Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 37, NWS Green Bay, WI

May 22, 2011Door County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at May 22, 2011, 6:00 PM CDT for Door County, Wisconsin. It was in force for 46 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: May 22, 2011, 6:00 PM CDT (23:00 UTC)
Expired: May 22, 2011, 6:46 PM CDT
In force: 46 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Door County, WI

The radar

The Green Bay radar (KGRB), 107 km from the middle of the area, began a volume at 23:02 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
May 22, 6:30 PM CDT	TSTM WND DMG	Fish Creek, WI	DELAYED REPORT. SMOKING POWER POLE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 30 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 22, 2:04 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.0 hours before the alert went out and 108 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: 351 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 1006 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

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

443 
WUUS53 KGRB 222300
SVRGRB
WIC029-230000-
/O.NEW.KGRB.SV.W.0037.110522T2300Z-110523T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
600 PM CDT SUN MAY 22 2011

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

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

* UNTIL 700 PM CDT

* AT 558 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS     
  LOCATED NEAR STURGEON BAY...AND MOVING NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EGG HARBOR AROUND 615 PM CDT.
  EPHRAIM AROUND 625 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
INSTITUTE...VALMY...CARLSVILLE...JACKSONPORT...BAILEYS HARBOR...FISH
CREEK...PENINSULA STATE PARK...SISTER BAY...ELLISON BAY AND GILLS
ROCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4533 8694 4533 8696 4528 8691 4518 8704
      4512 8699 4512 8700 4514 8702 4497 8718
      4487 8720 4484 8761 4490 8744 4486 8740
      4514 8725 4517 8728 4517 8719 4530 8708
      4531 8699 4540 8695 4529 8690
TIME...MOT...LOC 2300Z 223DEG 47KT 4488 8745
WIND...HAIL 60MPH 1.50IN

$$

EB

2 follow-up statements

017 
WWUS53 KGRB 222339
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
639 PM CDT SUN MAY 22 2011

WIC029-230000-
/O.CON.KGRB.SV.W.0037.000000T0000Z-110523T0000Z/
DOOR WI-
639 PM CDT SUN MAY 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN DOOR 
COUNTY UNTIL 700 PM CDT...

AT 635 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING 1 INCH HAIL...AND DAMAGING 
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES NORTHEAST 
OF EPHRAIM...OR 31 MILES EAST OF MARINETTE...MOVING NORTHEAST AT 45 
MPH.

THE SEVERE THUNDERSTORM WILL FAR NORTHERN DOOR COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4533 8694 4533 8696 4528 8691 4518 8704
      4512 8699 4512 8700 4514 8702 4504 8713
      4508 8719 4513 8725 4514 8725 4515 8726
      4517 8719 4530 8708 4531 8699 4540 8695
      4529 8690
TIME...MOT...LOC 2338Z 223DEG 47KT 4524 8697
WIND...HAIL 60MPH 1.50IN

$$

EB

247 
WWUS53 KGRB 222346
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
646 PM CDT SUN MAY 22 2011

WIC029-222357-
/O.CAN.KGRB.SV.W.0037.000000T0000Z-110523T0000Z/
DOOR WI-
646 PM CDT SUN MAY 22 2011

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

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4533 8694 4533 8696 4528 8691 4518 8704
      4512 8699 4512 8700 4514 8702 4504 8713
      4508 8719 4513 8725 4514 8725 4515 8726
      4517 8719 4530 8708 4531 8699 4540 8695
      4529 8690
TIME...MOT...LOC 2347Z 223DEG 47KT 4533 8685

$$

EB

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.

NWS Green Bay, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at May 22, 5:57 PM CDT, 3 minutes earlier.

Area forecast discussion, May 22, 5:57 PM CDT, 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
557 PM CDT SUN MAY 22 2011

.UPDATE...

SEVERE WEATHER AND TORNADO THREAT CONTINUES THIS EVENING.

STORMS OVER FOX VALLEY AND FAR NORTHEAST WISCONSIN STILL PRODUCING
HAIL UP TO PING BALL SIZE. THESE STORMS SHOULD MOVE OFF SHORE BY
630 PM CDT.

