Missouri, 2017

Excessive Heat in Missouri, July 20 to 23, 2017

July 20 to 23, 2017 · NWS PAH · 11 events in 11 counties and zones

A large upper-level high resulted in three to four consecutive days of dangerously high heat indices from 105 to 115 degrees. The large high in the upper levels of the atmosphere expanded over much of the southern two-thirds of the United States for several days.

Where it happened

Every event with a place to put it; 11 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
11

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 PAH wrote it up.

A large upper-level high resulted in three to four consecutive days of dangerously high heat indices from 105 to 115 degrees. The large high in the upper levels of the atmosphere expanded over much of the southern two-thirds of the United States for several days. The center of the high gradually shifted east from the southern Plains on the 20th to the middle Mississippi Valley on the 22nd. The high then weakened and shrank on the 23rd. The daily peak heat indices at the Poplar Bluff airport during the heat wave were 109 degrees on the 20th, 110 degrees on the 21st, 109 degrees on the 22nd, and 105 on the 23rd. Actual air temperatures reached the mid 90's each afternoon. Overnight lows were mainly in the mid 70's. About a dozen cooling centers were opened to accomodate residents needing help. These cooling centers were mainly in the Poplar Bluff area. The outdoor Farmer's Market in Cape Girardeau closed early due to the heat.

The radar

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

Open the radar archive at this moment

Event by event

11 excessive heat. Local standard time, as filed.

Excessive Heat, Bollinger

When
July 20, 11:00 AM CST to July 22, 5:00 PM CST
Where
Bollinger forecast zone
Reported by
Mesonet
Coordinates
37.322, -90.026 (the zone’s center; the record gives no point)

Excessive Heat, Butler

When
July 20, 11:00 AM CST to July 23, 5:00 PM CST
Where
Butler forecast zone
Reported by
ASOS
Coordinates
36.716, -90.407 (the zone’s center; the record gives no point)

Excessive Heat, Cape Girardeau

When
July 20, 11:00 AM CST to July 22, 5:00 PM CST
Where
Cape Girardeau forecast zone
Reported by
ASOS
Coordinates
37.384, -89.684 (the zone’s center; the record gives no point)

Excessive Heat, Carter

When
July 20, 11:00 AM CST to July 22, 5:00 PM CST
Where
Carter forecast zone
Reported by
Mesonet
Coordinates
36.941, -90.962 (the zone’s center; the record gives no point)

Excessive Heat, Mississippi

When
July 20, 11:00 AM CST to July 23, 5:00 PM CST
Where
Mississippi forecast zone
Reported by
Mesonet
Coordinates
36.828, -89.291 (the zone’s center; the record gives no point)

Excessive Heat, New Madrid

When
July 20, 11:00 AM CST to July 23, 5:00 PM CST
Where
New Madrid forecast zone
Reported by
Mesonet
Coordinates
36.595, -89.652 (the zone’s center; the record gives no point)

Excessive Heat, Perry

When
July 20, 11:00 AM CST to July 22, 5:00 PM CST
Where
Perry forecast zone
Reported by
Mesonet
Coordinates
37.707, -89.824 (the zone’s center; the record gives no point)

Excessive Heat, Ripley

When
July 20, 11:00 AM CST to July 23, 5:00 PM CST
Where
Ripley forecast zone
Reported by
Mesonet
Coordinates
36.653, -90.864 (the zone’s center; the record gives no point)

Excessive Heat, Scott

When
July 20, 11:00 AM CST to July 22, 5:00 PM CST
Where
Scott forecast zone
Reported by
Mesonet
Coordinates
37.053, -89.568 (the zone’s center; the record gives no point)

Excessive Heat, Stoddard

When
July 20, 11:00 AM CST to July 23, 5:00 PM CST
Where
Stoddard forecast zone
Reported by
Mesonet
Coordinates
36.856, -89.944 (the zone’s center; the record gives no point)

Excessive Heat, Wayne

When
July 20, 11:00 AM CST to July 22, 5:00 PM CST
Where
Wayne forecast zone
Reported by
Mesonet
Coordinates
37.113, -90.461 (the zone’s center; the record gives no point)

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

More

Every storm in Missouri in 2017Every state in 2017This day in weather historyWarnings in Missouri, July 2017

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 2026-09-24. Each event’s entry at NCEI: 706770, 706771, 706772, 706773, 706775, 706776, 706777, 706778, 706780, 706781, 706782.