Alert archive / Wisconsin / Special Weather Statements in 2016

Special Weather Statement, NWS Green Bay, WI

September 21, 2016Oneida County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Sep 21, 2016, 3:42 PM CDT for Oneida County, Wisconsin. It was in force for 48 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
Sep 21, 2016, 3:42 PM CDT (20:42 UTC)
Expired
Sep 21, 2016, 4:30 PM CDT
In force
48 min
Issued by
NWS Green Bay, WI

County Oneida County, WI

The radar

The Green Bay radar (KGRB), 192 km from the middle of the area, began a volume at 20:43 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.7 hours before the alert went out and 315 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, Minneapolis, MN at 12:00Z on 2016-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 515 joules per kilogram.LCLLFCEL10008507005003002001001 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, Minneapolis, MN at 12:00Z on 2016-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.193958Sfc1 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
515 J/kg
Mixed-layer CIN
-331 J/kg
Mixed-layer LCL
738 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.5

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 Sep 21, 2:26 PM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, Sep 21, 2:26 PM CDT, 1 hour 16 minutes before
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Hazardous weather outlook, Sep 21, 2:34 PM CDT, 1 hour 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
234 PM CDT WED SEP 21 2016

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-221945-
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-
234 PM CDT WED SEP 21 2016

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

.DAY ONE...TONIGHT

PERIODS OF THUNDERSTORMS ARE EXPECTED TONIGHT AS A WARM FRONT
LIFTS NORTH TOWARD THE REGION. THERE IS A MARGINAL RISK FOR THESE
STORMS TO BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL, MAINLY
OVER CENTRAL WISCONSIN. THESE STORMS WILL ALSO BE CAPABLE OF
PRODUCING VERY HEAVY RAINFALL.

A FLASH FLOOD WATCH IS IN EFFECT FOR AREAS ALONG AND SOUTH OF A
LINE FROM TOMAHAWK, TO GREEN BAY, TO KEWAUNEE. RAINFALL AMOUNTS OF
1 TO 4 INCHES ARE ANTICIPATED ACROSS THE AREA, WITH LOCALLY HIGHER
AMOUNTS POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

THE CHANCE OF THUNDERSTORMS WILL CONTINUE ON THURSDAY AND
THURSDAY NIGHT, MAINLY OVER CENTRAL AND EAST-CENTRAL WISCONSIN.
THE PRIMARY THREAT WILL BE HEAVY RAINFALL AND LOCALIZED FLOODING.

THERE IS ALSO A CHANCE OF THUNDERSTORMS FROM FRIDAY THROUGH
EARLY NEXT WEEK, BUT THESE STORMS ARE NOT EXPECTED TO BE SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD REPORT ANY OCCURRENCES OF WIND DAMAGE OR LARGE
HAIL TONIGHT, AS WELL AS ANY RAINFALL AMOUNTS IN EXCESS OF AN
INCH OVER THE REMAINDER OF THE WORK WEEK.

LMZ521-522-541>543-221945-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
234 PM CDT WED SEP 21 2016

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

.DAY ONE...TONIGHT

THUNDERSTORMS MAY POSE A SIGNIFICANT HAZARD TO MARINERS AT TIMES
TONIGHT. THESE STORMS WILL ALSO BE CAPABLE OF PRODUCING VERY
HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

THUNDERSTORMS MAY POSE A SIGNIFICANT HAZARD TO MARINERS AT TIMES
THURSDAY AND THURSDAY NIGHT. THESE STORMS WILL BE CAPABLE OF
PRODUCING HEAVY RAINFALL.

ADDITIONAL CHANCES FOR STORMS EXIST FROM FRIDAY THROUGH EARLY NEXT
WEEK. THE STORMS MAY CREATE HAZARDOUS CONDITIONS FOR BOATERS.

