Louisiana, 2020

Tornadoes and Flash Flood in Louisiana, June 24, 2020

June 24, 2020 · NWS LIX · 5 events in 4 counties and zones

Two mesoscale cycloncic vortex systems (MCVs) produced several severe thunderstorms across the area from early morning through the mid afternoon hours of Wednesday June 24, 2020. There were several tornadoes reported with these severe thunderstorms as they moved across the area.

Where it happened

Every event with a place to put it. 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
$265,000
Crop damage
None recorded
Events
5

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 LIX wrote it up.

Two mesoscale cycloncic vortex systems (MCVs) produced several severe thunderstorms across the area from early morning through the mid afternoon hours of Wednesday June 24, 2020. There were several tornadoes reported with these severe thunderstorms as they moved across the area. The most significant tornadoes impacted the Baton Rouge area, the Salem area of Walthall County, and the Mississippi Gulf Coast.

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 New Orleans, LA wrote its last area forecast discussion before the first event at Jun 24, 3:04 AM CST, 1 hour 46 minutes earlier.

Area forecast discussion, Jun 24, 3:04 AM CST, 1 hour 46 minutes before
Area Forecast Discussion
National Weather Service New Orleans LA
404 AM CDT Wed Jun 24 2020

.SHORT TERM...
Deep tropical moisture, with PW values north of 2", continues to
stream over the area this morning. And this does not look to stop
through at least Thu. Taking a look at vectors, mass fields and the
hodo, there is very good evidence that the environment is very
supportive of training thunderstorms starting now thourgh roughly
11am today. Afterwards, these paramaters fall out of favor for this
scenario and all activity becomes more progressive and transitory.

A weak sfc low will set up today near the Houston area. Upper level
disturbances will be connected with sfc variables provided by the
weakness the sfc gives to keep sh/ts moving through the area into at
least Thu. The sfc low will pull out Thu bringing rain chances a bit
lower but definitely not shutting down the water works. Activity may
simply take a bit longer to get started with daytime heating. Some
of the stronger thunderstorms could cause some damaging straight
line winds. As normal during tropical environments, waterspouts and
a weak tornado will remain a possibility. But the main thing to look
for is the potential for flooding rainfall. This is still expected
to be localized and the most prominant thing would be streets and
low lying areas that normally flood during heavy rainfall.

Eventhough, each day will bring a chance of rain into next week. The
activity may take longer to get started and allow a few areas to dry
out each day. A slow progression to lower precip chances will occur
into mid next week.

&&

.AVIATION...
Some sites are expected to have prevailing showers and tempo TS
starting again during the pre 12z hour. All sites will eventually
have these conditions at some point during the morning. This should
be ongoing through the day once again. This activity will bring at
least IFR conditions with a few LIFR possible as +TSRA move
overhead. Outside the sh/ts VFR will be noted at each terminal but
should not last long as the majority of the day will be -SHRA and
TSRA at most terminals. A lull in activity once again overnight only
to give way to more of these same conditions for Thu.

&&

.MARINE...
Onshore wind speeds will continue to fluctuate between around 10kt
during the day and 15kt during the night. Nocturnal sh/ts numbers
will continue to be high each night for the next few nights. Winds
and seas will be higher in and around this activity. The evironment
will remain conducive for waterspouts as well and some of these
could be found in the nearshore waters and lakes mainly during the
morning hours.

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  84  72  84  73 / 100  60  80  10
BTR  83  72  83  74 / 100  50  70  10
ASD  87  72  87  74 / 100  40  60  10
MSY  86  76  87  78 / 100  40  60  10
GPT  85  75  86  77 /  90  30  50  10
PQL  88  73  88  74 /  80  30  50  10

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...None.
GM...None.
MS...None.
GM...None.
&&

The radar

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

Open the radar archive at this moment

Event by event

3 tornado, 1 thunderstorm wind, 1 flash flood. Local standard time, as filed.

Tornado, East Baton Rouge

When
June 24, 4:50 AM CST to 5:05 AM CST
Where
East Baton Rouge County, 0.34 mi N of Essen to 1.05 mi ENE of Cedar Crest
Rating
EF1
Path length
3.54 mi
Path width
100 yd
Property damage
$100,000
Reported by
NWS Storm Survey
Coordinates
30.405, -91.100

A National Weather Service Damage Assessment Team has surveyed the storm damage in Baton Rouge, LA. It has been determined the damage was the result of a tornado. The tornado has been rated an EF-1 on the Enhanced Fujita Scale. Damage estimates were consistent with winds of 110 mph.

