Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 15, NWS Green Bay, WI

July 13, 2015Outagamie County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 13, 2015, 3:56 AM CDT for Outagamie County, Wisconsin. It was in force for 34 min. 7 reports 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: Jul 13, 2015, 3:56 AM CDT (08:56 UTC)
Expired: Jul 13, 2015, 4:30 AM CDT
In force: 34 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Outagamie County, WI

The radar

The Green Bay radar (KGRB), 33 km from the middle of the area, began a volume at 08:59 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 13, 4:00 AM CDT	TSTM WND GST 52	Hortonville, WI
Jul 13, 4:05 AM CDT	TSTM WND DMG	Hortonville, WI	PART OF A ROOF BLOWN OFF A BARN.
Jul 13, 4:12 AM CDT	TSTM WND GST 52	Appleton, WI
Jul 13, 4:25 AM CDT	TSTM WND DMG	Appleton, WI	TREES AND POWER LINES DOWN IN CITY.
Jul 13, 4:29 AM CDT	TSTM WND DMG	Kimberly, WI	TREES SNAPPED AND UPROOTED IN CITY.
Jul 13, 4:30 AM CDT	TSTM WND DMG	Appleton, WI	POWER OUT ON THE NORTH AND EAST SIDE OF THE CITY.
Jul 13, 4:30 AM CDT	TSTM WND DMG	Kimberly, WI	NO POWER IN CITY OF KIMBERLY.

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 5 storm reports to this severe thunderstorm warning; the first came 9 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.9 hours before the alert went out and 33 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: 321 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1212 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

268 
WUUS53 KGRB 130856
SVRGRB
WIC087-130930-
/O.NEW.KGRB.SV.W.0015.150713T0856Z-150713T0930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
356 AM CDT MON JUL 13 2015

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OUTAGAMIE COUNTY IN NORTHEASTERN WISCONSIN...

* UNTIL 430 AM CDT

* AT 355 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES EAST OF
  FREMONT...OR 13 MILES WEST OF APPLETON...MOVING NORTHEAST AT 45
  MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  APPLETON AROUND 415 AM CDT.
  LITTLE CHUTE AND KIMBERLY AROUND 420 AM CDT.
  KAUKAUNA AROUND 425 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
GREENVILLE...FIVE CORNERS...BINGHAMTON...SHIOCTON...SEYMOUR...CHICAGO
CORNERS...BEAR CREEK...SUGAR BUSH...TWELVE CORNERS AND MURPHY CORNER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4459 8874 4459 8820 4425 8819 4424 8873
TIME...MOT...LOC 0855Z 244DEG 38KT 4425 8868 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

ECKBERG/TDH

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 Jul 13, 3:37 AM CDT, 19 minutes earlier.

Area forecast discussion, Jul 13, 3:37 AM CDT, 19 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
337 AM CDT MON JUL 13 2015

FORECAST DISCUSSION FOR ROUTINE MORNING FORECAST ISSUANCE

.SHORT TERM...TODAY...TONIGHT...AND TUESDAY
ISSUED AT 337 AM CDT MON JUL 13 2015

ACTIVE PATTERN FOR THE START OF THE WORK WEEK WITH A MID LEVEL
TROUGH SLOWLY DROPPING SOUTHEASTWARD THROUGH THE WESTERN GREAT
LAKES REGION. PCPN TIMING AND INTENSITY THE PRIMARY CHALLENGE.

LINE OF STORMS WILL BE MOVING THROUGH THE AREA THIS MORNING...MORE
INFORMATION ON THESE STORMS CAN BE FOUND IN SPECIAL WEATHER
STATEMENTS AND POSSIBLE ISOLATED WARNINGS. SOUTHEAST WINDS BEHIND
THE INITIAL BAND MAY BE SIGN OF WAKE LOW DEVELOPMENT AND WILL BE
MONITORED THIS MORNING AS WELL.

AFTER THIS MORNING STORMS...ANTICIPATE SOME DECREASE IN COVERAGE
BEFORE STORMS INCREASE AGAIN THIS AFTERNOON WITH THE H850 TROUGH
SLIDING THROUGH THE UNSTABLE AIR MASS WITH CAPES OF NEAR 1500 THIS
AFTERNOON. SEVERE POTENTIAL WOULD DEPEND ON AMOUNT OF SUN FOR
FURTHER DESTABILIZATION. THE CHANCE OF STORMS WILL LINGER
INTO TUESDAY BUT LIKELY MORE FOCUSED EARLY IN THE DAY OVER NORTH
CENTRAL AND NORTHEAST WISCONSIN DUE TO FRONT DROPPING SOUTH OVER
THE AREA AND THE UPPER RIDGE MOVING INTO THE AREA FROM THE WEST.

.LONG TERM...TUESDAY NIGHT THROUGH SUNDAY
ISSUED AT 337 AM CDT MON JUL 13 2015

QUIET WEATHER EXPECTED THROUGH MID WEEK AS THE UPPER RIDGE BUILDS
INTO THE WESTERN GREAT LAKES REGION AND SURFACE HIGH PRESSURE
DRIFTING OVER THE AREA.

