Alert archive / Michigan / Tornado Warnings in 2021

Tornado Warning 4, NWS Northern Indiana

June 20, 2021Branch County, Hillsdale County, Michigan

NWS Northern Indiana issued this tornado warning at Jun 20, 2021, 10:15 PM EDT for Branch County, Hillsdale County, Michigan. It was in force for 45 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, 10:15 PM EDT (02:15 UTC)
Expired: Jun 20, 2021, 11:00 PM EDT
In force: 45 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Branch County, MI, Hillsdale County, MI

The radar

The Northern Indiana radar (KIWX), 114 km from the middle of the area, began a volume at 02:14 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, 10:45 PM EDT	TSTM WND DMG	Hillsdale, MI	SEVERAL REPORTS OF TREES AND POWERLINES DOWNED ACROSS NORTHERN HILLSDALE COUNTY FROM 1030-1100 PM.

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

Detroit, MI (KDTX), launched 00:00Z, 2.3 hours before the alert went out and 127 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: 133 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1501 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

047 
WFUS53 KIWX 210215
TORIWX
MIC023-059-210300-
/O.NEW.KIWX.TO.W.0004.210621T0215Z-210621T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Northern Indiana
1015 PM EDT Sun Jun 20 2021

The National Weather Service in Northern Indiana has issued a

* Tornado Warning for...
  Northeastern Branch County in southwestern Michigan...
  Northern Hillsdale County in southeastern Michigan...

* Until 1100 PM EDT.
    
* At 1014 PM EDT, a severe thunderstorm capable of producing a
  tornado was located near Quincy, or 8 miles east of Coldwater,
  moving east at 35 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...
  Litchfield around 1025 PM EDT.
  Hillsdale and Jonesville around 1030 PM EDT.

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 4191 8436 4191 8492 4202 8495 4207 8474
      4207 8436
TIME...MOT...LOC 0214Z 258DEG 29KT 4198 8484 

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

$$

FISHER

2 follow-up statements

336 
WWUS53 KIWX 210236
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
1036 PM EDT Sun Jun 20 2021

MIC023-210246-
/O.CAN.KIWX.TO.W.0004.000000T0000Z-210621T0300Z/
Branch MI-
1036 PM EDT Sun Jun 20 2021

...THE TORNADO WARNING FOR NORTHEASTERN BRANCH COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
southeastern Michigan.

LAT...LON 4191 8436 4191 8482 4205 8482 4207 8474
      4207 8436
TIME...MOT...LOC 0236Z 258DEG 29KT 4202 8461 

$$

MIC059-210300-
/O.CON.KIWX.TO.W.0004.000000T0000Z-210621T0300Z/
Hillsdale MI-
1036 PM EDT Sun Jun 20 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT FOR NORTHERN
HILLSDALE COUNTY...
    
At 1036 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Jonesville, or near Hillsdale, moving east at 35
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
  northern Hillsdale County, including the following locations...
  Jerome, Somerset Center, Allen, Moscow, Somerset and North Adams.

LAT...LON 4191 8436 4191 8482 4205 8482 4207 8474
      4207 8436
TIME...MOT...LOC 0236Z 258DEG 29KT 4202 8461 

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

$$

FISHER

265 
WWUS53 KIWX 210254
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
1054 PM EDT Sun Jun 20 2021

MIC059-210303-
/O.EXP.KIWX.TO.W.0004.000000T0000Z-210621T0300Z/
Hillsdale MI-
1054 PM EDT Sun Jun 20 2021

...THE TORNADO WARNING FOR NORTHERN HILLSDALE COUNTY WILL EXPIRE AT
1100 PM EDT...
        
The storm which prompted the warning has exited the warned area. 
Therefore, the warning will be allowed to expire. However gusty 
winds and heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
southeastern Michigan.

LAT...LON 4191 8436 4191 8482 4205 8482 4207 8474
      4207 8436
TIME...MOT...LOC 0253Z 258DEG 29KT 4205 8444 

$$

FISHER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:11 PM EDT	Severe Thunderstorm Warning	IWX	Branch, Saint Joseph	37 min
Jun 20, 8:57 PM EDT	Severe Thunderstorm Warning	IWX	Hillsdale	33 min
Jun 20, 9:38 PM EDT	Severe Thunderstorm Warning	IWX	Branch, Hillsdale	52 min
Jun 20, 9:57 PM EDT	Tornado Warning Tornado observed	IWX	Branch, Hillsdale	33 min
Jun 20, 10:57 PM EDT	Special Weather Statement	IWX	Berrien	33 min
Jun 20, 11:37 PM EDT	Special Weather Statement	IWX	Cass	23 min
Jun 20, 11:47 PM EDT	Special Weather Statement	IWX	Cass	28 min
Jun 21, 12:37 AM EDT	Severe Thunderstorm Warning	IWX	Berrien	38 min
Jun 21, 12:47 AM EDT	Severe Thunderstorm Warning	IWX	Berrien, Cass	43 min
Jun 21, 1:26 AM EDT	Tornado Warning	IWX	Berrien, Cass, Saint Joseph	34 min
Jun 21, 1:30 AM EDT	Severe Thunderstorm Warning	IWX	Berrien, Cass	45 min
Jun 21, 1:58 AM EDT	Severe Thunderstorm Warning	IWX	Branch, Cass, Saint Joseph	34 min
Jun 21, 2:35 AM EDT	Special Weather Statement	IWX	Branch, Hillsdale	55 min
Jun 21, 2:49 AM EDT	Special Weather Statement	IWX	Branch, Hillsdale	26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.