Alert archive / Indiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 38, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 20, 2021, 7:35 PM EDT for Boone County, Hamilton County, Marion County, 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
- Jun 20, 2021, 7:35 PM EDT (23:35 UTC)
- Expired
- Jun 20, 2021, 8:00 PM EDT
- In force
- 25 min
- Issued by
- NWS Indianapolis, IN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Boone County, IN, Hamilton County, IN, Marion County, IN
The radar
The Indianapolis radar (KIND), 40 km from the middle of the area, began a volume at 23:40 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 |
|---|---|---|---|
| Jun 20, 7:41 PM EDT | HAIL 1 | 3 Ese Zionsville, IN | IN THE VICINITY OF 9700 SHELBORNE ROAD JUST NORTH OF I-465 NORTH SIDE OF INDY. |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 20, 6:06 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.6 hours before the alert went out and 204 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.
- Mixed-layer CAPE
- 193 J/kg
- Mixed-layer CIN
- -275 J/kg
- Mixed-layer LCL
- 1214 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
336
WUUS53 KIND 202335
SVRIND
INC011-057-097-210000-
/O.NEW.KIND.SV.W.0038.210620T2335Z-210621T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
735 PM EDT Sun Jun 20 2021
The National Weather Service in Indianapolis has issued a
* Severe Thunderstorm Warning for...
Northwestern Marion County in central Indiana...
Eastern Boone County in central Indiana...
Hamilton County in central Indiana...
* Until 800 PM EDT.
* At 734 PM EDT, a severe thunderstorm was located over Zionsville,
or 13 miles north of Indianapolis, moving northeast at 30 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...
Carmel around 745 PM EDT.
Other locations in the path of this severe thunderstorm include
Westfield, Sheridan, Noblesville, Cicero and Morse Reservoir.
This includes Interstate 65 between mile markers 127 and 128.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4011 8593 3985 8618 3991 8633 3992 8633
3992 8634 4018 8628 4018 8624 4022 8624
4022 8623
TIME...MOT...LOC 2334Z 204DEG 27KT 3997 8623
HAIL...1.00IN
WIND...60MPH
$$
AU/502 follow-up statements
920
WWUS53 KIND 202349
SVSIND
Severe Weather Statement
National Weather Service Indianapolis IN
749 PM EDT Sun Jun 20 2021
INC011-057-097-210000-
/O.CON.KIND.SV.W.0038.000000T0000Z-210621T0000Z/
Marion IN-Boone IN-Hamilton IN-
749 PM EDT Sun Jun 20 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHWESTERN MARION...EASTERN BOONE AND HAMILTON COUNTIES...
At 747 PM EDT, a severe thunderstorm was located 7 miles northwest of
Carmel, or 19 miles north of Indianapolis, moving northeast at 30
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters. At 7:41 PM EDT 1 inch hail was
reported in Northern Marion County.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Morse Reservoir and Cicero.
This includes Interstate 65 near mile marker 128.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4011 8593 3985 8618 3992 8632 3992 8634
4018 8628 4018 8624 4022 8624 4021 8622
TIME...MOT...LOC 2347Z 204DEG 27KT 4006 8618
HAIL...1.00IN
WIND...60MPH
$$
AU/50292
WWUS53 KIND 202358
SVSIND
Severe Weather Statement
National Weather Service Indianapolis IN
758 PM EDT Sun Jun 20 2021
INC011-057-097-210007-
/O.EXP.KIND.SV.W.0038.000000T0000Z-210621T0000Z/
Marion IN-Boone IN-Hamilton IN-
758 PM EDT Sun Jun 20 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MARION...EASTERN
BOONE AND HAMILTON COUNTIES WILL EXPIRE AT 800 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 of up to 40 MPH are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
central Indiana.
LAT...LON 4011 8593 3985 8618 3992 8632 3992 8634
4018 8628 4018 8624 4022 8624 4021 8622
TIME...MOT...LOC 2357Z 204DEG 27KT 4010 8615
$$
AU/50The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 10:31 PM EDT | River Flood Warning | IND | Daviess, Gibson, Knox, Pike | 9 days |
| Jun 20, 6:26 PM EDT | River Flood Warning | IND | Johnson | 21 days |
| Jun 20, 6:26 PM EDT | River Flood Warning | IND | Gibson, Knox | 8 days |
| Jun 20, 6:26 PM EDT | River Flood Warning | IND | Lawrence, Martin | 6 days |
| Jun 20, 7:29 PM EDT | Special Weather Statement | IND | Hamilton | 31 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.