Alert archive / Wisconsin / Special Weather Statements in 2016

Special Weather Statement, NWS Green Bay, WI

July 27, 2016Oconto County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jul 27, 2016, 9:50 PM CDT for Oconto County, Wisconsin. It was in force for 55 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
Jul 27, 2016, 9:50 PM CDT (02:50 UTC)
Expired
Jul 27, 2016, 10:45 PM CDT
In force
55 min
Issued by
NWS Green Bay, WI

County Oconto County, WI

The radar

The Green Bay radar (KGRB), 51 km from the middle of the area, began a volume at 02:54 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

Davenport, (KDVN), launched 00:00Z, 2.8 hours before the alert went out and 409 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-pSkew-T log-p diagram, Davenport, at 00:00Z on 2016-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 590 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2016-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
590 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1314 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 27, 6:40 PM CDT, 3 hours 10 minutes earlier.

Area forecast discussion, Jul 27, 6:40 PM CDT, 3 hours 10 minutes before
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Hazardous weather outlook, Jul 27, 2:53 PM CDT, 6 hours 57 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
253 PM CDT WED JUL 27 2016

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-282000-
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-
253 PM CDT WED JUL 27 2016

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

.DAY ONE...TONIGHT

THUNDERSTORMS ARE LIKELY ACROSS THE REGION. THE PRIMARY THREAT WILL
BE HEAVY RAINFALL AND LOCALIZED FLOODING, BUT A FEW OF THE STRONGER
STORMS MAY ALSO PRODUCE WIND GUSTS OVER 40 MPH AND HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

THERE IS A CHANCE OF THUNDERSTORMS OVER PARTS OF CENTRAL AND EAST
CENTRAL WISCONSIN ON THURSDAY, BUT SEVERE WEATHER IS NOT EXPECTED.

THERE IS ALSO A CHANCE OF THUNDERSTORMS FROM MONDAY NIGHT THROUGH
NEXT WEDNESDAY, BUT IT IS TOO EARLY TO DETERMINE IF SEVERE
WEATHER WILL OCCUR.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO REPORT HEAVY RAINFALL IN EXCESS OF
AN INCH, FLOODING, WIND GUSTS OVER 40 MPH, AND HAIL TO THE
NATIONAL WEATHER SERVICE.

LMZ521-522-541>543-282000-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
253 PM CDT WED JUL 27 2016

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

.DAY ONE...TONIGHT

THUNDERSTORMS WILL POSE A HAZARD TO BOATERS AT TIMES. A FEW
STORMS WILL PRODUCE HEAVY RAINFALL, GUSTY WINDS, AND POSSIBLY
SOME SMALL HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

THUNDERSTORMS MAY POSE A HAZARD TO BOATERS SOUTH OF KEWAUNEE ON
THURSDAY.

THERE IS ALSO A CHANCE OF THUNDERSTORMS TUESDAY INTO WEDNESDAY.

RDM/KIECKBUSCH

In the hours before

Local storm report, Jul 27, 5:29 PM CDT, 4 hours 21 minutes before
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Special weather statement, Jul 27, 5:39 PM CDT, 4 hours 11 minutes before
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Local storm report, Jul 27, 5:43 PM CDT, 4 hours 7 minutes before
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Special weather statement, Jul 27, 5:44 PM CDT, 4 hours 6 minutes before
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Special weather statement, Jul 27, 6:26 PM CDT, 3 hours 24 minutes before
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Local storm report, Jul 27, 6:32 PM CDT, 3 hours 18 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 7:06 PM CDTSpecial Weather StatementGRBLanglade24 min
Jul 27, 7:21 PM CDTAreal Flood AdvisoryGRBMarathon4 hr
Jul 27, 7:55 PM CDTSpecial Weather StatementGRBShawano50 min
Jul 27, 8:06 PM CDTAreal Flood AdvisoryGRBShawano3 hr
Jul 27, 8:43 PM CDTSpecial Weather StatementGRBMenominee32 min
Jul 27, 9:15 PM CDTSpecial Weather StatementGRBMenominee, Oconto45 min

Nearby

Special Weather Statements in Wisconsin, 2016Every special weather statement in 2016

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.