WMOD00270

• Title: The Southern Plains Experiment in Cloud Seeding of Thunderstorms for Rainfall Augmentation Phase II ‎(SPECTRA)‎
• Prepared For: The Texas Department of Licensing and Regulation
• Prepared By: Woodley Weather Consultants
• Date: 12/28/2005
• State: TX
• Weather Modification - Doc Type: Report

7.0SUMMARY OF SIGNIFICANT EVENTS DURING SPECTRA II
A summary of the significant events during SPECTRA II is provided in Table 3. Additional information
on specific events can be obtained by reading Appendices C, D and E.
Table 3
SPECTRA II Events Summary
Date Nature of Events
May
3All project personnel are on site in Plains and Denver City
7Calibration of SF gas releases using balloons. Release and detection of SFgas in cl
66
smoke as a marker. ICE refuses to sell its hygroscopic flares to SPECTRA II.
10Calibration of the salt seeding and SFgas release systems. Ben Livingston, formerly
6
Stormfury, visits from Midland. Severe thunderstorm with small hail at the Plains air
the late afternoon.
12Salt and gas release during evening test case southeast of Plains. SFnot detected.
6
13Arvind Sharma arrives for a visit from India.
14Meeting with Arvind Sharma. Salt and gas release test case conducted during late aft
southwest of Plains. Jack Cobb flies the base seeder. Weak hits of SFwere noted on
6
15Tommy Shearer arrives in Plains to pickup Arvind Sharma for flight to San Angelo t
Concho Cartridge.
18Deployment to Norman, Oklahoma. Strong thunderstorms move into northeast Oklah
overnight.
19Early morning thunderstorms to north and east of Norman. Many outflow boundarie
No suitable clouds. Return to Plains, Texas late in the day.
23Strong dry downburst at Plains airport.
24Two large tanks of liquid SFdonated by Don Griffith of North American Weather C
6,
arrives in Plains
25Salt and SF gas release test case conducted near Melrose, New Mexico, one strong S
6
Cloud too strong for repenetration.
27Begin transfer of SF liquid from large tank to smaller ones. Salt and gas release test
6
Dimmit, Texas. SFnot detected.
6
28Torrential early morning rainfall in area. 8 inches total rain reported near Brownfield
Road between Brownfield and Plains is closed and remains closed for over 1 week.
30Salt and gas release test case conducted to north of Plains. SF gas not detected.
6
31Two salt and gas release test cases conducted near Portales, New Mexico. SF hits do
6
both cases. Red Francik takes Bill Woodley’s position on Cheyenne cloud physics ai
June
3Salt and gas release test case conducted near dry line well to the east of Plains. SFn
6
4Last potential day of flight operations. Initial phase of project over by nightfall
5Project personnel return to home bases. Severe weather in area by mid-afternoon. Se
thunderstorm with tornado noted near Big Springs, Texas by early evening.
29