Mississippi, 1998

Tornadoes and Tropical Storm in Mississippi, September 19 to 20, 1998

September 19 to 20, 1998 · NWS LIX · 7 events in 5 counties and zones

A tropical depression that formed in the central Gulf of Mexico on September 17th strengthened to a minimal tropical storm named Hermine on the morning of the 18th. Tropical Storm Hermine meandered in the Gulf of Mexico for a period of time before beginning a slow north northeast motion that brought it ashore in the early morning hours of the 20th near Cocodrie, LA in Terrebonne Parish.

Where it happened

Every event with a place to put it; 2 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
1
Property damage
$170,000
Crop damage
None recorded
Events
7

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.

A tropical depression that formed in the central Gulf of Mexico on September 17th strengthened to a minimal tropical storm named Hermine on the morning of the 18th. Tropical Storm Hermine meandered in the Gulf of Mexico for a period of time before beginning a slow north northeast motion that brought it ashore in the early morning hours of the 20th near Cocodrie, LA in Terrebonne Parish. Tropical Storm Hermine then drifted north over southeast Louisiana and was downgraded to a tropical depression 50 miles northwest of New Orleans during the evening of the 20th. Winds associated with Hermine were of minimal tropical storm force and were mainly contained in squalls. A peak wind gust of 46 mph in a squall was measured just off the southeast coast of Louisiana at the Burrwood NOAA C-MAN station near the mouth of the Mississippi River at 1139 CST on September 19th.Two tornadoes developed in rainbands associated with Tropical Storm Hermine on September 20th. The first tornado occurred around 0730 CST 10 miles south of Poplarville, MS and destroyed two mobile homes, damaged seven cars, and caused one injury. A second weak tornado briefly touched down near Bay St. Louis, MS around 0850 CST resulting in only minor damage.Isolated flash flooding also occurred with Tropical Storm Hermine on September 20th when 4 to 5 inches of rain fell on areas of Walthall county. Sections of a few roadways in southern Walthall county were briefly under water including Mississippi Highway 27 which was covered by up to a foot of water in places.

The radar

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

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Event by event

4 tropical storm, 2 tornado, 1 flash flood. Local standard time, as filed.

Tropical Storm, Hancock

When
September 19, 6:00 PM CST to September 20, 3:00 PM CST
Where
Hancock forecast zone
Property damage
$10,000
Reported by
EMERGENCY MANAGER

Tropical Storm, Harrison

When
September 19, 6:00 PM CST to September 20, 3:00 PM CST
Where
Harrison forecast zone
Reported by
EMERGENCY MANAGER

Tropical Storm, Jackson

When
September 19, 6:00 PM CST to September 20, 3:00 PM CST
Where
Jackson forecast zone
Reported by
EMERGENCY MANAGER

Tropical Storm, Pearl River

When
September 19, 6:00 PM CST to September 20, 3:00 PM CST
Where
Pearl River forecast zone
Property damage
$75,000
Reported by
EMERGENCY MANAGER
Coordinates
30.769, -89.590 (the zone’s center; the record gives no point)

Tornado, Pearl River

When
September 20, 7:30 AM CST
Where
Pearl River County, 10 mi S of Poplarville
Rating
F1
Path length
0.1 mi
Path width
35 yd
Injuries
1 direct, 0 indirect
Property damage
$75,000
Reported by
LAW ENFORCEMENT
Coordinates
30.680, -89.530

Tornado, Hancock

When
September 20, 8:50 AM CST
Where
Hancock County, Bay St Louis
Rating
F0
Path length
0.1 mi
Path width
25 yd
Property damage
$10,000
Reported by
LAW ENFORCEMENT
Coordinates
30.320, -89.330

Flash Flood, Walthall

When
September 20, 9:30 AM CST to 11:30 AM CST
Where
Walthall County, South Portion
Reported by
LAW ENFORCEMENT
Coordinates
31.148, -90.106 (the zone’s center; the record gives no point)

What these are

Tropical Storm
A tropical cyclone with sustained winds of 34 to 63 knots (39 to 73 mph).
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.
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 Mississippi in 1998Every state in 1998This day in weather historyThe tornado archive for Mississippi, 1998Warnings in Mississippi, September 1998The 1998 hurricane season

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: 5670158, 5670159, 5670160, 5670164, 5670161, 5670162, 5670163.