News DetailTornadoes likely in Missouri River Valley
Posted At: September 16, 2006 @ 9:06 AM
Posted By: Reed Timmer
Related Categories: Tornadoes
Impressive deep and low-level shear along with moderate to strong instability will set the stage for a widespread severe weather outbreak today, including the possibility of tornadoes. We are currently (Saturday morning) analyzing data and model forecasts at a hotel in Omaha, NE, and our target area is Yankton, SD, because we can fly south into northeast NE if necessary, and also have W, E, and N road options. The RUC and the WRF are forecasting the best instability in southeast SD, with a strong surface low propagating through that region as well. The deep layer shear vector is also more perpendicular to the front north of the frontal bulge. The 12z WRF model forecast for 00z Sunday for CAPE, 850 mb flow, and 0-1 km helicity are displayed below. The forecast helicity values, while sufficient for tornadoes in southeast SD, will likely be higher than the WRF forecast just east of the surface low (smoothing issues).
CAPE![]() |
850 mb wind![]() |
0-1 km helicity![]() |



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goodluck guys! Setup looks pretty sweet... bring home a monster!
Hi Reed,
Hope the chase is going amazing and you have had double wedges all day!!!!
We are just recovering from a Tornado Outbreak over here in England had three tornadoes alone in and around my home town!!!
Looking forward to seeing footage.
Hi Reed - I hope you got some amazing footage! i can't wait to hear more! Stay safe!