Alert archive / Indiana / Tornado Warnings in 2018

Tornado Warning 1, NWS Wilmington, OH

February 21, 2018Dearborn County, Ripley County, Indiana

NWS Wilmington, OH issued this tornado warning at Feb 21, 2018, 4:38 AM EST for Dearborn County, Ripley County, Indiana. It was in force for 11 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: Feb 21, 2018, 4:38 AM EST (09:38 UTC)
Expired: Feb 21, 2018, 4:49 AM EST
In force: 11 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Dearborn County, IN, Ripley County, IN

The radar

The Cincinnati radar (KILN), 107 km from the middle of the area, began a volume at 09:40 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, 9.6 hours before the alert went out and 109 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1675 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

317 
WFUS51 KILN 210938
TORILN
INC029-137-211000-
/O.NEW.KILN.TO.W.0001.180221T0938Z-180221T1000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington OH
438 AM EST WED FEB 21 2018

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  East central Ripley County in southeastern Indiana...
  Central Dearborn County in southeastern Indiana...

* Until 500 AM EST.

* At 438 AM EST, a severe thunderstorm capable of producing a tornado
  was located over Moores Hill, moving northeast at 55 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Lawrenceburg, Greendale, Bright, Hidden Valley, Milan, Moores Hill,
  Guilford, Logan, Manchester, West Harrison, Mount Sinai, Cold
  Springs, Dover and Interstate 74 at US Route 52.

This includes I-74 in Indiana between mile markers 168 and 170.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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 3903 8511 3915 8517 3930 8483 3912 8482
TIME...MOT...LOC 0938Z 240DEG 48KT 3910 8509 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Novak

2 follow-up statements

106 
WWUS51 KILN 210942
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
442 AM EST WED FEB 21 2018

INC137-210952-
/O.CAN.KILN.TO.W.0001.000000T0000Z-180221T1000Z/
Ripley IN-
442 AM EST WED FEB 21 2018

...THE TORNADO WARNING FOR EAST CENTRAL RIPLEY COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3903 8511 3919 8509 3930 8483 3912 8482
TIME...MOT...LOC 0942Z 240DEG 48KT 3913 8503 

$$

INC029-211000-
/O.CON.KILN.TO.W.0001.000000T0000Z-180221T1000Z/
Dearborn IN-
442 AM EST WED FEB 21 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 AM EST FOR CENTRAL
DEARBORN COUNTY...
    
At 442 AM EST, a severe thunderstorm capable of producing a tornado
was located near Moores Hill, moving northeast at 55 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Lawrenceburg, Greendale, Bright, Hidden Valley, Moores Hill,
Guilford, Logan, Manchester, West Harrison, Mount Sinai, Cold
Springs, Dover and Interstate 74 at US Route 52.

This includes I-74 in Indiana between mile markers 168 and 170.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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 3903 8511 3919 8509 3930 8483 3912 8482
TIME...MOT...LOC 0942Z 240DEG 48KT 3913 8503 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Novak

663 
WWUS51 KILN 210949
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
449 AM EST WED FEB 21 2018

INC029-210959-
/O.CAN.KILN.TO.W.0001.000000T0000Z-180221T1000Z/
Dearborn IN-
449 AM EST WED FEB 21 2018

...THE TORNADO WARNING FOR CENTRAL DEARBORN COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

Please report previous tornadoes, 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 3903 8511 3919 8509 3930 8483 3912 8482
TIME...MOT...LOC 0947Z 240DEG 48KT 3918 8492 

$$

Novak

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 21, 4:22 AM EST	Special Weather Statement	ILN	Dearborn, Franklin, Ripley, Union	38 min
Feb 21, 4:51 AM EST	Special Weather Statement	ILN	Ohio, Switzerland	39 min
Feb 21, 5:01 AM EST	Special Weather Statement	ILN	Dearborn	44 min
Feb 21, 5:23 AM EST	Severe Thunderstorm Warning	ILN	Switzerland	37 min
Feb 21, 2:49 PM EST	Flood Watch	ILN	Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more	4 days

Nearby

Tornado Warnings in Indiana, 2018 Every tornado warning in 2018 Tornadoes 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.