Mississippi, 2025

Heat in Mississippi, June 20, 2025

June 20, 2025 · NWS MEG · 4 events in 4 counties and zones

The first heat wave of 2025 started on June 20, 2025, as an upper-level ridge amplified into the Lower Mississippi Valley. High temperatures climbed into the 90s areawide, with the highest heat indices focused along the Mississippi River.

Where it happened

Every event with a place to put it; 4 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
4

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.

The first heat wave of 2025 started on June 20, 2025, as an upper-level ridge amplified into the Lower Mississippi Valley. High temperatures climbed into the 90s areawide, with the highest heat indices focused along the Mississippi River.

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 Jun 19, 5:34 PM CST, 16 hours 26 minutes earlier.

Area forecast discussion, Jun 19, 5:34 PM CST, 16 hours 26 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

4 heat. Local standard time, as filed.

Heat, Tunica

When
June 20, 10:00 AM CST to 7:00 PM CST
Where
Tunica forecast zone
Reported by
AWOS
Coordinates
34.652, -90.375 (the zone’s center; the record gives no point)

AWOS reported a maximum heat index of 109 degrees.

Heat, Coahoma

When
June 20, 10:00 AM CST to 7:00 PM CST
Where
Coahoma forecast zone
Reported by
AWOS
Coordinates
34.229, -90.603 (the zone’s center; the record gives no point)

AWOS reported a maximum heat index of 108 degrees.

Heat, Quitman

When
June 20, 10:00 AM CST to 7:00 PM CST
Where
Quitman forecast zone
Reported by
AWOS
Coordinates
34.251, -90.289 (the zone’s center; the record gives no point)

AWOS reported a maximum heat index of 108 degrees.

Heat, Tallahatchie

When
June 20, 10:00 AM CST to 7:00 PM CST
Where
Tallahatchie forecast zone
Reported by
AWOS
Coordinates
33.951, -90.173 (the zone’s center; the record gives no point)

AWOS reported a maximum heat index of 108 degrees.

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

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

The same day elsewhere

More

Every storm in Mississippi in 2025Every state in 2025This day in weather historyWarnings in Mississippi, June 2025

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: 1274760, 1274761, 1274762, 1274763.