Alert archive / Michigan / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 43, NWS Grand Rapids, MI

June 7, 2008Allegan County, Ottawa County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 7, 2008, 8:16 PM EDT for Allegan County, Ottawa County, Michigan. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 7, 2008, 8:16 PM EDT (00:16 UTC)
Expired: Jun 7, 2008, 9:00 PM EDT
In force: 44 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon

Counties Allegan County, MI, Ottawa County, MI

The radar

The Grand Rapids radar (KGRR), 43 km from the middle of the area, began a volume at 00:17 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 7, 6:42 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 0.3 hours before the alert went out and 214 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: 1399 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 7, 4:26 PM EDT, 3 hours 50 minutes earlier.

Area forecast discussion, Jun 7, 4:26 PM EDT, 3 hours 50 minutes before

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Hazardous weather outlook, Jun 7, 4:30 PM EDT, 3 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
430 PM EDT SAT JUN 7 2008

MIZ037>040-043>046-050>052-056>059-064>067-071>074-081015-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
430 PM EDT SAT JUN 7 2008

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

.DAY ONE...TONIGHT

THUNDERSTORMS IN WISCONSIN ARE LIKELY TO MOVE INTO WESTERN MICHIGAN
BETWEEN 7 AND 9 PM.  DAMAGING WINDS IN EXCESS OF 60 MPH APPEAR TO BE
THE MAIN THREAT.  IN ADDITION FREQUENT LIGHTNING LARGE HAIL AND
LOCALLY VERY HEAVY RAINFALL ARE ALSO POSSIBILITIES.  THE MAIN STORM
MOTION WILL BE EAST SOUTHEAST AT 50 MPH.

RAINFALL RATES COULD TOP AN INCH PER HOUR WITH THESE THUNDERSTORMS.
IF THE STORMS PERSIST...THE RAINFALL COULD BECOME EXCESSIVE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

AS A FRONTAL SYSTEM SLOWLY MOVES SOUTH OF THE REGION THERE WILL BE
A SERIES OF SURFACE WAVES MOVING ALONG IT. THAT WILL BRING PERIODS
OF SHOWERS AND THUNDERSTORM TO THE REGION INTO TUESDAY. SEVERE
THUNDERSTORMS ARE POSSIBLE SUNDAY THROUGH TUESDAY DURING THE LATE
AFTERNOON AND EVENING HOURS OF EACH DAY.

RAINFALL FOR SUNDAY THROUGH MONDAY IS EXPECTED TO BE HEAVY IN PLACES.
THE GROUND IS BECOMING INCREASINGLY SATURATED SO THE RUNOFF WILL
BECOME MORE EFFICIENT.  THEREFORE THE POTENTIAL FOR FLOODING WILL
NEED TO BE MONITORED CLOSELY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THIS EVENING AND POSSIBLE FOR SUNDAY
INTO TUESDAY.

LMZ844>849-081015-
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-
430 PM EDT SAT JUN 7 2008

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

.DAY ONE...TONIGHT

A LINE OF THUNDERSTORMS WILL LIKELY CROSS LAKE MICHIGAN EARLY THIS
AFTERNOON AND EVENING.   GUSTY WINDS WINDS OVER 35 KNOTS...INCREASED
WAVE HEIGHTS AND CLOUD TO WATER LIGHTNING ARE THE
EXPECTED HAZARDS.

PATCHY DENSE FOG WILL RESULT IN SOME HAZARDOUS BOATING CONDITIONS
INTO TONIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

ADDITIONAL THUNDERSTORMS ARE EXPECTED SUNDAY THROUGH TUESDAY.
GUSTY WINDS...INCREASED WAVE HEIGHTS AND HAIL REMAIN THE PRIMARY
HAZARDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE EACH AFTERNOON AND EVENING
THROUGH TUESDAY.

WDM MJS

In the hours before

Special weather statement, Jun 7, 6:39 PM EDT, 1 hour 37 minutes before

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Special weather statement, Jun 7, 7:41 PM EDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
741 PM EDT SAT JUN 7 2008

MIZ043-050-056-057-064-065-071-072-080045-
ALLEGAN-BARRY-KALAMAZOO-KENT-MUSKEGON-OCEANA-OTTAWA-VAN BUREN-
741 PM EDT SAT JUN 7 2008

...SPECIAL WEATHER STATEMENT...

AT 737 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 35 MILES WEST OF
WHITEHALL TO SOUTH HAVEN...MOVING EAST AT 31 MPH.

* LOCATIONS IN THE PATH OF THESE STORMS INCLUDE...

