Mesoscale Discussion 0885
NWS Storm Prediction Center Norman OK
0926 PM CDT Sat May 27 2017
Areas affected...Northeast AR...MO Bootheel...Western TN
Concerning...Tornado Watch 284...
Valid 280226Z - 280400Z
The severe weather threat for Tornado Watch 284 continues.
SUMMARY...Widespread damaging winds will continue to be possible
with the bowing line moving into northeast AR and eventually western
TN. Local watch extension and/or new watch issuance will eventually
DISCUSSION...At 02Z, an intense bowing thunderstorm line is moving
into northeast AR. This line recently produced a 61 kt wind gust at
the Poplar Bluff ASOS site. With widespread thunderstorm activity
and a southward moving outflow ahead of this line, there is some
uncertainty regarding how this system will evolve with time.
However, with ample buoyancy and shear feeding into the area from
southwest, this system is expected to remain intense for at least
the next few hours, with a continued threat of widespread damaging
wind gusts spreading into northeast AR, the MO Bootheel, and western
TN, including the Memphis area.
With time, this system will move out of WW 284 into portions of PDS
WW 280, and then into areas currently not in either watch. With the
severe threat expected to persist, local watch extension will likely
be needed in the short term, with new watch issuance possible into
portions of northern MS later this evening.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 36129192 36449122 36799062 36679017 35898931 35098898
34738975 34839038 35149104 35549176 35789191 36129192