2015-03-06

The snowfall that lasted much of the day did beat expectations on some ends, but came in with a near tie to our big Saturday February 21st event in Baltimore.  This time the report at BWI was 6.2″, which still verified my original and final forecast (both maps at the bottom of this post.  It also set the March 5th record for snowfall, breaking the old mark of 4.0″. This storm made for our second event over 6 inches, and 12th measurable snowfall date. We have had 8 days with 1 inch or more, which is above the average of 5.8 days.



Overall this did verify with my original forecast of 6 inches or more, but refining my final call actually lowered my score. I cut back to 5 inches on the low end to account for a later change over in the morning and fighting the March sun angle and had the high end of 8 inches. That did cover some lower reports and fit the average of 7 inch reports, However, I underestimated the top zone between Frederick and Carroll Counties into southern Pennsylvania where many places reported between 8 to 11 inches. A true over achiever!  Also, my attempt to plot the bulls eye centered around US 50 missed the mark in Anne Arundel County, but worked for Montgomery County.  As for Southern Maryland, the final totals are not complete as of this report, so look for a follow up and comparison.

Below are close up county snow spotter reports from the National Weather Service in the slide show. Compare to my final and first call maps. I give my forecast overall a B, accounting for time of change over and impact as well. The entire list of the Baltimore/Washington region is below.  This forecast office does not include Delmarva or southern PA.





Final Snowcast and First Call Snowcast Maps: Click for larger view

Snow Spotter Reports from NWS

Note: Some of these were NOT at the end of the storm, so not complete. But they match the maps in the slide shows.

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