Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 84, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Sep 14, 2021, 9:22 AM EDT for Cheboygan County, Presque Isle County, Michigan. It was in force for 23 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
- Sep 14, 2021, 9:22 AM EDT (13:22 UTC)
- Expired
- Sep 14, 2021, 9:45 AM EDT
- In force
- 23 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cheboygan County, MI, Presque Isle County, MI
The radar
The NCL Michigan radar (KAPX), 80 km from the middle of the area, began a volume at 13:26 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 nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 1.4 hours before the alert went out and 150 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
- 109 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted.
568
WUUS53 KAPX 141322
SVRAPX
MIC031-141-141345-
/O.NEW.KAPX.SV.W.0084.210914T1322Z-210914T1345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
922 AM EDT Tue Sep 14 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Eastern Cheboygan County in northern Michigan...
Northwestern Presque Isle County in northern Michigan...
* Until 945 AM EDT.
* At 921 AM EDT, severe thunderstorms were located along a line
extending from Alverno to near Black Lake to near Koehler Township,
moving northeast at 60 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Black Lake around 925 AM EDT.
Nine Mile Point and Onaway State Park around 930 AM EDT.
Huron Beach around 935 AM EDT.
Forty Mile Point and P H Hoeft State Park around 940 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4533 8453 4546 8446 4557 8455 4570 8429
4566 8418 4564 8415 4558 8408 4553 8407
4553 8393 4551 8388 4548 8382
TIME...MOT...LOC 1321Z 239DEG 67KT 4556 8442 4547 8435 4539 8439
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cornish2 follow-up statements
360
WWUS53 KAPX 141332
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
932 AM EDT Tue Sep 14 2021
MIC031-141341-
/O.CAN.KAPX.SV.W.0084.000000T0000Z-210914T1345Z/
Cheboygan MI-
932 AM EDT Tue Sep 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHEBOYGAN COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4548 8383 4540 8425 4557 8425 4560 8426
4562 8425 4562 8421 4566 8418 4558 8408
4553 8407 4553 8393
TIME...MOT...LOC 1331Z 243DEG 58KT 4564 8419 4555 8412 4547 8416
$$
MIC141-141345-
/O.CON.KAPX.SV.W.0084.000000T0000Z-210914T1345Z/
Presque Isle MI-
932 AM EDT Tue Sep 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM EDT
FOR NORTHWESTERN PRESQUE ISLE COUNTY...
At 931 AM EDT, severe thunderstorms were located along a line
extending from Nine Mile Point to near Huron Beach, moving northeast
at 65 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe storms will be near...
Forty Mile Point around 940 AM EDT.
Other locations in the path of these severe thunderstorms include P H
Hoeft State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4548 8383 4540 8425 4557 8425 4560 8426
4562 8425 4562 8421 4566 8418 4558 8408
4553 8407 4553 8393
TIME...MOT...LOC 1331Z 243DEG 58KT 4564 8419 4555 8412 4547 8416
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cornish925
WWUS53 KAPX 141337
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
937 AM EDT Tue Sep 14 2021
MIC141-141346-
/O.EXP.KAPX.SV.W.0084.000000T0000Z-210914T1345Z/
Presque Isle MI-
937 AM EDT Tue Sep 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PRESQUE ISLE
COUNTY WILL EXPIRE AT 945 AM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Gaylord.
LAT...LON 4548 8383 4540 8425 4557 8425 4560 8426
4562 8425 4562 8421 4566 8418 4558 8408
4553 8407 4553 8393
TIME...MOT...LOC 1336Z 270DEG 67KT 4568 8409 4559 8402 4551 8406
$$
CornishThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 3:00 AM EDT | Beach Hazards Statement | APX | Alpena, Benzie, Charlevoix, Cheboygan, Chippewa, Emmet and 4 more | 21 hr |
| Sep 14, 5:51 AM EDT | Special Marine Warning | APX | 84 min | |
| Sep 14, 8:00 AM EDT | Special Marine Warning | APX | 60 min | |
| Sep 14, 8:14 AM EDT | Special Marine Warning | APX | 31 min | |
| Sep 14, 8:41 AM EDT | Special Weather Statement | APX | Antrim, Cheboygan, Emmet, Otsego | 64 min |
| Sep 14, 8:50 AM EDT | Special Marine Warning | APX | 55 min | |
| Sep 14, 9:09 AM EDT | Special Weather Statement | APX | 51 min | |
| Sep 14, 9:34 AM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Otsego | 26 min |
| Sep 14, 9:40 AM EDT | Special Marine Warning | APX | 81 min | |
| Sep 14, 3:58 PM EDT | Special Marine Warning | APX | 62 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.