Saturday, March 19, 2011

March 19 9z RUC Best Lifted Index Forecast Discussion

This is an image of right now from the 9z RUC model.
FORECAST DISCUSSION
Weak area of moderate instability in Central Oklahoma providing breeding ground for strong to severe thunderstorms this morning into the afternoon.
At this time, thunderstorms have developed in West Oklahoma and are now moving east into Central Oklahoma.
Will definitely have to monitor the situation for several factors.
One is the image above of the Lifted Index. With values in the -8 range, the atmosphere is at least moderately unstable.
Another factor is Lapse Rate values. Right now at the time of this issuance, Lapse Rates were in the 8-8.5 region in Oklahoma. This provides more evidence of an unstable atmosphere.
This will be a situation to watch, and a Severe Weather Situation will be issued next.

No comments: