Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 4, NWS Indianapolis, IN

March 27, 2021Boone County, Hendricks County, Montgomery County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 27, 2021, 10:00 PM EDT for Boone County, Hendricks County, Montgomery County, Indiana. It was in force for 30 min. 5 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
Mar 27, 2021, 10:00 PM EDT (02:00 UTC)
Expired
Mar 27, 2021, 10:30 PM EDT
In force
30 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Boone County, IN, Hendricks County, IN, Montgomery County, IN

The radar

The Indianapolis radar (KIND), 36 km from the middle of the area, began a volume at 02:04 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
Mar 27, 10:02 PM EDTTSTM WND DMG1 Nnw North Salem, INREPORTS OF TREES UPROOTED WITH SOME FALLING ON A COUPLE OF HOUSES. DOWNED POWERLINES. REPORT TIME WAS 11:39 PM. TIME OF OCCURRENCE ESTIMATED FROM RADAR.
Mar 27, 10:07 PM EDTHAIL 13 N Advance, INCORRECTS PREVIOUS HAIL REPORT FROM 3 N ADVANCE. REPORT FROM MPING: QUARTER (1.00 IN.).
Mar 27, 10:07 PM EDTHAIL 13 N Advance, INREPORT FROM MPING: QUARTER (1.00 IN.).
Mar 27, 10:25 PM EDTHAIL 0.752 Nw Zionsville, INREPORT FROM MPING: DIME (0.75 IN.).
Mar 27, 10:27 PM EDTHAIL 0.755 Nne Whitestown, INREPORT FROM MPING: DIME (0.75 IN.).

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

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.0 hours before the alert went out and 181 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 2021-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Lincoln, IL at 00:00Z on 2021-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
933 m above ground
0-6 km bulk shear
86 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

044 
WUUS53 KIND 280200
SVRIND
INC011-063-107-280230-
/O.NEW.KIND.SV.W.0004.210328T0200Z-210328T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
1000 PM EDT Sat Mar 27 2021

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Hendricks County in central Indiana...
  Boone County in central Indiana...
  Southeastern Montgomery County in west central Indiana...

* Until 1030 PM EDT.

* At 959 PM EDT, a severe thunderstorm was located 11 miles southwest
  of Lebanon, or 13 miles southeast of Crawfordsville, moving east at
  55 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lebanon, Zionsville, Whitestown, Jamestown, Lizton, Advance, New
  Ross and Ulen.

This includes the following highways...
 Interstate 65 between mile markers 129 and 142.
 Interstate 74 between mile markers 42 and 58.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4013 8625 4007 8624 3994 8624 3986 8669
      3987 8669 3987 8673 4002 8678
TIME...MOT...LOC 0159Z 254DEG 46KT 3997 8666 

HAIL...0.75IN
WIND...60MPH
 
$$

JAS
2 follow-up statements
151 
WWUS53 KIND 280214
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
1014 PM EDT Sat Mar 27 2021

INC063-107-280223-
/O.CAN.KIND.SV.W.0004.000000T0000Z-210328T0230Z/
Hendricks IN-Montgomery IN-
1014 PM EDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HENDRICKS AND
SOUTHEASTERN MONTGOMERY 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 4007 8624 3994 8624 3992 8633 3992 8656
      4006 8659 4013 8625
TIME...MOT...LOC 0213Z 254DEG 46KT 4002 8643 

$$

INC011-280230-
/O.CON.KIND.SV.W.0004.000000T0000Z-210328T0230Z/
Boone IN-
1014 PM EDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR SOUTHEASTERN BOONE COUNTY...

At 1013 PM EDT, a severe thunderstorm was located near Lebanon, or 18
miles south of Frankfort, moving east at 45 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Lebanon, Zionsville, Whitestown and Ulen. 

This includes Interstate 65 between mile markers 128 and 142.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4007 8624 3994 8624 3992 8633 3992 8656
      4006 8659 4013 8625
TIME...MOT...LOC 0213Z 254DEG 46KT 4002 8643 

HAIL...0.75IN
WIND...60MPH
 
$$

JAS
915 
WWUS53 KIND 280220
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
1020 PM EDT Sat Mar 27 2021

INC011-280230-
/O.CON.KIND.SV.W.0004.000000T0000Z-210328T0230Z/
Boone IN-
1020 PM EDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR SOUTHEASTERN BOONE COUNTY...

At 1019 PM EDT, a severe thunderstorm was located near Zionsville, or
19 miles southeast of Frankfort, moving east at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Lebanon, Zionsville, Whitestown and Ulen. 

This includes Interstate 65 between mile markers 128 and 139.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4007 8624 3994 8624 3992 8633 3992 8648
      4008 8649 4013 8625
TIME...MOT...LOC 0219Z 254DEG 46KT 4004 8632 

HAIL...1.00IN
WIND...60MPH
 
$$

JAS

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 27, 8:45 PM EDTSpecial Weather StatementINDVermillion30 min
Mar 27, 9:16 PM EDTSpecial Weather StatementINDMontgomery44 min
Mar 27, 9:19 PM EDTSpecial Weather StatementINDMontgomery41 min
Mar 27, 9:47 PM EDTSpecial Weather StatementINDMontgomery28 min
Mar 27, 10:26 PM EDTSevere Thunderstorm WarningINDBoone, Hamilton34 min
Mar 27, 10:53 PM EDTSpecial Weather StatementINDClay, Vigo37 min
Mar 27, 10:56 PM EDTSevere Thunderstorm WarningINDDelaware, Hamilton, Madison34 min
Mar 27, 11:24 PM EDTAreal Flood AdvisoryINDBoone, Montgomery3 hr
Mar 27, 11:35 PM EDTSpecial Weather StatementINDDelaware25 min
Mar 28, 12:22 AM EDTSpecial Weather StatementINDLawrence38 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.