Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 2, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 11, 2021, 3:46 PM EDT for Clare County, Michigan. It was in force for 44 min. 2 reports 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 11, 2021, 3:46 PM EDT (19:46 UTC)
- Expired
- Jun 11, 2021, 4:30 PM EDT
- In force
- 44 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Clare County, MI
The radar
The NCL Michigan radar (KAPX), 102 km from the middle of the area, began a volume at 19:47 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 11, 3:50 PM EDT | TSTM WND DMG | 5 E Harrison, MI | MULTIPLE TREES DOWN. |
| Jun 11, 4:25 PM EDT | TSTM WND DMG | Farwell, MI | MULTIPLE TREES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 7.8 hours before the alert went out and 175 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
- 94 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 1136 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
185
WUUS53 KGRR 111946
SVRGRR
MIC035-112030-
/O.NEW.KGRR.SV.W.0002.210611T1946Z-210611T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
346 PM EDT Fri Jun 11 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Eastern Clare County in central Michigan...
* Until 430 PM EDT.
* At 345 PM EDT, a severe thunderstorm was located near Harrison, or
13 miles west of Gladwin, moving south at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is possible. Expect wind damage
to trees.
* Locations impacted include...
Clare... Farwell... Harrison...
Long Lake...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4409 8461 4400 8460 4382 8461 4382 8495
4410 8486
TIME...MOT...LOC 1945Z 004DEG 8KT 4403 8475
HAIL...1.00IN
WIND...60MPH
$$
OSTUNO2 follow-up statements
973
WWUS53 KGRR 112009
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
409 PM EDT Fri Jun 11 2021
MIC035-112030-
/O.CON.KGRR.SV.W.0002.000000T0000Z-210611T2030Z/
Clare MI-
409 PM EDT Fri Jun 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR SOUTHEASTERN CLARE COUNTY...
At 408 PM EDT, a severe thunderstorm was located 6 miles south of
Harrison, or 7 miles north of Clare, moving south at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to crops is expected. Expect wind damage to
trees.
Locations impacted include...
Clare... Farwell... Harrison...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4403 8466 4399 8461 4382 8461 4382 8495
4407 8485
TIME...MOT...LOC 2008Z 014DEG 11KT 4392 8481
HAIL...1.00IN
WIND...60MPH
$$
OSTUNO798
WWUS53 KGRR 112031
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
431 PM EDT Fri Jun 11 2021
MIC035-112040-
/O.EXP.KGRR.SV.W.0002.000000T0000Z-210611T2030Z/
Clare MI-
431 PM EDT Fri Jun 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLARE COUNTY HAS
EXPIRED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been allowed to expire.
LAT...LON 4403 8466 4399 8461 4382 8461 4382 8495
4407 8485
TIME...MOT...LOC 2030Z 004DEG 8KT 4387 8481
$$
OSTUNOThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 3:23 PM EDT | Special Weather Statement | GRR | Clare | 67 min |
| Jun 11, 4:13 PM EDT | Special Weather Statement | GRR | Isabella | 62 min |
| Jun 11, 5:41 PM EDT | Special Weather Statement | GRR | Clinton, Ionia | 64 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.