Alert archive / Wisconsin / Heat Advisories in 2016

Heat Advisory 1, NWS Green Bay, WI

July 20, 201613 counties in Wisconsin

NWS Green Bay, WI issued this heat advisory at Jul 20, 2016, 3:02 PM CDT for 13 counties in Wisconsin. It took effect at Jul 21, 2016, 12:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
Jul 20, 2016, 3:02 PM CDT (20:02 UTC)
In effect from
Jul 21, 2016, 12:00 PM CDT
Expired
Jul 21, 2016, 3:51 AM CDT
In force
Issued by
NWS Green Bay, WI

Counties Brown County, WI, Calumet County, WI, Manitowoc County, WI, Marathon County, WI, Menominee County, WI, Oconto County, WI, Outagamie County, WI, Portage County, WI, Shawano County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 54 km from the middle of the area, began a volume at 20:03 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, 8.0 hours before the alert went out and 54 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

What forecasters said that day

The local office's own words before this heat advisory 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 heat advisory went out at Jul 20, 2:49 PM CDT, 13 minutes earlier.

Area forecast discussion, Jul 20, 2:49 PM CDT, 13 minutes before
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Hazardous weather outlook, Jul 20, 2:53 PM CDT, 9 minutes before
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In the hours before

Special weather statement, Jul 20, 10:49 AM CDT, 4 hours 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1049 AM CDT WED JUL 20 2016

WIZ030-035-036-045-201630-
PORTAGE-WOOD-MARATHON-WAUSHARA-
1049 AM CDT WED JUL 20 2016

...THUNDERSTORMS WILL AFFECT CENTRAL WISCONSIN LATE THIS
MORNING...

AT 1046 AM CDT...RADAR INDICATED THUNDERSTORMS EXTENDING FROM NEAR
DORCHESTER TO 7 MILES NORTHEAST OF NECEDAH. MOVEMENT WAS EAST AT 30
MPH.

BRIEF TORRENTIAL RAINFALL AND DANGEROUS LIGHTNING ARE LIKELY WITH
THESE STORMS.  WIND GUSTS TO 35 MPH ARE ALSO POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
WAUSAU...STEVENS POINT...WISCONSIN RAPIDS...MARSHFIELD...WESTON...RIB
MOUNTAIN...MOSINEE...WHITING...PITTSVILLE AND PLAINFIELD.

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.

LAT...LON 4503 9022 4504 9020 4507 9020 4512 8973
      4512 8944 4398 8945 4398 8960 4425 8960
      4425 9022
TIME...MOT...LOC 1546Z 253DEG 24KT 4507 9026 4412 8999

EB
Special weather statement, Jul 20, 10:54 AM CDT, 4 hours 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1054 AM CDT WED JUL 20 2016

WIZ030-035-201630-
WOOD-MARATHON-
1054 AM CDT WED JUL 20 2016

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN MARATHON
AND NORTHERN WOOD COUNTIES...

AT 1050 AM CDT...STRONG THUNDERSTORMS WERE CLUSTERED OVER
MARSHFIELD... OR 22 MILES EAST OF NEILLSVILLE...MOVING EAST AT 15
MPH.

WINDS IN EXCESS OF 30 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THIS
STORM. PEA TO HALF INCH HAIL WAS REPORTED IN MARSHFIELD AT 1050 AM
CDT BY A STORM SPOTTER.

THIS STORM WILL IMPACT NORTHERN WOOD AND EXTREME SOUTHWESTERN
MARATHON COUNTIES...INCLUDING THE FOLLOWING LOCATIONS:
BAKERVILLE...POWERS...HEWITT...AUBURNDALE...SHERRY...ARPIN...
BLENKER AND ROZELLVILLE.

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 4454 9027 4472 9026 4477 8985 4443 8987
TIME...MOT...LOC 1550Z 268DEG 14KT 4467 9017

EB
Local storm report, Jul 20, 11:09 AM CDT, 3 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1109 AM CDT WED JUL 20 2016

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

1107 AM     HAIL             2 NW MARSHFIELD         44.68N 90.19W
07/20/2016  M0.50 INCH       WOOD               WI   TRAINED SPOTTER

            HAIL AND ESTIMATED WIND GUSTS TO 30 MPH WITH HEAVY RAIN
            CAUSING WATER PONDING.

&&

ML
Special weather statement, Jul 20, 11:20 AM CDT, 3 hours 42 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, 3 hours 23 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, 5:18 PM CDTSpecial Weather StatementGRBWood57 min
Jul 20, 6:02 PM CDTSpecial Weather StatementGRBWood58 min

Nearby

Heat Advisories in Wisconsin, 2016Every heat advisory 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.