Alert archive / Michigan / Special Weather Statements in 2018

Special Weather Statement, NWS Gaylord, MI

July 29, 2018Mackinac County, Michigan

NWS Gaylord, MI issued this special weather statement at Jul 29, 2018, 4:06 PM EDT for Mackinac County, Michigan. It was in force for 24 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
Jul 29, 2018, 4:06 PM EDT (20:06 UTC)
Expired
Jul 29, 2018, 4:30 PM EDT
In force
24 min
Issued by
NWS Gaylord, MI

County Mackinac County, MI

The radar

The NCL Michigan radar (KAPX), 141 km from the middle of the area, began a volume at 20:09 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, 8.1 hours before the alert went out and 236 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-pSkew-T log-p diagram, Alpena, MI at 12:00Z on 2018-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 199 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 12:00Z on 2018-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
199 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1148 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gaylord, MI wrote its last area forecast discussion before this special weather statement went out at Jul 29, 2:28 PM EDT, 1 hour 38 minutes earlier.

Area forecast discussion, Jul 29, 2:28 PM EDT, 1 hour 38 minutes before
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Hazardous weather outlook, Jul 29, 3:42 PM EDT, 24 minutes before
Hazardous Weather Outlook
National Weather Service Gaylord MI
342 PM EDT Sun Jul 29 2018

LHZ345>349-LMZ323-341-342-344>346-LSZ321-322-MIZ008-015>036-041-
042-301200-
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
Manistee to Point Betsie MI-
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
St. Marys River Point Iroquois to E. Potagannissing Bay-Chippewa-
Mackinac-Emmet-Cheboygan-Presque Isle-Charlevoix-Leelanau-Antrim-
Otsego-Montmorency-Alpena-Benzie-Grand Traverse-Kalkaska-Crawford-
Oscoda-Alcona-Manistee-Wexford-Missaukee-Roscommon-Ogemaw-Iosco-
Gladwin-Arenac-
342 PM EDT Sun Jul 29 2018

This hazardous weather outlook is for northern Lower Michigan...
eastern Upper Michigan...and adjacent nearshore waters of Lake
Michigan...Lake Huron and Lake Superior.

.DAY ONE...Rest of this afternoon and tonight.

A few thunderstorms will occur across portions of eastern upper
and northern lower Michigan 9 pm. Strongest storms could produce
hail up to one inch in diameter and gusty winds.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is another chance for thunderstorms in portions of both
eastern upper and northern lower Michigan Monday afternoon. No
severe storms are expected.

Additional thunderstorm chances for Thursday, especially across
northern lower Michigan.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any significant weather and
rainfall amounts to the National Weather Service. Reports may be
made one of three ways:

Online:   weather.gov/gaylord
Facebook: facebook.com/nwsgaylord
Twitter:  twitter.com/nwsgaylord

&&

For more information visit http://weather.gov/gaylord.

In the hours before

Local storm report, Jul 29, 2:22 PM EDT, 1 hour 44 minutes before
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Local storm report, Jul 29, 2:59 PM EDT, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
259 PM EDT SUN JUL 29 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0258 PM     HAIL             KINGSLEY                44.59N 85.53W
07/29/2018  M0.25 INCH       GRAND TRAVERSE     MI   PUBLIC

            WIND GUSTS TO 45 MPH DRIVING SMALL HAIL AND
            SWAYING LARGE PINES IN YARD.

&&

SWR
Special weather statement, Jul 29, 3:35 PM EDT, 31 minutes before
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Special weather statement, Jul 29, 3:53 PM EDT, 13 minutes before
Special Weather Statement
National Weather Service Gaylord MI
353 PM EDT SUN JUL 29 2018

MIZ032-033-292030-
Missaukee-Wexford-
353 PM EDT SUN JUL 29 2018

...A STRONG THUNDERSTORM WILL AFFECT EASTERN WEXFORD AND
WESTERN MISSAUKEE COUNTIES...

At 353 PM EDT, a strong thunderstorm was located near Manton, moving
east at 15 mph.

Winds in excess of 40 mph and dime size hail are possible with this
storm.

Locations impacted include...
Cadillac, Lake City, Manton, Mcbain, Lucas and Jennings.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

LAT...LON 4427 8553 4444 8548 4440 8511 4417 8522
TIME...MOT...LOC 1953Z 286DEG 13KT 4433 8542

JZ
Special weather statement, Jul 29, 3:59 PM EDT, 7 minutes before
Special Weather Statement
National Weather Service Gaylord MI
359 PM EDT SUN JUL 29 2018

MIZ022-023-292030-
Otsego-Montmorency-
359 PM EDT SUN JUL 29 2018

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN OTSEGO AND
SOUTHWESTERN MONTMORENCY COUNTIES...

At 357 PM EDT, a strong thunderstorm was located between
Johannesburg and Lewiston, moving east at 15 mph.

Winds in excess of 40 mph and dime size hail are possible with this
storm.

Locations impacted include...
Lewiston, Hetherton, Chester Township and Johannesburg.

If you are on or near a lake, get out of the water and move indoors
or inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning.

LAT...LON 4486 8421 4485 8440 4486 8455 4503 8447
      4499 8415
TIME...MOT...LOC 1957Z 286DEG 13KT 4493 8442

JZ
Special weather statement, Jul 29, 4:06 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Gaylord MI
406 PM EDT SUN JUL 29 2018

MIZ008-015-292030-
Chippewa-Mackinac-
406 PM EDT SUN JUL 29 2018

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL CHIPPEWA AND NORTH
CENTRAL MACKINAC COUNTIES...

At 406 PM EDT, a strong thunderstorm was located over Trout Lake, or
25 miles northwest of St. Ignace, moving east at 15 mph.

Winds in excess of 40 mph and dime size hail are possible with this
storm.

Locations impacted include...
Trout Lake, Fibre and East Lake.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in Gaylord.

LAT...LON 4614 8514 4625 8508 4620 8478 4606 8487
TIME...MOT...LOC 2006Z 286DEG 13KT 4617 8502

JZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 1:16 PM EDTSpecial Weather StatementAPXCheboygan29 min
Jul 29, 1:17 PM EDTSpecial Weather StatementAPXChippewa28 min
Jul 29, 1:56 PM EDTSpecial Weather StatementAPXChippewa94 min
Jul 29, 2:08 PM EDTSpecial Weather StatementAPXPresque Isle82 min
Jul 29, 2:11 PM EDTSpecial Marine WarningAPX72 min
Jul 29, 3:35 PM EDTSpecial Weather StatementAPXChippewa25 min
Jul 29, 3:53 PM EDTSpecial Weather StatementAPXMissaukee37 min
Jul 29, 3:59 PM EDTSpecial Weather StatementAPXMontmorency31 min
Jul 29, 4:16 PM EDTSpecial Weather StatementAPXOscoda14 min
Jul 29, 5:01 PM EDTSpecial Weather StatementAPXAlcona29 min
Jul 29, 5:22 PM EDTSevere Thunderstorm WarningAPXAlcona35 min
Jul 29, 5:24 PM EDTSpecial Marine WarningAPX44 min

Nearby

Special Weather Statements in Michigan, 2018Every special weather statement in 2018

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.