Alert archive / Indiana / Tornado Warnings in 2018

Tornado Warning 11, NWS Indianapolis, IN

August 6, 2018Carroll County, Indiana

NWS Indianapolis, IN issued this tornado warning at Aug 6, 2018, 9:49 PM EDT for Carroll County, Indiana. It was in force for 26 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
Aug 6, 2018, 9:49 PM EDT (01:49 UTC)
Expired
Aug 6, 2018, 10:15 PM EDT
In force
26 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Carroll County, IN

The radar

The Indianapolis radar (KIND), 94 km from the middle of the area, began a volume at 01:50 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

Lincoln, IL (KILX), launched 00:00Z, 1.8 hours before the alert went out and 180 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, Lincoln, IL at 00:00Z on 2018-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3036 joules per kilogram.LCLEL10008507005003002001001 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, Lincoln, IL at 00:00Z on 2018-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
3036 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1284 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
1.0
Supercell composite
11.4

Open this sounding in Storm Lab

The text

As transmitted.

792 
WFUS53 KIND 070149
TORIND
INC015-070215-
/O.NEW.KIND.TO.W.0011.180807T0149Z-180807T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Indianapolis IN
949 PM EDT MON AUG 6 2018

The National Weather Service in Indianapolis has issued a

* Tornado Warning for...
  Southern Carroll County in north central Indiana...

* Until 1015 PM EDT.
    
* At 948 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Delphi, or 13 miles northeast of Lafayette, moving
  east at 20 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.

* This dangerous storm will be near...
  Flora around 1005 PM EDT.
  Burlington around 1015 PM EDT.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4056 8637 4055 8637 4043 8640 4043 8669
      4056 8669 4056 8671 4057 8671
TIME...MOT...LOC 0148Z 281DEG 19KT 4051 8665 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Ryan
1 follow-up statement
658 
WWUS53 KIND 070155
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
955 PM EDT MON AUG 6 2018

INC015-070215-
/O.CON.KIND.TO.W.0011.000000T0000Z-180807T0215Z/
Carroll IN-
955 PM EDT MON AUG 6 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR SOUTHERN
CARROLL COUNTY...
    
At 954 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Delphi, or 15 miles northeast of Lafayette, moving
east at 20 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.

This dangerous storm will be near...
  Flora around 1005 PM EDT.
  Burlington around 1015 PM EDT.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4056 8637 4055 8637 4043 8640 4043 8669
      4056 8669 4056 8671 4057 8671
TIME...MOT...LOC 0154Z 281DEG 19KT 4050 8660 

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

$$

Ryan

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 6, 8:14 PM EDTSpecial Weather StatementINDCarroll46 min
Aug 6, 8:47 PM EDTSpecial Weather StatementINDTippecanoe43 min
Aug 6, 9:02 PM EDTSpecial Weather StatementINDWarren28 min
Aug 6, 9:18 PM EDTSevere Thunderstorm WarningINDCarroll, Tippecanoe14 min
Aug 6, 10:10 PM EDTSevere Thunderstorm WarningINDCarroll, Clinton, Howard, Tipton35 min
Aug 6, 10:47 PM EDTSpecial Weather StatementINDMadison, Tipton43 min
Aug 6, 11:04 PM EDTSpecial Weather StatementINDFountain, Warren41 min
Aug 6, 11:40 PM EDTFlash Flood WarningINDTippecanoe3 hr
Aug 6, 11:43 PM EDTSpecial Weather StatementINDFountain, Montgomery47 min
Aug 6, 11:49 PM EDTFlash Flood WarningINDFountain, Vermillion, Warren3 hr
Aug 7, 12:06 AM EDTSevere Thunderstorm WarningINDBoone, Hendricks, Montgomery, Putnam39 min
Aug 7, 12:34 AM EDTSevere Thunderstorm WarningINDBoone, Hamilton, Hendricks, Marion56 min

Nearby

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