Alert archive / Michigan / Special Weather Statements in 2018

Special Weather Statement, NWS Gaylord, MI

August 2, 2018Gladwin County, Ogemaw County, Roscommon County, Michigan

NWS Gaylord, MI issued this special weather statement at Aug 2, 2018, 9:34 AM EDT for Gladwin County, Ogemaw County, Roscommon County, Michigan. It was in force for 86 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 2, 2018, 9:34 AM EDT (13:34 UTC)
Expired: Aug 2, 2018, 11:00 AM EDT
In force: 86 min
Issued by: NWS Gaylord, MI

Counties Gladwin County, MI, Ogemaw County, MI, Roscommon County, MI

The radar

The NCL Michigan radar (KAPX), 70 km from the middle of the area, began a volume at 13:36 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, 1.6 hours before the alert went out and 185 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: 191 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 61 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 Aug 2, 7:17 AM EDT, 2 hours 17 minutes earlier.

Area forecast discussion, Aug 2, 7:17 AM EDT, 2 hours 17 minutes before

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Hazardous weather outlook, Aug 2, 3:10 AM EDT, 6 hours 24 minutes before

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In the hours before

Local storm report, Aug 2, 7:38 AM EDT, 1 hour 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GAYLORD MI
738 AM EDT THU AUG 2 2018

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

0700 AM     HEAVY RAIN       2 NE LUZERNE            44.64N 84.24W
08/02/2018  M1.49 INCH       OSCODA             MI   TRAINED SPOTTER

&&

BERGER

Special weather statement, Aug 2, 9:34 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Gaylord MI
934 AM EDT THU AUG 2 2018

MIZ029-034-035-041-042-021500-
Gladwin-Arenac-Roscommon-Ogemaw-Oscoda-
934 AM EDT THU AUG 2 2018

...A LINE OF THUNDERSTORMS WILL AFFECT NORTHWESTERN ARENAC...
NORTHERN GLADWIN...OGEMAW...ROSCOMMON AND SOUTHWESTERN OSCODA
COUNTIES...

At 933 AM EDT, radar indicated thunderstorms were located along a
line extending from 7 miles southeast of Marion to near Farwell.
Movement was northeast at 30 mph.

Winds in excess of 30 mph and pea size hail are possible with these
storms.

Locations impacted include...
Alger, Houghton Lake, Gladwin, West Branch, Prudenville, St. Helen,
Mio, Rose City, Skidway Lake, Hockaday, Roscommon Township, Lake St.
Helen, Skeels, Twin Lakes Area, Wooden Shoe Village, Rose Township,
Selkirk, Nester Township, Clear Lake and Bowmanville.

LAT...LON 4416 8461 4416 8485 4424 8485 4451 8442
      4451 8438 4454 8437 4468 8414 4416 8393
      4386 8460
TIME...MOT...LOC 1333Z 233DEG 27KT 4406 8502 4396 8498 4381 8492

ALM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 10:44 AM EDT	Special Weather Statement	APX	Arenac, Ogemaw	31 min
Aug 2, 11:21 AM EDT	Special Weather Statement	APX	Alcona, Iosco	24 min
Aug 2, 2:05 PM EDT	Special Weather Statement	APX	Gladwin	55 min

Nearby

Special Weather Statements in Michigan, 2018 Every 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.