Valid 070100Z – 071200Z
…THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THROUGH MID
EVENING ACROSS PARTS OF THE CENTRAL HIGH PLAINS…
…SUMMARY…
Strong storms could still pose at least some risk for severe hail
and wind across parts of eastern Wyoming into mid evening.
…01Z Outlook Update…
Strong convection lingers within weak surface troughing north
through east of the Laramie mountains. This includes a small
cluster of storms north of Douglas WY, which may be supported by
forcing associated with a locally enhanced area of warm advection.
Beneath 30-40 kt west-southwesterly 500 mb flow, deep layer shear
across eastern Wyoming is strong, and boundary layer instability may
remain sufficient to maintain at least some severe hail/wind risk
into the 01-03Z time frame. Overnight, a broader area of lower/mid
tropospheric warm advection may maintain thunderstorm development
eastward through portions of western and central South Dakota and
Nebraska, before diminishing.
Otherwise, a couple of strong storms may linger through mid evening
across parts of the northern intermountain region and Great Basin.
However, due to increasingly sparse coverage, severe weather
potential is becoming increasingly negligible.
..Kerr.. 09/07/2019
$$