Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 21, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 26, 2021, 7:14 PM EDT for Calhoun County, Ingham County, Jackson County, Michigan. It was in force for 61 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, 7:14 PM EDT (23:14 UTC)
- Expired
- Jun 26, 2021, 8:15 PM EDT
- In force
- 61 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Calhoun County, MI, Ingham County, MI, Jackson County, MI
The radar
The Detroit radar (KDTX), 100 km from the middle of the area, began a volume at 23:14 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.
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, 11.2 hours before the alert went out and 104 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.
- 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
The text
As transmitted.
825
WUUS53 KGRR 262314
SVRGRR
MIC025-065-075-270015-
/O.NEW.KGRR.SV.W.0021.210626T2314Z-210627T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
714 PM EDT Sat Jun 26 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Southeastern Calhoun County in south central Michigan...
Jackson County in south central Michigan...
Southeastern Ingham County in south central Michigan...
* Until 815 PM EDT.
* At 714 PM EDT, severe thunderstorms were located along a line
extending from near Stockbridge to near Homer, moving northeast at
35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Jackson... Homer... Stockbridge...
Brooklyn... Grass Lake... Vandercook Lake...
Leoni... Spring Arbor... Napoleon...
Sandstone... Norvell... Bunker Hill...
Pulaski... Concord... Horton...
Parma... Hanover... Rives Junction...
Sunset Beach... Michigan Center...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 PM EDT for south central
Michigan.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4214 8489 4258 8415 4242 8413 4207 8414
4207 8488
TIME...MOT...LOC 2314Z 238DEG 30KT 4249 8415 4210 8487
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
MEADE3 follow-up statements
143
WWUS53 KGRR 262336
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
736 PM EDT Sat Jun 26 2021
MIC025-262346-
/O.CAN.KGRR.SV.W.0021.000000T0000Z-210627T0015Z/
Calhoun MI-
736 PM EDT Sat Jun 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CALHOUN COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 800 PM EDT for south central
Michigan.
LAT...LON 4220 8470 4238 8441 4245 8428 4253 8414
4242 8413 4207 8414 4207 8470
TIME...MOT...LOC 2336Z 252DEG 31KT 4239 8417 4216 8464
$$
MIC065-075-270015-
/O.CON.KGRR.SV.W.0021.000000T0000Z-210627T0015Z/
Jackson MI-Ingham MI-
736 PM EDT Sat Jun 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR JACKSON AND SOUTHEASTERN INGHAM COUNTIES...
At 736 PM EDT, severe thunderstorms were located along a line
extending from near Stockbridge to 8 miles southeast of Albion,
moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jackson... Stockbridge... Brooklyn...
Grass Lake... Vandercook Lake... Leoni...
Spring Arbor... Napoleon... Sandstone...
Norvell... Pulaski... Concord...
Horton... Parma... Hanover...
Fitchburg... Oak Point... Sunset Beach...
Michigan Center... Munith...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 PM EDT for south central
Michigan.
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 4220 8470 4238 8441 4245 8428 4253 8414
4242 8413 4207 8414 4207 8470
TIME...MOT...LOC 2336Z 252DEG 31KT 4239 8417 4216 8464
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
DUKE779
WWUS53 KGRR 262350
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
750 PM EDT Sat Jun 26 2021
MIC065-075-270015-
/O.CON.KGRR.SV.W.0021.000000T0000Z-210627T0015Z/
Jackson MI-Ingham MI-
750 PM EDT Sat Jun 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR NORTHERN JACKSON AND SOUTHEASTERN INGHAM COUNTIES...
At 750 PM EDT, severe thunderstorms were located along a line
extending from 7 miles northwest of Grass Lake to 6 miles southwest
of Jackson, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jackson... Stockbridge... Grass Lake...
Vandercook Lake... Leoni... Spring Arbor...
Sandstone... Parma... Fitchburg...
Michigan Center... Munith...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM EDT for south central
Michigan.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4225 8460 4237 8439 4245 8427 4253 8414
4242 8413 4222 8414 4216 8457
TIME...MOT...LOC 2350Z 248DEG 26KT 4235 8428 4221 8452
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
DUKE621
WWUS53 KGRR 270013
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
813 PM EDT Sat Jun 26 2021
MIC065-075-270023-
/O.EXP.KGRR.SV.W.0021.000000T0000Z-210627T0015Z/
Jackson MI-Ingham MI-
813 PM EDT Sat Jun 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JACKSON AND
SOUTHEASTERN INGHAM COUNTIES WILL EXPIRE AT 815 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1000 PM EDT for south central
Michigan.
LAT...LON 4225 8460 4237 8439 4245 8427 4253 8414
4242 8413 4222 8414 4216 8457
TIME...MOT...LOC 0013Z 238DEG 30KT 4245 8407 4231 8431
$$
DUKEThe 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, 3:25 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 57 min |
| 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 | 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 | 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, 7:54 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 51 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 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.