Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 88, NWS Indianapolis, IN

December 10, 20214 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Dec 10, 2021, 9:38 PM EST for 4 counties in Indiana. It was in force for 25 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
Dec 10, 2021, 9:38 PM EST (02:38 UTC)
Expired
Dec 10, 2021, 10:03 PM EST
In force
25 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bartholomew County, IN, Brown County, IN, Johnson County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 56 km from the middle of the area, began a volume at 02:42 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
Dec 10, 9:45 PM ESTTSTM WND DMG3 Ne Gnaw Bone, INTREES AND POWER LINES DOWN ALL OVER BROWN COUNTY. TIME ESTIMATED FROM RADAR.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 10, 8:47 PM ESTTornado WatchSPC8 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.6 hours before the alert went out and 176 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 2021-12-11Temperature 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, Cncnati-Daytn, OH at 00:00Z on 2021-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 325 square meters per square second.1939587897Sfc1 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
519 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
325 m²/s²
0-3 km storm-relative helicity
431 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

961 
WUUS53 KIND 110238
SVRIND
INC005-013-081-145-110315-
/O.NEW.KIND.SV.W.0088.211211T0238Z-211211T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
938 PM EST Fri Dec 10 2021

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Southern Shelby County in central Indiana...
  Southeastern Johnson County in central Indiana...
  Northern Brown County in south central Indiana...
  Northern Bartholomew County in central Indiana...

* Until 1015 PM EST.

* At 938 PM EST, a severe thunderstorm was located near Nashville, or
  14 miles west of Columbus, moving northeast at 65 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.

* This severe thunderstorm will be near...
  Princes Lakes around 945 PM EST.
  Edinburgh and Taylorsville around 950 PM EST.
  Flat Rock and Clifford around 955 PM EST.

Other locations in the path of this severe thunderstorm include Hope,
Marietta, Shelbyville and Geneva.

This includes Interstate 65 between mile markers 70 and 87.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 300 AM EST for central and
south central Indiana.

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

A Tornado Watch remains in effect until 300 AM EST for central and
south central Indiana.

&&

LAT...LON 3935 8568 3931 8568 3912 8628 3920 8633
      3958 8582 3940 8563 3935 8563
TIME...MOT...LOC 0238Z 234DEG 58KT 3921 8618 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KH
2 follow-up statements
147 
WWUS53 KIND 110252
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
952 PM EST Fri Dec 10 2021

INC013-110301-
/O.CAN.KIND.SV.W.0088.000000T0000Z-211211T0315Z/
Brown IN-
952 PM EST Fri Dec 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BROWN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 300 AM EST for central and
south central Indiana.

LAT...LON 3935 8568 3931 8569 3924 8602 3931 8609
      3933 8608 3958 8582 3940 8563 3935 8563
TIME...MOT...LOC 0251Z 234DEG 58KT 3934 8595 

$$

INC005-081-145-110315-
/O.CON.KIND.SV.W.0088.000000T0000Z-211211T0315Z/
Shelby IN-Johnson IN-Bartholomew IN-
952 PM EST Fri Dec 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EST
FOR SOUTHERN SHELBY...SOUTHEASTERN JOHNSON AND NORTHERN BARTHOLOMEW
COUNTIES...

At 951 PM EST, a severe thunderstorm was located 9 miles north of
Columbus, moving northeast at 65 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.

This severe storm will be near...
  Flat Rock around 955 PM EST.

Other locations in the path of this severe thunderstorm include Hope,
Marietta, Shelbyville and Geneva.

This includes Interstate 65 between mile markers 73 and 85.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 300 AM EST for central and
south central Indiana.

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

&&

LAT...LON 3935 8568 3931 8569 3924 8602 3931 8609
      3933 8608 3958 8582 3940 8563 3935 8563
TIME...MOT...LOC 0251Z 234DEG 58KT 3934 8595 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KH
220 
WWUS53 KIND 110303
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
1003 PM EST Fri Dec 10 2021

INC005-081-145-110313-
/O.CAN.KIND.SV.W.0088.000000T0000Z-211211T0315Z/
Shelby IN-Johnson IN-Bartholomew IN-
1003 PM EST Fri Dec 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SHELBY...SOUTHEASTERN
JOHNSON AND NORTHERN BARTHOLOMEW COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A Tornado Watch remains in effect until 300 AM EST for central and
south central Indiana.

