Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 63, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 29, 2021, 3:22 PM EDT for Alpena County, Montmorency County, Presque Isle County, Michigan. It was in force for 53 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
- Aug 29, 2021, 3:22 PM EDT (19:22 UTC)
- Expired
- Aug 29, 2021, 4:15 PM EDT
- In force
- 53 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Alpena County, MI, Montmorency County, MI, Presque Isle County, MI
The radar
The NCL Michigan radar (KAPX), 99 km from the middle of the area, began a volume at 19:25 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 |
|---|---|---|---|
| Aug 29, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 7.4 hours before the alert went out and 88 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.
631
WUUS53 KAPX 291922
SVRAPX
MIC007-119-141-292015-
/O.NEW.KAPX.SV.W.0063.210829T1922Z-210829T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
322 PM EDT Sun Aug 29 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Alpena County in northern Michigan...
Southeastern Presque Isle County in northern Michigan...
Eastern Montmorency County in northern Michigan...
* Until 415 PM EDT.
* At 322 PM EDT, severe thunderstorms were located along a line
extending from near Forty Mile Point to 6 miles southwest of Bisma
Township to Garland, moving northeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
P H Hoeft State Park around 325 PM EDT.
Royston around 330 PM EDT.
Bisma Township around 335 PM EDT.
Loud Township and Hawks around 340 PM EDT.
Other locations in the path of these severe thunderstorms include
Atlanta, Metz, Lockwood Lake, Posen, Hagensville, Rogers City and
Fletcher Pond.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4499 8326 4502 8338 4499 8336 4497 8337
4485 8405 4486 8417 4513 8411 4552 8390
4545 8378 4545 8369 4539 8358 4539 8346
4528 8333 4523 8335 4521 8328 4516 8328
4510 8325 4509 8322 4500 8321
TIME...MOT...LOC 1922Z 235DEG 31KT 4550 8396 4518 8404 4483 8428
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
392
WWUS53 KAPX 291947
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
347 PM EDT Sun Aug 29 2021
MIC119-291957-
/O.CAN.KAPX.SV.W.0063.000000T0000Z-210829T2015Z/
Montmorency MI-
347 PM EDT Sun Aug 29 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MONTMORENCY COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
northern Michigan.
LAT...LON 4500 8330 4502 8338 4499 8336 4496 8339
4489 8388 4545 8376 4545 8369 4539 8358
4539 8346 4528 8333 4523 8335 4521 8328
4515 8328 4509 8323
TIME...MOT...LOC 1947Z 248DEG 42KT 4559 8362 4527 8370 4492 8394
$$
MIC007-141-292015-
/O.CON.KAPX.SV.W.0063.000000T0000Z-210829T2015Z/
Alpena MI-Presque Isle MI-
347 PM EDT Sun Aug 29 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR ALPENA AND SOUTHEASTERN PRESQUE ISLE COUNTIES...
At 347 PM EDT, severe thunderstorms were located along a line
extending from 14 miles northeast of Rogers City to Posen to near
Lockwood Lake, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Posen, Presque Isle Light, Presque Isle, Spratt, Thompsons Harbor
State Park, Lachine and Alpena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4500 8330 4502 8338 4499 8336 4496 8339
4489 8388 4545 8376 4545 8369 4539 8358
4539 8346 4528 8333 4523 8335 4521 8328
4515 8328 4509 8323
TIME...MOT...LOC 1947Z 248DEG 42KT 4559 8362 4527 8370 4492 8394
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, 1:39 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 51 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, 3:31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.