REST OF THE FORECAST...A CHANCE OF THUNDERSTORMS RETURNS THURSDAY
AND FRIDAY WHEN WEAK SHORTWAVES APPROACHING THE AREA AS THE UPPER
RIDGE BECOMES MORE ZONAL. LOW CONFIDENCE WITH THE TIMING OF
THESE THUNDERSTORM CHANCES. TEMPERATURES ARE EXPECTED TO BE ABOVE
NORMAL FOR MUCH OF THE PERIOD.
&&

.AVIATION...FOR 06Z TAF ISSUANCE
ISSUED AT 1156 PM CDT SUN JUL 12 2015

A DEVELOPING THUNDERSTORM COMPLEX OVER MINNESOTA WILL
BRING A ROUND OF SHOWERS AND THUNDERSTORMS TO THE TAF SITES
EARLY THIS MORNING. AT THIS TIME IT APPEARS THE STORMS ARE STRONG
BUT NOT SEVERE. THE STORMS SHOULD CONTINUE TO DISSIPATE AS THEY
HEAD EAST. CLOUDS WILL TRAIL THIS SYSTEM WITH ANOTHER ROUND OF
THUNDERSTORMS POSSIBLE ON MONDAY. HOWEVER THESE WILL BE HIGHLY
CONDITIONAL ON HOW MUCH INSTABILITY CAN BUILD UP DURING THE
AFTERNOON HOURS. GIVEN THE UNCERTAINTY WILL CONTINUE TO LEAVE OUT
OF THE TAFS AT THIS TIME.
&&

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

SHORT TERM.....TDH
LONG TERM......TDH
AVIATION.......KURIMSKI

Hazardous weather outlook, Jul 12, 3:29 PM CDT, 12 hours 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
329 PM CDT SUN JUL 12 2015

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-132030-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE COUNTY-LINCOLN-
LANGLADE-MENOMINEE-NORTHERN OCONTO COUNTY-DOOR-MARATHON-SHAWANO-
WOOD-PORTAGE-WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-
CALUMET-MANITOWOC-SOUTHERN MARINETTE COUNTY-
SOUTHERN OCONTO COUNTY-
329 PM CDT SUN JUL 12 2015

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

.DAY ONE...TONIGHT

THERE IS POTENTIAL FOR SEVERE WEATHER OVERNIGHT...WITH PRIMARY
THREATS OF DAMAGING WINDS AND TORRENTIAL RAINFALL. THE GREATEST
THREAT WILL BE FROM MIDNIGHT TO 8AM...WEST OF A EAGLE RIVER TO
WAUTOMA LINE. SOME SEVERE POTENTIAL DOES EXIST EAST OF THAT LINE
TO THE LAKE MICHIGAN SHORELINE.

THE STORMS RESPONSIBLE FOR THIS POTENTIALLY SEVERE WEATHER ARE
DEVELOPING AND BECOMING SEVERE IN EASTERN NORTH DAKOTA AND
NORTHWESTERN MINNESOTA. THEY WILL MOVE TO THE SOUTHEAST THROUGH
THE AFTERNOON AND EVENING...LIKELY REACHING OUR AREA AFTER
MIDNIGHT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY

A LULL OR BREAK IN THE THUNDERSTORM ACTIVITY IS EXPECTED LATER
MONDAY MORNING. THUNDERSTORMS ARE THEN EXPECTED TO REDEVELOP OR
INCREASE IN COVERAGE MONDAY AFTERNOON INTO MONDAY NIGHT. ISOLATED
STORMS COULD BECOME STRONG WITH GUSTY WINDS...SMALL HAIL AND
TORRENTIAL RAINFALL.

THERE IS A CHANCE OF THUNDERSTORMS ON TUESDAY...A FEW OF THESE
STORMS COULD BECOME STRONG ACROSS CENTRAL AND PARTS OF NORTHEAST
WISCONSIN. THUNDERSTORMS ARE IN THE FORECAST FROM TIME TO TIME
THURSDAY THROUGH THE WEEKEND. IT IS TOO EARLY TO DETERMINE IF ANY
OF THESE STORMS WOULD BECOME SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE TONIGHT INTO MONDAY
MORNING.

LMZ521-522-541>543-132030-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
329 PM CDT SUN JUL 12 2015

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

.DAY ONE...TONIGHT

A COMPLEX OF THUNDERSTORMS IS EXPECTED TO MOVE ACROSS THE REGION
LATE TONIGHT INTO MONDAY MORNING. SOME OF THE STORMS COULD
PRODUCE GUSTY WINDS...FREQUENT CLOUD TO WATER LIGHTNING STRIKES
AND LOCALLY HEAVY RAINFALL THAT MAY REDUCE VISIBILITIES.

MARINE FOG MAY BECOME LOCALLY DENSE TONIGHT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY

THERE WILL BE A CHANCE OF THUNDERSTORMS MONDAY AFTERNOON THROUGH
TUESDAY AFTERNOON.

THUNDERSTORMS ARE IN THE FORECAST FROM TIME TO TIME FROM THURSDAY INTO
NEXT WEEKEND. IT IS TOO EARLY TO DETERMINE IF ANY OF THESE STORMS
WOULD BECOME SEVERE.

