Alert archive / Michigan / Special Weather Statements in 2012

Special Weather Statement, NWS Grand Rapids, MI

July 27, 2012Clinton County, Michigan

NWS Grand Rapids, MI issued this special weather statement at Jul 27, 2012, 4:06 PM EDT for Clinton County, Michigan. It was in force for 54 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 27, 2012, 4:06 PM EDT (20:06 UTC)
Expired: Jul 27, 2012, 5:00 PM EDT
In force: 54 min
Issued by: NWS Grand Rapids, MI

County Clinton County, MI

The radar

The Grand Rapids radar (KGRR), 82 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

Detroit, MI (KDTX), launched 12:00Z, 8.1 hours before the alert went out and 92 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: 542 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 553 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

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 Jul 27, 4:06 PM EDT, 0 minutes earlier.

Area forecast discussion, Jul 27, 4:06 PM EDT, 0 minutes before

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Hazardous weather outlook, Jul 27, 11:59 AM EDT, 4 hours 7 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1159 AM EDT FRI JUL 27 2012

MIZ037>040-043>046-050>052-056>059-064>067-071>074-280830-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
1159 AM EDT FRI JUL 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. ALL
STORMS WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL AND CLOUD
TO GROUND LIGHTNING STRIKES. THE STRONGER STORMS MAY PRODUCE HAIL UP
TO AROUND DIME SIZE AND GUSTY WINDS TO AROUND 50 MPH. STORM MOVEMENT
WILL BE TO THE EAST AT 20 MPH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A LOW CHANCE OF THUNDERSTORMS EXISTS EACH DAY MONDAY THROUGH
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY... BUT PLEASE REPORT
HAIL SIZE AND WIND GUST SPEEDS IF IMPACTED BY A STRONGER STORM.

LMZ844>849-280830-
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI-
WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI-
1159 AM EDT FRI JUL 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. ALL
STORMS WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL AND CLOUD
TO WATER LIGHTNING STRIKES. THE STRONGER STORMS MAY PRODUCE HAIL UP
TO AROUND DIME SIZE AND GUSTY WINDS TO AROUND 40 KNOTS. STORM
MOVEMENT WILL BE TO THE EAST AT 20 MPH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

WINDS AND WAVES HAZARDOUS TO SMALL CRAFT AND BEACH GOERS COULD
DEVELOP SOUTH OF GRAND HAVEN ON SATURDAY... FROM MID AFTERNOON
THROUGH EARLY EVENING. WINDS WILL BE FROM THE NORTH.

A LOW CHANCE OF THUNDERSTORMS EXISTS EACH DAY MONDAY THROUGH
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY... BUT PLEASE REPORT
HAIL SIZE AND WIND GUST SPEEDS IF IMPACTED BY A STRONGER STORM.

MEADE/DUKE

In the hours before

Local storm report, Jul 27, 2:47 PM EDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
247 PM EDT FRI JUL 27 2012

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

0247 PM     HAIL             1 E ALMA                43.38N 84.64W
07/27/2012  E1.00 INCH       GRATIOT            MI   TRAINED SPOTTER

&&

MWALTON

Local storm report, Jul 27, 2:54 PM EDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
254 PM EDT FRI JUL 27 2012

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

0250 PM     HAIL             EDMORE                  43.41N 85.04W
07/27/2012  M1.00 INCH       MONTCALM           MI   TRAINED SPOTTER

&&

MWALTON

Special weather statement, Jul 27, 3:09 PM EDT, 57 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
309 PM EDT FRI JUL 27 2012

MIZ057-058-272015-
IONIA-KENT-
309 PM EDT FRI JUL 27 2012

...SIGNIFICANT WEATHER ADVISORY...

AT 305 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LOWELL...MOVING EAST AT 25 MPH.

NICKEL SIZE HAIL...WIND GUSTS TO 50 MPH...FREQUENT CLOUD TO
GROUND LIGHTNING...TORRENTIAL DOWNPOURS ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
  SARANAC...            LAKE ODESSA...        CLARKSVILLE...
  ORLEANS...            BERLIN CENTER...      BERLIN CENTER...
  IONIA...              MUIR...               LYONS...
  HUBBARDSTON...        PORTLAND...           PEWAMO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS 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 4277 8484 4277 8489 4287 8551 4310 8546
      4310 8483
TIME...MOT...LOC 1908Z 281DEG 21KT 4298 8527

DUKE

Local storm report, Jul 27, 3:20 PM EDT, 46 minutes before

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Local storm report, Jul 27, 3:45 PM EDT, 21 minutes before

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Special weather statement, Jul 27, 4:06 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 1:03 PM EDT	Special Weather Statement	GRR	Ottawa	57 min
Jul 27, 1:26 PM EDT	Special Weather Statement	GRR	Lake	64 min
Jul 27, 2:06 PM EDT	Special Weather Statement	GRR	Clare, Clinton, Gratiot, Ionia, Isabella, Kent and 9 more	54 min
Jul 27, 2:20 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot	55 min
Jul 27, 2:21 PM EDT	Severe Thunderstorm Warning	GRR	Montcalm	54 min
Jul 27, 2:53 PM EDT	Special Marine Warning	GRR		82 min
Jul 27, 3:09 PM EDT	Special Weather Statement	GRR	Ionia	66 min
Jul 27, 3:15 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot	30 min

Nearby

Special Weather Statements in Michigan, 2012 Every special weather statement in 2012

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.