Mississippi, 2017

Excessive Heat and Heat in Mississippi, July 20 to 23, 2017

July 20 to 23, 2017 · NWS MEG · 9 events in 8 counties and zones

Upper level high pressure built over the Mid-South from mid to late July. High temperatures combined with high humidity to create dangerous conditions across much of the Mid-South.

Where it happened

Every event with a place to put it; 9 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
9

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 MEG wrote it up.

Upper level high pressure built over the Mid-South from mid to late July. High temperatures combined with high humidity to create dangerous conditions across much of the Mid-South.

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 Memphis, TN wrote its last area forecast discussion before the first event at Jul 20, 11:34 AM CST, 26 minutes earlier.

Area forecast discussion, Jul 20, 11:34 AM CST, 26 minutes before
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Hazardous weather outlook, Jul 20, 3:27 AM CST, 8 hours 33 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

8 heat, 1 excessive heat. Local standard time, as filed.

Heat, Coahoma

When
July 20, 12:00 PM CST to July 23, 5:00 PM CST
Where
Coahoma forecast zone
Reported by
ASOS
Coordinates
34.229, -90.603 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Heat, Tunica

When
July 20, 12:00 PM CST to July 23, 5:00 PM CST
Where
Tunica forecast zone
Reported by
ASOS
Coordinates
34.652, -90.375 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Heat, Quitman

When
July 20, 12:00 PM CST to July 23, 5:00 PM CST
Where
Quitman forecast zone
Reported by
ASOS
Coordinates
34.251, -90.289 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Heat, Tate

When
July 20, 12:00 PM CST to July 23, 5:00 PM CST
Where
Tate forecast zone
Reported by
ASOS
Coordinates
34.650, -89.945 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Heat, Panola

When
July 20, 12:00 PM CST to July 23, 5:00 PM CST
Where
Panola forecast zone
Reported by
ASOS
Coordinates
34.364, -89.951 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Heat, Tallahatchie

When
July 20, 12:00 PM CST to July 23, 5:00 PM CST
Where
Tallahatchie forecast zone
Reported by
ASOS
Coordinates
33.951, -90.173 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Heat, Marshall

When
July 20, 12:00 PM CST to July 23, 5:00 PM CST
Where
Marshall forecast zone
Reported by
ASOS
Coordinates
34.762, -89.503 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Heat, De Soto

When
July 20, 12:00 PM CST to July 21, 12:00 PM CST
Where
De Soto forecast zone
Reported by
ASOS
Coordinates
34.875, -89.992 (the zone’s center; the record gives no point)

Heat index values climbed above 105 degrees.

Excessive Heat, De Soto

When
July 21, 12:00 PM CST to July 23, 5:00 PM CST
Where
De Soto forecast zone
Reported by
ASOS
Coordinates
34.875, -89.992 (the zone’s center; the record gives no point)

Heat index values climbed above 110 degrees.

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
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 Mississippi in 2017Every state in 2017This day in weather historyWarnings in Mississippi, 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 2026-10-01. Each event’s entry at NCEI: 712664, 712665, 712666, 712667, 712668, 712669, 712670, 712671, 712672.