The tornado first touched down near Essen Park Avenue, just south of the Interstate 10 near Essen Lane. It produced minor roof damage to the Fairfield Inn, snapped a few smaller trees and knocked down a light pole. The tornado rapidly intensified, producing significantly more damage just moments later. As the tornado reached two Ammon Staffing buildings, it downed fencing, peeled the northern side metal roof of, and blew out a window on the east side of the building. Of the two buildings, the western one was damaged the most. More than half its flat roof was ripped off or collapsed. There was a partial collapse of the southwest exterior wall on the second story. It is suspected that a large limb or some other object hit that corner of the building, which could have aided in the lifting of the roof. No roof straps were seen during the survey. The tornado also damaged the roof of a building just to the east of the Ammon Staffing Buildings. Only the center section of the roof was removed and the rafters actually remained intact. Based on the overall damage of these 3 buildings, a peak wind speed of 110 mph was given at this point which was the strongest point of the tornado's track. These winds carried over into those building's parking lot to carry debris and, based on tire slide marks, may have pushed a vehicle through a chain link fence to the interstate on-ramp.

The tornado the crossed Interstate 10. On the north side of the interstate, it downed smaller trees, ripped off some vinyl siding and damaged the roof slightly. The tornado continued northeastward, downing several large trees and powerlines along Essen Heights Ct. The tornado then moved through Westminster, downing multiple trees across several streets. As the tornado passed over Westminster Elementary School, it damaged the school sign and ripped skirting of modular classrooms. The strength of the tornado would generally only weaken from this point onward. Tree damage persisted along a path through the I-12 and Airline Highway intersection. Minor commercial building window damage was noted near the Costco. The last few points of damage were just east-northeast of this location through Cedarcrest Avenue and finally Old Hammond Highway just east of Sherwood Blvd.

Tornado, East Baton Rouge

When
June 24, 5:25 AM CST to 5:28 AM CST
Where
East Baton Rouge County, 0.32 mi WNW of Indian Mound to 0.27 mi N of Indian Mound
Rating
EF1
Path length
0.33 mi
Path width
125 yd
Property damage
$50,000
Reported by
NWS Storm Survey
Coordinates
30.602, -91.005

A National Weather Service Damage Assessment Team has surveyed the storm damage in Greenwell Springs, LA. It has been determined the damage was the result of a tornado. The tornado has been rated an EF-1 on the Enhanced Fujita Scale. Damage estimates were consistent with winds of 90 mph.

This tornado touched near Yatasi Ave., snapping and uprooting trees. Trees landed and damaged 2 cars. It then progressed in a northeast direction where it damaged the carport and fascia of some nearby houses. It then lifted just before Greenwell Springs-Port Hudson Rd.

Thunderstorm Wind, Tangipahoa

When
June 24, 5:25 AM CST to 5:26 AM CST
Where
Tangipahoa County, 3.28 mi WNW of Independence
Measured
50 kt (58 mph) estimated gust
Reported by
State Official
Coordinates
30.650, -90.550

Damaging thunderstorm winds downed multiple trees.

Tornado, West Baton Rouge

When
June 24, 1:30 PM CST to 1:35 PM CST
Where
West Baton Rouge County, 1.93 mi W of Arbroth to 1.23 mi W of Arbroth
Rating
EF0
Path length
0.7 mi
Path width
75 yd
Property damage
$15,000
Reported by
NWS Storm Survey
Coordinates
30.600, -91.352

A National Weather Service Damage Assessment Team has surveyed the storm damage near Erwinville, LA. It has been determined the damage was the result of a tornado. The tornado has been rated an EF-0 on the Enhanced Fujita Scale. Damage estimates were consistent with winds of 85 mph.

The tornado touched down just west of Bueche Rd, tearing some siding of of a house. In addition, the roof of a garage building was damaged from trees. It also uprooted trees and snapped tree limbs as it progressed in an eastward direction. It lifted on Bueche Rd. just short o Clause Bayou. It is possible that the tornado started and ended before and after the stated locations, but these areas were inaccessible or were surrounded by fields.

Flash Flood, Terrebonne

When
June 24, 4:00 PM CST to 4:01 PM CST
Where
Terrebonne County, 1.39 mi ESE of Houma to 1.46 mi SSW of Houma
Cause
Heavy Rain
Property damage
$100,000
Reported by
Emergency Manager
Coordinates
29.590, -90.700

Terrebonne Parish emergency manager reported water covering roads as well as water entering homes.

What these are

Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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 historyThe tornado archive for Louisiana, 2020Warnings in Louisiana, June 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 2026-09-24. Each event’s entry at NCEI: 899288, 899291, 899295, 899296, 899302.