Heat in Louisiana, August 1 to 31, 2023

Name: Heat in Louisiana, August 1 to 31, 2023
Start: 2023-08-01T00:00
End: 2023-08-31T23:59
Location: Louisiana

August 1 to 31, 2023 · NWS LCH · 22 events in 22 counties and zones

A historic heat wave was observed across much of the deep south during the month of August. Most climate sites tied or broke streaks of 100 degree days and all sites set all time highs.

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.

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: 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 LCH wrote it up.

A historic heat wave was observed across much of the deep south during the month of August. Most climate sites tied or broke streaks of 100 degree days and all sites set all time highs. Apparent temperatures each afternoon for the month reached over 105 degrees with most afternoons rising into the 110 to 120 degree Fahrenheit range. Numerous deaths are suspected across Louisiana due to heat stress. The very hot and dry conditions aggravated the already dry conditions pushing much of the region into an exceptional drought. Multiple wildfires began during the middle of the month as a result. The largest and longest lasting of the wildfires was the Tiger Island Wildfire in Beauregard Parish which burned over 31,000 acres of pine forest across an area with many downed trees from Hurricane Laura.

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 Lake Charles, LA wrote its last area forecast discussion before the first event at Jul 31, 9:08 PM CST, 2 hours 52 minutes earlier.

Area forecast discussion, Jul 31, 9:08 PM CST, 2 hours 52 minutes before

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Hazardous weather outlook, Jul 31, 1:31 PM CST, 10 hours 29 minutes before

Hazardous Weather Outlook
National Weather Service Lake Charles LA
231 PM CDT Mon Jul 31 2023

LAZ027>033-044-045-055-073-074-141>143-152>154-241>243-252>254-
TXZ201-261-262-515-516-615-616-011945-
Vernon-Rapides-Avoyelles-Beauregard-Allen-Evangeline-St. Landry-
Lafayette-Upper St. Martin-Lower St. Martin-West Cameron-
East Cameron-Northern Calcasieu-Northern Jefferson Davis-
Northern Acadia-Upper Vermilion-Upper Iberia-Upper St. Mary-
Southern Calcasieu-Southern Jefferson Davis-Southern Acadia-
Lower Vermilion-Lower Iberia-Lower St. Mary-Hardin-Southern Jasper-
Southern Newton-Upper Jefferson-Northern Orange-Lower Jefferson-
Southern Orange-
231 PM CDT Mon Jul 31 2023

...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TO 7 PM CDT TUESDAY...
...EXCESSIVE HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

This Hazardous Weather Outlook is for central Louisiana, south
central Louisiana, southwest Louisiana, west central Louisiana and
southeast Texas.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

Max temperatures between 105 and 108 degrees combined with dewpoints
in the upper 60s or lower 70s will lead to heat index values peaking
between 110 and 115 degrees across the area this afternoon.

A few showers or thunderstorms are possible, with a Marginal Risk
(level 1 of 5) for severe weather. The main threat will be damaging
wind gusts.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Excessive Heat Warning.
   Excessive Heat Watch.

Our heat wave will continue over the region through the coming work
week with heat index values ranging from 105 to 115 degrees each
afternoon...expect additional heat advisories.

Isolated to scattered thunderstorms will develop each day next week.
No severe weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

TXZ180-259-260-011945-
Tyler-Northern Jasper-Northern Newton-
231 PM CDT Mon Jul 31 2023

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TO 7 PM CDT TUESDAY...
...EXCESSIVE HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...

This Hazardous Weather Outlook is for southeast Texas.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Excessive Heat Warning.

Max temperatures between 105 and 108 degrees combined with dewpoints
in the upper 60s or lower 70s will lead to heat index values peaking
between 110 and 115 degrees across the area this afternoon.

A few showers or thunderstorms are possible, with a Marginal Risk
(level 1 of 5) for severe weather. The main threat will be damaging
wind gusts.

It is strongly advised to stay alert to the forecast for potential
upgrades to an Excessive Heat Warning across the rest of the area
today!

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Excessive Heat Warning.
   Excessive Heat Watch.

Our heat wave will continue over the region through the coming work
week with heat index values ranging from 105 to 115 degrees each
afternoon...expect additional heat advisories.

Isolated to scattered thunderstorms will develop each day next week.
No severe weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ430-432-435-436-450-452-455-470-472-475-011945-
Sabine Lake-Calcasieu Lake-Vermilion and West Cote Blanche Bays-
Atchafalaya and East Cote Blanche Bays-
Coastal waters from Cameron LA to High Island TX out 20 NM-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
Coastal waters from Lower Atchafalaya River to Intracoastal City LA
out 20 NM-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM-
Coastal waters from Lower Atchafalaya River to Intracoastal City LA
from 20 to 60 NM-
231 PM CDT Mon Jul 31 2023

This Hazardous Weather Outlook is for the Gulf of Mexico and the
coastal lakes and bays of the Gulf of Mexico.

