Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 19, NWS Green Bay, WI

May 27, 1991Florence County, Forest County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at May 27, 1991, 8:11 PM CDT for Florence County, Forest County, Wisconsin. It was in force for 64 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 27, 1991, 8:11 PM CDT (01:11 UTC)
Expired: May 27, 1991, 9:15 PM CDT
In force: 64 min
Issued by: NWS Green Bay, WI
Area: Whole counties

Counties Florence County, WI, Forest County, WI

What was reported inside it

Time	Report	Where	Remark
May 27, 8:35 PM CDT	Thunderstorm Wind 0	Forest, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.2 hours before the alert went out and 147 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: 1164 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1342 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 6.5

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, May 27, 7:44 PM CDT, 27 minutes before

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Special weather statement, May 27, 7:49 PM CDT, 22 minutes before

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The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 10:21 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	39 min
May 28, 1:07 PM CDT	Severe Thunderstorm Warning	GRB	Shawano, Waupaca	68 min
May 28, 1:07 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto	68 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca	14 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Menominee	14 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Marinette, Oconto	54 min
May 28, 2:06 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie, Shawano	54 min
May 28, 3:04 PM CDT	Tornado Warning	GRB	Brown	31 min
May 28, 3:04 PM CDT	Tornado Warning	GRB	Door	31 min
May 28, 3:04 PM CDT	Tornado Warning	GRB	Kewaunee	56 min
May 28, 3:37 PM CDT	Tornado Warning	GRB	Kewaunee	38 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1991 Every severe thunderstorm warning in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.