The 2014 significant weather season started out very slowly, i beg your pardon was welcomed by plenty of residents throughout the joined States. In fact, tornado reports were on monitor with several of the lowest level in recorded background (see graphic). Unfortunately, that would certainly all change during the critical week the April, v a significant tornado outbreak striking the southerly Plains and Deep south from April 27 - 29th. This outbreak produced 164 tornado reports end the 3 work span, with 69 evidenced tornadoes (so far) and sadly 35 U.S. Inhabitants lost their lives. Let"s delve deeper right into the cause of the outbreak.
You are watching: Tornado outbreak of april 27–30, 2014
Above is a explicate of the set-up on April 28th, which to be by far the most energetic day that the outbreak, with 115 tornado reports. As you have the right to see, there to be an expansive area of short pressure focused over the heartland the the country. This device was suck in low-level moist air from the Gulf, creating an unstable environment over the Gulf States. Meanwhile, solid upper level winds were tearing across the Rockies, into MS, AL and TN. This kind of set-up creates turning in the atmosphere with height, i m sorry is conducive for rotating storms or supercells. Include in a cold front pressing in from the west as the trigger, and also these supercells exploded over the south.
This atmospheric pattern produced many tornadoes, some of which were long-track and also violent tornadoes. Several EF-3 and also a few EF-4 tornadoes were reported with track lengths the 20 to 40 miles and widths that 1/4 to 3/4 mile (EF scale). Two of the strongest tornadoes occured in Vilonia, AR ~ above the 27th and Louisville, multiple sclerosis on the 28th. These tornadoes to be rated EF-4 v winds that 180 - 190 mph. If both tornadoes to be 3/4 mile wide, the Vilonia twister to be on the soil for practically 1 hour and traveled a length of 41.3 mile north of tiny Rock, AR. This tornado destroyed virtually everything in its path, as viewed the aerial image listed below from NWS tiny Rock:
Even the larger cities could not to escape the tornado outbreak, through Jackson, ms brushed by come the south and Tupelo, MS acquisition a direct hit. This tornadoes were both rated EF-3, cut paths roughly 30 mile long and also up to 1/4 mile wide.
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Winds were estimated to be in between 150 and also 155 mph. Below, you can see the tornado vortex signature (TVS) southern of Jackson, ms from the nationwide Weather service radar (which had actually a very close shave v the very same tornado):
After this significant outbreak, hope we will certainly see an additional calm period with respect come tornadoes and also severe weather.