Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 81, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Sep 7, 2021, 1:37 PM EDT for Alcona County, Alpena County, Iosco County, Michigan. It was in force for 38 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 7, 2021, 1:37 PM EDT (17:37 UTC)
- Expired
- Sep 7, 2021, 2:15 PM EDT
- In force
- 38 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Alcona County, MI, Alpena County, MI, Iosco County, MI
The radar
The NCL Michigan radar (KAPX), 111 km from the middle of the area, began a volume at 17:37 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 |
|---|---|---|---|
| Sep 7, 12:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 5.6 hours before the alert went out and 83 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1018 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
682
WUUS53 KAPX 071737
SVRAPX
MIC001-007-069-071815-
/O.NEW.KAPX.SV.W.0081.210907T1737Z-210907T1815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
137 PM EDT Tue Sep 7 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Alcona County in northern Michigan...
South central Alpena County in northern Michigan...
Northeastern Iosco County in northern Michigan...
* Until 215 PM EDT.
* At 137 PM EDT, severe thunderstorms were located along a line
extending from Spruce to near Glennie, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Severe thunderstorms will be near...
Ossineke, Lost Lake Woods and Spruce around 145 PM EDT.
Negwegon State Park and Black River around 150 PM EDT.
Other locations in the path of these severe thunderstorms include
Mikado, Harrisville and Harrisville State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4461 8326 4448 8327 4449 8379 4486 8359
4494 8329 4490 8326 4487 8327 4485 8324
4475 8325 4471 8322
TIME...MOT...LOC 1737Z 260DEG 30KT 4484 8347 4451 8373
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GILLEN2 follow-up statements
083
WWUS53 KAPX 071751
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
151 PM EDT Tue Sep 7 2021
MIC007-071801-
/O.CAN.KAPX.SV.W.0081.000000T0000Z-210907T1815Z/
Alpena MI-
151 PM EDT Tue Sep 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ALPENA COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
northern Michigan.
LAT...LON 4461 8326 4448 8327 4449 8379 4469 8368
4486 8346 4486 8327 4485 8324 4475 8325
4471 8322
TIME...MOT...LOC 1751Z 260DEG 30KT 4486 8333 4453 8359
$$
MIC001-069-071815-
/O.CON.KAPX.SV.W.0081.000000T0000Z-210907T1815Z/
Alcona MI-Iosco MI-
151 PM EDT Tue Sep 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR EASTERN ALCONA AND NORTHEASTERN IOSCO COUNTIES...
At 151 PM EDT, severe thunderstorms were located along a line
extending from near Negwegon State Park to 6 miles southeast of
Glennie, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
These severe storms will be near...
Negwegon State Park and Black River around 155 PM EDT.
Other locations in the path of these severe thunderstorms include
Harrisville and Harrisville State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4461 8326 4448 8327 4449 8379 4469 8368
4486 8346 4486 8327 4485 8324 4475 8325
4471 8322
TIME...MOT...LOC 1751Z 260DEG 30KT 4486 8333 4453 8359
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GILLEN148
WWUS53 KAPX 071805
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
205 PM EDT Tue Sep 7 2021
MIC001-069-071815-
/O.EXP.KAPX.SV.W.0081.000000T0000Z-210907T1815Z/
Alcona MI-Iosco MI-
205 PM EDT Tue Sep 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ALCONA AND
NORTHEASTERN IOSCO COUNTIES WILL EXPIRE AT 215 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
northern Michigan.
LAT...LON 4461 8326 4448 8327 4449 8379 4469 8368
4486 8346 4486 8327 4485 8324 4475 8325
4471 8322
TIME...MOT...LOC 1805Z 270DEG 30KT 4488 8319 4455 8345
$$
GILLENThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 4:14 AM EDT | Beach Hazards Statement | APX | Alpena, Benzie, Charlevoix, Emmet, Leelanau, Mackinac and 1 more | 12 hr |
| Sep 7, 7:26 AM EDT | Special Marine Warning | APX | 2 hr | |
| Sep 7, 7:55 AM EDT | Special Marine Warning | APX | 95 min | |
| Sep 7, 8:26 AM EDT | Special Marine Warning | APX | 64 min | |
| Sep 7, 8:40 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 50 min |
| Sep 7, 8:57 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Manistee | 33 min |
| Sep 7, 9:25 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska | 50 min |
| Sep 7, 9:27 AM EDT | Special Marine Warning | APX | 33 min | |
| Sep 7, 9:29 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Kalkaska, Manistee, Missaukee, Wexford | 46 min |
| Sep 7, 10:26 AM EDT | Severe Thunderstorm Warning | APX | Missaukee, Wexford | 34 min |
| Sep 7, 10:49 AM EDT | Special Marine Warning | APX | 56 min | |
| Sep 7, 11:06 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Missaukee, Ogemaw, Oscoda, Roscommon | 24 min |
| Sep 7, 11:24 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Manistee | 51 min |
| Sep 7, 11:28 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska | 47 min |
| Sep 7, 11:30 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Crawford, Iosco, Ogemaw, Oscoda, Roscommon | 45 min |
| Sep 7, 11:56 AM EDT | Severe Thunderstorm Warning | APX | Manistee, Missaukee, Wexford | 34 min |
| Sep 7, 12:00 PM EDT | Severe Thunderstorm Warning | APX | Manistee | 30 min |
| Sep 7, 12:08 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco, Ogemaw | 14 min |
| Sep 7, 12:28 PM EDT | Severe Thunderstorm Warning | APX | Missaukee, Roscommon, Wexford | 47 min |
| Sep 7, 1:09 PM EDT | Severe Thunderstorm Warning | APX | Iosco | 16 min |
| Sep 7, 1:10 PM EDT | Special Marine Warning | APX | 2 hr | |
| Sep 7, 1:29 PM EDT | Severe Thunderstorm Warning | APX | Wexford | 19 min |
| Sep 7, 1:31 PM EDT | Special Marine Warning | APX | 67 min | |
| Sep 7, 1:31 PM EDT | Severe Thunderstorm Warning | APX | Missaukee, Roscommon | 29 min |
| Sep 7, 1:47 PM EDT | Severe Thunderstorm Warning | APX | Iosco, Ogemaw | 58 min |
| Sep 7, 2:22 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Gladwin, Iosco, Ogemaw | 53 min |
| Sep 7, 3:12 PM EDT | Special Marine Warning | APX | 70 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.