Archive for April, 2009

Pre-TWISTEX fielding: April 29, 2009

Wednesday, April 29th, 2009

A brief synopsis of our operation for the next couple of days: Yesterday: Chased several storms yesterday-one in Roswell, NM--which died when we arrived, then turned back to south of Carlsbad, NM to give chase to a tornado-warned storm riding along the New Mexico/Texas border.  Storm crossed 285 at/near dark, thus no ...

Pre-TWISTEX fielding: April 28, 2009

Tuesday, April 28th, 2009

A brief synopsis of our operation for the next couple of days: Yesterday: Monday was basically a drive day.  No storms initiated on the retreating dryline.  Stayed in Lamesa, TX. Today: Upslope flow evident on the surface obs in western Texas and eastern New Mexico.  Easterly winds at 15 knots with mid 50s dewpoints ...

Pre-TWISTEX fielding: April 27, 2009

Monday, April 27th, 2009

A brief synopsis of our operation for the next couple of days: Yesterday: Intercepted two tornadoes approximately 8 miles north of Roll, OK.  Actually, we watched a hand-off from one tornado to the next as the more significant tornado formed about 1/8 mile to the north of the older circulation.  Our team ...

Pre-TWISTEX fielding: April 26, 2009

Sunday, April 26th, 2009

A brief synopsis of our operation for the next couple of days: Yesterday: Intercepted tornado warned storm that initiated in the Texas panhandle, and crossed into western Oklahoma.  Storm generated 1.5" hail and produced two funnel clouds-one of which was 3/4 to the ground near Roll, OK.  Group stayed in Weatherford for ...

Pre-TWISTEX fielding: April 25, 2009

Saturday, April 25th, 2009

A brief synopsis of our operation for the next couple of days: Today: A near-classic setup is in store for today. 500 wind speeds are more than adequate, and based on the RUC model runs this morning, it appears that moisture will not be an issue as well.  We'll be going for ...

Pre-TWISTEX fielding: April 24, 2009

Friday, April 24th, 2009

A VERY brief synopsis of our operation for the next couple of days: Today (Friday): Should complete new mobile mesonet preparations for Probe vehicle today for the upcoming missions to Kansas/Texas/Oklahoma.  Carl Young, Tony Laubach, and Ed Grub plan to help rush preparations to completion today.  There is a chance of severe today ...

Pre-TWISTEX fielding: April 20, 2009

Monday, April 20th, 2009

I'm currently on a 'Pre-TWISTEX' fielding mission that involves only one vehicle. Saturday: Had a reasonable chase day on Saturday.  We intercepted a tornado-warned storm west of Alva, OK that had a great rotating wall cloud, textbook RFD cut, descending cloud motions to the south, etc..  Got into position to deploy, produced ...

Pre-TWISTEX fielding: April 18, 2009

Saturday, April 18th, 2009

I'm currently on a 'Pre-TWISTEX' fielding mission that involves only one vehicle. Yesterday: Targeted 'tail end charlie' storm south of Quanah, which produced no severe weather. Today: Marginal day today.  Little surface focus with poor moisture.  850 winds strongly veered across southwest Oklahoma.  We'll likely target the dryline in west-central Oklahoma late this afternoon. ...

Pre-TWISTEX fielding: April 17, 2009

Friday, April 17th, 2009

All: This is a first of a series of near-daily email discussions of our tornado field research program.  If you wish to not receive these updates, please email me and I'll remove you from the list. A detailed discussion of our project is available at www.twistex.org. Due to time constraints this morning, this ...

TWISTEX 2009

Tuesday, April 7th, 2009

TWISTEX will once again be operational for the 2009 storm season.  Its core mission is to sample and analyze the tornado and near-tornado/tornadogenesis environment to better understand tornado development, maintenance and decay processes as well as to gain insight and knowledge of the seldom sampled near-surface internal tornado environment.  This ...