MPC/MG

In the hours before

Special weather statement, Sep 21, 1:46 PM CDT, 1 hour 56 minutes before
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Special weather statement, Sep 21, 2:37 PM CDT, 1 hour 5 minutes before
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Special weather statement, Sep 21, 2:37 PM CDT, 1 hour 5 minutes before
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Special weather statement, Sep 21, 3:30 PM CDT, 12 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
330 PM CDT WED SEP 21 2016

WIZ031-037>039-045-048>050-074-212200-
SOUTHERN OCONTO COUNTY WI-WAUPACA WI-MANITOWOC WI-BROWN WI-
SHAWANO WI-OUTAGAMIE WI-CALUMET WI-WINNEBAGO WI-WAUSHARA WI-
330 PM CDT WED SEP 21 2016

...STORMS WITH TORRENTIAL RAINFALL APPROACHING EAST CENTRAL
WISCONSIN...

AT 326 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF THUNDERSTORMS
ALONG A LINE EXTENDING FROM 7 MILES WEST OF CLINTONVILLE TO NEAR
COLUMBUS IN SOUTH CENTRAL WISCONSIN.  MOVEMENT WAS EAST AT 25 MPH.

TORRENTIAL RAINFALL AND UP TO HALF INCH HAIL WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
GREEN BAY...APPLETON...OSHKOSH...MENASHA...KAUKAUNA...LITTLE CHUTE...
NEW LONDON...KIMBERLY...BERLIN AND CLINTONVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS AND MAY LEAD TO
LOCALIZED FLOODING.  MOTORISTS SHOULD BE PREPARED FOR REDUCED
VISIBILITIES AND PONDING OF WATER ON AREA ROADWAYS.

&&

LAT...LON 4390 8889 4398 8889 4398 8902 4468 8898
      4477 8788 4471 8792 4463 8793 4465 8789
      4464 8789 4389 8795 4389 8816 4394 8816
      4394 8840 4389 8840
TIME...MOT...LOC 2026Z 268DEG 23KT 4462 8890 4337 8898

TDH
Special weather statement, Sep 21, 3:42 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
342 PM CDT WED SEP 21 2016

WIZ010-212130-
ONEIDA WI-
342 PM CDT WED SEP 21 2016

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN ONEIDA COUNTY UNTIL 430
PM CDT...

AT 342 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12
MILES EAST OF PHILLIPS...OR 19 MILES SOUTHEAST OF PARK FALLS...MOVING
EAST AT 35 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  WILLOW RESERVOIR AND SQUIRREL LAKE AROUND 405 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE MC
NAUGHTON...GOODNOW... LAKE TOMAHAWK...HARSHAW...MINOCQUA AND
HAZELHURST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4588 9004 4590 8939 4556 8942 4556 9004
TIME...MOT...LOC 2042Z 262DEG 30KT 4575 9014

MPC

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 12:37 AM CDTSpecial Weather StatementGRBWood53 min
Sep 21, 1:59 AM CDTSpecial Weather StatementGRBWaushara61 min
Sep 21, 2:33 AM CDTSpecial Weather StatementGRBBrown, Calumet, Menominee, Oconto, Outagamie, Shawano and 3 more87 min
Sep 21, 2:42 AM CDTSevere Thunderstorm WarningGRBOutagamie, Portage, Waupaca, Waushara, Winnebago48 min
Sep 21, 3:02 AM CDTFlash Flood WatchGRBBrown, Calumet, Kewaunee, Langlade, Lincoln, Manitowoc and 9 more30 hr
Sep 21, 10:53 AM CDTRiver Flood WarningGRBWood3 days
Sep 21, 1:46 PM CDTSpecial Weather StatementGRBWood29 min
Sep 21, 2:30 PM CDTAreal Flood AdvisoryGRBPortage, Waushara, Wood6 hr
Sep 21, 2:37 PM CDTSpecial Weather StatementGRBPortage, Waushara, Wood23 min
Sep 21, 2:56 PM CDTSevere Thunderstorm WarningGRBPortage, Waushara22 min
Sep 21, 3:30 PM CDTSpecial Weather StatementGRBBrown, Calumet, Outagamie, Waupaca, Winnebago90 min
Sep 21, 4:27 PM CDTSpecial Weather StatementGRBOneida48 min
Sep 21, 5:27 PM CDTSpecial Weather StatementGRBMarathon78 min
Sep 21, 6:01 PM CDTAreal Flood AdvisoryGRBWood119 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.