Excessive Heat in Wisconsin, July 1, 2018

Name: Excessive Heat in Wisconsin, July 1, 2018
Start: 2018-07-01T00:00
End: 2018-07-01T21:00
Location: Wisconsin

July 1, 2018 · NWS MKX · 3 events in 3 counties and zones

Two to three days of hot and humid conditions produced heat index values in the 100's. Numerous cooling centers were opened by local communities throughout southern WI.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MKX wrote it up.

Two to three days of hot and humid conditions produced heat index values in the 100's. Numerous cooling centers were opened by local communities throughout southern WI. Some public swimming pools hours were extended due to the heat. The heatwave continued into July 1st over far southeast WI.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Jun 30, 10:15 PM CST, 1 hour 45 minutes earlier.

Area forecast discussion, Jun 30, 10:15 PM CST, 1 hour 45 minutes before

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Hazardous weather outlook, Jun 30, 8:37 PM CST, 3 hours 23 minutes before

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In the hours before

Special weather statement, Jun 30, 7:31 PM CST, 4 hours 29 minutes before

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Local storm report, Jun 30, 8:05 PM CST, 3 hours 55 minutes before

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Local storm report, Jun 30, 8:27 PM CST, 3 hours 33 minutes before

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Local storm report, Jun 30, 8:58 PM CST, 3 hours 2 minutes before

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Special weather statement, Jun 30, 9:09 PM CST, 2 hours 51 minutes before

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Special weather statement, Jun 30, 10:19 PM CST, 1 hour 41 minutes before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 excessive heat. Local standard time, as filed.

Excessive Heat, Milwaukee

When: July 1, 12:00 AM CST to 9:00 PM CST
Where: Milwaukee forecast zone
Reported by: Mesonet
Coordinates: 43.022, -87.929 (the zone’s center; the record gives no point)

Heat index values around 100 degrees.

Excessive Heat, Racine

When: July 1, 12:00 AM CST to 9:00 PM CST
Where: Racine forecast zone
Reported by: Mesonet
Coordinates: 42.730, -87.812 (the zone’s center; the record gives no point)

Heat index values around 100 degrees.

Excessive Heat, Kenosha

When: July 1, 12:00 AM CST to 9:00 PM CST
Where: Kenosha forecast zone
Reported by: Mesonet
Coordinates: 42.573, -87.840 (the zone’s center; the record gives no point)

Heat index values around 100 degrees.

What these are

Excessive Heat: Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Wisconsin in 2018 Every state in 2018 This day in weather history Warnings in Wisconsin, July 2018

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 761723, 761725, 761726.