  COVERT...             VAN BUREN ST PARK...  SOUTH HAVEN...
  KIBBIE...             BANGOR...             GLENN...
  LACOTA...             BREEDSVILLE...        GRAND JUNCTION...
  GANGES...             OVAL BEACH...         DOUGLAS...
  PULLMAN...            SAUGATUCK...
  SAUGATUCK STATE PARK...                     FENNVILLE...
  BLOOMINGDALE...       CASTLE PARK...

THESE STORMS ARE CAPABLE OF PRODUCING ONE HALF INCH DIAMETER HAIL...
WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND
HEAVY DOWNPOURS. 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 THESE STORMS HAVE
PASSED.

LAT...LON 4358 8629 4247 8538 4229 8626 4237 8633
      4250 8627 4269 8623 4295 8624 4315 8630
      4340 8646 4354 8649
TIME...MOT...LOC 2341Z 254DEG 27KT 4334 8700 4239 8620

JK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 8:09 PM EDT	Special Marine Warning	GRR		81 min
Jun 7, 8:28 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Ionia, Kent	35 min
Jun 7, 9:00 PM EDT	Severe Thunderstorm Warning	GRR	Ottawa	60 min
Jun 7, 9:24 PM EDT	Severe Thunderstorm Warning	GRR	Allegan	81 min
Jun 7, 9:30 PM EDT	Special Marine Warning	GRR		90 min
Jun 7, 9:39 PM EDT	Special Marine Warning	GRR		96 min
Jun 7, 9:48 PM EDT	Special Weather Statement	GRR	Barry, Clinton, Eaton, Gratiot, Ingham, Ionia and 2 more	87 min
Jun 7, 9:58 PM EDT	Flash Flood Warning	GRR	Allegan, Barry, Eaton, Ionia, Kent, Ottawa	6 hr
Jun 7, 10:14 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Eaton, Ionia, Kent	46 min
Jun 7, 10:43 PM EDT	Severe Thunderstorm Warning	GRR	Eaton, Ingham	62 min
Jun 7, 10:57 PM EDT	Areal Flood Advisory	GRR	Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more	203 days
Jun 7, 10:57 PM EDT	Severe Thunderstorm Warning	GRR	Clinton	18 min
Jun 7, 11:21 PM EDT	Special Marine Warning	GRR		90 min
Jun 7, 11:47 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo, Van Buren	47 min
Jun 8, 1:23 AM EDT	Special Weather Statement	GRR	Kent	67 min
Jun 8, 1:35 AM EDT	Special Weather Statement	GRR	Eaton, Ingham	55 min
Jun 8, 3:27 AM EDT	Flood Watch	GRR	Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more	48 hr
Jun 8, 4:01 AM EDT	Areal Flood Warning	GRR	Allegan, Barry, Eaton, Ionia, Kent, Ottawa	56 hr
Jun 8, 9:29 AM EDT	Special Weather Statement	GRR	Ottawa	61 min
Jun 8, 10:33 AM EDT	River Flood Warning	GRR	Barry	5 days
Jun 8, 11:50 AM EDT	Special Weather Statement	GRR	Lake, Mason	55 min
Jun 8, 12:23 PM EDT	Special Marine Warning	GRR		2 hr
Jun 8, 1:04 PM EDT	Special Marine Warning	GRR		86 min
Jun 8, 1:06 PM EDT	Special Weather Statement	GRR	Lake, Mason, Mecosta, Newaygo, Oceana, Osceola	54 min
Jun 8, 1:12 PM EDT	Severe Thunderstorm Warning	GRR	Mason, Oceana	48 min
Jun 8, 1:26 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Kent, Muskegon, Newaygo, Oceana, Ottawa and 1 more	64 min
Jun 8, 1:38 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Mason, Mecosta, Newaygo, Oceana, Osceola	52 min
Jun 8, 1:52 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Van Buren	38 min
Jun 8, 2:16 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Barry, Clare, Gratiot, Ionia, Isabella and 7 more	74 min
Jun 8, 2:27 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Barry, Calhoun, Eaton, Kalamazoo, Van Buren	78 min
Jun 8, 2:30 PM EDT	Tornado Warning	GRR	Clare, Osceola	38 min
Jun 8, 2:34 PM EDT	Tornado Warning	GRR	Osceola	13 min
Jun 8, 3:16 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Clinton, Eaton, Gratiot, Ingham, Ionia and 2 more	59 min
Jun 8, 3:34 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Calhoun, Eaton, Ingham, Jackson, Kalamazoo	71 min
Jun 8, 4:01 PM EDT	Tornado Warning	GRR	Clinton, Eaton, Ingham	25 min
Jun 8, 4:45 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	30 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2008 Every severe thunderstorm warning in 2008

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.