Alert archive / Michigan / Special Weather Statements in 2016

Special Weather Statement, NWS Gaylord, MI

July 17, 2016Mackinac County, Michigan

NWS Gaylord, MI issued this special weather statement at Jul 17, 2016, 9:31 PM EDT for Mackinac County, Michigan. It was in force for 29 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 17, 2016, 9:31 PM EDT (01:31 UTC)
Expired: Jul 17, 2016, 10:00 PM EDT
In force: 29 min
Issued by: NWS Gaylord, MI

County Mackinac County, MI

The radar

The Marquette radar (KMQT), 147 km from the middle of the area, began a volume at 01:31 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 00:00Z, 1.5 hours before the alert went out and 285 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: 15 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 667 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 247 m²/s²
0-3 km storm-relative helicity: 289 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 17, 7:26 PM EDT, 2 hours 5 minutes earlier.

Area forecast discussion, Jul 17, 7:26 PM EDT, 2 hours 5 minutes before

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Hazardous weather outlook, Jul 17, 4:00 PM EDT, 5 hours 31 minutes before

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In the hours before

Local storm report, Jul 17, 3:57 PM EDT, 5 hours 34 minutes before

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Special weather statement, Jul 17, 9:31 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
931 PM EDT SUN JUL 17 2016

MIZ015-180200-
MACKINAC-
931 PM EDT SUN JUL 17 2016

...A LINE OF THUNDERSTORMS WILL AFFECT NORTHWESTERN MACKINAC
COUNTY...

AT 930 PM EDT...RADAR INDICATED THUNDERSTORMS WERE LOCATED ALONG A
LINE EXTENDING FROM NEAR MCMILLAN TO 11 MILES EAST OF STEUBEN.
MOVEMENT WAS EAST AT 35 MPH.

WINDS IN EXCESS OF 30 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
CURTIS...CORINNE...GOULD CITY...ENGADINE AND GARFIELD TOWNSHIP.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 4624 8586 4624 8515 4605 8579 4607 8587
TIME...MOT...LOC 0130Z 272DEG 40KT 4632 8575 4624 8623

JZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 9:54 PM EDT	Special Marine Warning	APX		66 min
Jul 17, 10:00 PM EDT	Special Weather Statement	APX	Mackinac	45 min
Jul 17, 10:30 PM EDT	Special Marine Warning	APX		90 min
Jul 17, 10:55 PM EDT	Severe Thunderstorm Warning	APX	Mackinac	65 min
Jul 17, 11:56 PM EDT	Special Marine Warning	APX		64 min
Jul 18, 12:03 AM EDT	Special Weather Statement	APX	Cheboygan	27 min
Jul 18, 3:14 AM EDT	Small Craft Advisory	APX		17 hr

Nearby

Special Weather Statements in Michigan, 2016 Every special weather statement in 2016

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.