Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 87, NWS Indianapolis, IN

December 5, 2021Decatur County, Jennings County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Dec 5, 2021, 11:57 PM EST for Decatur County, Jennings County, Indiana. It was in force for 33 min. 2 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: Dec 5, 2021, 11:57 PM EST (04:57 UTC)
Expired: Dec 6, 2021, 12:30 AM EST
In force: 33 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Decatur County, IN, Jennings County, IN

The radar

The Indianapolis radar (KIND), 85 km from the middle of the area, began a volume at 04:58 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

Time	Report	Where	Remark
Dec 6, 12:00 AM EST	HAIL 1	3 Ene Country Squire La, IN	SHARED WITH A PICTURE VIA TWITTER. TIME ESTIMATED BASED ON RADAR.
Dec 6, 12:15 AM EST	HAIL 0.25	Scipio, IN	REPORT VIA TWITTER.

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, 5.0 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 934 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 432 m²/s²
0-3 km storm-relative helicity: 509 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

778 
WUUS53 KIND 060457
SVRIND
INC031-079-060530-
/O.NEW.KIND.SV.W.0087.211206T0457Z-211206T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
1157 PM EST Sun Dec 5 2021

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Southwestern Decatur County in central Indiana...
  Northern Jennings County in southeastern Indiana...

* Until 1230 AM EST.

* At 1156 PM EST, a severe thunderstorm was located 7 miles north of
  North Vernon, or 15 miles southeast of Columbus, moving northeast
  at 55 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...
  Westport and Letts around 1205 AM EST.
  Millhousen around 1210 AM EST.

This includes Interstate 74 near mile marker 136.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3912 8544 3899 8568 3913 8579 3913 8569
      3920 8569 3937 8544
TIME...MOT...LOC 0456Z 239DEG 46KT 3911 8565 

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

$$

Puma

2 follow-up statements

101 
WWUS53 KIND 060506
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
1206 AM EST Mon Dec 6 2021

INC031-079-060530-
/O.CON.KIND.SV.W.0087.000000T0000Z-211206T0530Z/
Decatur IN-Jennings IN-
1206 AM EST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EST
FOR SOUTH CENTRAL DECATUR AND NORTHEASTERN JENNINGS COUNTIES...

At 1205 AM EST, a severe thunderstorm was located 9 miles northeast
of North Vernon, or 20 miles east of Columbus, 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.

This severe storm will be near...
  Millhousen around 1215 AM EST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3912 8544 3905 8557 3914 8563 3918 8561
      3932 8544
TIME...MOT...LOC 0505Z 252DEG 39KT 3913 8554 

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

$$

Puma

752 
WWUS53 KIND 060520
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
1220 AM EST Mon Dec 6 2021

INC031-079-060530-
/O.EXP.KIND.SV.W.0087.000000T0000Z-211206T0530Z/
Decatur IN-Jennings IN-
1220 AM EST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL DECATUR AND
NORTHEASTERN JENNINGS COUNTIES WILL EXPIRE AT 1230 AM EST...
        
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 3912 8544 3905 8557 3914 8563 3918 8561
      3932 8544
TIME...MOT...LOC 0520Z 239DEG 46KT 3916 8547 

$$

Puma

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 6, 6:05 AM EST	Areal Flood Advisory	IND	Jennings	3 hr
Dec 6, 12:09 PM EST	River Flood Warning	IND	Jackson, Jennings, Washington	8 hr
Dec 6, 4:35 PM EST	Areal Flood Advisory	IND	Martin	6 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2021 Every 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.