Alert archive / Michigan / Special Weather Statements in 2011

Special Weather Statement, NWS Grand Rapids, MI

May 29, 2011Allegan County, Van Buren County, Michigan

NWS Grand Rapids, MI issued this special weather statement at May 29, 2011, 1:39 PM EDT for Allegan County, Van Buren County, Michigan. It was in force for 51 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: May 29, 2011, 1:39 PM EDT (17:39 UTC)
Expired: May 29, 2011, 2:30 PM EDT
In force: 51 min
Issued by: NWS Grand Rapids, MI

Counties Allegan County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 60 km from the middle of the area, began a volume at 17:39 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, 5.7 hours before the alert went out and 213 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: 12 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

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 May 29, 1:20 PM EDT, 19 minutes earlier.

Area forecast discussion, May 29, 1:20 PM EDT, 19 minutes before

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Hazardous weather outlook, May 29, 12:10 PM EDT, 1 hour 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1210 PM EDT SUN MAY 29 2011

MIZ037>040-043>046-050>052-056>059-064>067-071>074-300915-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
1210 PM EDT SUN MAY 29 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS...SOME SEVERE...ARE EXPECTED THIS AFTERNOON AND
EVENING...MAINLY BETWEEN 1 PM AND 8 PM EDT...AND PARTICULARLY IN THE
3 TO 6 PM TIMEFRAME.

THE BEST THREAT AREA FOR SEVERE WEATHER DURING THIS TIME IS SOUTH OF
INTERSTATE 96. THE PRIMARY SEVERE THREAT IS DAMAGING WIND GUSTS...
HOWEVER HAIL OF UP TO AN INCH IN DIAMETER AND EVEN A TORNADO ARE NOT
OUT OF THE QUESTION. STORM MOTION WILL BE EAST AT 45 MPH.

LOCALLY HEAVY RAIN ASSOCIATED WITH A WARM FRONT COMBINED WITH
SATURATED GROUND COULD LEAD TO AREAS OF FLOODING THIS EVENING INTO
THE OVERNIGHT HOURS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A COLD FRONT COULD BRING A LINE OF SEVERE STORMS ON TUESDAY
AFTERNOON OR EVENING. THE MAIN THREATS WILL BE STRONG WINDS AND
LARGE HAIL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE REQUIRED THIS AFTERNOON OR EVENING.

LMZ844>849-300915-
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-
1210 PM EDT SUN MAY 29 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

A LINE OF STRONG TO SEVERE THUNDERSTORMS IS EXPECTED TO CROSS
SOUTHERN LAKE MICHIGAN THIS AFTERNOON...PARTICULARLY IN THE NOON TO
3 PM EDT TIMEFRAME. THE MAIN CONCERN WITH THESE STORMS IS WIND GUSTS
OVER 60 MPH AS THEY MOVE EAST AT 45 MPH...HOWEVER HAIL UP TO ONE
INCH IN DIAMETER AND EVEN A WATERSPOUT CANNOT BE RULED.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
DENSE FOG CAN BE EXPECTED INTO TUESDAY. A COLD FRONT COULD BRING A
LINE OF SEVERE STORMS ON TUESDAY AFTERNOON OR EVENING. THE MAIN
THREATS WILL BE STRONG WINDS AND LARGE HAIL.

OSTUNO TJT

In the hours before

Special weather statement, May 29, 12:55 PM EDT, 44 minutes before

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Special weather statement, May 29, 1:39 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
May 28, 9:38 PM EDT	River Flood Advisory	GRR	Jackson	61 hr
May 29, 11:12 AM EDT	Flood Watch	GRR	Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 6 more	11 hr
May 29, 1:21 PM EDT	Special Marine Warning	GRR		84 min
May 29, 2:25 PM EDT	Special Weather Statement	GRR	Allegan, Ottawa, Van Buren	80 min
May 29, 2:38 PM EDT	Flash Flood Warning	GRR	Allegan, Van Buren	5 hr
May 29, 2:44 PM EDT	Special Marine Warning	GRR		72 min
May 29, 3:14 PM EDT	Special Weather Statement	GRR	Allegan, Barry, Calhoun, Ionia, Kalamazoo, Van Buren	61 min
May 29, 3:27 PM EDT	Areal Flood Advisory	GRR	Barry, Calhoun, Eaton, Ingham, Jackson, Kalamazoo	12 hr
May 29, 3:58 PM EDT	Tornado Warning	GRR	Kalamazoo	47 min
May 29, 4:08 PM EDT	Severe Thunderstorm Warning	GRR	Barry	52 min
May 29, 4:16 PM EDT	Tornado Warning	GRR	Kalamazoo	31 min
May 29, 4:25 PM EDT	Tornado Warning	GRR	Barry, Calhoun	35 min
May 29, 4:47 PM EDT	Tornado Warning	GRR	Eaton	28 min
May 29, 4:54 PM EDT	Tornado Warning	GRR	Ingham, Jackson	51 min
May 29, 5:01 PM EDT	Areal Flood Advisory	GRR	Clinton	12 hr
May 29, 5:50 PM EDT	Flash Flood Warning	GRR	Clinton, Eaton, Ingham, Ionia	6 hr
May 29, 7:55 PM EDT	River Flood Warning	GRR	Kent	5 days

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.