Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 124, NWS Northern Indiana

December 11, 2021Marshall County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Dec 11, 2021, 12:07 AM EST for Marshall County, Indiana. It was in force for 23 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, 12:07 AM EST (05:07 UTC)
Expired
Dec 11, 2021, 12:30 AM EST
In force
23 min
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Marshall County, IN

The radar

The Northern Indiana radar (KIWX), 41 km from the middle of the area, began a volume at 05:09 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.1 hours before the alert went out and 245 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2021-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 119 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2021-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 341 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
119 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
662 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
341 m²/s²
0-3 km storm-relative helicity
357 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

122 
WUUS53 KIWX 110507
SVRIWX
INC099-110530-
/O.NEW.KIWX.SV.W.0124.211211T0507Z-211211T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
1207 AM EST Sat Dec 11 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Marshall County in north central Indiana...

* Until 1230 AM EST.

* At 1206 AM EST, severe thunderstorms were located along a line
  extending from near Plymouth to near Culver, moving northeast at 70
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Plymouth, Bremen, Bourbon, Argos, Twin Lakes, Inwood, Rutland,
  Linkville, Lake Of The Woods and Tyner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4148 8612 4148 8606 4125 8606 4119 8634
      4142 8642
TIME...MOT...LOC 0506Z 236DEG 61KT 4142 8637 4117 8643 

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

$$

MARSILI
1 follow-up statement
722 
WWUS53 KIWX 110523
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
1223 AM EST Sat Dec 11 2021

INC099-110533-
/O.EXP.KIWX.SV.W.0124.000000T0000Z-211211T0530Z/
Marshall IN-
1223 AM EST Sat Dec 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR MARSHALL COUNTY WILL EXPIRE AT
1230 AM EST...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 4148 8612 4148 8606 4125 8606 4119 8634
      4142 8642
TIME...MOT...LOC 0523Z 236DEG 61KT 4157 8607 4132 8613 

$$

MARSILI

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 10:58 PM ESTSevere Thunderstorm WarningIWXPulaski, White32 min
Dec 10, 11:18 PM ESTSevere Thunderstorm WarningIWXLaPorte, Starke27 min
Dec 10, 11:22 PM ESTSevere Thunderstorm WarningIWXFulton, Marshall, Pulaski, Starke38 min
Dec 10, 11:23 PM ESTSpecial Marine WarningIWX37 min
Dec 10, 11:44 PM ESTSevere Thunderstorm WarningIWXFulton, Marshall, Pulaski, Starke31 min
Dec 10, 11:47 PM ESTSevere Thunderstorm WarningIWXLaPorte, Saint Joseph28 min
Dec 10, 11:49 PM ESTSevere Thunderstorm WarningIWXCass, Fulton, Pulaski, White26 min
Dec 11, 12:16 AM ESTAreal Flood AdvisoryIWXLaPorte, Marshall, Saint Joseph, Starke3 hr
Dec 11, 12:19 AM ESTSevere Thunderstorm WarningIWXCass, Fulton, Grant, Miami, Pulaski, Wabash and 1 more56 min
Dec 11, 12:32 AM ESTSpecial Weather StatementIWXKosciusko, Noble, Whitley28 min
Dec 11, 12:41 AM ESTSevere Thunderstorm WarningIWXFulton, Kosciusko, Noble, Whitley34 min
Dec 11, 1:11 AM ESTSevere Thunderstorm WarningIWXBlackford, Grant, Huntington, Wabash, Wells49 min
Dec 11, 1:15 AM ESTSpecial Weather StatementIWXAllen, DeKalb, Huntington, Wabash, Whitley30 min
Dec 11, 1:33 AM ESTSevere Thunderstorm WarningIWXAdams, Blackford, Jay, Wells34 min
Dec 11, 2:43 AM ESTSpecial Weather StatementIWXJay32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.