Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 16, NWS Grand Rapids, MI

June 26, 2021Allegan County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 26, 2021, 3:25 PM EDT for Allegan County, Michigan. It was in force for 57 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, 3:25 PM EDT (19:25 UTC)
Expired: Jun 26, 2021, 4:22 PM EDT
In force: 57 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Allegan County, MI

The radar

The Grand Rapids radar (KGRR), 53 km from the middle of the area, began a volume at 19:26 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, 7.4 hours before the alert went out and 215 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.

038 
WUUS53 KGRR 261925
SVRGRR
MIC005-262100-
/O.NEW.KGRR.SV.W.0016.210626T1925Z-210626T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
325 PM EDT Sat Jun 26 2021

The National Weather Service in Grand Rapids has issued a

* Severe Thunderstorm Warning for...
  Allegan County in southwestern Michigan...

* Until 500 PM EDT.

* At 325 PM EDT, a severe thunderstorm was located near Fennville, or
  12 miles northeast of South Haven, moving northeast at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Allegan around 340 PM EDT.

Other locations in the path of this severe thunderstorm include
Wayland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4258 8623 4264 8623 4270 8620 4277 8621
      4277 8555 4242 8555 4242 8627
TIME...MOT...LOC 1925Z 235DEG 46KT 4252 8610 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

LAURENS

4 follow-up statements

238 
WWUS53 KGRR 261936
SVSGRR

Severe Weather Statement
National Weather Service Grand Rapids MI
336 PM EDT Sat Jun 26 2021

MIC005-262100-
/O.CON.KGRR.SV.W.0016.000000T0000Z-210626T2100Z/
Allegan MI-
336 PM EDT Sat Jun 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR ALLEGAN COUNTY...

At 336 PM EDT, a severe thunderstorm was located 7 miles northwest of
Allegan, moving northeast at 50 mph.

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

SOURCE...Radar indicated.

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

This severe storm will be near...
  Allegan around 340 PM EDT.

Other locations in the path of this severe thunderstorm include
Wayland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 4251 8610 4265 8604 4277 8600 4277 8555
      4242 8555 4242 8619
TIME...MOT...LOC 1936Z 235DEG 43KT 4259 8596 

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

TJT

868 
WWUS53 KGRR 261950
SVSGRR

Severe Weather Statement
National Weather Service Grand Rapids MI
350 PM EDT Sat Jun 26 2021

MIC005-262100-
/O.CON.KGRR.SV.W.0016.000000T0000Z-210626T2100Z/
Allegan MI-
350 PM EDT Sat Jun 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR EASTERN ALLEGAN COUNTY...

At 350 PM EDT, a severe thunderstorm was located 6 miles southwest of
Wayland, or 8 miles northeast of Allegan, moving northeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe storm will be near...
  Wayland around 400 PM EDT.

Other locations impacted by this severe thunderstorm include Burnips,
Green Lake, Bradley, Shelbyville, Hopkins and Dorr.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 4250 8599 4258 8592 4277 8595 4277 8555
      4242 8555 4242 8607
TIME...MOT...LOC 1950Z 246DEG 42KT 4262 8574 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

TJT

299 
WWUS53 KGRR 262005
SVSGRR

Severe Weather Statement
National Weather Service Grand Rapids MI
405 PM EDT Sat Jun 26 2021

MIC005-262100-
/O.CON.KGRR.SV.W.0016.000000T0000Z-210626T2100Z/
Allegan MI-
405 PM EDT Sat Jun 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR EASTERN ALLEGAN COUNTY...

At 405 PM EDT, a severe thunderstorm was located near Wayland, or 14
miles west of Hastings, moving northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

This severe thunderstorm will remain over mainly rural areas of
eastern Allegan County, including the following locations...
Shelbyville, Green Lake, Dorr, Bradley and Hopkins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 4242 8595 4258 8577 4277 8572 4277 8555
      4242 8555
TIME...MOT...LOC 2005Z 238DEG 38KT 4270 8558 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

TJT

783 
WWUS53 KGRR 262022
SVSGRR

Severe Weather Statement
National Weather Service Grand Rapids MI
422 PM EDT Sat Jun 26 2021

MIC005-262032-
/O.CAN.KGRR.SV.W.0016.000000T0000Z-210626T2100Z/
Allegan MI-
422 PM EDT Sat Jun 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ALLEGAN COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe 
limits, and was exiting the warned area. Therefore, the warning has 
been cancelled.  However, gusty winds, lightning and heavy rain are 
still possible with this thunderstorm.

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

LAT...LON 4242 8595 4258 8577 4277 8572 4277 8555
      4242 8555
TIME...MOT...LOC 2020Z 235DEG 46KT 4283 8533 

$$

TJT

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 8:57 PM EDT	Marine Dense Fog Advisory	GRR		14 hr
Jun 26, 3:32 AM EDT	Small Craft Advisory	GRR		36 hr
Jun 26, 11:37 AM EDT	Areal Flood Advisory	GRR	Allegan, Ionia, Kent, Montcalm, Ottawa	4 hr
Jun 26, 12:56 PM EDT	Special Marine Warning	GRR		3 hr
Jun 26, 2:36 PM EDT	Areal Flood Advisory	GRR	Muskegon	4 hr
Jun 26, 3:10 PM EDT	Areal Flood Warning	GRR	Allegan, Barry, Ionia, Kalamazoo, Kent, Montcalm and 2 more	43 hr
Jun 26, 3:31 PM EDT	Severe Thunderstorm Warning	GRR	Mecosta	59 min
Jun 26, 3:39 PM EDT	Tornado Warning	GRR	Clare, Isabella, Mecosta	15 min
Jun 26, 3:49 PM EDT	Beach Hazards Statement	GRR	Allegan, Muskegon, Oceana, Ottawa, Van Buren	24 hr
Jun 26, 4:44 PM EDT	Tornado Warning	GRR	Ionia	31 min
Jun 26, 4:55 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Calhoun, Eaton, Kalamazoo	65 min
Jun 26, 4:58 PM EDT	Tornado Warning Tornado observed	GRR	Calhoun, Eaton	47 min
Jun 26, 5:05 PM EDT	Tornado Warning	GRR	Clinton	28 min
Jun 26, 5:20 PM EDT	Severe Thunderstorm Warning	GRR	Ingham	55 min
Jun 26, 5:29 PM EDT	Tornado Warning	GRR	Calhoun, Kalamazoo	61 min
Jun 26, 5:30 PM EDT	Severe Thunderstorm Warning	GRR	Clinton	17 min
Jun 26, 5:32 PM EDT	Tornado Warning Tornado observed	GRR	Ingham	58 min
Jun 26, 5:43 PM EDT	Tornado Warning	GRR	Eaton	32 min
Jun 26, 5:45 PM EDT	Areal Flood Advisory	GRR	Calhoun, Clinton, Eaton, Ingham, Jackson	2 hr
Jun 26, 6:12 PM EDT	Tornado Warning	GRR	Calhoun, Eaton, Ingham, Jackson	63 min
Jun 26, 6:28 PM EDT	Tornado Warning	GRR	Ingham	32 min
Jun 26, 7:14 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Ingham, Jackson	61 min
Jun 26, 7:54 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	51 min

Nearby

Severe Thunderstorm Warnings in Michigan, 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.