Alert archive / Missouri / Heat Advisories in 2023

Heat Advisory 2, NWS St. Louis, MO

June 28, 202325 counties in Missouri; 10 counties in Illinois

NWS St. Louis, MO issued this heat advisory at Jun 28, 2023, 3:02 AM CDT for 25 counties in Missouri; 10 counties in Illinois. It took effect at Jun 29, 2023, 10:00 AM CDT. It was in force for 33 hr.

The area

The counties it named.

The facts

Issued: Jun 28, 2023, 3:02 AM CDT (08:02 UTC)
In effect from: Jun 29, 2023, 10:00 AM CDT
Expired: Jun 30, 2023, 7:00 PM CDT
In force: 33 hr
Issued by: NWS St. Louis, MO

All 35 counties

Bond County, IL, Calhoun County, IL, Clinton County, IL, Jersey County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 20 km from the middle of the area, began a volume at 08:02 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.

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 St. Louis, MO wrote its last area forecast discussion before this heat advisory went out at Jun 27, 10:38 PM CDT, 4 hours 24 minutes earlier.

Area forecast discussion, Jun 27, 10:38 PM CDT, 4 hours 24 minutes before

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Nearby

Heat Advisories in Missouri, 2023 Heat Advisories in Illinois, 2023 Every heat advisory in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.