Alert archive / Michigan / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 8, NWS Gaylord, MI

June 11, 2017Cheboygan County, Emmet County, Mackinac County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Jun 11, 2017, 4:20 PM EDT for Cheboygan County, Emmet County, Mackinac County, Michigan. It was in force for 55 min. 10 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: Jun 11, 2017, 4:20 PM EDT (20:20 UTC)
Expired: Jun 11, 2017, 5:15 PM EDT
In force: 55 min
Issued by: NWS Gaylord, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cheboygan County, MI, Emmet County, MI, Mackinac County, MI

The radar

The NCL Michigan radar (KAPX), 108 km from the middle of the area, began a volume at 20:20 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
Jun 11, 4:36 PM EDT	TSTM WND GST 45	Mackinaw City, MI	BUOY STATION MACM4, MACKINAW CITY.
Jun 11, 4:36 PM EDT	NON-TSTM WND GST 45	Mackinaw City, MI	BUOY STATION MACM4, MACKINAW CITY.
Jun 11, 4:38 PM EDT	TSTM WND GST 60	Mackinac Island, MI	MEASURED AT KMCD.
Jun 11, 4:39 PM EDT	TSTM WND GST 54	1 Nw Pellston, MI	ASOS STATION PLN, PELLSTON RGNL AIRPORT OF EMMET COUNTY.
Jun 11, 4:42 PM EDT	TSTM WND DMG	4 E Pellston, MI	REPORT OF TREES DOWN. TIME ESTIMATED FROM RADAR.
Jun 11, 4:44 PM EDT	TSTM WND DMG	2 W Brutus, MI	TREES REPORTED DOWN IN MAPLE RIVER TWP. REPORT RELAYED FROM LAW ENFORCEMENT.
Jun 11, 4:47 PM EDT	TSTM WND DMG	2 N Harbor Springs, MI	POWER TRANSFORMER ON FIRE. RELAYED FROM LAW ENFORCEMENT.
Jun 11, 4:48 PM EDT	TSTM WND DMG	Stutsmanville, MI	TREES REPORTED DOWN OVER POWER LINES. RELAYED FROM LAW ENFORCEMENT.
Jun 11, 4:49 PM EDT	TSTM WND DMG	4 Ne Brutus, MI	POWER LINES DOWN. RELAYED VIA LAW ENFORCEMENT.
Jun 11, 4:55 PM EDT	TSTM WND DMG	2 Sse Aloha, MI	PICTURE RELAYED VIA SOCIAL MEDIA OF ROOF DAMAGE AT ALOHA TOWNSHIP FIRE HALL. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 11, 2:30 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 8.3 hours before the alert went out and 198 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1296 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

724 
WUUS53 KAPX 112020
SVRAPX
MIC031-047-097-112115-
/O.NEW.KAPX.SV.W.0008.170611T2020Z-170611T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
420 PM EDT SUN JUN 11 2017

The National Weather Service in Gaylord has issued a

* Severe Thunderstorm Warning for...
  Northern Cheboygan County in northern Michigan...
  Emmet County in northern Michigan...
  Eastern Mackinac County in eastern Michigan...

* Until 515 PM EDT

* At 420 PM EDT, severe thunderstorms were located along a line
  extending from near Brevort to 6 miles northwest of Wilderness
  State Park to near Good Hart to 8 miles north of Grand Traverse
  Light, moving northeast at 55 mph.

  HAZARD...60 mph wind gusts and penny size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Cheboygan, St. Ignace, Harbor Springs, Pellston, Mackinaw City,
  Mackinac Island, Indian River, Moran, Aloha, Carp Lake, Alanson,
  Bliss, Brevort, Cross Village, Cedarville, Aloha State Park, Good
  Hart, Hessel, Stutsmanville and Straits State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4607 8437 4607 8426 4599 8424 4598 8415
      4594 8409 4586 8435 4580 8427 4543 8442
      4542 8515 4559 8522 4569 8511 4581 8515
      4583 8498 4586 8497 4595 8508 4601 8523
      4616 8484 4616 8438
TIME...MOT...LOC 2020Z 245DEG 47KT 4599 8509 4583 8503 4561 8521 4533
8557

HAIL...0.75IN
WIND...60MPH
 
$$

MLR

1 follow-up statement

719 
WWUS53 KAPX 112040
SVSAPX

Severe Weather Statement
National Weather Service Gaylord MI
440 PM EDT SUN JUN 11 2017

MIC031-047-097-112115-
/O.CON.KAPX.SV.W.0008.000000T0000Z-170611T2115Z/
Cheboygan MI-Emmet MI-Mackinac MI-
440 PM EDT SUN JUN 11 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHERN CHEBOYGAN...EMMET AND EASTERN MACKINAC COUNTIES...

At 439 PM EDT, severe thunderstorms were located along a line
extending from 9 miles south of Rudyard to 6 miles northeast of
Mackinac Island to 6 miles east of Carp Lake to Petoskey, moving east
at 50 mph.

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Cheboygan, St. Ignace, Harbor Springs, Pellston, Mackinaw City,
Mackinac Island, Indian River, Moran, Aloha, Carp Lake, Alanson,
Bliss, Cross Village, Cedarville, Aloha State Park, Good Hart,
Hessel, Stutsmanville, Straits State Park and Cheboygan State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4605 8436 4605 8425 4597 8423 4596 8414
      4594 8410 4586 8435 4579 8427 4543 8442
      4542 8515 4557 8521 4567 8510 4584 8496
      4614 8483 4614 8438
TIME...MOT...LOC 2039Z 253DEG 67KT 4610 8459 4593 8453 4570 8466 4538
8496

HAIL...0.75IN
WIND...60MPH
 
$$

MLR

The office that day

Everything else NWS Gaylord, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 10:06 PM EDT	Beach Hazards Statement	APX	Benzie, Leelanau, Manistee	13 hr
Jun 11, 3:01 PM EDT	Special Marine Warning	APX		119 min
Jun 11, 3:39 PM EDT	Severe Thunderstorm Warning	APX	Charlevoix, Chippewa, Mackinac	50 min
Jun 11, 3:51 PM EDT	Severe Thunderstorm Warning	APX	Leelanau	33 min
Jun 11, 4:28 PM EDT	Special Marine Warning	APX		2 hr
Jun 11, 4:48 PM EDT	Severe Thunderstorm Warning	APX	Cheboygan, Chippewa, Mackinac	48 min
Jun 11, 5:03 PM EDT	Severe Thunderstorm Warning	APX	Cheboygan, Presque Isle	45 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2017 Every severe thunderstorm warning in 2017

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.