Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 61, NWS Wilmington, OH

July 16, 2021Boone County, Campbell County, Kenton County, Kentucky; Butler County, Clermont County, Hamilton County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 16, 2021, 2:36 PM EDT for Boone County, Campbell County, Kenton County, Kentucky; Butler County, Clermont County, Hamilton County, Ohio. It was in force for 39 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 16, 2021, 2:36 PM EDT (18:36 UTC)
Expired
Jul 16, 2021, 3:15 PM EDT
In force
39 min
Issued by
NWS Wilmington, OH
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Boone County, KY, Campbell County, KY, Kenton County, KY, Butler County, OH, Clermont County, OH, Hamilton County, OH

The radar

The Cincinnati radar (KILN), 63 km from the middle of the area, began a volume at 18:38 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 was reported inside it

TimeReportWhereRemark
Jul 16, 2:56 PM EDTTSTM WND DMGEse Bridgetown, OHMULTIPLE POWER LINES DOWN.
Jul 16, 3:10 PM EDTNON-TSTM WND DMG2 Nne Finneytown, OHMULTIPLE POWER LINES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.6 hours before the alert went out and 65 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2021-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 291 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2021-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
291 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
941 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

452 
WUUS51 KILN 161836
SVRILN
KYC015-037-117-OHC017-025-061-161915-
/O.NEW.KILN.SV.W.0061.210716T1836Z-210716T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
236 PM EDT Fri Jul 16 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Northern Kenton County in northern Kentucky...
  Northern Campbell County in northern Kentucky...
  Northern Boone County in northern Kentucky...
  Southeastern Hamilton County in southwestern Ohio...
  Southeastern Butler County in southwestern Ohio...
  Northwestern Clermont County in southwestern Ohio...

* Until 315 PM EDT.

* At 235 PM EDT, a severe thunderstorm was located over Oakbrook,
  moving northeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Cincinnati, Covington, Florence, Independence, Norwood, Forest
  Park, Erlanger, Fort Thomas, Newport, Sharonville, Blue Ash,
  Loveland, Springdale, Reading, Montgomery, North College Hill,
  Madeira, Edgewood, Alexandria and Elsmere.

This includes the following Interstates...
 I-71 in Ohio between mile markers 0 and 19.
 I-74 in Ohio between mile markers 14 and 19.
 I-75 in Kentucky between mile markers 177 and 191.
 I-75 in Ohio between mile markers 0 and 18, and near mile marker
22.

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.

&&

LAT...LON 3905 8482 3935 8438 3931 8435 3929 8435
      3929 8433 3906 8412 3892 8461
TIME...MOT...LOC 1835Z 241DEG 39KT 3900 8470 

HAIL...<.75IN
WIND...60MPH
 
$$

Campbell
3 follow-up statements
151 
WWUS51 KILN 161855
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
255 PM EDT Fri Jul 16 2021

KYC015-OHC017-161905-
/O.CAN.KILN.SV.W.0061.000000T0000Z-210716T1915Z/
Boone KY-Butler OH-
255 PM EDT Fri Jul 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BOONE AND
SOUTHEASTERN BUTLER COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3913 8470 3929 8435 3929 8433 3906 8412
      3892 8460 3901 8462 3907 8462
TIME...MOT...LOC 1855Z 241DEG 39KT 3911 8445 

$$

KYC037-117-OHC025-061-161915-
/O.CON.KILN.SV.W.0061.000000T0000Z-210716T1915Z/
Kenton KY-Campbell KY-Hamilton OH-Clermont OH-
255 PM EDT Fri Jul 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR NORTHERN KENTON...NORTHERN CAMPBELL...SOUTHEASTERN HAMILTON AND
NORTHWESTERN CLERMONT COUNTIES...

At 255 PM EDT, a severe thunderstorm was located over Dayton, moving
northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Cincinnati, Covington, Florence, Independence, Norwood, Erlanger,
Fort Thomas, Newport, Sharonville, Blue Ash, Loveland, Reading,
Montgomery, Madeira, Edgewood, Alexandria, Elsmere, Wyoming, Cheviot
and Fort Mitchell.

This includes the following Interstates...
 I-71 in Ohio between mile markers 0 and 19.
 I-74 in Ohio between mile markers 16 and 19.
 I-75 in Kentucky between mile markers 184 and 191.
 I-75 in Ohio between mile markers 0 and 13.

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3913 8470 3929 8435 3929 8433 3906 8412
      3892 8460 3901 8462 3907 8462
TIME...MOT...LOC 1855Z 241DEG 39KT 3911 8445 

HAIL...<.75IN
WIND...60MPH
 
$$

JDR
628 
WWUS51 KILN 161902
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
302 PM EDT Fri Jul 16 2021

KYC037-117-OHC025-061-161915-
/O.CON.KILN.SV.W.0061.000000T0000Z-210716T1915Z/
Kenton KY-Campbell KY-Hamilton OH-Clermont OH-
302 PM EDT Fri Jul 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR NORTHERN KENTON...NORTHERN CAMPBELL...SOUTHEASTERN HAMILTON AND
NORTHWESTERN CLERMONT COUNTIES...

At 301 PM EDT, a severe thunderstorm was located over Coldstream,
moving northeast at 45 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Cincinnati, Covington, Norwood, Fort Thomas, Newport, Blue Ash,
Loveland, Montgomery, Madeira, Alexandria, Highland Heights, Milford,
Taylor Mill, Bellevue, Deer Park, Fort Wright, Dayton, Ludlow,
Southgate and Park Hills.