LAT...LON 3935 8568 3931 8569 3924 8602 3931 8609
      3933 8608 3958 8582 3940 8563 3935 8563
TIME...MOT...LOC 0302Z 234DEG 58KT 3946 8574 

$$

KH

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 8:30 PM ESTSpecial Weather StatementINDDaviess, Lawrence, Martin45 min
Dec 10, 9:22 PM ESTSpecial Weather StatementINDJennings23 min
Dec 10, 9:34 PM ESTSpecial Weather StatementINDBrown26 min
Dec 10, 11:14 PM ESTSpecial Weather StatementINDHendricks, Johnson, Marion, Morgan, Shelby31 min
Dec 10, 11:32 PM ESTSevere Thunderstorm WarningINDFountain, Vermillion, Warren28 min
Dec 10, 11:42 PM ESTSevere Thunderstorm Warning Considerable damage threatINDDaviess, Greene, Knox, Martin, Monroe, Owen33 min
Dec 10, 11:45 PM ESTTornado WarningINDFountain, Parke, Vermillion30 min
Dec 10, 11:55 PM ESTSevere Thunderstorm Warning Considerable damage threatINDDaviess, Greene, Knox, Sullivan35 min
Dec 10, 11:55 PM ESTSevere Thunderstorm WarningINDFountain, Montgomery, Parke, Tippecanoe, Vermillion, Vigo and 1 more35 min
Dec 11, 12:10 AM ESTTornado WarningINDDaviess, Greene, Knox, Sullivan22 min
Dec 11, 12:16 AM ESTSevere Thunderstorm WarningINDCarroll, Clinton, Montgomery, Parke, Putnam, Tippecanoe29 min
Dec 11, 12:36 AM ESTSevere Thunderstorm WarningINDBoone, Carroll, Clinton, Hamilton, Howard, Montgomery and 1 more24 min
Dec 11, 12:58 AM ESTSevere Thunderstorm WarningINDBoone, Clinton, Hamilton, Hendricks, Howard, Madison and 4 more32 min
Dec 11, 1:05 AM ESTSevere Thunderstorm WarningINDParke, Vermillion, Vigo25 min
Dec 11, 1:18 AM ESTSevere Thunderstorm WarningINDDelaware, Hamilton, Henry, Madison, Tipton38 min
Dec 11, 1:28 AM ESTSevere Thunderstorm WarningINDClay, Parke, Putnam, Vigo32 min
Dec 11, 1:44 AM ESTAreal Flood AdvisoryINDBoone, Clinton, Montgomery, Parke, Putnam, Vermillion4 hr
Dec 11, 1:49 AM ESTSevere Thunderstorm WarningINDHendricks, Putnam26 min
Dec 11, 1:59 AM ESTSevere Thunderstorm WarningINDHendricks, Putnam21 min
Dec 11, 2:08 AM ESTSpecial Weather StatementINDDaviess, Greene, Knox, Martin52 min
Dec 11, 2:15 AM ESTSevere Thunderstorm WarningINDHamilton, Marion30 min
Dec 11, 2:35 AM ESTSevere Thunderstorm WarningINDDelaware, Henry, Madison25 min
Dec 11, 2:40 AM ESTSpecial Weather StatementINDBrown, Johnson, Monroe50 min
Dec 11, 2:56 AM ESTSevere Thunderstorm WarningINDDelaware, Randolph34 min
Dec 11, 2:56 AM ESTSevere Thunderstorm WarningINDBartholomew, Brown, Johnson, Monroe, Morgan, Shelby34 min
Dec 11, 3:31 AM ESTAreal Flood AdvisoryINDBoone, Delaware, Hamilton, Madison, Tipton3 hr
Dec 11, 3:39 AM ESTSpecial Weather StatementINDRush36 min
Dec 11, 3:44 AM ESTSevere Thunderstorm WarningINDRush16 min
Dec 11, 3:53 AM ESTSpecial Weather StatementINDJennings37 min
Dec 11, 10:17 AM ESTAreal Flood WarningINDRush23 hr
Dec 11, 11:49 AM ESTRiver Flood WarningINDDelaware, Randolph16 hr

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.