REFOCUSING ATTENTION ON WESTERN HALF OF THE FORECAST AREA WHERE
STRONG UPPER DYNAMICS...ASSOCIATED WITH STRONG DEEP LAYER IN
EXCESS OF 50 KNOTS...AND STRENGTHENING LOW-LEVEL SHEAR WHERE
BOUNDARY FLOW HAS BACKED SUBSTANTIALLY.

STILL MAILY DISCRETE STORMS AT THIS TIME THUS TORNADO THREAT
CONTINUES OVER THE SOUTHWEST...CENTRAL AND NORTHWEST PORTION OF
THE FORECAST AREA. STORMS WILL SPREAD BACK INTO THE FOX VALLEY
BEWTEEN ABOUT 7 AND 730 PM CDT.

ESB
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

Hazardous weather outlook, May 22, 12:03 PM CDT, 5 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE GREEN BAY WI
1203 PM CDT SUN MAY 22 2011

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-231715-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
MENOMINEE-NORTHERN OCONTO-DOOR-MARATHON-SHAWANO-WOOD-PORTAGE-
WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-CALUMET-
MANITOWOC-SOUTHERN MARINETTE-SOUTHERN OCONTO-
1203 PM CDT SUN MAY 22 2011

...SEVERE WEATHER OUTBREAK POSSIBLE THIS AFTERNOON AND THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST
WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A SIGNIFICANT OUTBREAK OF SEVERE THUNDERSTORMS IS POSSIBLE THIS
AFTERNOON AND EVENING. THE PRIMARY RISK IS OF LARGE HAIL AND
DAMAGING WINDS. BUT THERE IS ALSO A RISK OF TORNADOES. OVER
CENTRAL AND NORTH-CENTRAL WISCONSIN...THE GREATEST RISK WILL
OCCUR FROM 200 PM TO 800 PM. OVER THE EAST...THE GREATEST RISK
WILL OCCUR FROM 400 PM THROUGH 1100 PM.

A STRONG UPPER-LEVEL STORM SYSTEM MOVING TOWARD THE AREA FROM THE
WEST IS EXPECTED TO INITIATE SEVERE THUNDERSTORMS OVER SOUTHEAST
MINNESOTA AND WESTERN WISCONSIN DURING THE EARLY TO MIDDLE
AFTERNOON HOURS. THE STORMS ARE EXPECTED TO ORGANIZE INTO A LARGE
COMPLEX OF SEVERE STORMS AND MOVE EAST INTO THE AREA. THE COMPLEX
IS LIKELY TO PRODUCE DAMAGING WINDS AND LARGE HAIL. BUT TORNADOES
WILL ALSO BE POSSIBLE...ESPECIALLY IF A FEW DISCRETE STORMS ARE
ABLE TO DEVELOP AND REACH THE AREA BEFORE ORGANIZING INTO THE
COMPLEX.

AS A RESULT OF THE SEVERE WEATHER POTENTIAL...THE STORM PREDICTION
CENTER HAS POSTED A MODERATE RISK FOR SEVERE THUNDERSTORMS SOUTH
AND WEST OF A LINE FROM WAUSAU TO OSHKOSH...AND A SLIGHT RISK
ACROSS THE REMAINDER OF THE AREA.

AREAS OF DENSE FOG WILL PERSIST NEAR LAKE MICHIGAN TODAY AND
POSSIBLY INTO THIS EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ISOLATED THUNDERSTORMS ARE EXPECTED MONDAY...BUT THOSE STORMS ARE
NOT EXPECTED TO BE SEVERE.

FROST IS POSSIBLE AWAY FROM LAKE MICHIGAN TUESDAY NIGHT...WEDNESDAY
NIGHT...AND THURSDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND THIS EVENING.

LMZ521-522-541>543-231715-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
1203 PM CDT SUN MAY 22 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE
MICHIGAN AND THE WATERS OF GREEN BAY.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS...SOME SEVERE...ARE POSSIBLE LATE THIS AFTERNOON AND
THIS EVENING. AREAS OF DENSE FOG ARE LIKELY TO PERSIST THROUGH THE
EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ISOLATED THUNDERSTORMS ARE EXPECTED MONDAY...BUT THOSE STORMS ARE
NOT EXPECTED TO BE SEVERE. CONDITIONS HAZARDOUS TO SMALL CRAFT
ARE POSSIBLE MONDAY.

