Alert archive / Kentucky / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS Wilmington, OH

April 3, 2018Grant County, Owen County, Kentucky

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 3, 2018, 9:09 PM EDT for Grant County, Owen County, Kentucky. It was in force for 16 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: Apr 3, 2018, 9:09 PM EDT (01:09 UTC)
Expired: Apr 3, 2018, 9:25 PM EDT
In force: 16 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Grant County, KY, Owen County, KY

The radar

The Louisville radar (KLVX), 118 km from the middle of the area, began a volume at 01:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 3, 7:30 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.2 hours before the alert went out and 136 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: 67 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1229 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 401 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

854 
WUUS51 KILN 040109
SVRILN
KYC081-187-040145-
/O.NEW.KILN.SV.W.0021.180404T0109Z-180404T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
909 PM EDT TUE APR 3 2018

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Southeastern Grant County in northern Kentucky...
  Southeastern Owen County in northern Kentucky...

* Until 945 PM EDT.

* At 908 PM EDT, a severe thunderstorm was located 10 miles southeast
  of Owenton, moving east at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and power lines. 

* Locations impacted include...
  Williamstown, Corinth, Monterey, Elk Lake, Beechwood, Harmony,
  Cherry Grove, Natlee, Keefer, Camp Northward, New Columbus,
  Lawrenceville and Cordova.

This includes I-75 in Kentucky between mile markers 144 and 153.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

A tornado watch remains in effect until 100 AM EDT for northern
Kentucky.

LAT...LON 3835 8481 3836 8487 3837 8487 3838 8490
      3842 8488 3843 8492 3843 8493 3844 8492
      3864 8453 3859 8449 3855 8448 3851 8448
      3851 8452 3849 8456 3843 8463 3835 8475
      3834 8479
TIME...MOT...LOC 0108Z 247DEG 39KT 3842 8471 

HAIL...1.00IN
WIND...60MPH
 
$$

Haines

2 follow-up statements

322 
WWUS51 KILN 040118
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
918 PM EDT TUE APR 3 2018

KYC081-040128-
/O.CAN.KILN.SV.W.0021.000000T0000Z-180404T0145Z/
Grant KY-
918 PM EDT TUE APR 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRANT COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 100 AM EDT for northern
Kentucky.

LAT...LON 3847 8470 3849 8463 3848 8462 3848 8460
      3847 8458 3845 8461 3842 8464 3840 8468
      3841 8468
TIME...MOT...LOC 0118Z 247DEG 39KT 3846 8458 

$$

KYC187-040145-
/O.CON.KILN.SV.W.0021.000000T0000Z-180404T0145Z/
Owen KY-
918 PM EDT TUE APR 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHEASTERN OWEN COUNTY...

At 918 PM EDT, a severe thunderstorm was located 12 miles south of
Williamstown, moving northeast at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Minor hail damage to vehicles is possible. Expect wind 
         damage to trees and power lines. 

Locations impacted include...
Natlee and New Columbus. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

A tornado watch remains in effect until 100 AM EDT for northern
Kentucky.

LAT...LON 3847 8470 3849 8463 3848 8462 3848 8460
      3847 8458 3845 8461 3842 8464 3840 8468
      3841 8468
TIME...MOT...LOC 0118Z 247DEG 39KT 3846 8458 

HAIL...1.00IN
WIND...60MPH
 
$$

Haines

688 
WWUS51 KILN 040125
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
925 PM EDT TUE APR 3 2018

KYC187-040135-
/O.CAN.KILN.SV.W.0021.000000T0000Z-180404T0145Z/
Owen KY-
925 PM EDT TUE APR 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OWEN COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A tornado watch remains in effect until 100 AM EDT for northern
Kentucky.

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

LAT...LON 3847 8470 3849 8463 3848 8462 3848 8460
      3847 8458 3845 8461 3842 8464 3840 8468
      3841 8468
TIME...MOT...LOC 0124Z 247DEG 39KT 3849 8449 

$$

Haines

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 8:06 PM EDT	Severe Thunderstorm Warning	ILN	Boone, Campbell, Kenton	24 min
Apr 3, 8:31 PM EDT	Special Weather Statement	ILN	Grant, Owen	29 min
Apr 3, 8:58 PM EDT	Special Weather Statement	ILN	Grant, Owen, Pendleton	32 min
Apr 3, 9:02 PM EDT	Special Weather Statement	ILN	Grant, Owen, Pendleton	28 min
Apr 3, 9:34 PM EDT	Special Weather Statement	ILN	Bracken, Mason	26 min
Apr 4, 3:27 AM EDT	River Flood Advisory	ILN	Boone, Campbell, Kenton	59 hr
Apr 4, 3:07 PM EDT	Freeze Warning	ILN	Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 6 more	19 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2018 Every severe thunderstorm 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.