Alert archive / Wisconsin / Special Weather Statements in 2016

Special Weather Statement, NWS Green Bay, WI

July 20, 2016Wood County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jul 20, 2016, 5:18 PM CDT for Wood County, Wisconsin. It was in force for 57 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 20, 2016, 5:18 PM CDT (22:18 UTC)
Expired
Jul 20, 2016, 6:15 PM CDT
In force
57 min
Issued by
NWS Green Bay, WI

County Wood County, WI

The radar

The La Crosse radar (KARX), 140 km from the middle of the area, began a volume at 22:19 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.3 hours before the alert went out and 170 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, Green Bay/Straub, WI at 12:00Z on 2016-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 202 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, Green Bay/Straub, WI at 12:00Z on 2016-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
202 J/kg
Mixed-layer CIN
-204 J/kg
Mixed-layer LCL
1054 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
101 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 20, 2:49 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, Jul 20, 2:49 PM CDT, 2 hours 29 minutes before
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Hazardous weather outlook, Jul 20, 2:53 PM CDT, 2 hours 25 minutes before
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In the hours before

Special weather statement, Jul 20, 11:20 AM CDT, 5 hours 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1120 AM CDT WED JUL 20 2016

WIZ030-035-036-201700-
PORTAGE-WOOD-MARATHON-
1120 AM CDT WED JUL 20 2016

...AN AREA OF STRONG THUNDERSTORMS WILL CONTINUE TO AFFECT SOUTHERN
MARATHON...WOOD AND WESTERN PORTAGE COUNTIES...

AT 1116 AM CDT...STRONG THUNDERSTORMS WERE CLUSTERED NEAR
MARSHFIELD...OR 19 MILES NORTHWEST OF WISCONSIN RAPIDS...MOVING EAST
AT 20 MPH.

WINDS IN EXCESS OF 30 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THIS
STORM.  THESE STORMS ARE ALSO PRODUCING BRIEF TORRENTIAL RAINFALL
AND REDUCED VISIBILITIES.

LOCATIONS IMPACTED INCLUDE...
STEVENS POINT...WISCONSIN RAPIDS...MARSHFIELD...MOSINEE...WHITING...
PITTSVILLE...LAKE WAZEECHA...PLOVER...NEKOOSA AND KNOWLTON.

BRIEF TORRENTIAL RAINFALL MAY CAUSE LOCALIZED FLOODING AND PONDING
OF WATER ON ROADWAYS. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
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 4479 9024 4480 8943 4425 8964 4445 9028
TIME...MOT...LOC 1616Z 279DEG 25KT 4464 9005

EB
Special weather statement, Jul 20, 11:39 AM CDT, 5 hours 39 minutes before
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Special weather statement, Jul 20, 5:18 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 10:49 AM CDTSpecial Weather StatementGRBMarathon, Portage, Wood41 min
Jul 20, 10:54 AM CDTSpecial Weather StatementGRBWood36 min
Jul 20, 11:20 AM CDTSpecial Weather StatementGRBWood40 min
Jul 20, 11:39 AM CDTSpecial Weather StatementGRBPortage51 min
Jul 20, 3:02 PM CDTHeat AdvisoryGRBBrown, Calumet, Manitowoc, Marathon, Menominee, Oconto and 7 more13 hr
Jul 20, 6:02 PM CDTSpecial Weather StatementGRBWood58 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.