Multiple Tornado Event - February 28th, 2011


Event Summary for Central Alabama

On the afternoon of Sunday, February 27th, a low pressure system developed in the Southern Plains, eventually tracking across the Tennessee Valley, well to the north of Alabama.  In response to this low pressure, coupled by high pressure off the Atlantic Coast, southerly flow brought low 60 dew point temperatures as far north as Huntsville by 12 am Sunday night.  By the late morning hours of Monday, February 28th, a secondary surface low developed and tracked across the northern half of the state of Alabama.  This surface low created storms that began of a cellular nature by Noon on Monday.  These cells evolved into a broken line of thunderstorms by the middle of the afternoon on Monday.  Embedded in the line were storms that developed supercellular structures, a few of which spawned tornadoes and many areas of straight line wind damage.   Click on each for a summary of the tornadoes. 

 
Location/Clickable Detailed Summary Link
Damage Rating/Estimated Maximum Wind Speeds
Injuries/Fatalities
Damage Path Length/Width
Starting Point/Time
Ending Point/Time
EF-0
75 mph
None
0.34 miles
50 yards
33.3540/-86.2212
353 pm
33.3548/-86.2152
353 pm
EF-0
75-80 mph
None
8.95 miles
200 yards
32.5699/-86.4854
505 pm
32.5546/-86.3329
520 pm
EF-0
80 mph
None
1.9 miles
30 yards
33.0073/-85.3988
528 pm
33.0084/-85.3658
530 pm
EF-1
100-110 mph
None
4.96 miles
200 yards
32.2105/-86.5114
537 pm
32.1965/-86.4282
542 pm

Preliminary Local Storm Reports
Public Information Statement 

Tornado Watch 33 was in effect from 1239 pm CST until 7 pm CST.

 

Severe Weather Episode Data 

 

Surface analysis
Surface Analysis
Feb 28 12 pm
Surface Analysis 21z
Surface Analysis
Feb 28 3 pm 
Day 1 Outlook
Day 1 Severe Weather Outlook
Issued Feb 28 6 am
Day 1 Outlook Tor Probs
Day 1 Probabilistic Outlook
Issued Feb 28 6 am
Day 1 Outlook
Day 1 Severe Weather Outlook
Issued Feb 28 1030 am
Day 1 Outlook
Day 1 Probabilistic Outlook
Issued Feb 28 1030 am
Day 1 Outlook
Day 1 Severe Weather Outlook
Issued Feb 28 139 pm
Day 1 Outlook
Day 1 Probabilistic Outlook
Issued Feb 28 139 pm
 

 


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