Alert archive / Indiana / Tornado Warnings in 2017

Tornado Warning 11, NWS Wilmington, OH

April 20, 2017Ripley County, Indiana

NWS Wilmington, OH issued this tornado warning at Apr 20, 2017, 7:44 PM EDT for Ripley County, Indiana. It was in force for 15 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 20, 2017, 7:44 PM EDT (23:44 UTC)
Expired: Apr 20, 2017, 7:59 PM EDT
In force: 15 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Ripley County, IN

The radar

The Indianapolis radar (KIND), 102 km from the middle of the area, began a volume at 23:47 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, 11.7 hours before the alert went out and 131 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: 234 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1148 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

992 
WFUS51 KILN 202344
TORILN
INC137-210015-
/O.NEW.KILN.TO.W.0011.170420T2344Z-170421T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington OH
744 PM EDT THU APR 20 2017

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  Northern Ripley County in southeastern Indiana...

* Until 815 PM EDT.

* At 744 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles northwest of Osgood, moving southeast at 25
  mph.

  HAZARD...Tornado and quarter size hail. 

  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...
  Milan, Osgood, Sunman, Napoleon, Millhousen, Ballstown and
  Versailles Lake.

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 3927 8530 3922 8508 3904 8518 3919 8544
      3920 8544
TIME...MOT...LOC 2344Z 299DEG 22KT 3923 8538 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

AR

1 follow-up statement

069 
WWUS51 KILN 202359
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
759 PM EDT THU APR 20 2017

INC137-210008-
/O.CAN.KILN.TO.W.0011.000000T0000Z-170421T0015Z/
Ripley IN-
759 PM EDT THU APR 20 2017

...THE TORNADO WARNING FOR NORTHERN RIPLEY COUNTY IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

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.

Remember, a Severe Thunderstorm Warning still remains in effect 
until 815 pm edt.

LAT...LON 3927 8530 3922 8508 3904 8518 3919 8544
      3920 8544
TIME...MOT...LOC 2357Z 299DEG 22KT 3919 8529 

$$

AR

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 3:21 PM EDT	Special Weather Statement	ILN	Union	24 min
Apr 20, 3:56 PM EDT	Special Weather Statement	ILN	Union	34 min
Apr 20, 4:16 PM EDT	Severe Thunderstorm Warning	ILN	Union	30 min
Apr 20, 7:14 PM EDT	Special Weather Statement	ILN	Ripley	31 min
Apr 20, 7:33 PM EDT	Severe Thunderstorm Warning	ILN	Dearborn, Franklin, Ripley	42 min
Apr 20, 7:52 PM EDT	Severe Thunderstorm Warning	ILN	Ripley	21 min

Nearby

Tornado Warnings in Indiana, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.