SPC MD 1680

MD 1680 CONCERNING TORNADO WATCH 490... FOR NORTHWEST KS...NORTHEASTERN CO...AND SOUTHWEST NE

Mesoscale Discussion 1680
NWS Storm Prediction Center Norman OK
0543 PM CDT Sun Oct 01 2017

Areas affected...northwest KS...northeastern CO...and southwest NE

Concerning...Tornado Watch 490...

Valid 012243Z - 020045Z

The severe weather threat for Tornado Watch 490 continues.

SUMMARY...Scattered strong thunderstorms have developed across the
watch area, with large hail being reported.  The hail threat will
continue for the next few hours, along with the possibility of
damaging wind gusts and a couple of tornadoes.  A tornado watch
remains in effect.

DISCUSSION...Supercell thunderstorms continue to develop within the
watch area, where MLCAPE values are in excess of 2000 J/kg and
effective bulk shear ranges from 40-50 kt. These storms are expected
to continue for the next few hours. As the low-level jet begins to
increase toward sunset, low-level shear should increase, which may
increase the tornado potential, especially farther east where
low-level moisture is slightly better. However, large hail continues
to be the primary threat. Areas of south-central NE and
north-central KS are being monitored for a possible watch extension
or perhaps a new watch may be issued within the next few hours as
the storms move to the edge of the watch.

..Karstens/Thompson.. 10/01/2017

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...LBF...ICT...GID...DDC...GLD...BOU...

LAT...LON   41920100 41920100 41920100 

38530080 38820145 39610193 40240223 40660217 40970180 41430106
            41829996 41999888 41259838 39819824 39079881 38580024
            38530080 

42290121 42290121 42290121 

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