Round 1 of the winter storm brought ice and some sleet to a great deal of western and central Oklahoma, coating plants, trees, vehicles, and even some concrete surfaces with a thin layer. The next of round of the winter storm, beginning tonight and lasting through Monday night, is slated to bring more sleet and snow as the layer of the atmosphere above the surface will be cold enough to keep the precipitation mostly or entirely frozen all the way from the cloud to the surface. Even still at this time, exact details are not completely certain, but with the recent ice and sub-freezing temperatures, accumulations will be a strong likelihood across western and central Oklahoma when the wintry precipitation falls. We will now detail the forecast for round 2 of the winter storm by region. Please note that a WINTER WEATHER ADVISORY is in effect for central and western Oklahoma from 4 AM Sunday to 6 AM CST Monday.
THE PANHANDLE
A large swath of snow currently in west Texas and the Texas panhandle is slated to move northward into the Oklahoma panhandle overnight, bringing a high chance for a steady snowfall well into the overnight hours. Lows will remain well below freezing in the low-20s. Variable winds will blow generally around 5 mph, but this will still lead to wind chill values between 10 and 15 degrees. For Sunday, the snow will continue and may mix with some sleet and freezing rain or drizzle in the morning hours. After the morning, all wintry precipitation will come to an end, and skies will remain cloudy for the remainder of the day. High temperatures will remain below the freezing mark in the upper-20s to low-30s. Wind chill values will be between 10 and 20 degrees as variable winds blow between 5 and 15 mph. Total ice accumulations from this next round of wintry weather will be minimal to nonexistent. Total snow accumulations will be less than one inch.
Sunday night will see lows drop, again, into the low-20s. Monday, with skies partially clearing, highs will rebound back into the low-to-mid-40s.
NORTHWEST OKLAHOMA
Overnight, snow, mixed with some sleet, is likely. Temperatures will drop into the low-20s, with a northeast wind blowing between 5 and 10 mph, also creating very cold wind chill values. The nighttime snow and sleet accumulation is slated to remain below half an inch. For Sunday, snow will occur during the morning hours, but could linger on into the afternoon and evening. Temperatures will remain below the freezing mark in the low-30s, and the total daytime snow accumulations will be between 1 and 3 inches. A northeast wind will blow between 5 to 10 mph in the morning, shifting to the southeast in the afternoon. For Sunday night, lows will drop down to the low-20s again. For Monday, additional wintry precipitation is not expected, but skies will remain cloudy with highs only topping out in the upper-30s. Skies will finally begin to clear on Tuesday, with highs rebounding to the mid-40s.
SOUTHWEST OKLAHOMA
Southwest Oklahoma is expected to see the most from this system. Overnight, the large swath of snow and mix in the Texas panhandle will move into the region, creating a high chance for snow, which may be mixed with some sleet at times. Lows will drop down to the mid-to-upper-20s. North-northeast winds will blow between 10 and 15 mph, gusting at up to 20 mph. The nighttime snow and sleet accumulation will be less than a half an inch.
For Sunday, snow and sleet will be likely all day long, with temperatures remaining below freezing in the upper-20s. For Sunday night, a high chance of snow remains for the region, and even into Monday, a chance of snow exists before noon, transitioning to rain in the afternoon as the temperature rises above freezing. Sunday nights lows will be in the mid-20s, while Monday's highs will be in the upper-30s. All precipitation should come to an end around Monday night, with skies finally beginning to clear by Tuesday. Total snow and sleet accumulations in southwest Oklahoma will be between 2 and 4 inches, with some higher amounts possible locally.
CENTRAL OKLAHOMA
A slight chance for snow and sleet exists overnight, mainly in central and south central Oklahoma. Lows will be in the mid-to-upper-20s in these areas, while north central Oklahoma sees generally cloudy skies but lows dropping down as cold as the upper-teens. For Sunday, snow and sleet will be likely across the region. For south central Oklahoma, snow will be mixing with sleet throughout the day. For central Oklahoma, a snow and sleet mix in the morning will become all snow in the afternoon. For north central Oklahoma, expect generally snow only, beginning in the afternoon. Daytime highs will be in the low-30s, possible just above the freezing mark in south central Oklahoma but certainly not above freezing for central and north central Oklahoma. A north to northeast wind in the morning will shift to a southeast wind in the afternoon, blowing between 5 and 10 mph. In central and southern Oklahoma, daytime snow and sleet accumulations of 1 to 3 inches are possible. In north central Oklahoma, the new snow accumulation will be less than one inch.
For Sunday night, a snow and sleet mixture is expected to remain for south central Oklahoma. In central and north central Oklahoma, the precipitation type will be all snow. Lows will be in the mid-to-upper-20s. For Monday, in central and north central Oklahoma, a slight chance of snow exists before noon, before becoming a mixture of rain and snow possible in the afternoon. In south central Oklahoma, a wintry mix of precipitation is possible in the morning, becoming all rain in the afternoon as the temperature rises above freezing. Highs on Monday will make it to the mid-to-upper-30s. Monday night sees a slight chance for rain in south central Oklahoma in the early evening but all precipitation mostly coming to an end. Lows will be in the mid-to-upper-20s. Skies will partially clear by Tuesday.
NORTHEAST OKLAHOMA
Northeast Oklahoma is snow expected to see as much from this system as it tracks farther south. However, still expect the possibility for some wintry precipitation and definitely expect frigid temperatures. Overnight, expect generally cloudy skies with temperatures dropping down to the mid-to-upper-teens! A northeast wind will blow around 10 mph but could gust at up to 25 mph. For Sunday, a chance for snow exists in the afternoon, less for extreme northeastern Oklahoma. Highs will be right around the freezing mark, perhaps a degree or two above. Of course, this would greatly impact the wintry precipitation totals. For Sunday night, a low chance for snow exists, with lows in the upper-20s. For Monday, a slight chance of freezing rain or drizzle and snow may occur before noon; otherwise all wintry precipitation will come to an end. Highs will rise to the upper-30s. From this system in northeast Oklahoma, expect wintry precipitation amounts less than a tenth of an inch.
SOUTHEAST OKLAHOMA
Southeast Oklahoma will also get quite a bit out of this system. Skies will remain mostly cloudy overnight with lows dropping to the mid-to-upper-20s. On Sunday, highs will reach the mid-30s. But, a good chance for snow will come in the afternoon. In far southeast Oklahoma, little to no accumulation can be expected. In the rest of the region, a daytime accumulation of less than a half an inch may occur. For Sunday night, expect a chance of snow, possibly mixed with sleet, especially in extreme southeast Oklahoma. Lows will drop down to the mid-to-upper-20s. Sleet and snow accumulation could total around one inch. For Monday, extreme southeast Oklahoma will see highs right at freezing and thus a wintry mix of precipitation to occur all day. For the rest of the region, a snow in the morning will become a cold rain in the afternoon as temperatures rise above freezing to the mid-30s. Monday night into Tuesday sees slight chances for snow, sleet, and freezing drizzle before the precipitation finally comes to an end.
INFOGRAPHICS
Provided by the National Weather Service, Norman, OK
Please visit http://www.srh.noaa.gov/oun/ for the most updated information.
AC
Sources: NWS, Wikipedia (photo)
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