Summary of Rain & Ice

Summary of Heavy Rain and Ice
2009 February 9th - 10th

Rainfall Amounts

Ice Accumulations

List of Ice Reports 
(pdf file, may take up to a min to download)    

A deepening low pressure system slowly made its way northeast across the upper plains on Monday, finally centering over northern Minnesota on Tuesday. The low pressure center finally pushed northeast into the borderland and exited the region into Ontario, Canada by Wednesday morning. 

Locations across Minnesota and Wisconsin experienced a combination of winds gusting in excess of 30 mph, heavy rain, areas of fog, and a February thaw this week. Most areas reached their warmest temperatures, in the upper 30s to low 40s late Monday night, then held steady through Tuesday night. The warm air took longer to work its way into the far northeast sections of Minnesota and along the North Shore of Lake Superior where temperatures hovered around 30 F degrees through the day Monday, before finally warming above freezing in the evening and overnight hours. As a result of the persistent shallow layer of sub-freezing air and ground temperatures, locations from the Duluth-Superior area to Silver Bay, Finland, and Grand Marais saw freezing rain and a widespread glaze of ice Monday. Most areas received around a tenth of ice, with higher amounts of around two tenths along the North Shore of Lake Superior. Luckily, most of the roadways were pre-treated over the weekend and this allowed for streets to remain mostly ice-free with the exception of dirt roads and un-treated driveways and parking lots. The ice that did accumulate on the trees and power lines melted after a short time as temperatures continued to rise through Monday night. 

Impressive February rainfall amounts were also recorded with new daily rainfall records set at both International Fall and Duluth. Most areas in northeast Minnesota received a third to a half inch of rain while higher amounts approaching one inch were measured at locations in the higher terrain of the North Shore of Lake Superior.
 

 

More Weather Details

Station Plot

Radar

SFC Maps

Upper Air

Satellite

 Soundings

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10Z Feb 9

14Z Feb 9

00Z Feb 9

00Z Feb 9

13Z Feb 9

 00Z Feb 9

12Z Feb 9

15Z Feb 9

06Z Feb 9

850 mb

15Z Feb 9

INL

14Z Feb 9

16Z Feb 9

12Z Feb 9

700 mb

17Z Feb 9

MPX

16Z Feb 9

17Z Feb 9

15Z Feb 9

500 mb

19Z Feb 9

ABR

18Z Feb 9

18Z Feb 9

18Z Feb 9

300 mb

21Z Feb 9

OAX

20Z Feb 9

19Z Feb 9

21Z Feb 9

12Z Feb 9

23Z Feb 9

BIS

22Z Feb 9

21Z Feb 9

00Z Feb 10

850 mb

 01Z Feb 10

12Z Feb 9

00Z Feb 10

23Z Feb 9

03Z Feb 10

700 mb

14Z Feb 10

INL

 02Z Feb 10

01Z Feb 10

06Z Feb 10

500 mb

17Z Feb 10

BIS

04Z Feb 10

15Z Feb 10

09Z Feb 10

300 mb

19Z Feb 10 

MPX

 06Z Feb 10

17Z Feb 10 

12Z Feb 10

 00Z Feb 10

 

ABR

 08Z Feb 10

19Z Feb 10

15Z Feb 10

 850 mb

 

OAX

 10Z Feb 10

21Z Feb 10

18Z Feb 10

 700 mb

 

DVN

12Z Feb 10

 

 

 500 mb

 

12Z Feb 10 

14Z Feb 10

 

 

 300 mb

 

INL

16Z Feb 10

 

 

 12Z Feb 10

 

BIS

18Z Feb 10

 

 

850 mb 

 

MPX

20Z Feb 10

 

 

700 mb 

 

ABR 

22Z Feb 10

 

 

500 mb 

 

DVN

 

 

 

 300 mb

 

 

  



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