Alert archive / Michigan / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 35, NWS Grand Rapids, MI

June 27, 20104 counties in Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 27, 2010, 7:30 AM EDT for 4 counties in Michigan. It was in force for 45 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 27, 2010, 7:30 AM EDT (11:30 UTC)
Expired: Jun 27, 2010, 8:15 AM EDT
In force: 45 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Allegan County, MI, Kent County, MI, Muskegon County, MI, Ottawa County, MI

The radar

The Grand Rapids radar (KGRR), 34 km from the middle of the area, began a volume at 11:31 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 11.5 hours before the alert went out and 242 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 766 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 241 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 27, 3:00 AM EDT, 4 hours 30 minutes earlier.

Area forecast discussion, Jun 27, 3:00 AM EDT, 4 hours 30 minutes before

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Hazardous weather outlook, Jun 27, 6:12 AM EDT, 1 hour 18 minutes before

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In the hours before

Special weather statement, Jun 27, 5:03 AM EDT, 2 hours 27 minutes before

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Special weather statement, Jun 27, 6:43 AM EDT, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
643 AM EDT SUN JUN 27 2010

MIZ043>046-050-051-056>058-064-065-271145-
ALLEGAN-BARRY-IONIA-ISABELLA-KENT-MECOSTA-MONTCALM-MUSKEGON-NEWAYGO-
OCEANA-OTTAWA-
643 AM EDT SUN JUN 27 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 642 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 18 MILES NORTHWEST
OF NEWAYGO TO 54 MILES WEST OF SAUGATUCK...MOVING EAST AT 40 MPH.

PEA SIZE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...BRIEF HEAVY
DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
  WOODLAND PARK...      LAKEWOOD CLUB...      BROHMAN...
  DALTON...             TWIN LAKE...          REEMAN...
  BRUNSWICK...          HOLTON...             WOODVILLE...
  FREMONT...            WHITE CLOUD...        ROOSEVELT PARK...
  MUSKEGON...           GOODWELL TWP...       NORTON SHORES...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A
STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.

&&

LAT...LON 4372 8599 4371 8487 4280 8534 4263 8604
      4264 8624 4270 8622 4305 8625 4341 8645
TIME...MOT...LOC 1044Z 276DEG 35KT 4365 8594 4278 8722

WDM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 5:03 AM EDT	Special Weather Statement	GRR	Kent, Lake, Mason, Mecosta, Montcalm, Newaygo and 2 more	57 min
Jun 27, 6:43 AM EDT	Special Weather Statement	GRR	Kent, Mecosta, Montcalm, Muskegon, Newaygo, Ottawa	62 min
Jun 27, 7:24 AM EDT	Special Marine Warning	GRR		36 min
Jun 27, 8:16 AM EDT	Special Weather Statement	GRR	Barry, Gratiot, Ionia, Kent, Montcalm	59 min
Jun 27, 8:58 AM EDT	Special Weather Statement	GRR	Clinton, Gratiot, Ingham	62 min
Jun 27, 11:02 AM EDT	River Flood Advisory	GRR	Jackson	11 hr
Jun 27, 11:47 AM EDT	Special Marine Warning	GRR		43 min
Jun 27, 12:32 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Van Buren	43 min
Jun 27, 12:41 PM EDT	Tornado Warning	GRR	Van Buren	34 min
Jun 27, 12:50 PM EDT	Special Weather Statement	GRR	Eaton	40 min
Jun 27, 12:57 PM EDT	Special Weather Statement	GRR	Kalamazoo	33 min
Jun 27, 1:03 PM EDT	Tornado Warning	GRR	Van Buren	27 min
Jun 27, 1:14 PM EDT	Tornado Warning	GRR	Allegan, Kalamazoo, Van Buren	18 min
Jun 27, 1:23 PM EDT	Severe Thunderstorm Warning	GRR	Eaton, Ingham, Jackson	56 min
Jun 27, 1:30 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	30 min
Jun 27, 1:35 PM EDT	Special Weather Statement	GRR	Barry, Eaton	40 min
Jun 27, 2:11 PM EDT	Special Weather Statement	GRR	Kent	49 min
Jun 27, 2:35 PM EDT	Areal Flood Advisory	GRR	Clare, Clinton, Gratiot, Ionia, Isabella, Kent and 9 more	6 hr
Jun 27, 2:43 PM EDT	Special Weather Statement	GRR	Gratiot	62 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2010 Every severe thunderstorm warning in 2010

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.