Alert archive / Michigan / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 75, NWS Grand Rapids, MI

September 3, 20104 counties in Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 3, 2010, 12:25 AM EDT for 4 counties in Michigan. It was in force for 35 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
Sep 3, 2010, 12:25 AM EDT (04:25 UTC)
Expired
Sep 3, 2010, 1:00 AM EDT
In force
35 min
Issued by
NWS Grand Rapids, MI
Area
Storm-based polygon
Hail
0.0 in
Wind
60.0 mph

Counties Allegan County, MI, Ionia County, MI, Kent County, MI, Ottawa County, MI

The radar

The Grand Rapids radar (KGRR), 11 km from the middle of the area, began a volume at 04:27 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, 4.4 hours before the alert went out and 264 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2010-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 917 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2010-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
917 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1076 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.3

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 Sep 2, 11:55 PM EDT, 30 minutes earlier.

Area forecast discussion, Sep 2, 11:55 PM EDT, 30 minutes before
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Hazardous weather outlook, Sep 2, 9:10 PM EDT, 3 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
910 PM EDT THU SEP 2 2010

MIZ037>040-043>046-050>052-056>059-064>067-071>074-031045-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
910 PM EDT THU SEP 2 2010

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

.DAY ONE...TONIGHT

A LINE OF THUNDERSTORMS HEAD OF THE COLD FRONT WILL CROSS SOUTHWEST
LOWER MICHIGAN BETWEEN 11 PM THIS EVENING AND 2 AM THIS MORNING. A
FEW OF THOSE STORMS MAY BE SEVERE WEST OF ROUTE 131. DAMAGING WINDS
AND FREQUENT CLOUD TO GROUND LIGHTING ARE THE MOST LIKELY HAZARDS.
THE STRONGEST WINDS WILL LIKELY BE BY THE BEACHES ALONG THE SHORE
TO THE FIRST SET OF DUNES.

SOME OF THE RAIN TONIGHT MAY BE LOCALLY HEAVY.  RAINFALL RATES IN
EXCESS OF A HALF INCH PER HOUR ARE POSSIBLE IN ANY HEAVIER SHOWER OR
THUNDERSTORM. THE MAIN STORM MOTION WILL BE NORTHEAST AT
45 MPH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

WINDS WILL BE ON THE INCREASE FRIDAY. SOME GUSTS OVER 40 MPH MAY
OCCUR INTO SATURDAY. THIS WILL LIKELY RESULT IN SOME DAMAGE TO TREE
LIMBS AND ANY LOOSE ITEMS OUTSIDE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

LMZ844>849-031045-
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-
910 PM EDT THU SEP 2 2010

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

.DAY ONE...TONIGHT

WINDS AND WAVES WILL BECOME HAZARDOUS TO SMALL CRAFT TONIGHT.
A MODERATE TO HIGH RISK FOR RIP CURRENTS MAY DEVELOP TONIGHT.
IN ADDITION...THUNDERSTORMS WILL CROSS THE LAKE BETWEEN 10 PM AND
MIDNIGHT WITH GUSTY WINDS AND FREQUENT CLOUD TO WATER LIGHTNING
STRIKES PLUS NEAR ZERO VISIBILITY IN VERY HEAVY WIND DRIVEN RAIN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

GALE FORCE WINDS ARE PREDICTED FOR FRIDAY AFTERNOON INTO SATURDAY
AFTERNOON. THIS WILL BUILD THE WAVES TO OVER 6 FEET...RESULTING IN
HAZARDOUS CONDITIONS FOR SMALL CRAFT.

RIP CURRENTS ARE LIKELY FOR FRIDAY INTO SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

MJS MEADE WDM

In the hours before

Local storm report, Sep 2, 11:28 PM EDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1128 PM EDT THU SEP 02 2010

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

1058 PM     HEAVY RAIN       3 NNW HESPERIA          43.61N 86.06W
09/02/2010  M0.70 INCH       OCEANA             MI   PUBLIC

            THE SITE ACCUMULATED 0.50 INCHES IN 30 MINUTES.

&&

WH
Special weather statement, Sep 2, 11:28 PM EDT, 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1128 PM EDT THU SEP 2 2010

MIZ044-050-056-057-030430-
KENT-MUSKEGON-NEWAYGO-OTTAWA-
1128 PM EDT THU SEP 2 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 1124 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES SOUTHWEST OF
MUSKEGON TO 22 MILES SOUTH OF GRAND HAVEN TO 77 MILES SOUTHWEST OF
GRAND HAVEN...MOVING NORTHEAST AT 40 MPH.

