Alert archive / Michigan / Special Weather Statements in 2011

Special Weather Statement, NWS Grand Rapids, MI

April 4, 2011Isabella County, Mecosta County, Michigan

NWS Grand Rapids, MI issued this special weather statement at Apr 4, 2011, 3:47 AM EDT for Isabella County, Mecosta County, Michigan. It was in force for 58 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: Apr 4, 2011, 3:47 AM EDT (07:47 UTC)
Expired: Apr 4, 2011, 4:45 AM EDT
In force: 58 min
Issued by: NWS Grand Rapids, MI

Counties Isabella County, MI, Mecosta County, MI

The radar

The Grand Rapids radar (KGRR), 89 km from the middle of the area, began a volume at 07:47 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 00:00Z, 7.8 hours before the alert went out and 183 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: 921 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 1052 m²/s²
0-3 km storm-relative helicity: 1742 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Apr 4, 2:00 AM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Apr 4, 2:00 AM EDT, 1 hour 47 minutes before

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Hazardous weather outlook, Apr 3, 11:31 AM EDT, 16 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1131 AM EDT SUN APR 3 2011

MIZ037>040-043>046-050>052-056>059-064>067-071>074-040915-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
1131 AM EDT SUN APR 3 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS TONIGHT COULD PRODUCE SOME HAIL AND HEAVY RAIN.
SEVERE STORMS ARE POSSIBLE MAINLY SOUTH OF A MUSKEGON TO ALMA LINE
WITH LARGE HAIL BEING THE MAIN THREAT THIS EVENING INTO TONIGHT.
ISOLATED DAMAGING WIND GUSTS ARE POSSIBLE ACROSS EXTREME SOUTHERN
LOWER MICHIGAN TONIGHT...MAINLY ALONG AND SOUTH OF INTERSTATE 94.

STORM MOTION WILL BE TO THE EAST NORTHEAST AT 55 TO 60 MPH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING INTO TONIGHT.

LMZ844>849-040915-
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-
1131 AM EDT SUN APR 3 2011

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

.DAY ONE...TODAY AND TONIGHT

WAVES OVER 4 FEET AND WINDS GUSTING TO 30 KNOTS WILL BE HAZARDOUS
TO SMALL CRAFT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

WAVES OVER 4 FEET AND WINDS GUSTING TO 30 KNOTS WILL BE HAZARDOUS
TO SMALL CRAFT MONDAY AND TUESDAY.

OSTUNO JK

In the hours before

Local storm report, Apr 4, 12:30 AM EDT, 3 hours 17 minutes before

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Special weather statement, Apr 4, 1:39 AM EDT, 2 hours 8 minutes before

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Local storm report, Apr 4, 2:51 AM EDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
251 AM EDT MON APR 04 2011

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

0250 AM     HAIL             3 NW WHITE CLOUD        43.60N 85.81W
04/04/2011  E0.25 INCH       NEWAYGO            MI   TRAINED SPOTTER

&&

NJJ

Special weather statement, Apr 4, 2:51 AM EDT, 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
251 AM EDT MON APR 4 2011

MIZ043-044-050-056>058-064-040745-
ALLEGAN-IONIA-KENT-MUSKEGON-NEWAYGO-OCEANA-OTTAWA-
251 AM EDT MON APR 4 2011

...SIGNIFICANT WEATHER ADVISORY...

AT 245 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 15 MILES WEST OF
MUSKEGON TO 10 MILES WEST OF GRAND RAPIDS...MOVING NORTHEAST AT
60 MPH.

PENNY SIZE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...AND HEAVY
DOWNPOURS ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
  CHESTER TWP...        DUCK LAKE STATE PARK...
  MONTAGUE...           RAVENNA...            WHITEHALL...
  WALKER...             GRAND RAPIDS...       NEW ERA...
  ROTHBURY...           DALTON...             CASNOVIA...
  LAKEWOOD CLUB...      WOLF LAKE...          ALPINE...
  COMSTOCK PARK...

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 4368 8640 4344 8556 4330 8556 4330 8532
      4313 8531 4313 8528 4277 8579 4310 8627
      4348 8648
TIME...MOT...LOC 0649Z 243DEG 53KT 4322 8640 4313 8594
          4288 8576

OSTUNO

Local storm report, Apr 4, 2:59 AM EDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
259 AM EDT MON APR 04 2011

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

0235 AM     HAIL             MOUNT PLEASANT          43.60N 84.77W
04/04/2011  E0.25 INCH       ISABELLA           MI   TRAINED SPOTTER

&&

NJJ

Special weather statement, Apr 4, 3:47 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
347 AM EDT MON APR 4 2011

MIZ044>046-040845-
ISABELLA-MECOSTA-NEWAYGO-
347 AM EDT MON APR 4 2011

...SIGNIFICANT WEATHER ADVISORY...

AT 343 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 25 MILES WEST OF BIG
RAPIDS TO 5 MILES NORTH OF MOUNT PLEASANT...MOVING NORTHEAST AT 60
MPH.

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

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 4381 8551 4380 8461 4351 8465 4347 8553
      4362 8584
TIME...MOT...LOC 0747Z 238DEG 53KT 4367 8591 4352 8537
          4370 8472

OSTUNO

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 10:47 PM EDT	Special Weather Statement	GRR	Newaygo	58 min
Apr 3, 11:11 PM EDT	Special Weather Statement	GRR	Clare, Isabella, Lake, Mason, Mecosta, Montcalm and 4 more	64 min
Apr 4, 12:02 AM EDT	Special Weather Statement	GRR	Clare, Clinton, Gratiot, Ionia, Isabella, Kent and 8 more	58 min
Apr 4, 1:39 AM EDT	Special Weather Statement	GRR	Lake, Mason, Mecosta, Muskegon, Newaygo, Oceana and 1 more	66 min
Apr 4, 2:51 AM EDT	Special Weather Statement	GRR	Kent, Muskegon	54 min
Apr 4, 6:07 AM EDT	Special Weather Statement	GRR	Jackson	53 min
Apr 4, 11:12 AM EDT	River Flood Advisory	GRR	Isabella	5 days
Apr 4, 11:41 AM EDT	Areal Flood Advisory	GRR	Mecosta	6 hr
Apr 4, 5:14 PM EDT	Areal Flood Warning	GRR	Mecosta	21 hr
Apr 4, 5:44 PM EDT	River Flood Warning	GRR	Isabella	27 hr
Apr 4, 5:53 PM EDT	River Flood Advisory	GRR	Osceola	66 hr
Apr 4, 5:53 PM EDT	River Flood Advisory	GRR	Newaygo	66 hr
Apr 4, 5:53 PM EDT	River Flood Advisory	GRR	Mecosta	27 hr

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.