This includes the following Interstates...
 I-71 in Ohio between mile markers 0 and 14.
 I-75 in Kentucky between mile markers 189 and 191.
 I-75 in Ohio between mile markers 0 and 1.

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3909 8457 3927 8431 3906 8412 3896 8446
TIME...MOT...LOC 1901Z 244DEG 38KT 3906 8436 

HAIL...<.75IN
WIND...70MPH
 
$$

Campbell
261 
WWUS51 KILN 161911
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
311 PM EDT Fri Jul 16 2021

KYC037-117-OHC025-061-161919-
/O.EXP.KILN.SV.W.0061.000000T0000Z-210716T1915Z/
Kenton KY-Campbell KY-Hamilton OH-Clermont OH-
311 PM EDT Fri Jul 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN KENTON...NORTHERN
CAMPBELL...SOUTHEASTERN HAMILTON AND NORTHWESTERN CLERMONT COUNTIES
WILL EXPIRE AT 315 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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.

Remember, a Severe Thunderstorm Warning still remains in effect for 
far eastern Campbell and southeast Hamilton counties, as well as 
northern Clermont until 345 PM. 

LAT...LON 3909 8457 3927 8431 3906 8412 3896 8446
TIME...MOT...LOC 1909Z 241DEG 39KT 3909 8428 

$$

JDR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 3:27 AM EDTFlash Flood WatchILNBoone, Campbell, Kenton29 hr
Jul 16, 1:15 PM EDTSpecial Weather StatementILNLewis30 min
Jul 16, 1:58 PM EDTSpecial Weather StatementILNCarroll, Gallatin32 min
Jul 16, 2:04 PM EDTSpecial Weather StatementILNBoone26 min
Jul 16, 2:11 PM EDTSevere Thunderstorm WarningILNBoone, Gallatin, Grant, Kenton, Owen49 min
Jul 16, 3:08 PM EDTSevere Thunderstorm WarningILNCampbell24 min
Jul 16, 3:50 PM EDTSpecial Weather StatementILNMason, Robertson25 min
Jul 16, 6:31 PM EDTSevere Thunderstorm WarningILNBoone, Kenton44 min
Jul 15, 8:27 PM EDTSpecial Weather StatementILNDarke33 min
Jul 16, 12:54 PM EDTSpecial Weather StatementILNHighland36 min
Jul 16, 1:21 PM EDTSpecial Weather StatementILNClinton24 min
Jul 16, 1:48 PM EDTSpecial Weather StatementILNPreble27 min
Jul 16, 2:06 PM EDTSpecial Weather StatementILNButler24 min
Jul 16, 2:07 PM EDTSpecial Weather StatementILNScioto38 min
Jul 16, 2:18 PM EDTSpecial Weather StatementILNMontgomery27 min
Jul 16, 2:27 PM EDTSevere Thunderstorm WarningILNClark, Greene, Montgomery48 min
Jul 16, 2:30 PM EDTSevere Thunderstorm WarningILNButler, Clinton, Greene, Montgomery, Warren45 min
Jul 16, 2:48 PM EDTSpecial Weather StatementILNClinton27 min
Jul 16, 3:05 PM EDTSevere Thunderstorm WarningILNClinton, Highland, Warren25 min
Jul 16, 3:08 PM EDTSevere Thunderstorm WarningILNClinton, Fayette, Greene, Madison34 min
Jul 16, 3:14 PM EDTSpecial Weather StatementILNPike16 min
Jul 16, 3:15 PM EDTSpecial Weather StatementILNBrown15 min
Jul 16, 3:30 PM EDTSpecial Weather StatementILNHighland30 min
Jul 16, 3:32 PM EDTSpecial Weather StatementILNFranklin28 min
Jul 16, 3:57 PM EDTSpecial Weather StatementILNHighland33 min
Jul 16, 4:03 PM EDTSpecial Weather StatementILNLicking27 min
Jul 16, 4:16 PM EDTSpecial Weather StatementILNRoss29 min
Jul 16, 4:21 PM EDTSpecial Weather StatementILNLicking9 min
Jul 16, 4:39 PM EDTSpecial Weather StatementILNRoss36 min
Jul 16, 4:54 PM EDTAreal Flood AdvisoryILNAdams3 hr
Jul 16, 5:03 PM EDTSpecial Weather StatementILNAdams27 min
Jul 16, 5:23 PM EDTFlash Flood WarningILNAdams2 hr
Jul 16, 5:23 PM EDTSpecial Weather StatementILNPike37 min
Jul 16, 5:30 PM EDTSevere Thunderstorm WarningILNAdams, Pike, Ross, Scioto30 min
Jul 16, 5:55 PM EDTSevere Thunderstorm WarningILNPike, Scioto18 min
Jul 16, 6:11 PM EDTAreal Flood AdvisoryILNPike, Scioto101 min
Jul 16, 6:39 PM EDTAreal Flood AdvisoryILNDarke, Preble112 min
Jul 16, 7:12 PM EDTSpecial Weather StatementILNHamilton33 min
Jul 16, 7:34 PM EDTAreal Flood AdvisoryILNButler, Preble54 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2021Severe Thunderstorm Warnings in Ohio, 2021Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.