Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 26, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 29, 2021, 1:19 PM EDT for Jackson County, Michigan. It was in force for 41 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 29, 2021, 1:19 PM EDT (17:19 UTC)
- Expired
- Jun 29, 2021, 2:00 PM EDT
- In force
- 41 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
County Jackson County, MI
The radar
The Detroit radar (KDTX), 91 km from the middle of the area, began a volume at 17:19 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
Detroit, MI (KDTX), launched 12:00Z, 5.3 hours before the alert went out and 95 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
- 681 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1064 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.3
The text
As transmitted.
095
WUUS53 KGRR 291719
SVRGRR
MIC075-291800-
/O.NEW.KGRR.SV.W.0026.210629T1719Z-210629T1800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
119 PM EDT Tue Jun 29 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Eastern Jackson County in south central Michigan...
* Until 200 PM EDT.
* At 118 PM EDT, severe thunderstorms were located along a line
extending from 7 miles northwest of Grass Lake to 6 miles west of
Cement City, moving east at 40 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Hail could cause damage to roofs, siding, windows, and
vehicles. Expect wind damage to roofs, siding, and trees.
* Locations impacted include...
Jackson... Brooklyn... Grass Lake...
Vandercook Lake... Leoni... Napoleon...
Norvell... Oak Point... Sunset Beach...
Michigan Center... Munith...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4207 8450 4208 8450 4243 8428 4242 8413
4208 8413
TIME...MOT...LOC 1718Z 254DEG 34KT 4235 8429 4208 8445
HAIL...1.75IN
WIND...60MPH
$$
MEADE1 follow-up statement
374
WWUS53 KGRR 291756
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
156 PM EDT Tue Jun 29 2021
MIC075-291804-
/O.EXP.KGRR.SV.W.0026.000000T0000Z-210629T1800Z/
Jackson MI-
156 PM EDT Tue Jun 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN JACKSON COUNTY WILL
EXPIRE AT 200 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds, dangerous lightning and torrential rainfall are still
possible through 215 PM over the far southeast corner of Jackson
county.
LAT...LON 4207 8450 4208 8450 4243 8428 4242 8413
4208 8413
TIME...MOT...LOC 1754Z 270DEG 34KT 4243 8386 4216 8402
$$
MEADEThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 2:53 AM EDT | Special Weather Statement | GRR | Calhoun, Jackson | 97 min |
| Jun 29, 9:43 AM EDT | River Flood Warning | GRR | Barry | 48 hr |
| Jun 29, 11:37 AM EDT | Special Weather Statement | GRR | Calhoun, Eaton, Ingham, Jackson | 83 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.