Mesoscale Discussion 0013
NWS Storm Prediction Center Norman OK
0536 PM CST Mon Jan 02 2017
Areas affected...MS Delta...southern AL and GA...FL Panhandle
Concerning...Tornado Watch 3...4...
Valid 022336Z - 030130Z
The severe weather threat for Tornado Watch 3, 4 continues.
SUMMARY...The threat for damaging wind and isolated tornadoes
continues across the watch areas.
DISCUSSION...Surface analysis shows a warm front from southeastern
AL across southern GA, with 65-70 dewpoints to the south and
relatively stable and dry air to the north. Meanwhile, a cold front
continues to surge eastward from central AL southwestward into
southeast LA, accompanied by a line of thunderstorms with gusty
The main tornado threat area remains along the warm front, where
cells intersecting the front have shown persistent areas of
rotation. VWPs from southeast AL show large looping low-level
hodographs with 0-1 km SRH on the order of 250 m2/s2. This, along
with ample moisture, should continue to support a risk of a
transient tornado as cells interact with the warm front. However,
increasing rain and storms from the west will likely disrupt storm
mode later this evening, with the main forcing for ascent with the
upper trough also lifting away from the area.
LAT...LON 29738547 30118588 30298658 30238727 30178770 30288775
30688747 31608686 32518625 32858537 32658447 32458327
32008294 31558325 31038387 29738547