Mississippi, 2024

Heat in Mississippi, June 23, 2024

June 23, 2024 · NWS MEG · 22 events in 22 counties and zones

An upper-level ridge prevailed across the region in late June. A cold front had stalled just to the north of the area and moisture continued to surge into the Mid-South allowing dewpoints to rise into the upper 70s and lower 80s resulting in triple-digit heat indices.

Where it happened

Every event with a place to put it; 22 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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  • 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
22

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.

An upper-level ridge prevailed across the region in late June. A cold front had stalled just to the north of the area and moisture continued to surge into the Mid-South allowing dewpoints to rise into the upper 70s and lower 80s resulting in triple-digit heat indices.

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 23, 9:13 AM CST, 1 hour 47 minutes earlier.

Area forecast discussion, Jun 23, 9:13 AM CST, 1 hour 47 minutes before
Area Forecast Discussion
National Weather Service Memphis TN
1013 AM CDT Sun Jun 23 2024

...New UPDATE...

.UPDATE...
Issued at 1005 AM CDT Sun Jun 23 2024

A weak cold front currently stretches from the Great Lakes
southwestward to Southeast Missouri/North Central Arkansas. A
broken line of showers is occurring ahead of the front from
Northwest Tennessee are East-Central Arkansas. Will update to
bump up POPS based on current coverage on radar. Expect coverage
to expand as additional thunderstorms develop as peak daytime
heating occurs. Will also bump up winds as winds are gusting a
little higher ahead of the front. Update will be out shortly.

KRM

&&

.SYNOPSIS...
Issued at 505 AM CDT Sun Jun 23 2024

An approaching weak cold front combined with a warm, moist, and
unstable airmass may result in the potential for isolated to
scattered showers and thunderstorms across portions of the Mid-
South, especially during peak daytime heating. A strong to perhaps
isolated severe thunderstorm is possible with damaging winds and
localized heavy rainfall as the main threats. This humid airmass
combined with very hot temperatures will produce heat index values
at or above 105 degrees at times through Tuesday. A cold front
will bring a better chance for showers and thunderstorms on
Wednesday with slightly cooler temperatures. A return of hot
temperatures is possible towards next weekend.

&&

.DISCUSSION...
(Today through Saturday)
Issued at 505 AM CDT Sun Jun 23 2024

GOES-16 Water Vapor satellite trends show a shortwave trough
located from the Great Lakes Region back through the Central
Plains. Latest surface analysis places a cold front from northern
Illinois to northwest Missouri and southern Kansas. Regional
WSR-88D radar trends show the trailing edge of showers and
thunderstorms just upstream of the Mid-South over portions of
southeast Missouri. Very warm and humid conditions persist ahead
of this front with temperatures ranging from the lower 70s along
the Tennessee River and middle 70s to around 80 degrees elsewhere.

Short-term models including the latest CAMs show the upstream
convection dropping into the northern third of the area this
morning and weakening as better forcing moves east into the Ohio
Valley. Model soundings indicate the potential for re-development
as convective temperatures are reached during peak heating.
Surface-based CAPE values rising to or above 2000 J/kg and around
20 kts of shear suggest a pulse-type character to any convection
that develops. Isolated to low end scattered pops seem reasonable
given the very conditional environment that will be in place
across the area. Additionally, mid-level lapse rates are expected
to be weak which may temper the overall severe weather threat to a
degree. Damaging winds will be the primary severe weather threat
if any thunderstorms can become severe. Localized heavy rainfall
will also be possible as precipitable water values rise up to
around 2 inches.

Surface dewpoints are expected to pool ahead of this front today
as temperatures rise into the 90s this afternoon. These hot
temperatures combined with high dewpoints will result in heat
index values rising at or above 105 degrees. Consequently, the
existing Heat Advisory was expanded to cover the remainder of the
Mid-South until early this evening. Additional Heat Advisories
look likely especially along and west of the Mississippi River on
Monday and across most of the Mid-South on Tuesday. Some
uncertainty exists for heat headlines on Monday east of the
Mississippi River as this front will result in slightly lower
dewpoints.

