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Updated: 12:15 p.m. EDT Wednesday, March 20, 2013, by Kimberly Hoogewind (khoogewi@purdue.edu)

Forecast valid: midnight on Thursday, March 21, 2013, through midnight on Friday, March 22, 2013. 

Lake-effect snow showers north and below normal temperatures across the state

Day 1 summary (statewide): 

The main focus of the short term period will deal with the potential for lake-effect snow in far northern portions of the state through early morning Thursday, namely northeastern La Porte and northern Fort Wayne districts. Beginning Wednesday night, winds will shift to a more northwesterly flow, which is a more favorable orientation for lake-effect snow in northern Indiana. Concurrently, with very cold air moving in aloft, and mid-lake temperatures still in the upper 30’s/low 40’s, there will be favorable temperature differences between the lake and aloft to produce sufficient instability to produce lake effect snow showers. Aided by an upper level disturbance that will pivot through enhancing lift, lake effect snow showers look to be likely. Time-height cross sections show pretty decent moisture and upward motion in the snow growth zone with fairly high snow-to-liquid ratios, so currently thinking that this could produce some light accumulations of 0.5 inch up to 2 inches in LaPorte and Fort Wayne districts, with the greater amounts occurring further north. Snow showers will likely end by early afternoon on Thursday. F

or the rest of the state, expecting another quiet weather day with below normal temperatures remaining in place.


La Porte district forecast/discussion (day 1):  

Lake effect snow showers are expected overnight into the late morning/early afternoon hours. Accumulations of 1-2 inches are possible, with the higher amounts occurring in the far northeastern portions of the district.

Fort Wayne district forecast/discussion (day 1):

Lake effect snow showers are expected overnight into the late morning/early afternoon hours. Accumulations of 0.5-2 inches are possible, with the higher amounts occurring in the far northern portions of the district.

Crawfordsville district forecast/discussion (day 1): See statewide discussion.


Greenfield district forecast/discussion (day 1): See statewide discussion.


Vincennes district forecast/discussion (day 1): See statewide discussion.


Seymour district forecast/discussion (day 1): See statewide discussion.


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