1. Predicting Winter Precipitation
By: Tony Cummings

2. Problem Winter precipitation is major issue Georgia is not as prepared
Seasonal forecast would be helpful
Already forecast seasonal temperatures

3. Data Same data as undergraduate research KATL and KAHN from 1973-2007
ASOS data
Used Matlab script to decode

4. Methodology Decode Data Analyze data Linear Correlations [corr()]
Periodograms [periodogram()]
Cross spectral Analysis
cspd()
mscohere()
angle() .

5. Correlations

6. Periodograms

7. Zoomed Periodograms

8. Cross Spectral Analysis

9. Phase angle

10. Conclusions
Temps and Hours of precipitation are statistically correlated
Strong 6 year precipitation cycle
Cross Spectral Analysis results mixed
Precipitation predictions similar to temperature predictions