Archive for May, 2008

TWISTEX Fielding Status: May 31, 2008

Saturday, May 31st, 2008

All: Current location:  Lakewood, CO Today was down--based on evening radar, appears to be a good call despite the Moderate Risk from SPC so far (Whew!).  Westerly H5 winds with easterly surface winds aren't the best for tornado producing supercells. TWISTEX group is targeting the next powerful system to emerge into the plains ...

TWISTEX Fielding Status: May 30, 2008

Friday, May 30th, 2008

All: Current location:  Salina, KS A great day for TWISTEX yesterday.  Deployed three in-situ probes (two HITPR, and one Photogrammetric probe), and the MMs were spaced roughly 1 km apart with M3 near the circulation, and M1 deployed south.  Probes took a direct hit.  Basically, a north-south deployment of in-situ core measurements ...

TWISTEX Fielding Status: May 29, 2008

Thursday, May 29th, 2008

All: Current location:  North Platte, NE Looks like a busy day is in store for us as excellent shear and moisture sets the stage for supercells, large hail and tornadoes in central/eastern Nebraska.  Warm front will lift northward today through central Nebraska towards the O'Neill area by 0z.  Storms should initiate in ...

TWISTEX Fielding Status: May 28, 2008

Wednesday, May 28th, 2008

All: Current location:  Lakewood, CO Moisture is working its way back into NE at the moment, with a projected surface low somewhere in southwest Nebaska/northeast Colorado.  NAM models suggest some zonal flow over this area with some southwest flow further west. At the moment, we're targeting an area of the warm front from ...

TWISTEX Fielding Status: May 27, 2008

Tuesday, May 27th, 2008

All: Current location:  Great Bend, KS Bruce, Cathy, Verne went back to Quinter to survey the damage yesterday morning.  Verne flew the TWISTEX plane to collect still/video imagery of the damage path.  Group surveyed about 8 miles along the path until early afternoon until it was time to chase. Intercepted tornado warned storm ...

TWISTEX Fielding Status: May 26, 2008

Monday, May 26th, 2008

All: Current location:  Great Bend, KS Yesterday, we intercepted two tornadoes near LaCross, but the tornadoes were rather brief (one tornado, one landspout) that we didn't have a chance to deploy.  Tried to collect hail in three different storm cores, but only marble to golfball size hail was observed. Today, we have a ...

TWISTEX Fielding Status: May 25, 2008

Sunday, May 25th, 2008

All: Current location:  Lincoln, NE Yesterday, storms tried to initiate along the dryline near Grand Island, but quickly fell apart.  Storms did initiate further north in northeast Nebraska, but the appearance on radar showed them to be struggling in the low Cape environment. Today, a surface low begins to deepen in southeast Colorado ...

TWISTEX Fielding Status: May 24, 2008

Saturday, May 24th, 2008

All: Current location:  Hays, KS. Another great day.  Intercepted 6 tornadoes. Witnessed large wedge tornado north of Quinter-an amazing transformation of a 'stovepipe' type tornado to the (what appeared to be) entire mesocyclone rotation dropping immediately to the ground-creating the wedge.  Similar view caught by another chaser is currently on TWC.  All three ...

TWISTEX Fielding Status: May 23, 2008

Friday, May 23rd, 2008

All: Current location:  Hays, KS. Great day.  Collectively intercepted an (estimated) 7 tornadoes, several at very close range.  Collected data on 3 of the tornadoes. Today is a repeat of yesterday.  Surface low redevelops in CO with mid level winds even slightly stronger than yesterday.  Incredible upslope flow with good moisture entrainment by ...

TWISTEX Fielding Status: May 22, 2008

Thursday, May 22nd, 2008

All: Current location:  Eastbound I-70 Active day today Near Goodland-Scott City-Wakeeney area along triple point. TWISTEX group is meeting in Goodland then likely headed south pending RUC model runs. Apologies for this update being short. Equipment status: Photogrammetric probes:          Up HITPR probes:                    Up 3D in-situ ...