Dense Freezing Fog, Frost, Black Ice &..............."Diamond Dust"

"Dirty High" is trapping low-level moisture.

Posted: Dec 10, 2018 9:46 PM
Updated: Dec 10, 2018 10:21 PM

The storm the Southeast just experienced would be historic in January-February, let alone early December!  Impressive!  Up to 34" of snow has been reported in the higher terrain of North Carolina with near 20" even into the Piedmont of North Carolina. 

It is safe to say that this one of, if not the biggest snowstorm in parts of the Southeast since the biggest one of them all in early December 1886.  That was the biggest December snow on record for the Southeast.

_____________________________________________________________________________________________________

Areas of dense freezing fog will continue to develop over the viewing area.  Frosty conditions with tree branches covered in glittery rime frost & a heavy frost on all objects will continue to develop, as well.  Black ice will form on roadways, so be careful tonight-tomorrow morning for icy roadways. 

Dense Fog Advisory is up for Benton, Newton & Jasper counties until early morning.

"Diamond dust" is also occurring in the area.  It looks like falling glitter. 

"Dirty High" is trapping all the low level moisture near the surface.  This time of year, the sun angle is low & it is hard to mix out inversions or lids like this.  We are also in a low-solar period, which tends to increase these scenarios.  You find this more in January than early December. 

This "diamond dust" is actually ice crystals that are forming on particulates trapped by the high pressure.  So, dust, smoke & other particulates have crystals growing on them in this 100% humidity.  This diamond dust can put a thin veneer or dusting of "snow" or ice on roadways to only increase the incidence of slick areas.

Lows tonight will remain steady in the teens to lower 20s.

Fog should erode away by 11 a.m., but it may take until noon to early afternoon to really break up the low clouds.

Thus, I cut the high tomorrow from 39 to 37.

West Lafayette
Partly Cloudy
52° wxIcon
Hi: 65° Lo: 53°
Feels Like: 52°
Kokomo
Cloudy
52° wxIcon
Hi: 61° Lo: 51°
Feels Like: 52°
Rensselaer
Partly Cloudy
50° wxIcon
Hi: 63° Lo: 51°
Feels Like: 50°
Fowler
Partly Cloudy
52° wxIcon
Hi: 65° Lo: 50°
Feels Like: 52°
Williamsport
Clear
49° wxIcon
Hi: 66° Lo: 50°
Feels Like: 45°
Crawfordsville
Partly Cloudy
52° wxIcon
Hi: 65° Lo: 50°
Feels Like: 52°
Frankfort
Partly Cloudy
52° wxIcon
Hi: 63° Lo: 50°
Feels Like: 52°
Delphi
Partly Cloudy
52° wxIcon
Hi: 64° Lo: 53°
Feels Like: 52°
Monticello
Mostly Cloudy
52° wxIcon
Hi: 63° Lo: 55°
Feels Like: 52°
Logansport
Partly Cloudy
52° wxIcon
Hi: 61° Lo: 52°
Feels Like: 52°
It's a chilly start but peaks of sunshine will be likely today
WLFI Temps
WLFI Planner

Indiana Coronavirus Cases

Data is updated nightly.

Cases: 941120

Reported Deaths: 15315
CountyCasesDeaths
Marion1282511983
Lake633041097
Allen53609758
Hamilton43827447
St. Joseph41906590
Elkhart33545490
Vanderburgh30383448
Tippecanoe26820249
Johnson23609417
Hendricks22250341
Porter21737346
Clark17409229
Madison17366384
Vigo16108281
Monroe14466191
LaPorte14311239
Delaware14070221
Howard13865272
Kosciusko11418135
Hancock10841165
Warrick10674177
Bartholomew10542168
Floyd10430205
Wayne9959226
Grant9130204
Morgan8865160
Boone8389111
Dubois7710123
Dearborn762289
Henry7608130
Noble7413101
Marshall7362128
Cass7176117
Lawrence6957153
Shelby6584111
Jackson656785
Gibson6156107
Harrison603786
Huntington600195
Montgomery5805105
DeKalb574291
Knox5494104
Miami542488
Putnam536768
Clinton533665
Whitley524953
Steuben497268
Wabash483592
Jasper479160
Jefferson470092
Ripley454277
Adams444068
Daviess4169108
Scott405865
White391857
Clay390857
Greene388392
Decatur385296
Wells384983
Fayette374278
Posey359941
Jennings353156
Washington332047
LaGrange321375
Spencer317835
Fountain316555
Randolph312888
Sullivan307449
Owen283863
Starke280064
Fulton277553
Orange275859
Jay254837
Perry251652
Carroll243729
Franklin239338
Rush234130
Vermillion233250
Parke219820
Tipton209655
Pike207639
Blackford168334
Pulaski163551
Crawford146018
Newton144345
Benton142516
Brown135346
Martin128217
Switzerland125810
Warren114616
Union96911
Ohio79711
Unassigned0479

COVID-19 Important links and resources

As the spread of COVID-19, or as it's more commonly known as the coronavirus continues, this page will serve as your one-stop for the resources you need to stay informed and to keep you and your family safe. CLICK HERE

Closings related to the prevention of the COVID-19 can be found on our Closings page.

Community Events