2026 Ensemble Clustering and Sensitivity Analysis Testbed
Example Case Study for Using Clusters & ESA
Guide for How to Interpret Clustering Product
DESI - NOAA Only, CAC-enforced
DESI - GSL Site
DAY: Day 3
Day 3
Day 4
Day 5
Day 6
Day 7
Day 8
Day 9
DOMAIN: CONUS
CONUS
WEST
CENTRAL
EAST
ALASKA
HAWAII
PACIFIC
FIELD: 500Z EOF Patterns
500-hPa Height Clusters
500-hPa Height EOF Patterns
Cluster Phase Space
Cluster Heights (Anomalies)
Cluster Heights (Differences)
Cluster Maximum Temperatures
Cluster Minimum Temperatures
Cluster 24-h QPF
QPF Clusters
QPF EOFs
Cluster Phase Space
Cluster Percentile QPF
Cluster Percentile QPF (Difference)
MSLP Clusters
MSLP EOF Patterns
MSLP Cluster Phase Space
Cluster MSLP Differences
MSLP Cluster Maximum Temperatures
MSLP Cluster Minimum Temperatures
MSLP Cluster 24-h QPF
THRESHOLD: 0.25"
0.25"
0.50"
OBJECT: 1
Object 1
Object 2
Object 3
Object 4
Object 5
Object 6
PERCENTILE: 50th
10th
25th
50th
75th
90th
95th
INIT: 00 UTC Mon 24 Aug 2026
CASE 1 | Jan 24 00Z - Jan 25 00Z, 2026 Eastern CONUS Winter Storm
Day 3 - 12 UTC Wed 21 Jan 2026
Day 3 - 00 UTC Wed 21 Jan 2026
Day 4 - 12 UTC Tue 20 Jan 2026
Day 4 - 00 UTC Tue 20 Jan 2026
Day 5 - 12 UTC Mon 19 Jan 2026
Day 5 - 00 UTC Mon 19 Jan 2026
Day 6 - 12 UTC Sun 18 Jan 2026
Day 6 - 00 UTC Sun 18 Jan 2026
Day 7 - 12 UTC Sat 17 Jan 2026
Day 7 - 00 UTC Sat 17 Jan 2026
CASE 2 | Feb 23 00Z - Feb 24 00Z, 2026 Northeast Event
Day 3 - 12 UTC Fri 20 Feb 2026
Day 3 - 00 UTC Fri 20 Feb 2026
Day 4 - 12 UTC Thu 19 Feb 2026
Day 4 - 00 UTC Thu 19 Feb 2026
Day 5 - 12 UTC Wed 18 Feb 2026
Day 5 - 00 UTC Wed 18 Feb 2026
Day 6 - 12 UTC Tue 17 Feb 2026
Day 6 - 00 UTC Tue 17 Feb 2026
Day 7 - 12 UTC Mon 16 Feb 2026
Day 7 - 00 UTC Mon 16 Feb 2026
ENSEMBLE SENSITIVITY: 500 hPa Heights PC1
Sensitivity of 500 hPa PC1
Sensitivity of 500 hPa PC2
Sensitivity of QPF PC1
Sensitivity of QPF PC2
Sensitivity of MSLP PC1
Sensitivity of MSLP PC2