WMOD00196

• Contract/Permit #: 2003-01
• Sponsor Name: Gunnison County, City of Gunnison, Crested Butte
• Project Name: WM Evaluation Report
• Title: The Development, Conduct and Evaluation of a Cloud Seeding Program for the Gunnison River Basin, CO During the 2003-04 Season
• Date: 8/1/2004
• County: Gunnison
• State: CO
• Weather Modification - Doc Type: Reports

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Table 2-4 Storm (Oct - Apr >0.4") statistics by 700-mb wind direction sector
(All winds and temperatures at the 700-mb level)

.. 700~lllb dh' . All Evei{i{ I ... 0,22' 23-45 ' .46-68 '.69~9().' 91-112 113-135 136-158
# Snd!!s 166 9 4 0 0 I 0 2
Mean wind sod 21.3 19.2 19.8 nJa nJa nJa nJa nJa
Mean temp -4.1 -4.7 -5.5 nJa nJa nJa n/a n/a
% < or - -5C 46% 67% 50% n/a n/a n/a n/a n/a
% < or ~ -2C 81% 78% 100% n/a n/a n/a n/a n/a
StabUitv I 72 49 45 3 3 3 022 0 0 o 0 1 0 020
Storms/Season 12.8 0.7 0.3 0.0 0.0 0.1 0.0 0.2
# -5C or colder 5.9 0.5 0.2 0.0 0.0 0.0 0.0 0.1
# -2C or colder 10.4 0_6 0.3 0.0 0.0 0.1 0_0 0.1
Seedable' 7.6 0.4 0.2 0_0 0.0 0.0 0.0 0_1
. 'td'()1llil6 dil' I- fS9;1-SM'11li.;:to:z :zb3~:Z::Z5"" ':2:z/),:zlj,1l;;:24972~O~" ':~'1j'lAZ92 ,. 293<H5 316"337
# Snd!!:s 5 15 25 32 35 10 18 3
Mean wind sod 16.6 20.3 19.9 26.3 23.3 22.7 15.6 21.7
Mean temp -8.0 -2.2 -2_7 -4.6 -4.7 -3_9 -4.1 -6.3
% < or ~ -5C 40% 13% 28% 56% 51% 60% 50% 67%
% < or ~ -2C 80% 47% 76% 91% 100% 70% 72% 100%
Stabilitv' 0 I 4 8 2 5 8 10 7 17 8 7 17 13 8 7 I 2 9 5 4 2 0 I
Storms/Season 0.3 1.2 1.9 2.5 2.7 0.8 1.4 0.2
# -5C or colder 0.1 0.3 0_7 1.2 1.4 0.4 0.7 0.1
# -2C or colder 0.2 0.7 1.5 2.3 2.5 0.7 1.0 0.2
Seedable2 0.1 0_5 1.1 1.8 2.0 0.6 0.8 0.2
:+L~7,Dij~b1(lfr~i{ ;''3118~359J:: ~ ~:,.,,:, ..
# Snd!!s 7
Mean wind spd 18.9
Mean temD -3.0
% < or - -5C 43%
%<or~-2C 57%
Stability' 3 4 0
Storms/SeasoD 0.5
# -SC or colder 0.3
# -2C or colder 0.4
Seedable' 0.3
I Stability: # well-mixed, # slightly stable, # stable

2 Seedable: 700-mb temperature of -2e or colder, and not in "stable" category

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