POTENTIAL FOR LOCALLY DENSE MARINE FOG WILL PERSIST INTO TUESDAY.

LUCHS/MPC

In the hours before

Local storm report, Jul 13, 2:51 AM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
251 AM CDT MON JUL 13 2015

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

0245 AM     TSTM WND GST     WISCONSIN RAPIDS        44.40N 89.84W
07/13/2015  M57 MPH          WOOD               WI   ASOS

&&

SAC

Local storm report, Jul 13, 2:54 AM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
254 AM CDT MON JUL 13 2015

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

0233 AM     TSTM WND GST     WAUSAU                  44.96N 89.63W
07/13/2015  M46 MPH          MARATHON           WI   ASOS

&&

SAC

Local storm report, Jul 13, 3:02 AM CDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
302 AM CDT MON JUL 13 2015

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

0233 AM     TSTM WND DMG     WAUSAU                  44.96N 89.63W
07/13/2015                   MARATHON           WI   LAW ENFORCEMENT

            TREES DOWN IN THE CITY.

&&

SAC

Local storm report, Jul 13, 3:11 AM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
311 AM CDT MON JUL 13 2015

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

0252 AM     TSTM WND GST     PLOVER                  44.45N 89.53W
07/13/2015  M48 MPH          PORTAGE            WI   CO-OP OBSERVER

            ALSO 1.22 INCHES OF PRECIP IN THE LAST HOUR.

&&

SAC

Local storm report, Jul 13, 3:46 AM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
346 AM CDT MON JUL 13 2015

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

0330 AM     TSTM WND DMG     SW WAUTOMA              44.06N 89.28W
07/13/2015                   WAUSHARA           WI   PUBLIC

            LARGE TREES DOWN IN THE CITY AT HWY 22 AND YY.

&&

SAC

Local storm report, Jul 13, 3:50 AM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
350 AM CDT MON JUL 13 2015

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

0337 AM     TSTM WND GST     CLINTONVILLE            44.61N 88.75W
07/13/2015  M60 MPH          WAUPACA            WI   PUBLIC

&&

SAC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 12:27 AM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Oneida, Vilas, Wood	78 min
Jul 13, 2:08 AM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Oneida, Vilas, Wood	82 min
Jul 13, 2:10 AM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	65 min
Jul 13, 2:52 AM CDT	Severe Thunderstorm Warning	GRB	Waushara	53 min
Jul 13, 3:06 AM CDT	Severe Thunderstorm Warning	GRB	Shawano, Waupaca	54 min
Jul 13, 3:16 AM CDT	Severe Thunderstorm Warning	GRB	Portage	19 min
Jul 13, 3:32 AM CDT	Severe Thunderstorm Warning	GRB	Winnebago	43 min
Jul 13, 3:45 AM CDT	Areal Flood Advisory	GRB	Calumet, Outagamie, Winnebago	2 hr
Jul 13, 3:48 AM CDT	Special Marine Warning	GRB		117 min
Jul 13, 4:05 AM CDT	Areal Flood Advisory	GRB	Portage	3 hr
Jul 13, 4:19 AM CDT	Tornado Warning	GRB	Outagamie	26 min
Jul 13, 4:30 AM CDT	Severe Thunderstorm Warning	GRB	Brown	45 min
Jul 13, 4:47 AM CDT	Severe Thunderstorm Warning	GRB	Kewaunee	43 min
Jul 13, 5:33 AM CDT	Special Weather Statement	GRB	Door	87 min
Jul 13, 5:41 AM CDT	Special Marine Warning	GRB		94 min
Jul 13, 4:55 PM CDT	Special Weather Statement	GRB	Lincoln	65 min
Jul 13, 5:01 PM CDT	Special Weather Statement	GRB	Oneida	29 min
Jul 13, 5:07 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon	38 min
Jul 13, 5:38 PM CDT	Special Weather Statement	GRB	Marinette	37 min
Jul 13, 5:42 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Marathon, Shawano	33 min
Jul 13, 5:47 PM CDT	Special Weather Statement	GRB	Langlade	43 min
Jul 13, 5:50 PM CDT	Special Weather Statement	GRB	Marathon	40 min
Jul 13, 6:05 PM CDT	Special Weather Statement	GRB	Marinette	55 min
Jul 13, 6:11 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Shawano	27 min
Jul 13, 6:12 PM CDT	Special Weather Statement	GRB	Oneida	33 min
Jul 13, 6:16 PM CDT	Special Marine Warning	GRB		59 min
Jul 13, 6:19 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca	56 min
Jul 13, 6:30 PM CDT	Special Weather Statement	GRB	Kewaunee	45 min
Jul 13, 6:32 PM CDT	Special Marine Warning	GRB		88 min
Jul 13, 6:40 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	50 min
Jul 13, 6:53 PM CDT	Special Marine Warning	GRB		2 hr
Jul 13, 6:54 PM CDT	Severe Thunderstorm Warning	GRB	Waushara	51 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2015 Every severe thunderstorm warning in 2015

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.