On January 8, 2022, a winter weather advisory was issued for my local area. Significant ice accumulation was predicted.
…WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO2 PM EST SUNDAY…
- WHAT…A brief period of mixed precipitation, changing to
freezing rain. Total snow and sleet accumulation of less than
one inch and ice accumulations of up to one tenth of an inch.
- WHERE…Portions of central Pennsylvania.
- WHEN…From 2 AM to 2 PM EST Sunday.
I obtained a 3/4″ dowel, and cut it to the prescribed 20″ length. Before installing the dowel outside, I measured the diameter with digital calibers (0.74″). That was the baseline measurement.
I then secured the dowel to the railing of my deck with 1/2″ clamps.
The ice storm developed in the early morning hours of January 9, 2022. An ice storm warning was issued.
…ICE STORM WARNING IN EFFECT UNTIL 2 PM EST THIS AFTERNOON…
* WHAT…SIGNIFICANT ICING. ICE ACCUMULATIONS OF ONE QUARTER TO ONE-HALF INCH.
* WHERE…NORTHERN CLINTON, NORTHERN CENTRE, SOUTHERN CENTRE, MIFFLIN AND SOUTHERN CLINTON COUNTIES.
* WHEN…UNTIL 2 PM EST THIS AFTERNOON.
* IMPACTS…EXTREMELY DANGEROUS TRAVEL CONDITIONS. UNTREATED SURFACES WILL BE VERY SLIPPERY. ISOLATED POWER OUTAGES ARE POSSIBLE.
At 8 AM EST, ice had already accumulated on objects.
I did my first measurement:
By the following calculation, (0.95 – 0.74) / 2, the ice accumulation was measured at 0.11″.
At 10:20 AM EST the ice had accumulated to 0.14 inches.
The ice storm ended soon afterward, and that was the extent of the ice accumulation.