EB

In the hours before

Local storm report, May 22, 5:28 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
528 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0505 PM     TSTM WND GST     GREEN BAY               44.51N 88.00W
05/22/2011  E60 MPH          BROWN              WI   TRAINED SPOTTER

0506 PM     HAIL             APPLETON                44.26N 88.40W
05/22/2011  E1.00 INCH       OUTAGAMIE          WI   TRAINED SPOTTER

            AT FOX VALLEY TECH COLLEGE

0506 PM     HAIL             MENASHA                 44.20N 88.44W
05/22/2011  E0.50 INCH       WINNEBAGO          WI   TRAINED SPOTTER

0510 PM     HAIL             HOWARD                  44.56N 88.06W
05/22/2011  E0.50 INCH       BROWN              WI   LAW ENFORCEMENT

0512 PM     HAIL             APPLETON                44.26N 88.40W
05/22/2011  E1.00 INCH       OUTAGAMIE          WI   EMERGENCY MNGR

            DIME TO QUARTER

0521 PM     HAIL             KAUKAUNA                44.26N 88.26W
05/22/2011  E1.75 INCH       OUTAGAMIE          WI   TRAINED SPOTTER

0515 PM     HAIL             DARBOY                  44.23N 88.38W
05/22/2011  E1.00 INCH       CALUMET            WI   TRAINED SPOTTER

&&

TERIE

Local storm report, May 22, 5:30 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
530 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0529 PM     HAIL             WRIGHTSTOWN             44.33N 88.16W
05/22/2011  E1.00 INCH       BROWN              WI   TRAINED SPOTTER

&&

TERIE

Local storm report, May 22, 5:37 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
537 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0520 PM     HAIL             8 SE APPLETON           44.18N 88.29W
05/22/2011  E1.50 INCH       CALUMET            WI   NWS EMPLOYEE

&&

TERIE

Local storm report, May 22, 5:39 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
539 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0539 PM     HAIL             DYCKESVILLE             44.65N 87.75W
05/22/2011  M1.00 INCH       KEWAUNEE           WI   TRAINED SPOTTER

&&

BERSCH

Local storm report, May 22, 5:56 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
556 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0555 PM     HAIL             BABCOCK                 44.29N 90.13W
05/22/2011  M1.00 INCH       WOOD               WI   LAW ENFORCEMENT

&&

BERSCH

Local storm report, May 22, 6:00 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
600 PM CDT SUN MAY 22 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0555 PM     FUNNEL CLOUD     1 W ALGOMA              44.61N 87.45W
05/22/2011                   KEWAUNEE           WI   TRAINED SPOTTER

&&

TERIE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 2:23 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	52 min
May 22, 2:54 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	51 min
May 22, 3:14 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	46 min
May 22, 3:30 PM CDT	Severe Thunderstorm Warning	GRB	Winnebago	45 min
May 22, 3:45 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	30 min
May 22, 3:48 PM CDT	Tornado Warning	GRB	Outagamie, Waupaca, Winnebago	42 min
May 22, 3:53 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	37 min
May 22, 4:29 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie	46 min
May 22, 4:47 PM CDT	Severe Thunderstorm Warning	GRB	Brown	43 min
May 22, 4:54 PM CDT	Special Marine Warning	GRB		96 min
May 22, 5:00 PM CDT	Areal Flood Advisory	GRB	Brown, Outagamie	73 min
May 22, 5:02 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Calumet, Outagamie, Winnebago	32 min
May 22, 5:14 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie	17 min
May 22, 5:29 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Door, Kewaunee	61 min
May 22, 5:32 PM CDT	Severe Thunderstorm Warning	GRB	Wood	43 min
May 22, 5:45 PM CDT	Tornado Warning	GRB	Portage, Wood	45 min
May 22, 5:51 PM CDT	Special Marine Warning	GRB		84 min
May 22, 6:18 PM CDT	Tornado Warning	GRB	Portage, Waupaca, Wood	42 min
May 22, 6:35 PM CDT	Tornado Warning	GRB	Oneida, Vilas	55 min
May 22, 6:56 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Shawano, Waupaca	34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.