WINDS GREATER THAN 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...ARE
POSSIBLE WITH THESE STORMS.

* THUNDERSTORMS WILL BE NEAR...
  MUSKEGON AND MUSKEGON ARPT BY 1135 PM EDT...
  AGNEW AND ROSABELLE BEACH BY 1140 PM EDT...
  SNUG HARBOR AND WEST OLIVE BY 1145 PM EDT...
  CLEAR LAKE BY 1155 PM EDT...
  DENNISON AND COOPERSVILLE BY MIDNIGHT EDT...
  CRISP BY 1205 AM EDT...
  BISHOP AND CANADA CORNERS BY 1210 AM EDT...

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 THESE STORMS HAVE PASSED.

&&

LAT...LON 4363 8556 4330 8557 4330 8552 4318 8553
      4277 8614 4278 8622 4305 8625 4325 8635
TIME...MOT...LOC 0328Z 236DEG 35KT 4317 8634 4279 8634
          4223 8715

JK
Local storm report, Sep 2, 11:32 PM EDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1132 PM EDT THU SEP 02 2010

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

0713 PM     HEAVY RAIN       3 NW WHITE CLOUD        43.60N 85.81W
09/02/2010  M1.50 INCH       NEWAYGO            MI   CO-OP OBSERVER

            THIS WAS A DAILY TOTAL RAINFALL.

&&

WH
Special weather statement, Sep 2, 11:32 PM EDT, 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1132 PM EDT THU SEP 2 2010

MIZ038>040-044-045-050-030430-
CLARE-LAKE-MECOSTA-MUSKEGON-NEWAYGO-OSCEOLA-
1132 PM EDT THU SEP 2 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 1128 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 9 MILES NORTH OF
REED CITY TO 17 MILES EAST OF REED CITY TO 53 MILES SOUTHWEST OF BIG
RAPIDS...MOVING NORTHEAST AT 40 MPH.

WINDS GREATER THAN 30 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...
BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.

* THUNDERSTORMS WILL BE NEAR...
  AVONDALE BY 1145 PM EDT...
  HIGHLAND AND INA BY 1150 PM EDT...
  BISHOP AND PARK LAKE BY 1155 PM EDT...
  HARRISON BY 1205 AM EDT...

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 THESE STORMS HAVE PASSED.

&&

LAT...LON 4417 8460 4409 8461 4320 8632 4321 8633
      4324 8635 4347 8611 4347 8604 4353 8604
      4368 8588 4403 8568 4418 8538
TIME...MOT...LOC 0332Z 235DEG 36KT 4403 8547 4383 8514
          4323 8626

JK
Local storm report, Sep 3, 12:12 AM EDT, 13 minutes before
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Local storm report, Sep 3, 12:15 AM EDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 8:54 PM EDTSpecial Marine WarningGRR96 min
Sep 2, 9:35 PM EDTSpecial Weather StatementGRRMason, Muskegon, Oceana55 min
Sep 2, 10:29 PM EDTSpecial Weather StatementGRRLake61 min
Sep 2, 11:25 PM EDTSpecial Marine WarningGRR45 min
Sep 2, 11:28 PM EDTSpecial Weather StatementGRROttawa62 min
Sep 2, 11:32 PM EDTSpecial Weather StatementGRRClare, Newaygo, Osceola58 min
Sep 2, 11:39 PM EDTSpecial Marine WarningGRR36 min
Sep 2, 11:55 PM EDTSevere Thunderstorm WarningGRRMuskegon, Ottawa35 min
Sep 3, 12:17 AM EDTSevere Thunderstorm WarningGRRKent, Montcalm, Ottawa28 min
Sep 3, 12:41 AM EDTSevere Thunderstorm WarningGRRBarry, Ionia, Kent, Mecosta, Montcalm34 min
Sep 3, 1:17 AM EDTSpecial Weather StatementGRRClinton, Eaton, Gratiot, Ingham, Ionia, Isabella and 1 more58 min
Sep 3, 2:22 AM EDTSpecial Weather StatementGRRIngham, Jackson53 min
Sep 3, 10:18 AM EDTWind AdvisoryGRRAllegan, Mason, Muskegon, Oceana, Ottawa, Van Buren18 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2010Every 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.