Alert archive / Michigan / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 119, NWS Grand Rapids, MI

October 18, 2007Eaton County, Ingham County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Oct 18, 2007, 11:35 PM EDT for Eaton County, Ingham County, Michigan. It was in force for 40 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: Oct 18, 2007, 11:35 PM EDT (03:35 UTC)
Expired: Oct 19, 2007, 12:15 AM EDT
In force: 40 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon

Counties Eaton County, MI, Ingham County, MI

The radar

The Grand Rapids radar (KGRR), 84 km from the middle of the area, began a volume at 03:36 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
Oct 18, 4:23 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 3.6 hours before the alert went out and 97 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: 504 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1038 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 354 m²/s²
0-3 km storm-relative helicity: 339 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 4.4

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 Oct 18, 11:35 PM EDT, 0 minutes earlier.

Area forecast discussion, Oct 18, 11:35 PM EDT, 0 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Oct 18, 12:41 PM EDT, 10 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1241 PM EDT THU OCT 18 2007

MIZ037>040-043>046-050>052-056>059-064>067-071>074-190945-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHPM-VAN BUREN-KALPMAZOO-CALHOUN-JACKSON-
1241 PM EDT THU OCT 18 2007

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

.DAY ONE...TODAY AND TONIGHT

AN ORGANIZED LINE OF THUNDERSTORMS IS EXPECTED TO DEVELOP OVER
ILLINOIS AND INDIANA BY THE MID TO LATE AFTERNOON HOURS.  THIS
COMPLEX OF STORMS WILL MOVE NORTHEAST INTO LOWER MICHIGAN EARLY THIS
EVENING.  SEVERE THUNDERSTORMS WILL BE POSSIBLE FROM ROUGHLY 6 PM
THIS EVENING UNTIL 1 PM FRIDAY MORNING. DPMAGING WINDS IN EXCESS OF
60 MPH WILL BE THE MAIN THREAT...HOWEVER THERE IS ALSO A RISK OF
TORNADOES.  THE HIGHEST POTENTIAL FOR SEVERE STORMS WILL BE SOUTH OF
A MUSKEGON TO BIG RAPIDS TO MT. PLEASANT LINE...ALTHOUGH SEVERE
STORMS ARE ALSO POSSIBLE NORTH OF THIS LINE.

SOUTH WINDS OF 30 TO 40 MPH ARE ALSO EXPECTED THIS AFTERNOON WITH
WIND GUSTS TO 50 MPH POSSIBLE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING.

LMZ844>849-190945-
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-
1241 PM EDT THU OCT 18 2007

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

.DAY ONE...TODAY AND TONIGHT

AN ORGANIZED LINE OF THUNDERSTORMS IS EXPECTED TO DEVELOP OVER
ILLINOIS AND INDIANA BY THE MID TO LATE AFTERNOON HOURS.  THIS
COMPLEX OF STORMS WILL MOVE NORTHEAST INTO LOWER MICHIGAN THIS
EVENING.  SEVERE THUNDERSTORMS WILL BE POSSIBLE FROM ROUGHLY 6 PM
THIS EVENING UNTIL 1 PM FRIDAY MORNING. DPMAGING WINDS IN EXCESS OF
60 MPH WILL BE THE MAIN THREAT...HOWEVER THERE IS ALSO A RISK OF
TORNADIC WATERSPOUTS.

SOUTHERLY WINDS OF AROUND 30 KNOTS CAN BE EXPECTED THIS AFTERNOON
AND TONIGHT. WAVES OF 4 TO 7 FEET ARE EXPECTED. THIS WILL CREATE A
HAZARD TO SMALL CRAFT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SOUTHWEST WINDS TO 30 KNOTS WILL CONTINUE DURING THE DAY ON
FRIDAY...BEFORE DIMINISHING TO WEST 10 TO 20 KNOTS LATE ON FRIDAY
NIGHT. WAVES OF 5 TO 8 FEET CAN BE EXPECTED ON FRIDAY BEFORE
SUBSIDING TO 3 TO 6 FEET LATE FRIDAY NIGHT. THESE CONDITIONS WILL
CONTINUE TO POSE A HAZARD TO SMALL CRAFT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING.

NJJ/JK

In the hours before

Local storm report, Oct 18, 10:00 PM EDT, 1 hour 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1000 PM EDT THU OCT 18 2007

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

0929 PM     LIGHTNING        GRAND LEDGE             42.75N 84.75W
10/18/2007                   EATON              MI   LAW ENFORCEMENT

            POWER LINE DOWN FROM LIGHTNING STRIKE.

&&

BMARINO

Local storm report, Oct 18, 10:04 PM EDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1004 PM EDT THU OCT 18 2007

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

0929 PM     TSTM WND GST     PORTAGE                 42.20N 85.59W
10/18/2007  M55 MPH          KALAMAZOO          MI   AMATEUR RADIO

            WIND GUSTS TO 55 MPH AND HALF INCH HAIL REPORTED.

&&

BMARINO

Local storm report, Oct 18, 10:24 PM EDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1024 PM EDT THU OCT 18 2007

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

0853 PM     TSTM WND DMG     2 W MORLEY              43.49N 85.49W
10/18/2007                   MECOSTA            MI   LAW ENFORCEMENT

            NUMEROUS TREES REPORTED DOWN AT 220TH AND 1 MILE ROAD

&&

BMARINO

Special weather statement, Oct 18, 10:27 PM EDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1027 PM EDT THU OCT 18 2007

MIZ040-046-190300-
CLARE-ISABELLA-
1027 PM EDT THU OCT 18 2007

...SPECIAL WEATHER STATEMENT...

