Alert archive / Michigan / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 15, NWS Grand Rapids, MI

April 25, 20084 counties in Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 25, 2008, 2:11 PM EDT for 4 counties in Michigan. It was in force for 34 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: Apr 25, 2008, 2:11 PM EDT (18:11 UTC)
Expired: Apr 25, 2008, 2:45 PM EDT
In force: 34 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon

Counties Allegan County, MI, Barry County, MI, Ionia County, MI, Kent County, MI

The radar

The Grand Rapids radar (KGRR), 15 km from the middle of the area, began a volume at 18:13 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 12:00Z, 6.2 hours before the alert went out and 285 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: 806 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 240 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 Apr 25, 12:55 PM EDT, 1 hour 16 minutes earlier.

Area forecast discussion, Apr 25, 12:55 PM EDT, 1 hour 16 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, Apr 25, 11:57 AM EDT, 2 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1157 AM EDT FRI APR 25 2008

MIZ037>040-043>046-050>052-056>059-064>067-071>074-260830-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
1157 AM EDT FRI APR 25 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS MAY REDEVELOP THIS AFTERNOON AS VERY WARM
AND UNSTABLE CONDITIONS DEVELOP... BUT THUNDERSTORMS WILL BE MORE
LIKELY TONIGHT WHEN A STRONG COLD FRONT SWEEPS THROUGH THE AREA.
SEVERE WEATHER WITH DAMAGING WINDS AND LARGE HAIL IS POSSIBLE THIS
AFTERNOON AND TONIGHT. STORM MOVEMENT WILL BE NORTHEAST AT 40 MPH.
THE MAIN TIME FRAME FOR SEVERE WEATHER IS FROM 8 PM TO 2 AM.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ACCUMULATING WET SNOW IS POSSIBLE LATE SUNDAY NIGHT INTO MONDAY AND
MONDAY NIGHT. FREEZING TEMPERATURES ARE POSSIBLE MONDAY...
TUESDAY... AND WEDNESDAY NIGHTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT.

LMZ844>849-260830-
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-
1157 AM EDT FRI APR 25 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

INCREASING SOUTHERLY WINDS WILL BRING CONDITIONS HAZARDOUS TO SMALL
CRAFT... PARTICULARLY TONIGHT. GALE FORCE SOUTHWEST WINDS MAY
DEVELOP LATE TONIGHT.

SCATTERED THUNDERSTORM ACTIVITY IS POSSIBLE THIS AFTERNOON.
THUNDERSTORMS ARE LIKELY TONIGHT WHEN A STRONG COLD FRONT SWEEPS
THROUGH THE AREA. SEVERE WEATHER WITH DAMAGING WINDS AND LARGE HAIL
WILL BE POSSIBLE. STORM MOVEMENT WILL BE NORTHEAST AT 40 MPH.
LIGHTNING COULD BE FREQUENT.

A VERY WARM AND MOIST AIR MASS MOVING ACROSS THE LAKE COULD RESULT
IN AREAS OF FOG THIS AFTERNOON AND THIS EVENING. SOME OF THE FOG
COULD BE DENSE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

GALE FORCE WINDS ARE POSSIBLE SATURDAY... PARTICULARLY NORTH OF
MUSKEGON. STRONG WINDS AND LARGE WAVES ARE ALSO LIKELY SUNDAY NIGHT
THROUGH MONDAY. WINDS COULD REACH GALE FORCE DURING THIS TIME.

WET SNOW IS POSSIBLE LATE SUNDAY NIGHT INTO MONDAY AND MONDAY
NIGHT.  FREEZING TEMPERATURES ARE POSSIBLE MONDAY... TUESDAY... AND
WEDNESDAY NIGHTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT.

MEADE

In the hours before

Special weather statement, Apr 25, 8:51 AM EDT, 5 hours 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
851 AM EDT FRI APR 25 2008

MIZ040-046-251315-
CLARE-ISABELLA-
851 AM EDT FRI APR 25 2008

...SPECIAL WEATHER STATEMENT...

AT 848 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST
OF ROSEBUSH TO 11 MILES SOUTHWEST OF MOUNT PLEASANT...MOVING EAST AT
40 MPH.

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

LOCATIONS IMPACTED INCLUDE...
  SHEPHERD...

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

LAT...LON 4347 8498 4348 8499 4394 8464 4394 8460
      4390 8459 4348 8460
TIME...MOT...LOC 1251Z 270DEG 35KT 4386 8456 4347 8486

MJS

Special weather statement, Apr 25, 1:33 PM EDT, 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
133 PM EDT FRI APR 25 2008

MIZ037-038-043-044-050-056-251830-
LAKE-MASON-MUSKEGON-NEWAYGO-OCEANA-OTTAWA-
133 PM EDT FRI APR 25 2008

...SPECIAL WEATHER STATEMENT...

AT 127 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES NORTHWEST
OF LUDINGTON TO 32 MILES WEST OF GRAND HAVEN...MOVING NORTHEAST AT 40
MPH.

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

LOCATIONS IMPACTED INCLUDE...
  STONY LAKE...         LUDINGTON...          MEARS...
  WEARE...              WABANINGO...          SCOTTVILLE...
  HART...               WHITEHALL...          ROTHBURY...
  NEW ERA...            MONTAGUE...           FREESOIL...
  CUSTER...             FOUNTAIN...           ELBRIDGE...

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

LAT...LON 4380 8644 4396 8647 4407 8654 4419 8638
      4418 8557 4409 8556 4334 8574 4329 8580
      4316 8587 4301 8626 4315 8630 4337 8645
      4352 8649 4361 8656 4368 8656
TIME...MOT...LOC 1733Z 245DEG 40KT 4408 8652 4293 8673

MJS

Special weather statement, Apr 25, 2:02 PM EDT, 9 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>

Local storm report, Apr 25, 2:07 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
207 PM EDT FRI APR 25 2008

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

0207 PM     HAIL             WAYLAND                 42.67N 85.64W
04/25/2008  E1.00 INCH       ALLEGAN            MI   FIRE DEPT/RESCUE

&&

RSUTTLE

Local storm report, Apr 25, 2:08 PM EDT, 3 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 5:15 AM EDT	Special Weather Statement	GRR	Muskegon, Oceana	60 min
Apr 25, 6:15 AM EDT	Special Weather Statement	GRR	Muskegon, Oceana	60 min
Apr 25, 7:16 AM EDT	Special Weather Statement	GRR	Mecosta, Newaygo	59 min
Apr 25, 8:04 AM EDT	Special Weather Statement	GRR	Clare, Isabella, Mecosta	56 min
Apr 25, 8:51 AM EDT	Special Weather Statement	GRR	Isabella	24 min
Apr 25, 1:33 PM EDT	Special Weather Statement	GRR	Lake, Mason, Muskegon, Newaygo, Oceana, Ottawa	57 min
Apr 25, 2:02 PM EDT	Special Weather Statement	GRR	Ionia, Kent, Lake, Mecosta, Montcalm, Newaygo and 2 more	73 min
Apr 25, 2:58 PM EDT	Special Weather Statement	GRR	Gratiot, Ionia, Isabella, Montcalm	62 min
Apr 25, 3:21 PM EDT	Severe Thunderstorm Warning	GRR	Clinton, Gratiot	24 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.