JD: 00-197 DoW: FRI/SAT UTC Date: 15JULY2000

SUMMARY: MCS in SD Blocked By Clouds

TLE PREDICTION: 0.14 (0.2x0.7)

RESULTS: 0, think haze and clouds blocking sprites

LESSONS: clouds, haze and moon hinder veiwing!

PERSONNEL: Lyons, Nelson, Nordem, Gerken

STEPS STATUS: STEPS on standby.

YRFS OPERATION LOGS: Hot dry condition continue. An intense MCS developed in ND and rode the ridge southeast in northern SD. The storm had very high positive rates (>60%), hail, TVS and tops to 65000 ft. However at a range of 600-650 km, haze, full moon and then thin cirrus blowoff from the mountains blocked our view of the storm. Right after dark it seemed we had a clear line of sight, but saw almost no lightning, so we suspect that viewing was compromised. Shot TL only on GEN III. Have GEN III S-VHS. Recycled Xybion tapes. Stanford set up but saw nothing.

STEPS OPERATIONS: STEPS on standby

KEY RESULTS : n/a

Total TLEs from Yucca Ridge This Campaign: 950+

FMA

Red Xybion (A)-Patrol: 0 tapes

Sony TRV900 3CCD: time lapse of late storm ;

GEN III unit; 1 DV tapes; TL of clouds; 1 S-VHS

JVC KY-19: shoot daytime TL/STEPS Cam (to ESE);

Pulnix CCD: shoot various TL scenes;

Photodiode: available

Winckler PMT: available

GPS: OK

WWV Source: OK

VLF Inspire: audio only

ELF N-S: not available

ELF E-W: not available

NLDN Live: OK

NLDN Paper: 5 maps

NLDN Archive: 2 saves

MRC Data Acquisition: available

FMA Data Acquisition: not available

Thunder Mic: available

LANL Tracker: OK

Red Xybion (B)-Zoom; 0 tapes (on tracker)

Red Xybion (C)-Tele: 0 tapes-on tracker

Blue Xybion(D)-zoom: 0 tapes - problems with focus

Mountain Cam: nominal

STEPS Cam: nominal

Shure Mic: OK

NEXRAD Archive: Revised EDIS;

GOES Archive: OK

RUC2 Archive: OK

STANFORD/STAR LAB:

Telescope used

LLTV used

ELF/VLF/PMT used

UTAH STATE UNIVERSITY:

Xybion GEN III (6 deg FOV) available

White or blue

CCD, Medium FOV OH imager available

Gravity waves/sprites

MIT ELF: operational

FUELLEKRUG ELF: operational

ISRAELI ELF: nominal