The trough of low pressure over central Nebraska will continue to move
to the east during the next 12 - 24 hours, placing North Platte in the
position to receive wrap-around moisture. Models indicate sufficient
mid-level moisture will be present for the development of mid-level
clouds over northwestern Nebraska. There exists a possibilty of
precipitation in the targeted area or the formation of low-level stratus.
This will affect the final go/no go decision.
In the longer term, a weaker trough is expected to move through the
North Platte area for Thursday, bringing with it drier air. As of this
forecast, conditions do not look favorable for mid-level cloud development
on Thursday.
Curtis/Adam/John
The CLEX-9 field campaign has made the decision to stand down all operations
for Wednesday, October 10th. Strong drying aloft and downward forcing are
moving over the target area. Clearing has occurred over all of NE Colorado
and is spreading into WY / NE in the wake of a low pressure system. There are
no positive indications for mid-level cloud formation over the WY / NE / CO
region this morning.
In the longer term... a ridge will build over the area Thursday and likely
inhibit cloud formation. Thursday evening the region begins to come under
the influence of the next trough from the Pacific Northwest, which could
provide sampling opportunities from Friday into the weekend.
John/Adam
Sunrise
Central Daylight Time
Begin civil twilight 7:22 a.m.
Sunrise 7:50 a.m.
Sun transit 1:30 p.m.
Sunset 7:10 p.m.
End civil twilight 7:38 p.m.