Alert archive / Michigan / Tornado Warnings in 2021

Tornado Warning 13, NWS Northern Indiana

June 26, 2021Cass County, Michigan

NWS Northern Indiana issued this tornado warning at Jun 26, 2021, 4:25 PM EDT for Cass County, Michigan. It was in force for 25 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: Jun 26, 2021, 4:25 PM EDT (20:25 UTC)
Expired: Jun 26, 2021, 4:50 PM EDT
In force: 25 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Cass County, MI

The radar

The Northern Indiana radar (KIWX), 60 km from the middle of the area, began a volume at 20:27 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
Jun 26, 1:05 PM EDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 8.4 hours before the alert went out and 221 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: 492 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

831 
WFUS53 KIWX 262025
TORIWX
MIC027-262100-
/O.NEW.KIWX.TO.W.0013.210626T2025Z-210626T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
425 PM EDT Sat Jun 26 2021

The National Weather Service in Northern Indiana has issued a

* Tornado Warning for...
  Southeastern Cass County in southwestern Michigan...

* Until 500 PM EDT.
    
* At 425 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Cassopolis, or 7 miles north of Simonton Lake,
  moving northeast at 25 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Cassopolis around 430 PM EDT.

Other locations impacted by this tornadic thunderstorm include Penn,
Jones, Vandalia, Diamond Lake, Paradise Lake, Calvin Center, Juno
Lake, Donnell Lake, Wakelee and Shavehead Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If in a mobile home, a
vehicle or outdoors, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 4189 8576 4188 8576 4179 8601 4186 8608
      4200 8587
TIME...MOT...LOC 2025Z 231DEG 23KT 4185 8600 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

JBALL

2 follow-up statements

430 
WWUS53 KIWX 262037
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
437 PM EDT Sat Jun 26 2021

MIC027-262100-
/O.CON.KIWX.TO.W.0013.000000T0000Z-210626T2100Z/
Cass MI-
437 PM EDT Sat Jun 26 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR EAST
CENTRAL CASS COUNTY...
    
At 437 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Cassopolis, or 10 miles north of Simonton Lake,
moving northeast at 25 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
east central Cass County, including the following locations...
Paradise Lake, Donnell Lake and Jones.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4189 8576 4188 8576 4185 8591 4189 8593
      4197 8584
TIME...MOT...LOC 2037Z 245DEG 21KT 4189 8589 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

JBALL

609 
WWUS53 KIWX 262050
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
450 PM EDT Sat Jun 26 2021

MIC027-262059-
/O.CAN.KIWX.TO.W.0013.000000T0000Z-210626T2100Z/
Cass MI-
450 PM EDT Sat Jun 26 2021

...THE TORNADO WARNING FOR EAST CENTRAL CASS COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM EDT for southwestern
Michigan.

LAT...LON 4189 8576 4188 8576 4185 8591 4189 8593
      4197 8584
TIME...MOT...LOC 2048Z 231DEG 23KT 4194 8581 

$$

JBALL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 2:29 AM EDT	Special Weather Statement	IWX	Saint Joseph	61 min
Jun 26, 2:55 AM EDT	Special Weather Statement	IWX	Saint Joseph	65 min
Jun 26, 3:28 AM EDT	Special Weather Statement	IWX	Saint Joseph	32 min
Jun 26, 10:35 AM EDT	River Flood Warning	IWX	Berrien	70 hr
Jun 26, 3:16 PM EDT	Severe Thunderstorm Warning	IWX	Berrien	32 min
Jun 26, 3:30 PM EDT	Special Weather Statement	IWX	Berrien	30 min
Jun 26, 4:16 PM EDT	Special Weather Statement	IWX	Cass	29 min
Jun 26, 4:38 PM EDT	Severe Thunderstorm Warning	IWX	Berrien	24 min
Jun 26, 4:59 PM EDT	Tornado Warning	IWX	Cass, Saint Joseph	17 min
Jun 26, 5:07 PM EDT	Special Weather Statement	IWX	Cass	23 min
Jun 26, 7:16 PM EDT	Severe Thunderstorm Warning	IWX	Berrien	44 min
Jun 26, 7:53 PM EDT	Severe Thunderstorm Warning	IWX	Cass, Saint Joseph	52 min

Nearby

Tornado Warnings in Michigan, 2021 Every tornado warning in 2021 Tornadoes 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.