Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 42, NWS Indianapolis, IN

June 27, 2021Marion County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 27, 2021, 9:15 PM EDT for Marion County, Indiana. It was in force for 30 min. 1 report 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
Jun 27, 2021, 9:15 PM EDT (01:15 UTC)
Expired
Jun 27, 2021, 9:45 PM EDT
In force
30 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Marion County, IN

The radar

The Indianapolis radar (KIND), 12 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.

What was reported inside it

TimeReportWhereRemark
Jun 27, 9:15 PM EDTTSTM WND GST 59Indianapolis Int'L Airp, INWIND MEASUREMENT OF 51 KTS AT THE KIND ASOS.

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 00:00Z, 1.3 hours before the alert went out and 208 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 00:00Z on 2021-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 182 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2021-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
182 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1519 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

422 
WUUS53 KIND 280115
SVRIND
INC097-280145-
/O.NEW.KIND.SV.W.0042.210628T0115Z-210628T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
915 PM EDT Sun Jun 27 2021

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Marion County in central Indiana...

* Until 945 PM EDT.

* At 914 PM EDT, a severe thunderstorm was located near Speedway, or
  7 miles west of Indianapolis, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Speedway, Monument Circle and Eagle Creek Reservoir around 925 PM 
  EDT.
  Wynnedale and Spring Hill around 930 PM EDT.

Other locations in the path of this severe thunderstorm include
Warren Park, Rocky Ripple, Crows Nest, North Crows Nest, Indiana
State Fairgrounds, Meridian Hills, Williams Creek and Broad Ripple.

This includes the following highways...
 Interstate 65 between mile markers 106 and 124.
 Interstate 70 between mile markers 70 and 93.
 Interstate 74 between mile markers 70 and 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3980 8596 3963 8620 3963 8624 3969 8633
      3983 8633 3992 8628 3993 8615
TIME...MOT...LOC 0114Z 213DEG 26KT 3974 8627 

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

CP
2 follow-up statements
803 
WWUS53 KIND 280129
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
929 PM EDT Sun Jun 27 2021

INC097-280145-
/O.CON.KIND.SV.W.0042.000000T0000Z-210628T0145Z/
Marion IN-
929 PM EDT Sun Jun 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR NORTHWESTERN MARION COUNTY...

At 929 PM EDT, a severe thunderstorm was located near Speedway, or
near Indianapolis, moving northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe storm will be near...
  Williams Creek around 935 PM EDT.

This includes the following highways...
 Interstate 65 between mile markers 112 and 124.
 Interstate 70 between mile markers 83 and 85.
 Interstate 74 between mile markers 70 and 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3985 8603 3977 8614 3977 8624 3983 8633
      3992 8628 3993 8615
TIME...MOT...LOC 0129Z 211DEG 32KT 3985 8618 

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

CP
142 
WWUS53 KIND 280141
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
941 PM EDT Sun Jun 27 2021

INC097-280151-
/O.EXP.KIND.SV.W.0042.000000T0000Z-210628T0145Z/
Marion IN-
941 PM EDT Sun Jun 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MARION COUNTY
WILL EXPIRE AT 945 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 3985 8603 3977 8614 3977 8624 3983 8633
      3992 8628 3993 8615
TIME...MOT...LOC 0141Z 213DEG 26KT 3990 8613 

$$

CP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 8:27 PM EDTSpecial Weather StatementINDCarroll18 min
Jun 27, 8:42 PM EDTAreal Flood AdvisoryINDCarroll, Fountain, Tippecanoe, Warren6 hr
Jun 27, 8:46 PM EDTAreal Flood AdvisoryINDParke, Vermillion, Vigo6 hr
Jun 27, 8:52 PM EDTSpecial Weather StatementINDMarion23 min
Jun 27, 9:03 PM EDTSpecial Weather StatementINDBoone, Clinton42 min
Jun 27, 9:25 PM EDTSpecial Weather StatementINDParke35 min
Jun 27, 9:37 PM EDTSpecial Weather StatementINDHoward23 min
Jun 27, 9:40 PM EDTSpecial Weather StatementINDHamilton35 min
Jun 27, 10:14 PM EDTSpecial Weather StatementINDTipton31 min
Jun 28, 10:38 AM EDTRiver Flood WarningINDSullivan, Vigo6 days
Jun 28, 10:38 AM EDTRiver Flood WarningINDParke, Vermillion, Vigo62 hr
Jun 28, 10:38 AM EDTRiver Flood WarningINDKnox, Sullivan8 days
Jun 28, 10:38 AM EDTRiver Flood WarningINDKnox, Sullivan8 days
Jun 28, 4:27 PM EDTSpecial Weather StatementINDBrown33 min
Jun 28, 5:00 PM EDTSpecial Weather StatementINDJohnson30 min
Jun 28, 5:21 PM EDTSpecial Weather StatementINDMarion24 min
Jun 28, 5:31 PM EDTSpecial Weather StatementINDMarion29 min
Jun 28, 5:46 PM EDTSpecial Weather StatementINDMarion29 min
Jun 28, 6:12 PM EDTSpecial Weather StatementINDJackson33 min
Jun 28, 6:33 PM EDTSpecial Weather StatementINDHamilton27 min
Jun 28, 6:41 PM EDTSpecial Weather StatementINDMonroe34 min

Nearby

Severe Thunderstorm Warnings in Indiana, 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.