.DAY ONE...This afternoon and tonight.

Isolated showers and thunderstorms will be possible. No severe
weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Isolated to scattered thunderstorms will develop each day next week.
No severe weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 31, 7:30 PM CST, 4 hours 30 minutes before

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Local storm report, Jul 31, 7:54 PM CST, 4 hours 6 minutes before

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Local storm report, Jul 31, 7:56 PM CST, 4 hours 4 minutes before

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Local storm report, Jul 31, 7:57 PM CST, 4 hours 3 minutes before

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Special weather statement, Jul 31, 8:01 PM CST, 3 hours 59 minutes before

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Special weather statement, Jul 31, 8:25 PM CST, 3 hours 35 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

22 heat. Local standard time, as filed.

Heat, Southern Calcasieu Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Southern Calcasieu Parish forecast zone
Reported by: ASOS
Coordinates: 30.229, -93.358 (the zone’s center; the record gives no point)

The average temperature at Lake Charles during the month of August was 89.2 which broke the old record of 87.0 set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. Lake Charles also experienced the 5th driest August ever recorded. Calcasieu Parish and greater Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, Allen

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Allen forecast zone
Reported by: AWOS
Coordinates: 30.653, -92.828 (the zone’s center; the record gives no point)

The average temperature at Lake Charles during the month of August was 89.2F which broke the old record of 87.0F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. Oakdale also hit 109 degrees during the afternoon of the 27th. Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, Northern Calcasieu Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Northern Calcasieu Parish forecast zone
Reported by: ASOS
Coordinates: 30.229, -93.358 (the zone’s center; the record gives no point)

The average temperature at Lake Charles during the month of August was 89.2F which broke the old record of 87.0F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. Lake Charles also experienced the 5th driest August ever recorded. Calcasieu Parish and greater Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, Avoyelles

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Avoyelles forecast zone
Reported by: ASOS
Coordinates: 31.076, -92.001 (the zone’s center; the record gives no point)

The average temperature at nearby Alexandria during the month of August was 91.4F which broke the old record of 87.7F set in 2011. The hottest temperature during the month was 110F on the 19th and 24th which was the hottest temperature ever recorded. Central Louisiana was under an excessive heat warning for 22 days of the month and only went without any heat products for 4 days of the month, the only 4 days when the actual temperature failed to reach 100F or more.

Heat, Rapides

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Rapides forecast zone
Reported by: ASOS
Coordinates: 31.199, -92.533 (the zone’s center; the record gives no point)

The average temperature at Alexandria during the month of August was 91.4F which broke the old record of 87.7F set in 2011. The hottest temperature during the month was 110F on the 19th and 24th which was the hottest temperature ever recorded. Daily records were set on 20 days. Alexandria also experienced the driest month ever recorded. Central Louisiana was under an excessive heat warning for 22 days of the month and only went without any heat products for 4 days of the month, the only 4 days when the actual temperature failed to reach 100F or more.

Heat, Beauregard

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Beauregard forecast zone
Reported by: AWOS
Coordinates: 30.649, -93.343 (the zone’s center; the record gives no point)

The average temperature at nearby Lake Charles during the month of August was 89.2F which broke the old record of 87.0F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. DeRidder also hit 109F on the 27th. Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, East Cameron

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: East Cameron forecast zone
Reported by: ASOS
Coordinates: 29.847, -93.199 (the zone’s center; the record gives no point)

The average temperature at nearby Lake Charles during the month of August was 89.2F which broke the old record of 87.0F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, West Cameron

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: West Cameron forecast zone
Reported by: ASOS
Coordinates: 29.847, -93.199 (the zone’s center; the record gives no point)

The average temperature at nearby Lake Charles during the month of August was 89.2F which broke the old record of 87.0F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, Northern Jefferson Davis Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Northern Jefferson Davis Parish forecast zone
Reported by: AWOS
Coordinates: 30.268, -92.814 (the zone’s center; the record gives no point)

The average temperature at nearby Lake Charles during the month of August was 89.2F which broke the old record of 87.0F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. Jennings hit 110F on the 19th, and Jennings and Lake Arthur hit 107F and 106F respectively on the 27th. Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, Southern Jefferson Davis Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Southern Jefferson Davis Parish forecast zone
Reported by: AWOS
Coordinates: 30.268, -92.814 (the zone’s center; the record gives no point)

The average temperature at nearby Lake Charles during the month of August was 89.2F which broke the old record of 87.0F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the all time high record of 107F set on August 31, 2000. Jennings hit 110F on the 19th, and Jennings and Lake Arthur hit 107F and 106F respectively on the 27th. Southwest Louisiana was under an excessive heat warning for 14 days of the month and only went without any heat products for 4 days of the month.

