MD 1128 CONCERNING SEVERE THUNDERSTORM WATCH 337… FOR NORTHEAST NEBRASKA…WESTERN IOWA…FAR SOUTHEAST SOUTH DAKOTA
Mesoscale Discussion 1128
NWS Storm Prediction Center Norman OK
0324 AM CDT Tue Jul 07 2020
Areas affected...Northeast Nebraska...Western Iowa...Far Southeast
South Dakota
Concerning...Severe Thunderstorm Watch 337...
Valid 070824Z - 071030Z
The severe weather threat for Severe Thunderstorm Watch 337
continues.
SUMMARY...A severe threat will likely continue for another hour or
so across northeast Nebraska. As the line of storms approaches the
Nebraska-Iowa state line, the threat is expected to become marginal.
Wind damage and hail will be the primary threats. No new watch is
expected downstream.
DISCUSSION...The latest radar imagery shows a line of strong
thunderstorms from far southeast South Dakota into northeast
Nebraska. The line of storms is supported by a 30 to 40 kt low-level
jet over the central Plains and by a minor shortwave trough moving
through the northern Plains. Although a wind-damage and hail threat
may continue for another hour or so, the line of storms is moving
away from the low-level jet which is centered over western Nebraska.
The line of storms has also shown some weakening characteristics
including warming cloud tops on IR imagery. For this reason, the
threat should become increasingly isolated, especially as the
convection approaches the Nebraska-Iowa state line.
..Broyles/Edwards.. 07/07/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DMX...FSD...OAX...
LAT...LON 43079715 42409779 42109815 41839801 41389729 41379670
41629594 42139546 42599562 43009638 43079715
from SPC Mesoscale Discussions https://bit.ly/UzDNup
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