CONTEST STATUS - Updated: FRI ... 14-JUL-17 @ 8:30 PM EDT

Winter '17 / '18 - Snowfall Forecast Contests
19th Annual 'Regular Season'
Season starts when the first flakes start a'flyin'

17th Annual 'Season-total'
Entries accepted between 01-NOV-17 and 30-NOV-17
Verification period: 01-DEC-17 through 31-MAR-18

Winter '16 / '17 - Snowfall Forecast Contests
18th Annual 'Regular Season'
FINAL results here
16th Annual 'Season-total'
FINAL results here

Sunday, January 18, 2009

Stellar Dendrites

High SN:H2O were observed in this morning early snowfall reports.

ORH - 23:1
CON - 24:1
BDL - 25:1

Ratios are well above normal.

Image courtesy Cooperative Institute for Precipitation Systems

12z Skew-T from GYX shows cloud-top ~-18°C...the cold edge of favored stellar dendrite growth region. Note the strong warm-air advection near 700 mb acting on the elevated moist layer where mixing ratios reach their maximum value.

Skew-T courtesy SPC.

Snowflake morphology courtesy

No comments: