JD: 00-193 DoW: MON/TUE UTC Date: 11JULY2000

SUMMARY: Null Storm in Western LMA; Few TLEs from NE MCS

TLE PREDICTION: 0.35 (0.7 x 0.5)

RESULTS: 5+, null w/spiders case in LMA; TLE makes a few TLEs

LESSONS: can have big spiders but still no sprites

PERSONNEL: Lyons, Nelson, Fossum, Nordem, Gerken

STEPS STATUS: STEPS down. Bill B. and Ken E. on hold.

YRFS OPERATION LOGS: Partial operations. Mountain storms kept coming until after 04Z, when sprinkles and lightning finally ended. Shot SONY/WIDE w/ image integration the GEN III plus S-VHS dub, 1 KY 19 tape (FAS and/or LoLux), and 2 Xybions. Also tested PH unit and VLF. Seemed to work well..

As clearing continued still had excellent view of spiders from small MCS (10*4 km*2) about 150-200 km to SE but it never made a sprite. Relatively low percent positive all night may well have been a factor. The Colorado was just barely large enough, but somehow no sprites. Why? Where the spiders associated with negative CGs?

Air rather clear. Moon illuminated clouds.

STEPS OPERATIONS: STEPS down

KEY RESULTS : Interesting night. Have much excellent lightning video from storm which rolls overhead and into the western LMA. Good cloud shots. Many spiders. Linear MCS in NE makes a few TLEs. What are the charge moments on the spiders that did NOT make sprites? These spiders were mostly negative?? Moon quite bright. Great Xybion video of ICs in moonlight clouds (B tape)

Total TLEs from Yucca Ridge This Campaign: 950+

FMA

Red Xybion (A)-Patrol: 3 tapes

Sony TRV900 3CCD: time lapse of late storm ; night lightning, 2 S-VHS tapes

GEN III unit; 5 DV tapes of lightning and sprites

JVC KY-19: shoot daytime TL/STEPS Cam (to ESE); 1 tape of lightning

Pulnix CCD: shoot various TL scenes; tried lightning w/o much luck

Photodiode: many samples

Winckler PMT: available

GPS: OK

WWV Source: OK

VLF Inspire: many samples

ELF N-S: not available

ELF E-W: not available

NLDN Live: OK

NLDN Paper: 14 maps

NLDN Archive: 4 saves

MRC Data Acquisition: many samples

FMA Data Acquisition: not available

Thunder Mic: available

LANL Tracker: OK

Red Xybion (B)-Zoom; 2 tapes (on tracker)at 12.5 mm

Red Xybion (C)-Tele: 2 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; manual

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