Long term operational and ensemble model trends continue to
indicate a better potential for showers and thunderstorms across
most of the Mid-South on Wednesday as a mid-level trough and
associated cold front move through the Lower Mississippi and
Tennessee Valleys. A few of these thunderstorms may have the
potential to become strong to severe as the parameter space will
be slightly better than today. Slightly cooler temperatures are
expected for late this week followed by a return of very hot
temperatures as the upper-level ridge builds back into the region
by next weekend.

CJC

&&

.AVIATION...
(12Z TAFS)
Issued at 605 AM CDT Sun Jun 23 2024

No major changes from previous TAF. Winds will be a bit gusty as a
cold front approaches MEM. Coverage of showers is very isolated
resulting in VCSH to remain at MEM and JBR. MKL has the best
chance of thunder. Guidance is a bit all over the place for winds
post-frontal, but look to remain light in speed. If skies rapidly
clear after FROPA, BR conds may develop.

DNM

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...Heat Advisory until 9 PM CDT this evening for ARZ009-018-026>028-
     035-036-048-049-058.

MO...Heat Advisory until 9 PM CDT this evening for MOZ113-115.

MS...Heat Advisory until 9 PM CDT this evening for MSZ001>017-020>024.

TN...Heat Advisory until 9 PM CDT this evening for TNZ001>004-019>022-
     048>055-088>092.

&&

PUBLIC FORECAST...KRM
AVIATION...DNM

The radar

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

Open the radar archive at this moment

Event by event

22 heat. Local standard time, as filed.

Heat, Alcorn

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Alcorn forecast zone
Reported by
AWOS
Coordinates
34.881, -88.580 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Benton

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Benton forecast zone
Reported by
AWOS
Coordinates
34.817, -89.188 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Calhoun

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Calhoun forecast zone
Reported by
AWOS
Coordinates
33.937, -89.336 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Chickasaw

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Chickasaw forecast zone
Reported by
AWOS
Coordinates
33.921, -88.948 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Coahoma

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Coahoma forecast zone
Reported by
AWOS
Coordinates
34.229, -90.603 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, De Soto

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
De Soto forecast zone
Reported by
AWOS
Coordinates
34.875, -89.992 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Itawamba

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Itawamba forecast zone
Reported by
AWOS
Coordinates
34.280, -88.361 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Lafayette

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Lafayette forecast zone
Reported by
AWOS
Coordinates
34.357, -89.485 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Lee

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Lee forecast zone
Reported by
ASOS
Coordinates
34.290, -88.680 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Marshall

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Marshall forecast zone
Reported by
AWOS
Coordinates
34.762, -89.503 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Monroe

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Monroe forecast zone
Reported by
AWOS
Coordinates
33.892, -88.480 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Panola

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Panola forecast zone
Reported by
AWOS
Coordinates
34.364, -89.951 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Pontotoc

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Pontotoc forecast zone
Reported by
AWOS
Coordinates
34.225, -89.037 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Prentiss

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Prentiss forecast zone
Reported by
AWOS
Coordinates
34.618, -88.520 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Quitman

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Quitman forecast zone
Reported by
AWOS
Coordinates
34.251, -90.289 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Tallahatchie

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Tallahatchie forecast zone
Reported by
AWOS
Coordinates
33.951, -90.173 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Tate

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Tate forecast zone
Reported by
AWOS
Coordinates
34.650, -89.945 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Tippah

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Tippah forecast zone
Reported by
AWOS
Coordinates
34.768, -88.909 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Tishomingo

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Tishomingo forecast zone
Reported by
AWOS
Coordinates
34.740, -88.239 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Tunica

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Tunica forecast zone
Reported by
AWOS
Coordinates
34.652, -90.375 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Union

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Union forecast zone
Reported by
AWOS
Coordinates
34.491, -89.004 (the zone’s center; the record gives no point)

Heat indices in excess of 105 degrees.

Heat, Yalobusha

When
June 23, 11:00 AM CST to 7:13 PM CST
Where
Yalobusha forecast zone
Reported by
AWOS
Coordinates
34.028, -89.708 (the zone’s center; the record gives no point)

Heat indices in excess of 105 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 2024Every state in 2024This day in weather historyWarnings in Mississippi, June 2024

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: 1193526, 1193527, 1193528, 1193529, 1193530, 1193531, 1193532, 1193533, 1193534, 1193535, 1193536, 1193538, 1193539, 1193540, 1193541, 1193542, 1193543, 1193544, 1193545, 1193546, 1193547, 1193548.