Heat, Vernon

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Vernon forecast zone
Reported by: ASOS
Coordinates: 31.108, -93.184 (the zone’s center; the record gives no point)

The average temperature at nearby Alexandria during the month of August was 91.4F which broke the old record of 87.7F set in 2011. The hottest temperature during the month was 110F on the 19th and 24th which was the hottest temperature ever recorded. Leesville hit 109F on the 24th. Central Louisiana was under an excessive heat warning for 22 days of the month and only went without any heat products for 4 days of the month, the only 4 days when the actual temperature failed to reach 100F or more.

Heat, Lafayette

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Lafayette forecast zone
Reported by: ASOS
Coordinates: 30.207, -92.064 (the zone’s center; the record gives no point)

The average temperature at Lafayette during the month of August was 90.3F which broke the old record of 87.1F set in 2011. The hottest temperature during the month was 110F on the 27th which broke the previous all time high record of 107F set on July 13, 1901. Lafayette also experienced the 7th driest August ever recorded. Lafayette Parish and greater Acadiana was under an excessive heat warning for 18 days of the month and only went without any heat product for 4 days of the month.

Heat, St. Landry

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: St. Landry forecast zone
Reported by: AWOS
Coordinates: 30.599, -92.006 (the zone’s center; the record gives no point)

The average temperature at nearby Lafayette during the month of August was 90.3F which broke the old record of 87.1F set in 2011. The hottest temperature during the month was 110F on the 27th which broke the previous all time high record of 107F set on July 13, 1901. Acadiana was under an excessive heat warning for 18 days of the month and only went without any heat product for 4 days of the month.

Heat, Evangeline

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Evangeline forecast zone
Reported by: AWOS
Coordinates: 30.729, -92.406 (the zone’s center; the record gives no point)

Heat, Upper St. Martin

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Upper St. Martin forecast zone
Reported by: ASOS
Coordinates: 30.129, -91.608 (the zone’s center; the record gives no point)

Heat, Upper Iberia Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Upper Iberia Parish forecast zone
Reported by: ASOS
Coordinates: 29.514, -91.840 (the zone’s center; the record gives no point)

The average temperature at New Iberia during the month of August was 89.5F which broke the old record of 86.6F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the previous all time high record of 106F just set on the 26th. New Iberia also experienced the driest August ever recorded. Acadiana was under an excessive heat warning for 18 days of the month and only went without any heat product for 4 days of the month.

Heat, Lower Iberia Parish

When: August 1, 12:00 AM CST to 11:59 PM CST
Where: Lower Iberia Parish forecast zone
Reported by: ASOS
Coordinates: 29.514, -91.840 (the zone’s center; the record gives no point)

Heat, Lower Vermilion Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Lower Vermilion Parish forecast zone
Reported by: ASOS
Coordinates: 29.809, -92.304 (the zone’s center; the record gives no point)

The average temperature at nearby New Iberia during the month of August was 89.5F which broke the old record of 86.6F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the previous all time high record of 106F just set on the 26th. Acadiana was under an excessive heat warning for 18 days of the month and only went without any heat product for 4 days of the month.

Heat, Upper Vermilion Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Upper Vermilion Parish forecast zone
Reported by: ASOS
Coordinates: 29.809, -92.304 (the zone’s center; the record gives no point)

Heat, Lower St. Martin

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Lower St. Martin forecast zone
Reported by: ASOS
Coordinates: 30.129, -91.608 (the zone’s center; the record gives no point)

Heat, Lower St. Mary Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Lower St. Mary Parish forecast zone
Reported by: ASOS
Coordinates: 29.635, -91.473 (the zone’s center; the record gives no point)

The average temperature at nearby New Iberia during the month of August was 89.5F which broke the old record of 86.6F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the previous all time high record of 106F just set on the 26th. Jeanerette hit 105F on the 27th. Acadiana was under an excessive heat warning for 18 days of the month and only went without any heat product for 4 days of the month.

Heat, Upper St. Mary Parish

When: August 1, 12:00 AM CST to August 31, 11:59 PM CST
Where: Upper St. Mary Parish forecast zone
Reported by: ASOS
Coordinates: 29.635, -91.473 (the zone’s center; the record gives no point)

The average temperature at nearby New Iberia during the month of August was 89.5F which broke the old record of 86.6F set in 2011. The hottest temperature during the month was 109F on the 27th which broke the previous all time high record of 106F just set on the 26th. Jeanerette hit 105F on the 27th. Acadiana was under an excessive heat warning for 18 days of the month and only went without any heat product for 4 days of the month.

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

Every storm in Louisiana in 2023 Every state in 2023 This day in weather history Warnings in Louisiana, August 2023

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: 1134606, 1134665, 1134666, 1134669, 1134670, 1134673, 1134676, 1134678, 1134680, 1134681, 1134682, 1134683, 1134685, 1134686, 1134687, 1134688, 1134689, 1134690, 1134691, 1134692, 1134693, 1134694.