Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 29, NWS Green Bay, WI

July 18, 1996Marathon County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 18, 1996, 3:35 PM CDT for Marathon County, Wisconsin. It was in force for 55 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: Jul 18, 1996, 3:35 PM CDT (20:35 UTC)
Expired: Jul 18, 1996, 4:30 PM CDT
In force: 55 min
Issued by: NWS Green Bay, WI
Area: Whole counties

County Marathon County, WI

The radar

The Green Bay radar (KGRB), 138 km from the middle of the area, began a volume at 20:36 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.

What was reported inside it

Time	Report	Where	Remark
Jul 18, 4:00 PM CDT	Hail 0.75	Stratford, 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.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.6 hours before the alert went out and 139 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: 74 J/kg
Mixed-layer CIN: -283 J/kg
Mixed-layer LCL: 548 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGRB 182035
SVRGRB
WIC073-182130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
335 PM CDT THU JUL 18 1996

THE NATIONAL WEATHER SERVICE IN GREEN BAY WI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN CENTRAL WISCONSIN

   ...MARATHON COUNTY
 
AT 335 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A SEVERE
THUNDERSTORM ENTERING WESTERN MARATHON COUNTY NEAR COLBY AND UNITY.
THE STORM WAS MOVING EAST AT 35 MPH AND WILL AFFECT STRATFORD...FENWOOD
AND EDGAR BETWEEN 345 AND 415 PM.

STRONG WINDS AND HAIL ARE LIKELY WITH THIS STORM.
 
REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES.  IF YOU
ARE IN THE PATH OF THIS STORM...GO TO A PLACE OF SAFETY NOW.

J K LAST/BRUSKY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 9:35 AM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon	55 min
Jul 18, 4:00 PM CDT	Tornado Warning	GRB	Marathon	30 min
Jul 18, 4:25 PM CDT	Severe Thunderstorm Warning	GRB	Portage	50 min
Jul 18, 4:32 PM CDT	Tornado Warning	GRB	Portage	48 min
Jul 18, 5:06 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	64 min
Jul 18, 5:21 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	64 min
Jul 18, 5:38 PM CDT	Tornado Warning	GRB	Langlade, Lincoln	47 min
Jul 18, 5:45 PM CDT	Tornado Warning	GRB	Waupaca	45 min
Jul 18, 6:02 PM CDT	Tornado Warning	GRB	Outagamie, Winnebago	48 min
Jul 18, 6:29 PM CDT	Tornado Warning	GRB	Calumet	46 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.