Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 80, NWS Indianapolis, IN

September 14, 2021Delaware County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Sep 14, 2021, 10:28 PM EDT for Delaware County, Indiana. It was in force for 32 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: Sep 14, 2021, 10:28 PM EDT (02:28 UTC)
Expired: Sep 14, 2021, 11:00 PM EDT
In force: 32 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Delaware County, IN

The radar

The Indianapolis radar (KIND), 92 km from the middle of the area, began a volume at 02:31 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
Sep 14, 10:29 PM EDT	TSTM WND DMG	1 S Muncie, IN	TREE LIMBS ONE INCH IN DIAMETER BROKEN. SHINGLES BLOWN OFF.
Sep 14, 10:33 PM EDT	HAIL 0.5	1 Ene Yorktown, IN

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, 2.5 hours before the alert went out and 155 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: 1109 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1416 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

318 
WUUS53 KIND 150228
SVRIND
INC035-150300-
/O.NEW.KIND.SV.W.0080.210915T0228Z-210915T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
1028 PM EDT Tue Sep 14 2021

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Southeastern Delaware County in east central Indiana...

* Until 1100 PM EDT.

* At 1027 PM EDT, a severe thunderstorm was located near Muncie,
  moving east at 25 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...
  Prairie Creek Reservoir around 1045 PM EDT.

Other locations in the path of this severe thunderstorm include
Selma.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

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

&&

LAT...LON 4008 8531 4011 8553 4017 8547 4022 8549
      4020 8522 4008 8521
TIME...MOT...LOC 0227Z 266DEG 21KT 4016 8543 

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

$$

MK

1 follow-up statement

765 
WWUS53 KIND 150253
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
1053 PM EDT Tue Sep 14 2021

INC035-150302-
/O.EXP.KIND.SV.W.0080.000000T0000Z-210915T0300Z/
Delaware IN-
1053 PM EDT Tue Sep 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DELAWARE COUNTY
WILL EXPIRE AT 1100 PM EDT...
                
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 will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect for
part of sooutheastern Delaware county until 1115 PM EDT.

LAT...LON 4008 8531 4011 8553 4017 8547 4022 8549
      4020 8522 4008 8521
TIME...MOT...LOC 0252Z 266DEG 21KT 4017 8527 

$$

MK

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 14, 8:26 PM EDT	Special Weather Statement	IND	Clinton	34 min
Sep 14, 9:47 PM EDT	Special Weather Statement	IND	Delaware	28 min
Sep 14, 10:05 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Randolph	25 min
Sep 14, 10:47 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry	28 min
Sep 14, 11:18 PM EDT	Special Weather Statement	IND	Rush	27 min
Sep 14, 11:45 PM EDT	Special Weather Statement	IND	Rush	30 min
Sep 14, 11:53 PM EDT	Areal Flood Advisory	IND	Hancock, Hendricks, Johnson, Marion, Morgan, Rush and 1 more	3 hr
Sep 14, 11:57 PM EDT	Areal Flood Advisory	IND	Delaware, Henry, Randolph	3 hr
Sep 15, 12:03 AM EDT	Special Weather Statement	IND	Shelby	27 min
Sep 15, 12:39 AM EDT	Special Weather Statement	IND	Rush	36 min

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.