Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 127, NWS Northern Indiana

December 11, 20215 counties in Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Dec 11, 2021, 1:11 AM EST for 5 counties in Indiana. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 11, 2021, 1:11 AM EST (06:11 UTC)
Expired: Dec 11, 2021, 2:00 AM EST
In force: 49 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Blackford County, IN, Grant County, IN, Huntington County, IN, Wabash County, IN, Wells County, IN

The radar

The Northern Indiana radar (KIWX), 93 km from the middle of the area, began a volume at 06:10 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Dec 11, 12:20 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.2 hours before the alert went out and 198 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: 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.

532 
WUUS53 KIWX 110611
SVRIWX
INC009-053-069-169-179-110700-
/O.NEW.KIWX.SV.W.0127.211211T0611Z-211211T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
111 AM EST Sat Dec 11 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Southeastern Wabash County in north central Indiana...
  Grant County in central Indiana...
  Western Blackford County in east central Indiana...
  Southern Huntington County in northeastern Indiana...
  Southwestern Wells County in northeastern Indiana...

* Until 200 AM EST.

* At 110 AM EST, severe thunderstorms were located along a line
  extending from La Fontaine to Swayzee to near Windfall City to near
  Tipton, moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Marion, Hartford City, Gas City, Upland, Fairmount, Jonesboro,
  Sweetser, Swayzee, La Fontaine, Van Buren, Matthews, Sims, Warren,
  Fowlerton, Shamrock Lakes, Mcnatts, Landess, Liberty Center, Mount
  Zion and Mier.

This includes Interstate 69 in Indiana between mile markers 252 and
277.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM EST for central, north
central, northeastern and east central Indiana.

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

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

&&

LAT...LON 4049 8586 4071 8579 4072 8525 4053 8534
      4038 8542 4038 8586
TIME...MOT...LOC 0610Z 265DEG 30KT 4070 8572 4050 8582 4037 8587 4023
8599

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MARSILI

2 follow-up statements

721 
WWUS53 KIWX 110625
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
125 AM EST Sat Dec 11 2021

INC169-110635-
/O.CAN.KIWX.SV.W.0127.000000T0000Z-211211T0700Z/
Wabash IN-
125 AM EST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WABASH COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 600 AM EST for central,
northeastern and east central Indiana.

LAT...LON 4048 8571 4071 8559 4072 8525 4053 8534
      4038 8542 4038 8576
TIME...MOT...LOC 0625Z 265DEG 36KT 4071 8552 4051 8562 4038 8567 4024
8579

$$

INC009-053-069-179-110700-
/O.CON.KIWX.SV.W.0127.000000T0000Z-211211T0700Z/
Grant IN-Blackford IN-Huntington IN-Wells IN-
125 AM EST Sat Dec 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EST
FOR EASTERN GRANT...WESTERN BLACKFORD...SOUTHEASTERN HUNTINGTON AND
SOUTHWESTERN WELLS COUNTIES...

At 125 AM EST, severe thunderstorms were located along a line
extending from 6 miles north of Van Buren to Gas City to near
Fairmount to near Elwood, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Marion, Hartford City, Gas City, Upland, Fairmount, Jonesboro, Van
Buren, Matthews, Warren, Fowlerton, Shamrock Lakes, Mcnatts, Home
Corner, Michaelsville, Landess, Liberty Center, Mount Zion, Hanfield,
Buckeye and Roll.

This includes Interstate 69 in Indiana between mile markers 252 and
277.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM EST for central,
northeastern and east central Indiana.

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

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

&&

LAT...LON 4048 8571 4071 8559 4072 8525 4053 8534
      4038 8542 4038 8576
TIME...MOT...LOC 0625Z 265DEG 36KT 4071 8552 4051 8562 4038 8567 4024
8579

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MARSILI

045 
WWUS53 KIWX 110640
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
140 AM EST Sat Dec 11 2021

INC053-110649-
/O.CAN.KIWX.SV.W.0127.000000T0000Z-211211T0700Z/
Grant IN-
140 AM EST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GRANT COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of
the warned area.  Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 600 AM EST for central,
northeastern and east central Indiana.

LAT...LON 4043 8545 4046 8543 4071 8542 4072 8525
      4039 8541 4038 8542 4038 8544
TIME...MOT...LOC 0639Z 269DEG 39KT 4072 8537 4048 8538 4039 8546 4025
8564

$$

INC009-069-179-110700-
/O.CON.KIWX.SV.W.0127.000000T0000Z-211211T0700Z/
Blackford IN-Huntington IN-Wells IN-
140 AM EST Sat Dec 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EST
FOR WESTERN BLACKFORD...SOUTHEASTERN HUNTINGTON AND SOUTHWESTERN
WELLS COUNTIES...

At 139 AM EST, severe thunderstorms were located along a line
extending from 7 miles south of Markle to near Hartford City to near
Matthews to Alexandria, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Hartford City, Warren, Shamrock Lakes, Buckeye, Mcnatts, Roll,
Liberty Center and Mount Zion.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 AM EST for central,
northeastern and east central Indiana.

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

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

&&

LAT...LON 4043 8545 4046 8543 4071 8542 4072 8525
      4039 8541 4038 8542 4038 8544
TIME...MOT...LOC 0639Z 269DEG 39KT 4072 8537 4048 8538 4039 8546 4025
8564

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MARSILI

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 10, 10:58 PM EST	Severe Thunderstorm Warning	IWX	Pulaski, White	32 min
Dec 10, 11:18 PM EST	Severe Thunderstorm Warning	IWX	LaPorte, Starke	27 min
Dec 10, 11:22 PM EST	Severe Thunderstorm Warning	IWX	Fulton, Marshall, Pulaski, Starke	38 min
Dec 10, 11:23 PM EST	Special Marine Warning	IWX		37 min
Dec 10, 11:44 PM EST	Severe Thunderstorm Warning	IWX	Fulton, Marshall, Pulaski, Starke	31 min
Dec 10, 11:47 PM EST	Severe Thunderstorm Warning	IWX	LaPorte, Saint Joseph	28 min
Dec 10, 11:49 PM EST	Severe Thunderstorm Warning	IWX	Cass, Fulton, Pulaski, White	26 min
Dec 11, 12:07 AM EST	Severe Thunderstorm Warning	IWX	Marshall	23 min
Dec 11, 12:16 AM EST	Areal Flood Advisory	IWX	LaPorte, Marshall, Saint Joseph, Starke	3 hr
Dec 11, 12:19 AM EST	Severe Thunderstorm Warning	IWX	Cass, Fulton, Grant, Miami, Pulaski, Wabash and 1 more	56 min
Dec 11, 12:32 AM EST	Special Weather Statement	IWX	Kosciusko, Noble, Whitley	28 min
Dec 11, 12:41 AM EST	Severe Thunderstorm Warning	IWX	Fulton, Kosciusko, Noble, Whitley	34 min
Dec 11, 1:15 AM EST	Special Weather Statement	IWX	Allen, DeKalb, Huntington, Wabash, Whitley	30 min
Dec 11, 1:33 AM EST	Severe Thunderstorm Warning	IWX	Adams, Blackford, Jay, Wells	34 min
Dec 11, 2:43 AM EST	Special Weather Statement	IWX	Jay	32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.