Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 4, NWS Green Bay, WI
NWS Green Bay, WI issued this severe thunderstorm warning at Apr 10, 2011, 4:26 PM CDT for Kewaunee County, Wisconsin. It was in force for 19 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 10, 2011, 4:26 PM CDT (21:26 UTC)
- Expired
- Apr 10, 2011, 4:45 PM CDT
- In force
- 19 min
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Kewaunee County, WI
The radar
The Green Bay radar (KGRB), 40 km from the middle of the area, began a volume at 21:26 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 |
|---|---|---|---|
| Apr 10, 4:32 PM CDT | HAIL 1 | 2 Sw Kewaunee, WI | COVERING THE GROUND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 10, 3:19 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.4 hours before the alert went out and 38 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.
- Mixed-layer CAPE
- 56 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 799 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
474
WUUS53 KGRB 102126
SVRGRB
WIC061-102145-
/O.NEW.KGRB.SV.W.0004.110410T2126Z-110410T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
426 PM CDT SUN APR 10 2011
THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN KEWAUNEE COUNTY IN NORTHEAST WISCONSIN...
* UNTIL 445 PM CDT
* AT 421 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED 9 MILES SOUTHWEST OF KEWAUNEE...AND MOVING
NORTHEAST AT 50 MPH.
* THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF SOUTHERN
KEWAUNEE COUNTY...INCLUDING THE FOLLOWING LOCATIONS ROSTOK AND
ALASKA.
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.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4446 8776 4455 8747 4433 8753 4433 8759
4433 8766
TIME...MOT...LOC 2126Z 242DEG 52KT 4443 8757
WIND...HAIL <50MPH 1.00IN
$$
KALLAS2 follow-up statements
304 WWUS53 KGRB 102132 SVSGRB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 432 PM CDT SUN APR 10 2011 WIC061-102145- /O.CON.KGRB.SV.W.0004.000000T0000Z-110410T2145Z/ KEWAUNEE WI- 432 PM CDT SUN APR 10 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN KEWAUNEE COUNTY UNTIL 445 PM CDT... AT 430 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR KEWAUNEE...MOVING NORTHEAST AT 55 MPH. THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN KEWAUNEE COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL. IF INDOORS...STAY AWAY FROM WINDOWS. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4449 8764 4455 8747 4433 8753 TIME...MOT...LOC 2132Z 242DEG 56KT 4448 8744 WIND...HAIL <50MPH 1.75IN $$ KALLAS
291 WWUS53 KGRB 102139 SVSGRB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 439 PM CDT SUN APR 10 2011 WIC061-102147- /O.EXP.KGRB.SV.W.0004.000000T0000Z-110410T2145Z/ KEWAUNEE WI- 439 PM CDT SUN APR 10 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KEWAUNEE COUNTY WILL EXPIRE AT 445 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT INTO LAKE MICHIGAN. 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 4449 8764 4455 8747 4433 8753 TIME...MOT...LOC 2137Z 242DEG 56KT 4452 8734 $$ KALLAS
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 9, 11:58 PM CDT | Severe Thunderstorm Warning | GRB | Florence | 34 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, 4:28 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, 2011Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.