Mesoscale Discussion 243

Issued

Mar 15, 2026, 12:23 PM CDT (17:23 UTC)

Expired

Mar 15, 2026, 2:30 PM CDT

In force

2 hr

Issued by

the Storm Prediction Center

Concerning

Severe potential...tornado watch likely

Chance of a watch

80%

The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 17:27 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.

• Tornado Watch 52Mar 15, 1:30 PM CDT
• Tornado Watch 54Mar 15, 3:45 PM CDT
• Tornado Watch 55Mar 15, 3:55 PM CDT

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Mesoscale Discussions in Missouri, 2026Mesoscale Discussions in Illinois, 2026Every mesoscale discussion in 2026

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.