Archive for May, 2010

TWISTEX Field operations for May 31, 2010

Monday, May 31st, 2010

Currently in Lakewood, Colorado Forecast: Westerly winds aloft are suggested by the 12z model run and with surface winds veering near the surface will provide an environment for some hail across southeast Nebraska and western Iowa. Conditions are not favorable for good tornado development--thus TWISTEX will remain down through tomorrow. ...

TWISTEX Field operations for May 29, 2010

Saturday, May 29th, 2010

Currently in Spearfish, South Dakota Yesterday: Targeted several areas where conditions were supportive of supercells. One area was to the east of Dickinson, North Dakota, and the other area was to the southeast of Buffalo, South Dakota. Unfortunately, the capping layer proved to be too strong, thus no thunderstorms developed in ...

TWISTEX Field operations for May 28, 2010

Friday, May 28th, 2010

Currently on the road in Douglas, Wyoming. Forecast: Current target is the Williston-Minot-Dickinson, North Dakota area(for now).  Model forecast suggests intensifying surface low will back winds across western North Dakota and eastern Montana.  Coupled with very strong winds aloft, should provide a good environment for supercells and tornadoes--if ...

TWISTEX Field operations for May 25, 2010

Tuesday, May 25th, 2010

Currently on the road to Mobridge, South Dakota. May 22: Huge success for TWISTEX on this day.  Deployed the new instrument in the path of the developing wedge tornado that crossed to the north of Bowdle, South Dakota.  Tornado then developed into a strong/violent tornado causing incredible damage to high-voltage line towers ...

TWISTEX Field operations for May 22, 2010

Saturday, May 22nd, 2010

Currently on the road to Mobridge, South Dakota. Yesterday: Intercepted tornadic supercell west of Torrington that tried twice to produce a tornado, but didn't quite make it. Storm fell apart after crossing into Nebraska. Stayed overnight in Chadron, Nebraska. Forecast: Extreme instability exists over much of Nebraska and South Dakota today as ...

TWISTEX Field operations for May 21, 2010

Friday, May 21st, 2010

Currently in Goodland, Kansas May 19: Intercepted tornadic supercell west of Leedey, Oklahoma. Supercell tracked east through northcentral Oklahoma where the team witnessed a strong tornado 6 miles WSW of Putnam, Oklahoma within 70+ knot winds and partially wrapped in rain. Due to poor road options and the storm surging ...

TWISTEX Field operations for May 19, 2010

Wednesday, May 19th, 2010

Currently in Dumas, Texas Yesterday: During normal pre-deployment checkouts, we identified some issues with the new instrument, thus we won't be able to deploy it for this short trip series. Targeted tornadic supercell that initiated near Dalhart, Texas, where the team observed 3 tornadoes over a span of 50 miles to the east. ...

TWISTEX Field operations for May 17, 2010

Monday, May 17th, 2010

Currently in Denver, CO Forecast: 12z model data suggests that a negatively tilted 500 mb trough begins to move through the Texas and Oklahoma panhandles beginning tomorrow evening, with adequate moisture to southeast Colorado.  Good combination  of instability, upper level energy, and directional wind shear should set the stage for supercells and ...

TWISTEX Field operations for May 16, 2010

Sunday, May 16th, 2010

Currently in Denver Forecast: Current forecast suggests that this Tuesday and Wednesday holds possible opportunities for a TWISTEX deployment.  A mid level wave sweeps over the Texas/Oklahoma panhandles beginning on Tuesday morning causing a surface low to deepen in northeast New Mexico.  The 12z models show little moisture return by Tuesday evening, ...

TWISTEX Field operations for May 15, 2010

Saturday, May 15th, 2010

Yesterday: Drove to Midland, Texas on Thursday to be staged for the upslope event on Friday. Targeted the east-west orientated warm between Wink and Midland, Texas. Storms initiated early around 11 AM along and south of the warm front/dryline intersection where they quickly became tornadic. Witnessed three tornadoes between noon and 2 PM, but ...