Alert archive / Michigan / Special Weather Statements in 2011

Special Weather Statement, NWS Grand Rapids, MI

August 9, 2011Lake County, Mason County, Osceola County, Michigan

NWS Grand Rapids, MI issued this special weather statement at Aug 9, 2011, 10:56 AM EDT for Lake County, Mason County, Osceola County, Michigan. It was in force for 64 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 9, 2011, 10:56 AM EDT (14:56 UTC)
Expired: Aug 9, 2011, 12:00 PM EDT
In force: 64 min
Issued by: NWS Grand Rapids, MI

Counties Lake County, MI, Mason County, MI, Osceola County, MI

The radar

The Grand Rapids radar (KGRR), 132 km from the middle of the area, began a volume at 14:56 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

Detroit, MI (KDTX), launched 12:00Z, 2.9 hours before the alert went out and 257 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: 22 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 628 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Grand Rapids, MI wrote its last area forecast discussion before this special weather statement went out at Aug 9, 7:53 AM EDT, 3 hours 3 minutes earlier.

Area forecast discussion, Aug 9, 7:53 AM EDT, 3 hours 3 minutes before

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Hazardous weather outlook, Aug 9, 5:30 AM EDT, 5 hours 26 minutes before

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In the hours before

Local storm report, Aug 9, 8:15 AM EDT, 2 hours 41 minutes before

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Local storm report, Aug 9, 8:33 AM EDT, 2 hours 23 minutes before

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Special weather statement, Aug 9, 10:56 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1056 AM EDT TUE AUG 9 2011

MIZ037>040-091600-
CLARE-LAKE-MASON-OSCEOLA-
1056 AM EDT TUE AUG 9 2011

...SIGNIFICANT WEATHER ADVISORY...

AT 1050 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
RAPIDLY DEVELOPING THUNDERSTORMS EXTENDING FROM FREESOIL TO
SOUTHEAST OF LUDINGTON...MOVING EAST AT 30 MPH.

PEA SIZE HAIL...WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
  ELK TWP...            SAUBLE TWP...         SWEETWATER TWP...
  IRONS...              LAKE TWP...           BALDWIN...
  NEWKIRK TWP...        IDLEWILD...           LUTHER...
  NIRVANA...            PINORA TWP...         BRISTOL...
  CHASE...              TUSTIN...             REED CITY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

&&

LAT...LON 4418 8639 4416 8508 4382 8509 4382 8643
      4397 8646 4404 8652
TIME...MOT...LOC 1455Z 280DEG 28KT 4410 8603

TJT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 12:04 AM EDT	Areal Flood Advisory	GRR	Kent, Montcalm	10 hr
Aug 9, 3:04 AM EDT	Special Weather Statement	GRR	Clinton	56 min
Aug 9, 3:21 AM EDT	Special Weather Statement	GRR	Ingham, Jackson	84 min
Aug 9, 4:31 AM EDT	Small Craft Advisory	GRR		45 hr
Aug 9, 5:10 AM EDT	Dense Fog Advisory	GRR	Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more	4 hr
Aug 9, 11:43 AM EDT	Special Weather Statement	GRR	Clare, Isabella, Lake, Mecosta, Newaygo, Osceola	2 hr
Aug 9, 1:10 PM EDT	Special Weather Statement	GRR	Clare, Isabella, Mecosta	95 min
Aug 9, 2:39 PM EDT	Special Weather Statement	GRR	Ingham	51 min
Aug 9, 3:06 PM EDT	Special Weather Statement	GRR	Kalamazoo	54 min
Aug 9, 4:13 PM EDT	Special Weather Statement	GRR	Jackson	32 min

Nearby

Special Weather Statements in Michigan, 2011 Every special weather statement in 2011

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.