Winter Storm Webinar Eric Ahasic NWS Twin Cities Tuesday, November - - PowerPoint PPT Presentation

November 26-27 Winter Storm Webinar

Eric Ahasic NWS Twin Cities Tuesday, November 26, 2019 9:00 AM

Current Headlines

Winter Storm Warning expanded to cover most of the remaining watch area Winter Weather Advisory issued for a few counties in west-central Minnesota, where amounts look to be lower In effect beginning this evening and continue through tomorrow morning

Overview

WHAT: Heavy snow, amounts up to 12” possible. Blowing snow developing late Tuesday night. WHERE: Greatest impacts expected from south central through east central Minnesota and western Wisconsin. WHEN: Snow develops in southwest/south central Minnesota after 5pm and spreads northeast into central Minnesota and western Wisconsin through midnight. The snow will gradually end from west to east Wednesday morning. IMPACTS: Holiday travel will be severely impacted.

Snowfall Forecast

Amounts have been increased since yesterday’s briefing Now expecting widespread amounts

• f 8-10” across the warning area. 10-

12” amounts possible from Fairmont, through the metro, into NW WI Lowest confidence in amounts across west-central Minnesota, and the Eau Claire area

Heavy Snow Probability

Peak Wind Gusts

Wind gusts of 40+ MPH are expected across southern Minnesota overnight into Wednesday morning Blowing /drifting snow and near- blizzard conditions are possible across open areas of western and southern Minnesota

Forecast Radar

Forecast Radar

Forecast Radar

Timing

Summary

• Heavy snow begins this evening and becomes heaviest overnight. Snow

tapers off through the morning tomorrow

• Widespread amounts of 8-10” expected, with amounts nearing 10-12”

from south-central MN through the Twin Cities metro and NW WI.

• Wind gusts increasing to 40 mph will lead to areas of blowing/drifting

snow and possible near-blizzard conditions in open areas.

• Holiday travel will be severely impacted beginning this evening.