Louisiana, 2020

Heat in Louisiana, September 1 to 2, 2020

September 1 to 2, 2020 · NWS SHV · 6 events in 6 counties and zones

Hot and humid conditions continued from the final day in August through the first couple days of September, with temperatures climbing into the lower and mid 90s across North Louisiana. Oppressively high dewpoints in the mid to upper 70s in wake of a warm frontal passage on August 31st shifted back north across much of East Texas and North Louisiana, which when combined with the very hot…

Where it happened

Every event with a place to put it; 6 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
6

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 SHV wrote it up.

Hot and humid conditions continued from the final day in August through the first couple days of September, with temperatures climbing into the lower and mid 90s across North Louisiana. Oppressively high dewpoints in the mid to upper 70s in wake of a warm frontal passage on August 31st shifted back north across much of East Texas and North Louisiana, which when combined with the very hot temperatures, resulted in heat indices ranging from 100-110 degrees across these areas. This was brief though before scattered showers and thunderstorms and associated cloud cover ahead of a closed upper low pressure system over the Four Corners Region affected portions of North Louisiana on the 3rd, resulting in slightly cooler conditions with lower heat indices. Due to the extensive power outages across much of Northwest Louisiana in wake of Laura, the NWS Shreveport Heat Advisory criteria was temporarily lowered to heat indices greater than or equal to 100 degrees for parishes where at least 10% of the parish was without power in wake of 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 Shreveport, LA wrote its last area forecast discussion before the first event at Aug 31, 9:27 PM CST, 2 hours 33 minutes earlier.

Area forecast discussion, Aug 31, 9:27 PM CST, 2 hours 33 minutes before
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In the hours before

Special weather statement, Aug 31, 6:35 PM CST, 5 hours 25 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

6 heat. Local standard time, as filed.

Heat, Bienville

When
September 1, 12:00 AM CST to September 2, 6:00 PM CST
Where
Bienville forecast zone
Reported by
ASOS
Coordinates
32.347, -93.056 (the zone’s center; the record gives no point)

Heat, Lincoln

When
September 1, 12:00 AM CST to September 2, 6:00 PM CST
Where
Lincoln forecast zone
Reported by
ASOS
Coordinates
32.602, -92.665 (the zone’s center; the record gives no point)

Heat, Union

When
September 1, 12:00 AM CST to September 2, 6:00 PM CST
Where
Union forecast zone
Reported by
ASOS
Coordinates
32.832, -92.375 (the zone’s center; the record gives no point)

Heat, Ouachita

When
September 1, 12:00 AM CST to September 2, 6:00 PM CST
Where
Ouachita forecast zone
Reported by
ASOS
Coordinates
32.478, -92.155 (the zone’s center; the record gives no point)

Heat, Jackson

When
September 1, 12:00 AM CST to September 2, 6:00 PM CST
Where
Jackson forecast zone
Reported by
ASOS
Coordinates
32.302, -92.558 (the zone’s center; the record gives no point)

Heat, Caldwell

When
September 1, 12:00 AM CST to September 2, 6:00 PM CST
Where
Caldwell forecast zone
Reported by
ASOS
Coordinates
32.092, -92.117 (the zone’s center; the record gives no point)

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 Louisiana in 2020Every state in 2020This day in weather historyWarnings in Louisiana, September 2020

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: 911484, 911485, 911486, 911487, 911488, 911489.