Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 2, NWS Green Bay, WI

April 9, 2011Florence County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Apr 9, 2011, 11:58 PM CDT for Florence County, Wisconsin. It was in force for 34 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 9, 2011, 11:58 PM CDT (04:58 UTC)
Expired: Apr 10, 2011, 12:32 AM CDT
In force: 34 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

County Florence County, WI

The radar

The Marquette radar (KMQT), 89 km from the middle of the area, began a volume at 04:58 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 00:00Z, 5.0 hours before the alert went out and 165 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: 581 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 114 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.

965 
WUUS53 KGRB 100458
SVRGRB
WIC037-100545-
/O.NEW.KGRB.SV.W.0002.110410T0458Z-110410T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
1158 PM CDT SAT APR 9 2011

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN FLORENCE COUNTY IN NORTHEAST WISCONSIN...

* UNTIL 1245 AM CDT

* AT 1157 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
  THIS STORM WAS LOCATED 11 MILES WEST OF TIPLER...OR 17 MILES
  SOUTHWEST OF IRON RIVER...AND MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  TIPLER AROUND 1215 AM CDT.
  FLORENCE AROUND 1245 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE LONG
LAKE...COMMONWEALTH AND SPREAD EAGLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. IF INDOORS...STAY AWAY FROM WINDOWS. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN GREEN BAY.

&&

LAT...LON 4599 8842 4600 8836 4597 8831 4597 8825
      4595 8823 4596 8818 4593 8810 4590 8810
      4588 8806 4581 8813 4581 8867 4601 8868
      4600 8862 4602 8860 4602 8851
TIME...MOT...LOC 0458Z 266DEG 33KT 4590 8884
WIND...HAIL <50MPH 1.50IN

$$

KIECKBUSCH

2 follow-up statements

125 
WWUS53 KGRB 100518
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1218 AM CDT SUN APR 10 2011

WIC037-100545-
/O.CON.KGRB.SV.W.0002.000000T0000Z-110410T0545Z/
FLORENCE WI-
1218 AM CDT SUN APR 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
FLORENCE COUNTY UNTIL 1245 AM CDT...

AT 1214 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR TIPLER...OR 17 MILES SOUTH OF IRON RIVER...
MOVING EAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  FLORENCE AROUND 1240 AM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE
COMMONWEALTH AND SPREAD EAGLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. IF INDOORS...STAY AWAY FROM WINDOWS. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING.

&&

LAT...LON 4599 8842 4600 8836 4597 8831 4597 8825
      4595 8823 4596 8818 4593 8810 4590 8810
      4588 8806 4581 8813 4581 8867 4601 8868
      4600 8862 4602 8860 4602 8851
TIME...MOT...LOC 0518Z 272DEG 41KT 4585 8858
WIND...HAIL <50MPH 1.00IN

$$

KIECKBUSCH

645 
WWUS53 KGRB 100532
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1232 AM CDT SUN APR 10 2011

WIC037-100543-
/O.CAN.KGRB.SV.W.0002.000000T0000Z-110410T0545Z/
FLORENCE WI-
1232 AM CDT SUN APR 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN FLORENCE COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4599 8842 4600 8836 4597 8831 4597 8825
      4595 8823 4596 8818 4593 8810 4590 8810
      4588 8806 4581 8813 4581 8867 4601 8868
      4600 8862 4602 8860 4602 8851
TIME...MOT...LOC 0533Z 272DEG 41KT 4584 8833

$$

KIECKBUSCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 7:09 PM CDT	Marine Dense Fog Advisory	GRB		15 hr
Apr 9, 9:25 PM CDT	Dense Fog Advisory	GRB	Door, Kewaunee, Manitowoc	6 hr
Apr 9, 11:36 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Oneida, Vilas	39 min
Apr 10, 3:13 AM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto, Outagamie, Shawano	30 min
Apr 10, 3:20 AM CDT	Special Marine Warning	GRB		34 min
Apr 10, 3:41 AM CDT	Small Craft Advisory	GRB		42 hr
Apr 10, 10:13 AM CDT	Marine Dense Fog Advisory	GRB		11 hr
Apr 10, 10:20 AM CDT	River Flood Warning	GRB	Wood	4 days
Apr 10, 10:36 AM CDT	River Flood Warning	GRB	Marathon	47 hr
Apr 10, 1:28 PM CDT	River Flood Warning	GRB	Shawano, Waupaca	4 days
Apr 10, 3:38 PM CDT	River Flood Warning	GRB	Marathon	65 hr
Apr 10, 4:10 PM CDT	River Flood Warning	GRB	Lincoln, Marathon	64 hr
Apr 10, 4:17 PM CDT	River Flood Warning	GRB	Wood	41 hr
Apr 10, 4:26 PM CDT	Severe Thunderstorm Warning	GRB	Kewaunee	19 min
Apr 10, 4:28 PM CDT	Special Marine Warning	GRB		45 min
Apr 10, 5:31 PM CDT	Tornado Warning	GRB	Lincoln, Marathon	44 min
Apr 10, 6:04 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waushara, Wood	56 min
Apr 10, 6:14 PM CDT	Tornado Warning	GRB	Langlade, Lincoln, Marathon, Shawano	46 min
Apr 10, 6:31 PM CDT	Tornado Warning	GRB	Waushara	29 min
Apr 10, 6:40 PM CDT	Tornado Warning	GRB	Langlade, Lincoln	50 min
Apr 10, 6:58 PM CDT	Tornado Warning	GRB	Waupaca, Waushara, Winnebago	32 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

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.