AT 1022 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 10 MILES SOUTHWEST OF MOUNT PLEASANT...MOVING
NORTHEAST AT 50 MPH.

FUNNEL CLOUDS...PEA SIZE HAIL...WINDS UP TO 50 MPH...OCCASIONAL CLOUD
TO GROUND LIGHTNING AND BRIEF MODERATE DOWNPOURS ARE POSSIBLE WITH
THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...MOUNT PLEASANT...SHEPHERD...
ROSEBUSH...DELWIN AND LOOMIS

GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS
TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS
PASSED.

LAT...LON 4354 8506 4397 8462 4369 8462 4349 8463
      4348 8484 4347 8484 4347 8499
TIME...MOT...LOC 0227Z 230DEG 45KT 4354 8487

LAURENS

Local storm report, Oct 18, 10:35 PM EDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1035 PM EDT THU OCT 18 2007

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

0910 PM     TSTM WND GST     3 E GRAND JUNCTION      42.40N 86.01W
10/18/2007  M68 MPH          VAN BUREN          MI   TRAINED SPOTTER

            WIND GUSTS TO 68 MPH BLEW DOWN A FEW TREE BRANCHES. THERE
            WAS ALSO HALF INCH HAIL.

&&

BMARINO

Local storm report, Oct 18, 11:19 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1119 PM EDT THU OCT 18 2007

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

1031 PM     TORNADO          2 SSE WILLIAMSTON       42.66N 84.27W
10/18/2007                   INGHAM             MI   EMERGENCY MNGR

            POSSIBLE TORNADO TOUCHED DOWN ON INTERSTATE 96 NEAR MILE
            MARKER 116 OVERTURNED A SIMI WITH PEOPLE TRAPPED AROUND
            1031 PM. IT THEM MOVED NORTH NORTHEAST INTO WILLIAMSTON
            BEFORE LIFTING. PLYMOUTH LANDING SUBDIVISION HAD SEVERAL
            HOMES DAMAGED. THE TORNADO LIFTED AROUND 1034 PM.

&&

BMARINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 18, 8:01 PM EDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	14 min
Oct 18, 8:01 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo, Van Buren	21 min
Oct 18, 8:18 PM EDT	Severe Thunderstorm Warning	GRR	Kent, Muskegon, Ottawa	42 min
Oct 18, 8:19 PM EDT	Special Weather Statement	GRR	Newaygo	56 min
Oct 18, 8:28 PM EDT	Special Marine Warning	GRR		62 min
Oct 18, 8:30 PM EDT	Special Weather Statement	GRR	Gratiot	30 min
Oct 18, 8:41 PM EDT	Special Weather Statement	GRR	Mecosta, Montcalm, Newaygo	64 min
Oct 18, 8:45 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Ottawa	45 min
Oct 18, 8:48 PM EDT	Tornado Warning	GRR	Eaton, Ingham	27 min
Oct 18, 8:54 PM EDT	Severe Thunderstorm Warning	GRR	Montcalm	51 min
Oct 18, 8:56 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo, Van Buren	49 min
Oct 18, 8:58 PM EDT	Severe Thunderstorm Warning	GRR	Allegan	27 min
Oct 18, 9:00 PM EDT	Severe Thunderstorm Warning	GRR	Kent	15 min
Oct 18, 9:02 PM EDT	Severe Thunderstorm Warning	GRR	Isabella, Mecosta	33 min
Oct 18, 9:09 PM EDT	Severe Thunderstorm Warning	GRR	Kent, Muskegon, Ottawa	51 min
Oct 18, 9:16 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Kalamazoo, Van Buren	44 min
Oct 18, 9:20 PM EDT	Severe Thunderstorm Warning	GRR	Clare, Gratiot, Isabella, Montcalm	55 min
Oct 18, 9:37 PM EDT	Severe Thunderstorm Warning	GRR	Kent, Ottawa	38 min
Oct 18, 9:39 PM EDT	Severe Thunderstorm Warning	GRR	Kent, Montcalm	42 min
Oct 18, 9:59 PM EDT	Tornado Warning	GRR	Kalamazoo	31 min
Oct 18, 10:04 PM EDT	Tornado Warning	GRR	Calhoun, Eaton, Ingham, Jackson	26 min
Oct 18, 10:25 PM EDT	Tornado Warning	GRR	Calhoun	35 min
Oct 18, 10:27 PM EDT	Special Weather Statement	GRR	Isabella	33 min
Oct 18, 10:29 PM EDT	Tornado Warning	GRR	Ingham	16 min
Oct 18, 10:36 PM EDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	24 min
Oct 18, 10:45 PM EDT	Tornado Warning	GRR	Ingham	15 min
Oct 18, 11:04 PM EDT	Severe Thunderstorm Warning	GRR	Eaton	21 min
Oct 18, 11:09 PM EDT	Tornado Warning	GRR	Calhoun	36 min
Oct 18, 11:25 PM EDT	Tornado Warning	GRR	Calhoun	38 min
Oct 18, 11:52 PM EDT	Tornado Warning	GRR	Ingham, Jackson	23 min
Oct 19, 12:07 AM EDT	Severe Thunderstorm Warning	GRR	Ingham	38 min
Oct 19, 12:20 AM EDT	Tornado Warning	GRR	Ingham	25 min
Oct 19, 4:38 AM EDT	Wind Advisory	GRR	Allegan, Mason, Muskegon, Oceana, Ottawa, Van Buren	15 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2007 Every severe thunderstorm warning in 2007

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.