Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 56, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 29, 2021, 1:39 PM EDT for Chippewa County, Mackinac County, Michigan. It was in force for 51 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
- Aug 29, 2021, 1:39 PM EDT (17:39 UTC)
- Expired
- Aug 29, 2021, 2:30 PM EDT
- In force
- 51 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Chippewa County, MI, Mackinac County, MI
The radar
The NCL Michigan radar (KAPX), 126 km from the middle of the area, began a volume at 17:40 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 |
|---|---|---|---|
| Aug 29, 2:00 PM EDT | TSTM WND GST 42 | 3 Nnw Munuscong, MI | BUOY STATION WNEM4 WEST NEEBISH ISLAND, MI. |
| Aug 29, 2:00 PM EDT | NON-TSTM WND GST 42 | 3 Nnw Munuscong, MI | BUOY STATION WNEM4 WEST NEEBISH ISLAND, MI. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 5.7 hours before the alert went out and 182 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
- 221 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted.
290
WUUS53 KAPX 291739
SVRAPX
MIC033-097-291830-
/O.NEW.KAPX.SV.W.0056.210829T1739Z-210829T1830Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
139 PM EDT Sun Aug 29 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
South central Chippewa County in eastern Michigan...
Eastern Mackinac County in eastern Michigan...
* Until 230 PM EDT.
* At 138 PM EDT, severe thunderstorms were located along a line
extending from near Kinross to 8 miles east of Allenville to near
Wilderness State Park, moving northeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Barbeau and Donaldson around 150 PM EDT.
Straits State Park around 155 PM EDT.
Other locations in the path of these severe thunderstorms include St.
Ignace, Mackinac Island, Evergreen Shores, Pickford, Kelden,
Munuscong, Hessel and Cedarville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4620 8408 4615 8401 4606 8396 4606 8390
4608 8388 4592 8387 4591 8401 4594 8414
4588 8443 4594 8449 4591 8456 4593 8466
4592 8467 4585 8452 4581 8481 4583 8483
4582 8486 4630 8440 4642 8415
TIME...MOT...LOC 1738Z 235DEG 38KT 4623 8443 4601 8465 4573 8491
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
319
WWUS53 KAPX 291803
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
203 PM EDT Sun Aug 29 2021
MIC033-097-291830-
/O.CON.KAPX.SV.W.0056.000000T0000Z-210829T1830Z/
Chippewa MI-Mackinac MI-
203 PM EDT Sun Aug 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR SOUTH CENTRAL CHIPPEWA AND EAST CENTRAL MACKINAC COUNTIES...
At 203 PM EDT, severe thunderstorms were located along a line
extending from 7 miles northeast of Barbeau to near Pickford to
Mackinac Island, moving northeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Kelden, Munuscong, Cedarville, Hessel, Stalwart and Goetzville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4619 8408 4615 8401 4607 8396 4606 8390
4608 8388 4592 8387 4591 8401 4594 8414
4592 8431 4588 8443 4594 8449 4589 8460
4584 8456 4583 8469 4590 8463 4590 8460
4593 8460 4639 8414
TIME...MOT...LOC 1803Z 235DEG 38KT 4636 8417 4614 8439 4586 8465
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 4:14 AM EDT | Special Weather Statement | APX | Emmet | 46 min |
| Aug 29, 5:53 AM EDT | Special Weather Statement | APX | Ogemaw | 22 min |
| Aug 29, 1:28 PM EDT | Special Marine Warning | APX | 47 min | |
| Aug 29, 1:30 PM EDT | Special Marine Warning | APX | 45 min | |
| Aug 29, 1:37 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Emmet, Grand Traverse, Leelanau | 38 min |
| Aug 29, 1:58 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Emmet | 47 min |
| Aug 29, 2:12 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska, Missaukee, Wexford | 48 min |
| Aug 29, 2:17 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Cheboygan, Emmet, Otsego | 43 min |
| Aug 29, 2:28 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Kalkaska, Otsego | 32 min |
| Aug 29, 2:29 PM EDT | Special Marine Warning | APX | 91 min | |
| Aug 29, 2:55 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Montmorency, Otsego, Presque Isle | 35 min |
| Aug 29, 3:01 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Missaukee, Oscoda, Roscommon | 38 min |
| Aug 29, 3:22 PM EDT | Severe Thunderstorm Warning | APX | Alpena, Montmorency, Presque Isle | 53 min |
| Aug 29, 3:31 PM EDT | Special Marine Warning | APX | 89 min | |
| Aug 29, 3:36 PM EDT | Severe Thunderstorm Warning | APX | Ogemaw, Oscoda, Roscommon | 24 min |
| Aug 29, 5:00 PM EDT | Special Marine Warning | APX | 68 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.