SEVERE WX : Wind Advisory View Alerts

Thaw and freeze, thaw and freeze

Swings in temperature will create the potential for black ice each evening going forward.

Posted: Jan 25, 2018 9:59 PM

Welcome back to winter!  After a few mild days with rain, mother nature has reminded us that we're still in January.  We did get a chance to enjoy sunshine Thursday afternoon and more is expected on Friday, but there is something to be aware of with the changes in temperature - black ice.

Black ice forms when water freezes on the road.  It gets its name from the color that it looks like on the road (ice is not black).  Air temperatures don't necessarily need to climb above freezing for snow to melt.  On sunny days like Thursday, the road temperature is warmer than the air temperature, sometimes significantly.  This can allow snow to melt on the roads even when the air temperature is below freezing.  

Melting snow/ice during the day becomes a big problem at night when temperatures fall below freezing.  This creates slippery surfaces that can catch people off guard because it can happen during quiet weather days.

The next chance of this happening will be Friday night.  Temperatures will stay generally above freezing on Saturday night and our attention will shift to a significant snow melt (for those that still have it) this weekend.

New York Coronavirus Cases

County data is updated nightly.

Cases: 1636040

Reported Deaths: 47498
CountyCasesDeaths
Queens2096418743
Kings2086299078
Suffolk1616323067
Nassau1474722907
Bronx1429355853
Westchester1070752091
New York1026433888
Erie649631598
Richmond566491574
Monroe52371986
Rockland38416887
Orange36747720
Onondaga32312628
Dutchess22190408
Albany20758331
Oneida19672475
Niagara15240311
Broome14735336
Saratoga11889145
Schenectady10790177
Ulster9981228
Rensselaer8965131
Putnam830786
Chautauqua7288122
Chemung6428130
Oswego598389
Ontario576488
Steuben5496137
St. Lawrence548184
Cayuga535388
Jefferson476463
Sullivan473059
Herkimer4545107
Wayne445164
Genesee4395118
Cattaraugus438776
Madison383385
Clinton355826
Livingston353156
Tompkins344142
Columbia337595
Fulton330783
Montgomery3168106
Cortland314860
Allegany289281
Warren282955
Wyoming280449
Tioga279956
Greene263171
Orleans244481
Chenango242769
Otsego233143
Washington232652
Lewis206030
Franklin205612
Seneca160153
Delaware149833
Essex133626
Schoharie119012
Yates101426
Schuyler86212
Hamilton2822
Unassigned220117
Out of NY0192
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