Alert archive / Michigan / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 20, NWS Grand Rapids, MI

April 12, 1996Ionia County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 12, 1996, 6:58 PM EDT for Ionia County, Michigan. It was in force for 32 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 12, 1996, 6:58 PM EDT (22:58 UTC)
Expired: Apr 12, 1996, 7:30 PM EDT
In force: 32 min
Issued by: NWS Grand Rapids, MI
Area: Whole counties

County Ionia County, MI

The radar

The Grand Rapids radar (KGRR), 39 km from the middle of the area, began a volume at 23:02 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 12:00Z, 11.0 hours before the alert went out and 136 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: 1032 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Apr 12, 1:06 PM EDT, 5 hours 52 minutes before

MIZ064>067-071>074-077>081-121905-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
104 PM EDT FRI APR 12 1996

...TORNADO WATCH IN EFFECT UNTIL 700 PM EDT FOR PORTIONS OF SOUTHERN
LOWER MICHIGAN...

A TORNADO WATCH HAS BEEN ISSUED FOR BRANCH... CALHOUN... EATON...
HILLSDALE... INGHAM... JACKSON... ALLEGAN... BARRY... BERRIEN...
CASS... KALAMAZOO... ST. JOSEPH... AND VAN BUREN COUNTIES IN SOUTHERN
LOWER MICHIGAN... EFFECTIVE UTIL 700 PM EDT.  SOME COMMUNITIES IN THIS
WATCH INCLUDE BENTON HARBOR... SOUTH HAVEN... BATTLE CREEK...
LANSING... EATON RAPIDS... HASTINGS...  AND HOLLAND.

AT 100 PM... WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
STRONG TO SEVERE THUNDERSTORMS REACHED FROM HOUGHTON LAKE SOUTHWEST TO
CHICAGO. MOVEMENT WAS EAST AT 30 MPH. THESE STORMS WILL CONTINUE TO
EFFECT PORTIONS OF WEST CENTRAL THEN SOUTHWEST LOWER MICHIGAN THROUGH
300 PM.

DURING A TORNADO WATCH... BE READY TO MOVE TO A SHELTER BELOW
GROUND... OR TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR...
IF A WARNING IS ISSUED OR IF A TORNADO IS SIGHTED.

DCZ

Special weather statement, Apr 12, 2:17 PM EDT, 4 hours 41 minutes before

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Special weather statement, Apr 12, 4:33 PM EDT, 2 hours 25 minutes before

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Special weather statement, Apr 12, 4:42 PM EDT, 2 hours 16 minutes before

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Special weather statement, Apr 12, 4:44 PM EDT, 2 hours 14 minutes before

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Special weather statement, Apr 12, 6:52 PM EDT, 6 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 9:06 AM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Newaygo, Oceana	69 min
Apr 12, 12:25 PM EDT	Severe Thunderstorm Warning	GRR	Mason, Oceana	50 min
Apr 12, 1:11 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Newaygo, Oceana	64 min
Apr 12, 1:34 PM EDT	Severe Thunderstorm Warning	GRR	Berrien	41 min
Apr 12, 1:53 PM EDT	Severe Thunderstorm Warning	GRR	Cass, Van Buren	67 min
Apr 12, 2:25 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo, Saint Joseph	50 min
Apr 12, 2:43 PM EDT	Severe Thunderstorm Warning	GRR	Clinton	32 min
Apr 12, 2:57 PM EDT	Severe Thunderstorm Warning	GRR	Branch	63 min
Apr 12, 3:21 PM EDT	Severe Thunderstorm Warning	GRR	Hillsdale	69 min
Apr 12, 5:03 PM EDT	Severe Thunderstorm Warning	GRR	Ottawa	42 min
Apr 12, 5:48 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Ottawa	42 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1996 Every severe thunderstorm warning in 1996

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.