired
- Feb 21, 2014, 12:04 AM EST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 39 counties
Adams County, IN, Allen County, IN, Blackford County, IN, DeKalb County, IN, Jay County, IN, Steuben County, IN, Wells County, IN, Allen County, OH, Auglaize County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Crawford County, OH, Darke County, OH, Defiance County, OH, Fulton County, OH, Greene County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Logan County, OH, Lucas County, OH, Marion County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Ottawa County, OH, Paulding County, OH, Preble County, OH, Putnam County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Warren County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH
The radar
The Northern Indiana radar (KIWX), 116 km from the middle of the area, began a volume at 02:20 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 10:13 PM EST | Severe Thunderstorm Warning | ILN | Darke, Preble | 47 min |
| Feb 20, 10:46 PM EST | Tornado Warning | ILN | Miami, Montgomery, Preble | 29 min |
| Feb 20, 10:49 PM EST | Severe Thunderstorm Warning | ILN | Darke, Miami, Montgomery, Preble, Shelby | 41 min |
| Feb 20, 11:04 PM EST | Tornado Warning | ILN | Miami | 26 min |
| Feb 20, 11:14 PM EST | Severe Thunderstorm Warning | ILN | Champaign, Clark, Greene, Logan | 61 min |
| Feb 20, 11:18 PM EST | Tornado Warning | ILN | Champaign, Miami | 27 min |
| Feb 20, 11:33 PM EST | Severe Thunderstorm Warning | CLE | Hancock, Marion, Seneca, Wyandot | 42 min |
| Feb 20, 11:39 PM EST | Severe Thunderstorm Warning | ILN | Clermont, Hamilton | 51 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.3 hours before the alert went out and 169 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1388 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 487 m²/s²
- 0-3 km storm-relative helicity
- 629 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 9:19 PM EST | Mesoscale Discussion | SPC | Adams, Allen, Bartholomew, Blackford, Brown, Clark and 43 more | 86 min |
| Feb 20, 11:38 PM EST | Mesoscale Discussion | SPC | Adams, Ashland, Athens, Brown, Butler, Champaign and 49 more | 67 min |
| Feb 21, 12:02 AM EST | Severe Thunderstorm Watch | SPC | Adams, Ashland, Athens, Brown, Champaign, Clark and 51 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Ohio, 2014Severe Thunderstorm Watches in Indiana, 2014Every severe thunderstorm watch in 2014
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.