Alert archive / Michigan / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 107, NWS Grand Rapids, MI

June 14, 2004Jackson County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 14, 2004, 2:44 PM EDT for Jackson County, Michigan. It was in force for 46 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 14, 2004, 2:44 PM EDT (18:44 UTC)
Expired
Jun 14, 2004, 3:30 PM EDT
In force
46 min
Issued by
NWS Grand Rapids, MI
Area
Counties, with a storm outline in the text

County Jackson County, MI

The radar

The Detroit radar (KDTX), 93 km from the middle of the area, began a volume at 18:45 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.

IssuedProductOfficeLasted
Jun 14, 10:40 AM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.7 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-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 2004-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 338 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, Detroit, MI at 12:00Z on 2004-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.19395878Sfc1 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
338 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1019 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
83 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 14, 10:20 AM EDT, 4 hours 24 minutes earlier.

Area forecast discussion, Jun 14, 10:20 AM EDT, 4 hours 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1020 AM EDT MON JUN 14 2004

.UPDATE...
IMPRESSIVE SPEED MAX SEEN APPROACHING FROM THE WEST ON WATER VAPOR
IMAGERY AND IN 12Z RAOB DATA. 500 MB WND SPD AT MINNEAPOLIS THIS
MORNING WAS 65 KTS AND WILL BE TRANSLATING EAST INTO WRN LWR MI THIS
AFTERNOON.

LWR MI IS VIRTUALLY CLOUD FREE ATTM AND DEVELOPING SLY FLOW AHEAD IF
APPROACHING DISTURBANCE IS SENDING 70 DEGREE DEW POINTS BACK NORTH
FROM INDIANA. CAPES HAVE ALREADY CLIMBED OVER 1500 J/KG AND LIFTED
INDICES ARE NEAR -6. LATEST RUC HAS LIFTED INDICES TO -9 BY 21Z.

SVR THREAT INITIALLY APPEARS TO BE ACROSS THE SRN CWFA FROM
CONVECTION MOVING EAST FROM SRN WI/NRN IL...BUT SUSPECT ALL OF THE
AREA WILL HAVE A SEVERE THREAT ONCE THE SHORTWAVE SWEEPS IN AFTER
18Z. WOULD EXPECT CONVECTION TO DEVELOP FARTHER NORTH FROM WHERE IT
CURRENTLY IS CONSIDERING THE BUILDING INSTABILITY AND APPROACHING
UPPER DYNAMICS. MAIN THREAT IS DAMAGING WIND GUSTS.

GOING FCST OF SHOWERS AND TSTMS LIKELY LOOKS FINE AND LITTLE CHANGE
NEEDED.

&&

.GRR...NONE.

&&

MEADE
Hazardous weather outlook, Jun 14, 11:43 AM EDT, 3 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1143 AM EDT MON JUN 14 2004

MIZ037>040-043>046-050>052-056>059-064>067-071>074-150834-
ALLEGAN-BARRY-CALHOUN-CLARE-CLINTON-EATON-GRATIOT-INGHAM-IONIA-
ISABELLA-JACKSON-KALAMAZOO-KENT-LAKE-MASON-MECOSTA-MONTCALM-MUSKEGON-
NEWAYGO-OCEANA-OSCEOLA-OTTAWA-VAN BUREN-
1143 AM EDT MON JUN 14 2004

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

.DAY ONE...TODAY AND TONIGHT

A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL RACE RAPIDLY EAST AT
40 TO 50 MPH ACROSS SOUTHERN LOWER MICHIGAN...SOUTH OF INTERSTATE
96...BETWEEN NOON AND 3 PM. THIS LINE OF STORMS WILL BE CAPABLE OF
PRODUCING WIND GUSTS OF UP TO 75 MPH. WINDS OF THIS MAGNITUDE CAN
CAUSE WIDESPREAD TREE AND POWER LINE DAMAGE. SOME CITIES IN THE PATH
OF THIS LINE OF STORMS INCLUDE KALAMAZOO...BATTLE CREEK...ALBION AND
JACKSON.

OTHER SCATTERED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS
AFTERNOON AND EARLY EVENING ACROSS SOUTHWEST MICHIGAN... ASIDE FROM
THE AFOREMENTIONED LINE OF STORMS. HAIL UP TO THE SIZE OF GOLF BALLS
ARE ALSO POSSIBLE IN ADDITION TO DAMAGING WINDS. THE STORM THREAT
SHOULD COME TO AN END BY 9 PM THIS EVENING.

THE SEVERE WEATHER IS THE RESULT OF A STRONG UPPER LEVEL DISTURBANCE
MOVING EAST FROM WISCONSIN.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A SLIGHT RISK OF SEVERE THUNDERSTORMS EXISTS ACROSS ALL OF SOUTHWEST
LOWER MICHIGAN ON WEDNESDAY AS A COLD FRONT TRACKS THROUGH THE
REGION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND EVENING.
SPOTTER ACTIVATION MAY BE REQUIRED FOR WEDNESDAY

MJS MEADE

In the hours before

Local storm report, Jun 14, 1:49 PM EDT, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
149 PM EDT MON JUN 14 2004

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

0137 PM     HAIL             2 ESE HASTINGS          42.64N 85.25W
06/14/2004  1.75 INCH        BARRY              MI   BROADCAST MEDIA

            MOSTLY HALF INCH HAIL. A FEW GOLF BALL SIZE.

0142 PM     TSTM WND GST     ST. JOHNS               43.00N 84.56W
06/14/2004  60 MPH           CLINTON            MI   TRAINED SPOTTER

0142 PM     HAIL             6 E MAPLE RAPIDS        43.11N 84.57W
06/14/2004  1.00 INCH        CLINTON            MI   TRAINED SPOTTER

&&

MJK
Local storm report, Jun 14, 1:51 PM EDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
151 PM EDT MON JUN 14 2004

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

0125 PM     HAIL             PORTLAND                40.43N 84.98W
06/14/2004  1.00 INCH        JAY                IN   TRAINED SPOTTER

&&

MJK
Local storm report, Jun 14, 1:55 PM EDT, 49 minutes before
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Local storm report, Jun 14, 1:58 PM EDT, 46 minutes before
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Local storm report, Jun 14, 2:04 PM EDT, 40 minutes before
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Local storm report, Jun 14, 2:27 PM EDT, 17 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 11:13 AM EDTSpecial Marine WarningGRR92 min
Jun 14, 11:13 AM EDTSpecial Marine WarningGRR92 min
Jun 14, 12:36 PM EDTSevere Thunderstorm WarningGRRVan Buren39 min
Jun 14, 12:48 PM EDTSevere Thunderstorm WarningGRRIonia, Montcalm42 min
Jun 14, 1:06 PM EDTSevere Thunderstorm WarningGRRKalamazoo39 min
Jun 14, 1:10 PM EDTSevere Thunderstorm WarningGRRClinton, Gratiot50 min
Jun 14, 1:19 PM EDTSevere Thunderstorm WarningGRRBarry, Eaton56 min
Jun 14, 1:51 PM EDTSpecial Marine WarningGRR39 min
Jun 14, 1:51 PM EDTSpecial Marine WarningGRR39 min
Jun 14, 1:53 PM EDTSevere Thunderstorm WarningGRRIngham52 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2004Every severe thunderstorm warning in 2004

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.