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MD 0731 CONCERNING SEVERE THUNDERSTORM WATCH 209... FOR SOUTHEAST NEBRASKA...FAR NORTHWEST MISSOURI...FAR SOUTHWEST IOWA
MD 0731 Image


Mesoscale Discussion 0731
NWS Storm Prediction Center Norman OK
0846 PM CDT Tue May 21 2019

Areas affected...Southeast Nebraska...far northwest Missouri...far
southwest Iowa

Concerning...Severe Thunderstorm Watch 209...

Valid 220146Z - 220245Z

The severe weather threat for Severe Thunderstorm Watch 209
continues.

SUMMARY...The severe threat appears to be decreasing in WW 209.
Storms are now moving into a more stable environment and any
remaining severe threat should be sporadic in nature. No downstream
watch is anticipated.

DISCUSSION...Storms with a history of producing funnel clouds and a
few tornadoes have now congealed across far southwest Iowa.
Mid-level rotation has been on the decrease since the peak activity
that occurred across Richardson/Nemaha Counties in Nebraska. As
these storms continue to move north of the surface boundary, the
stable environment should limit any further severe threat.
Marginally severe hail would be the most likely remaining (i.e., in
the next hour) threat to occur given 40 kts of effective shear and
cold temperatures aloft. As this activity is expected to be very
limited in space and time, no downstream watch is anticipated.

..Wendt.. 05/22/2019

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

ATTN...WFO...DMX...EAX...OAX...

LAT...LON   41099627 41329590 41269516 40739479 40079506 40079556
            40219611 40249646 40599653 40979635 41099627 

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