Alert archive / Wisconsin / Heat Advisories in 2018

Heat Advisory 2, NWS Milwaukee, WI

June 28, 201820 counties in Wisconsin

NWS Milwaukee, WI issued this heat advisory at Jun 28, 2018, 3:15 AM CDT for 20 counties in Wisconsin. It took effect at Jun 29, 2018, 12:00 PM CDT. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued: Jun 28, 2018, 3:15 AM CDT (08:15 UTC)
In effect from: Jun 29, 2018, 12:00 PM CDT
Expired: Jun 30, 2018, 10:00 PM CDT
In force: 34 hr
Issued by: NWS Milwaukee, WI

Counties Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI

The radar

The Milwaukee radar (KMKX), 31 km from the middle of the area, began a volume at 08:14 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

Lincoln, IL (KILX), launched 00:00Z, 8.3 hours before the alert went out and 336 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: 296 J/kg
Mixed-layer CIN: -218 J/kg
Mixed-layer LCL: 1354 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 Milwaukee, WI wrote its last area forecast discussion before this heat advisory went out at Jun 27, 5:50 PM CDT, 9 hours 25 minutes earlier.

Area forecast discussion, Jun 27, 5:50 PM CDT, 9 hours 25 minutes before

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Hazardous weather outlook, Jun 27, 4:02 PM CDT, 11 hours 13 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 5:06 AM CDT	Dense Fog Advisory	MKX	Columbia, Dane, Dodge, Green, Iowa, Jefferson and 4 more	3 hr
Jun 28, 3:24 PM CDT	Beach Hazards Statement	MKX	Milwaukee, Ozaukee, Sheboygan	32 hr
Jun 28, 3:27 PM CDT	Small Craft Advisory	MKX		32 hr

Nearby

Heat Advisories in Wisconsin, 2018 Every heat advisory in 2018

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.