CONTEST STATUS - Updated: SUN ... 18-MAR-18 @ 9:30 AM EDT

Winter '17 / '18 - Snowfall Forecast Contests

19th Annual 'Regular Season'
- Interim Standings ... as of Snow Storm #6 here
- Forecaster Storm Stats ... as of Snow Storm #7 here

- Snow Storm #8
Synoptiscope in VCP32

- Snow Storm #7: 12-MAR-18
FINAL Results here
Winning forecast issued by: iralibov

- Snow Storm #6: 07-MAR-18
FINAL Results here
Winning forecast issued by: Donald Rosenfeld

17th Annual 'Season-total'
Deadline for entries has passed
Forecasters' summary here

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

16th Annual 'Season-total'
FINAL results here

Tuesday, December 23, 2008

Snow Storm #3 - Coastal Frontogenesis

Click image to animate.

Note the sharp temperature gradient between PWM and Buoy 44005. The buoy is located 78 NM east of PWM.

Rapid deepening of -2.7 mb / hr at 00z concurrent with strongest horizontal temperature gradient of 0.372°F / NM. Strong temperature gradients initiate ageostrophic circulations across the boundary leading to pressure falls and upward vertical motion.

PWM observed a record 14.5" snowfall from this storm. The old record of 12.4" was set in 1933. Snow totals are often suppressed at PWM b/c of its proximity to the coast; this case...the station remained on the cold side of the coastal front and all precipitation fell as snow.

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