National Weather Service United States Department of Commerce

Stormy Western U.S.

An active and complex weather pattern is in store this weekend through next week, as multiple storms track from West Coast to East Coast. The activity starts today as a vigorous system moves through north-central California into the Intermountain West with rain, perhaps a few thunderstorms and heavy mountain snow. This system will move into the Upper Midwest tomorrow with a swath of heavy snow. Read More >

August 30, 2017 'Harvey' Tornadoes

 

Tornado Track Map

 

Track Map

 


 

Local Storm Reports
Click on the map for additional details.

Local Storm Reports
Storm Reports Key

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Click on the location in the table for additional maps and details below.

Location Start/
End Time
Event Type Fatalities/
Injuries
Path Length Path Width
Lamar County
7 W Purvis to 8 WNW Purvis
10:04 AM -
10:07 AM
EF-1 Tornado
105 mph
none 1.71 miles 100 yards
Forrest County
1 W Petal to 2 NW Petal
11:41 AM -
11:45 AM
EF-1 Tornado
90 mph
none 1.26 miles 160 yards
Jefferson Davis County
5 N Bassfield to 6 N Bassfield
12:35 PM -
12:37 PM
EF-0 Tornado
80 mph
none 1.08 miles 50 yards

 


 

Central Lamar County EF-1 Tornado

 

Click on map above to see entire damage point notation and damage pictures at select points.

 

Track Summary

This tornado touched down in a wooded area just north of Purvis to Columbia Road, near the intersection of B Young Road. The tornado tracked through an area with fairly young, long leaf pines (10-20ft tall) and managed to uproot/snap several near the trail where the property was accessed. As the tornado crossed the transmission line clearing, several more trees were damaged along with a V based truss tower taken down. Information from the power crew engineers noted that these sort of V truss towers are rated for 100 mph winds. The collapse of this tower, with 100 mph winds, was supported by similar tree damage in and around that location. A TDS from both KLIX/KDGX was noted with a well defined signature. Of note, the presence of the clear TDS seemed to be aided by the tornado traveling through the long leaf pine forest and those extra long needles offering a larger variety of oddly shaped targets for the CC product to indicate.

Rating:
(Click for EF Scale)
EF-1
Estimated Maximum Wind: 105 mph
Fatalities/Injuries: none
Damage Path Length: 1.71 miles
Maximum Path Width: 100 yards
Approximate Start Point/Time:

7 W Purvis
10:04 am

Approximate End Point/Time:

8 WNW Purvis
10:07 am

 

Radar Imagery
These images from the Slidell, LA Doppler radar show the storm at 10:05 am shortly after the tornado began. The image on the left shows 0.5° base reflectivity data, and the image on the right shows 0.5° storm relative velocity data. Click on the thumbnail below for a higher resolution image.

Radar - Lamar County Tornado

 

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Petal EF-1 Tornado

 

Click on map above to see entire damage point notation and damage pictures at select points.

 

Track Summary
This tornado touched down in Petal along West Central Ave. Here, two businesses sustained minor roof damage with a portion of the roof peeled off. Several trees were uprooted and a fence was blown down. As the tornado move northward, a few more trees were downed along with limbs broken off trees. Along Stevens St, a large tree crushed two vehicles. More minor tree damage occurred across several streets before the tornado crossed the intersection of Highway 11 and the Evelyn Gandy Parkway, here more trees were damaged. The tornado lifted after it crossed into the wooded area north of the Parkway near the Leaf River. Maximum winds were around 90 mph.

Rating:
(Click for EF Scale)
EF-1
Estimated Maximum Wind: 90 mph
Fatalities/Injuries: none
Damage Path Length: 1.26 miles
Maximum Path Width: 160 yards
Approximate Start Point/Time:

1 W Petal
11:41 am

Approximate End Point/Time:

2 NW Petal
11:45 am

 

Radar Imagery
These images from the Brandon, MS Doppler radar show the storm at 11:44 am as the tornado tracked near Petal. The image on the left shows 0.5° base reflectivity data, and the image on the right shows 0.5° storm relative velocity data. Click on the thumbnail below for a higher resolution image.

Radar - Forrest County Tornado

 

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Jefferson Davis County EF-0 Tornado

 

Click on map above to see entire damage point notation and damage pictures at select points.

 

Track Summary

This brief tornado touched down at Williams Ln, just off Highway 35, and tracked north for about 1 mile. At Williams Ln, a large tree was blown down onto a truck, the tree was laid to the west. Other large limbs and tree debris was also blown down here and laid to the west. The tornado broke off several limbs a Granby Road where it then dissipated. Maximum winds were around 80 mph.

Rating:
(Click for EF Scale)
EF-0
Estimated Maximum Wind: 80 mph
Fatalities/Injuries: none
Damage Path Length: 1.08 miles
Maximum Path Width: 50 yards
Approximate Start Point/Time:

5 N Bassfield
12:35 pm

Approximate End Point/Time:

6 N Bassfield
12:37 pm

 

Radar Imagery
These images from the Brandon, MS Doppler radar show the storm at 12:36 pm as the tornado tracked north of Bassfield. The image on the left shows 0.5° base reflectivity data, and the image on the right shows 0.5° storm relative velocity data. Click on the thumbnail below for a higher resolution image.

Radar - Jefferson Davis County Tornado

 

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