Alert archive / Michigan / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 4, NWS Grand Rapids, MI

April 13, 1994Clinton County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 13, 1994, 1:10 AM EDT for Clinton County, Michigan. It was in force for 35 min.

The area

The counties it named.

The facts

Issued: Apr 13, 1994, 1:10 AM EDT (05:10 UTC)
Expired: Apr 13, 1994, 1:45 AM EDT
In force: 35 min
Issued by: NWS Grand Rapids, MI
Area: Whole counties

County Clinton County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 00:00Z, 5.2 hours before the alert went out and 99 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: 510 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 368 m²/s²
0-3 km storm-relative helicity: 373 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, 11:06 PM EDT, 2 hours 4 minutes before

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Special weather statement, Apr 12, 11:23 PM EDT, 1 hour 47 minutes before

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Special weather statement, Apr 12, 11:51 PM EDT, 1 hour 19 minutes before

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Special weather statement, Apr 13, 12:35 AM EDT, 35 minutes before

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Special weather statement, Apr 13, 12:47 AM EDT, 23 minutes before

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Special weather statement, Apr 13, 12:50 AM EDT, 20 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, 8:48 PM EDT	Severe Thunderstorm Warning	GRR	Branch	27 min
Apr 12, 9:15 PM EDT	Severe Thunderstorm Warning	GRR	Branch	45 min
Apr 12, 10:19 PM EDT	Severe Thunderstorm Warning	GRR	Branch, Hillsdale	33 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1994 Every severe thunderstorm warning in 1994

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.