Tornado Outbreak - November 30, 2010


Event Summary for Central Alabama - 6 Tornadoes Confirmed

On the evening of November 29th, a deepening surface low over the upper Mississippi Valley dragged a warm front northward from the Gulf of Mexico. Surface dew points shot upward into the 60 to 68 degree range across much of central Alabama. Additionally, a strong cold front was approaching the area from the west providing even more lift. Surface-based instability simultaneously shot upward with Storm Relative Helicity values of 300-500 m2/s2. This combination of parameters created multiple nocturnal supercell thunderstorms. These supercells exhibited strong rotational velocities at times, but only managed to create 6 relatively weak tornadoes across the area. The strong storm system did however produce tornadoes in Louisiana, Mississippi, Alabama, Georgia and South Carolina. Here is a summary of those events: 

 
Location/Clickable Detailed Summary Link
Damage Rating/Estimated Maximum Wind Speeds
Injuries/Fatalities
Damage Path Length/Width
Starting Point/Time
Ending Point/Time
EF-1
95 mph
None
1.4 miles
500 yards
33.5530/-88.1022
141 am
33.5660/-88.0842
143 am
EF-1
95 mph
None
0.1 miles
50 yards
32.6267/-87.4231
415 am
32.6274/-87.4220
415 am
EF-1
90 mph
None
1.7 miles     
150  yards
34.1558/-86.5751
709 am
34.1643/-86.5469
711 am
EF-1
90 mph
None
5.8 miles
150 yards
32.4281/-86.5065
957 am
32.4615/-86.4153
1006 am
EF-0
75-80 mph
None
1.7 miles
40 yards
33.1121/-86.0659
1014 am
33.1252/-86.0417
1015 am
EF-0
80 mph
None
6.7 miles
100 yards
32.5989/-86.2311
1023 am
32.6544/-86.1378
1031 am

 
 
Tornado Watch 756 was in effect from 1149 pm CST November 29th until 7 am CST on November 30th.
Tornado Watch 757 was in effect from 349 am CST until 11 am CST on November 30th.


 Severe Weather Episode Data
 
 
 
 

Surface Analysis
November 29 at 9 pm

Surface Analysis
November 30 at 12 am

Day 1 Severe Weather Outlook
Issued Nov 29 at 621 pm

Day 1 Severe Weather Probabilities
Issued Nov 29 at 621 pm

Day 1 Severe Weather Outlook
Issued Nov 29 at 138 pm

Day 1 Severe Weather Probabilities
Issued Nov 29 at 138 pm

BMX 12z Raob
Courtesy of University of Wyoming
 

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