Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 26, NWS Northern Indiana

June 20, 2021Allen County, DeKalb County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Jun 20, 2021, 7:49 PM EDT for Allen County, DeKalb County, Indiana. It was in force for 10 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, 7:49 PM EDT (23:49 UTC)
Expired: Jun 20, 2021, 7:59 PM EDT
In force: 10 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Allen County, IN, DeKalb County, IN

The radar

The Northern Indiana radar (KIWX), 64 km from the middle of the area, began a volume at 23:52 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, 7:57 PM EDT	TSTM WND DMG	4 S Leo-Cedarville, IN	LARGE LIMBS DOWNED.

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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.8 hours before the alert went out and 214 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: 596 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 798 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

965 
WUUS53 KIWX 202349 RRA
SVRIWX
INC003-033-210030-
/O.NEW.KIWX.SV.W.0026.210620T2349Z-210621T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
749 PM EDT Sun Jun 20 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Central Allen County in northeastern Indiana...
  Southeastern De Kalb County in northeastern Indiana...

* Until 830 PM EDT.

* At 749 PM EDT, a severe thunderstorm was located over Fort Wayne,
  moving northeast at 35 mph.

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

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  New Haven around 800 PM EDT.
  Grabill around 810 PM EDT.
  Woodburn around 815 PM EDT.
  St. Joe around 825 PM EDT.

Other locations impacted by this severe thunderstorm include Concord,
Harlan, Cuba, Leo-cedarville, Saint Joe and Spencerville In Dekalb
County.

This includes the following highways...
 Interstate 469 between mile markers 18 and 30.
 Interstate 69 in Indiana between mile markers 307 and 317.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4099 8513 4110 8522 4139 8488 4119 8480
      4112 8480
TIME...MOT...LOC 2349Z 232DEG 29KT 4108 8511 

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

JBALL

1 follow-up statement

876 
WWUS53 KIWX 202359
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
759 PM EDT Sun Jun 20 2021

INC003-033-210009-
/O.CAN.KIWX.SV.W.0026.000000T0000Z-210621T0030Z/
Allen IN-De Kalb IN-
759 PM EDT Sun Jun 20 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ALLEN AND SOUTHEASTERN
DE KALB 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.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
northeastern Indiana...and west central Ohio.

LAT...LON 4099 8513 4110 8522 4139 8488 4119 8480
      4112 8480
TIME...MOT...LOC 2358Z 232DEG 29KT 4113 8503 

$$

JBALL

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 8:16 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Saint Joseph	44 min
Jun 19, 8:20 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, LaGrange, Saint Joseph	40 min
Jun 19, 8:51 PM EDT	Areal Flood Advisory	IWX	Elkhart, LaGrange, Saint Joseph	3 hr
Jun 19, 8:53 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Marshall, Saint Joseph, Starke	52 min
Jun 19, 9:14 PM EDT	Areal Flood Advisory	IWX	LaPorte, Saint Joseph, Starke	3 hr
Jun 19, 9:21 PM EDT	Severe Thunderstorm Warning	IWX	Steuben	39 min
Jun 19, 9:43 PM EDT	Severe Thunderstorm Warning	IWX	Marshall, Starke	47 min
Jun 19, 10:30 PM EDT	Severe Thunderstorm Warning	IWX	Pulaski, Starke	60 min
Jun 20, 4:49 AM EDT	Small Craft Advisory	IWX		45 hr
Jun 20, 5:12 AM EDT	Beach Hazards Statement	IWX		49 hr
Jun 20, 5:52 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Marshall, Saint Joseph, Starke	38 min
Jun 20, 5:57 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Starke	33 min
Jun 20, 6:39 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, Fulton, Kosciusko, Marshall	51 min
Jun 20, 6:42 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, Marshall, Saint Joseph	26 min
Jun 20, 6:53 PM EDT	Severe Thunderstorm Warning	IWX	Marshall, Starke	22 min
Jun 20, 7:07 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, Marshall, Saint Joseph	23 min
Jun 20, 7:19 PM EDT	Severe Thunderstorm Warning	IWX	Elkhart, LaGrange, Noble	41 min
Jun 20, 7:47 PM EDT	Special Marine Warning	IWX		28 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.