Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 51, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 28, 2021, 4:01 PM EDT for Alpena County, Montmorency County, Michigan. It was in force for 49 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 28, 2021, 4:01 PM EDT (20:01 UTC)
- Expired
- Aug 28, 2021, 4:50 PM EDT
- In force
- 49 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Alpena County, MI, Montmorency County, MI
The radar
The NCL Michigan radar (KAPX), 92 km from the middle of the area, began a volume at 20:01 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, 8.0 hours before the alert went out and 92 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
- 32 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 1106 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
057
WUUS53 KAPX 282001
SVRAPX
MIC007-119-282100-
/O.NEW.KAPX.SV.W.0051.210828T2001Z-210828T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
401 PM EDT Sat Aug 28 2021
The National Weather Service in Gaylord has issued a
* Severe Thunderstorm Warning for...
Alpena County in northern Michigan...
Eastern Montmorency County in northern Michigan...
* Until 500 PM EDT.
* At 400 PM EDT, severe thunderstorms were located along a line
extending from near Royston to near Fletcher Pond to near Lockwood
Lake, moving east at 25 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Royston around 405 PM EDT.
Long Rapids around 415 PM EDT.
Other locations in the path of these severe thunderstorms include
Ossineke Township, Spratt, Lachine, Cathro, Lakewood, Alpena and
Ossineke.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4499 8328 4504 8339 4495 8340 4492 8338
4485 8391 4486 8394 4489 8400 4506 8402
4520 8392 4521 8328 4516 8328 4502 8324
TIME...MOT...LOC 2000Z 254DEG 20KT 4518 8387 4500 8395 4489 8391
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cornish3 follow-up statements
754
WWUS53 KAPX 282020
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
420 PM EDT Sat Aug 28 2021
MIC119-282030-
/O.CAN.KAPX.SV.W.0051.000000T0000Z-210828T2100Z/
Montmorency MI-
420 PM EDT Sat Aug 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MONTMORENCY COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4499 8328 4504 8339 4495 8340 4492 8338
4485 8388 4487 8389 4498 8385 4508 8386
4520 8375 4521 8328 4516 8328 4502 8324
TIME...MOT...LOC 2020Z 261DEG 27KT 4520 8358 4502 8369 4487 8377
$$
MIC007-282100-
/O.CON.KAPX.SV.W.0051.000000T0000Z-210828T2100Z/
Alpena MI-
420 PM EDT Sat Aug 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR ALPENA COUNTY...
At 420 PM EDT, severe thunderstorms were located along a line
extending from near Cathro to near Spratt to near Ossineke Township,
moving east at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Cathro, Lakewood, Alpena and Ossineke.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4499 8328 4504 8339 4495 8340 4492 8338
4485 8388 4487 8389 4498 8385 4508 8386
4520 8375 4521 8328 4516 8328 4502 8324
TIME...MOT...LOC 2020Z 261DEG 27KT 4520 8358 4502 8369 4487 8377
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cornish923
WWUS53 KAPX 282037
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
437 PM EDT Sat Aug 28 2021
MIC007-282100-
/O.CON.KAPX.SV.W.0051.000000T0000Z-210828T2100Z/
Alpena MI-
437 PM EDT Sat Aug 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR CENTRAL ALPENA COUNTY...
At 437 PM EDT, severe thunderstorms were located along a line
extending from near Long Lake to 7 miles south of Cathro to near
Ossineke Township, moving east at 25 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Alpena, Ossineke, Ossineke Township, Cathro, Lakewood and Devils
Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4499 8328 4504 8339 4495 8340 4492 8339
4488 8369 4492 8374 4502 8375 4509 8366
4520 8362 4521 8328 4516 8328 4502 8324
TIME...MOT...LOC 2037Z 254DEG 20KT 4522 8348 4504 8359 4489 8367
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cornish493
WWUS53 KAPX 282050
SVSAPX
Severe Weather Statement
National Weather Service Gaylord MI
450 PM EDT Sat Aug 28 2021
MIC007-282059-
/O.CAN.KAPX.SV.W.0051.000000T0000Z-210828T2100Z/
Alpena MI-
450 PM EDT Sat Aug 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ALPENA COUNTY IS
CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail and
gusty winds are still possible with these thunderstorms.
LAT...LON 4499 8328 4504 8339 4495 8340 4492 8339
4488 8369 4492 8374 4502 8375 4509 8366
4520 8362 4521 8328 4516 8328 4502 8324
TIME...MOT...LOC 2049Z 254DEG 20KT 4523 8339 4505 8350 4490 8358
$$
CornishThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 12:49 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Manistee, Wexford | 56 min |
| Aug 28, 12:51 AM EDT | Flash Flood Warning | APX | Benzie | 3 hr |
| Aug 28, 1:08 AM EDT | Flash Flood Warning | APX | Grand Traverse | 3 hr |
| Aug 28, 1:40 AM EDT | Special Weather Statement | APX | Crawford, Kalkaska, Missaukee, Roscommon | 95 min |
| Aug 28, 3:42 AM EDT | Severe Thunderstorm Warning | APX | Arenac, Gladwin, Missaukee, Ogemaw, Roscommon | 63 min |
| Aug 28, 4:15 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Kalkaska, Manistee, Missaukee, Wexford | 60 min |
| Aug 28, 2:07 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska | 38 min |
| Aug 28, 2:59 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Ogemaw, Oscoda, Roscommon | 46 min |
| Aug 28, 3:14 PM EDT | Special Marine Warning | APX | 89 min | |
| Aug 28, 3:18 PM EDT | Small Craft Advisory | APX | 29 hr | |
| Aug 28, 3:26 PM EDT | Beach Hazards Statement | APX | Benzie, Charlevoix, Emmet, Leelanau, Mackinac, Manistee | 29 hr |
| Aug 28, 3:57 PM EDT | Severe Thunderstorm Warning | APX | Presque Isle | 33 min |
| Aug 28, 4:17 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco, Ogemaw, Oscoda | 43 min |
| Aug 28, 4:30 PM EDT | Special Marine Warning | APX | 2 hr | |
| Aug 28, 4:52 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco | 56 min |
| Aug 28, 5:05 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Gladwin, Iosco, Ogemaw | 55 min |
| Aug 28, 5:18 PM EDT | Special Marine Warning | APX | 117 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.