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NWS Wilmington Ohio Is
Changing Some Winter Storm Product Criteria - Effective November 15, 2009
During the past year, the NWS Wilmington Ohio weather
forecast office has been reevaluating our winter storm watch and
warning criteria for heavy snow. As a part of this evaluation, we examined a
climatology of local snow events producing various accumulations. Our
results indicated that in many areas near and north of I-70, the 4-inch
snowfall criteria over a 12 hour period for winter storm watches and
warnings is too low.
Based on the results of our research and after coordination, we will be
raising the 12-hour winter storm watch and warning snowfall criteria for the
2009-2010 winter season to 6 inches for the following counties:
Indiana:
Fayette
Union
Wayne |
Ohio:
Auglaize
Champaign
Clark
Darke
Delaware
Greene
Franklin
Hardin
Licking
Logan
Madison
Mercer
Miami
Montgomery
Preble
Shelby
Union |
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This change will also result in an increase of the 24 hour winter storm
watch and warning snowfall criteria from 6 inches to 8 inches, and an
increase in the winter weather advisory snowfall criteria from 2 inches to
4 inches. The change will be effective Sunday, November 15th 2009.
Contact for more details or to provide comments:
Mary Jo Parker
Warning Coordination Meteorologist
National Weather Service
Weather Forecast Office - Wilmington, OH
937-383-0031
mary.parker@noaa.gov
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www.nws.noaa.gov 
