Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 3, NWS Green Bay, WI

April 15, 2003Shawano County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Apr 15, 2003, 2:31 PM CDT for Shawano County, Wisconsin. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 15, 2003, 2:31 PM CDT (19:31 UTC)
Expired: Apr 15, 2003, 3:30 PM CDT
In force: 59 min
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text

County Shawano County, WI

The radar

The Green Bay radar (KGRB), 67 km from the middle of the area, began a volume at 19:34 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.5 hours before the alert went out and 69 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: 46 J/kg
Mixed-layer CIN: -629 J/kg
Mixed-layer LCL: 1745 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

422 
WUUS53 KGRB 151931
SVRGRB
WIC115-152030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
229 PM CDT TUE APR 15 2003

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SHAWANO COUNTY IN WISCONSIN

* UNTIL 330 PM CDT

* AT 229 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  A CLUSTER OF SEVERE THUNDERSTORMS WITH HAIL UP TO 1 INCH IN 
  DIAMETER. THE STORMS WERE IN A WEST TO EAST LINE OVER SHAWANO 
  COUNTY.  THE STORMS WERE MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORM INCLUDE...
  TILLEDA BY 300 PM CDT.
  LEOPOLIS BY 305 PM CDT.
  LYNDHURST BY 310 PM CDT.
  GRESHAM BY 315 PM CDT.
  RED RIVER BY 325 PM CDT.

IF YOU ARE IN THE WARNED AREA...PREPARE FOR HAIL AND DEADLY
LIGHTNING. SEEK SHELTER IMMEDIATELY.

LAT...LON 4484 8917 4468 8900 4471 8850 4482 8850

$$

HELMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 9:43 PM CDT	Severe Thunderstorm Warning	GRB	Vilas	47 min
Apr 14, 10:23 PM CDT	Severe Thunderstorm Warning	GRB	Vilas	67 min
Apr 15, 2:46 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	59 min
Apr 15, 2:47 PM CDT	Severe Thunderstorm Warning	GRB	Door, Kewaunee	43 min
Apr 15, 3:03 PM CDT	Special Marine Warning	GRB		72 min
Apr 15, 3:03 PM CDT	Special Marine Warning	GRB		72 min
Apr 15, 3:48 PM CDT	Severe Thunderstorm Warning	GRB	Door, Kewaunee	27 min
Apr 15, 4:44 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie, Shawano	61 min
Apr 15, 4:46 PM CDT	Special Marine Warning	GRB		59 min
Apr 15, 4:56 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	34 min
Apr 15, 5:13 PM CDT	Severe Thunderstorm Warning	GRB	Kewaunee	62 min
Apr 15, 5:30 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Portage, Waupaca	60 min
Apr 15, 5:35 PM CDT	Special Marine Warning	GRB		85 min
Apr 15, 5:35 PM CDT	Special Marine Warning	GRB		85 min
Apr 15, 5:35 PM CDT	Special Marine Warning	GRB		85 min
Apr 15, 5:46 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Portage, Waupaca	44 min
Apr 15, 5:57 PM CDT	Severe Thunderstorm Warning	GRB	Shawano	63 min
Apr 15, 6:03 PM CDT	Severe Thunderstorm Warning	GRB	Marathon	42 min
Apr 15, 6:29 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Waupaca	46 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2003 Every severe thunderstorm warning in 2003

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.