A low pressure system will bring fog and drizzle to the state tonight. As temperatures drop below freezing, some light icing will be possible. As the week comes to a close, another low pressure system will move from the northwestern United States to the southern Plains, and we will be dealing with a decent chance for rain Thursday night into Friday.
EASTERN OKLAHOMA
WINTER WEATHER ADVISORY in effect (except McCurtain County)
FREEZING RAIN ADVISORY in effect (McCurtain County only)
For McCurtain County in extreme southeastern Oklahoma, expect a 70 percent chance for rain tonight, transitioning to freezing rain overnight as temperatures drop just below freezing to the low-30s. For the rest of the region, temperatures will also be in the low-30s, just below the freezing mark. Drizzle can be expected in the evening, followed by freezing drizzle overnight. In far northeastern Oklahoma, the freezing drizzle may mix with some snow flurries. In McCurtain County, ice accumulations totaling up to a tenth of an inch are possible. For the rest of the region, expect lighter ice accumulations. However, any accumulation of ice poses a threat to travel, so we urge you to take caution in your Thursday morning commute. Ice will form on bridges and overpasses before the rest of the road.
For McCurtain County on Thursday, freezing rain in the morning will transition to rain in the afternoon. A 50 percent chance for precipitation exists. The rest of the eastern Oklahoma region will see freezing drizzle in the early morning, followed by cloudy skies for the rest of the day. Highs will be in the mid-to-upper-30s across northeast Oklahoma and the low-40s across southeast Oklahoma. For Thursday night, as the low pressure system enters the state, a greater chance for rain exists across all of the region. Beginning mainly after midnight, expect a 50 to 70 percent chance for rain, with a few rumbles of thunder possible. Lows will be in the mid-to-upper-30s, so frozen precipitation will not pose a threat. On Friday, a steady rain is expected to continue with highs in the upper-40s to low-50s across northeast Oklahoma and highs in the mid-to-upper-50s across southeast Oklahoma. For Friday evening, periods of rain showers will continue before all precipitation comes to an end by midnight. Lows will be in the low-to-mid-30s across the region. In northeast Oklahoma, lows are forecast to drop below the freezing mark, meaning any water on roadways would freeze. Please watch for black ice.
CENTRAL OKLAHOMA
WINTER WEATHER ADVISORY in effect
Areas of drizzle will continue through the evening. Then, areas of freezing drizzle will occur after midnight and into Thursday morning as temperatures drop down below freezing. Expect lows as cold as the low-to-mid-20s across central and north central Oklahoma, with temperatures only dropping to the low-40s in south central Oklahoma. Through Friday mid-morning, patchy freezing fog will pose a threat and cause a light icing on surfaces. By late morning and afternoon, the fog will lift, though skies will remain generally cloudy for the remainder of the day. Afternoon temperatures will remain chilly in the mid-to-upper-30s.
For Thursday night, the rain begins, mainly after midnight. An 80 percent chance exists. A few rumbles of thunder are possible along with the rain. In north central Oklahoma, Thursday night's temperatures will flirt with the freezing mark, so please take extra caution in your Friday morning commute as rain could become freezing rain. For central and south central Oklahoma, temperatures will remain nearly steady from Thursday through Thursday night, so frozen precipitation will not be a problem. On Friday, an 80 to 100 percent chance for a steady rain exists through noon, becoming an on-and-off rain in the afternoon. Some thunder is still possible. Highs will generally be in the mid-50s. All rain will come to an end by Friday evening, and skies will clear partially Friday night, with lows ranging from the upper-20s up north to the mid-30s down south.
WESTERN OKLAHOMA
A chance for drizzle will occur before midnight, then a chance for freezing drizzle is possible as lows drop down to the low-to-mid-20s. Patchy freezing fog will occur through mid-morning on Thursday, then the fog will lift, and afternoon temperatures will rise to the mid-to-upper-30s in northwest Oklahoma and the low-to-mid-40s in southwest Oklahoma. Skies will remain mostly cloudy for the day on Thursday. For Thursday night after midnight, the rain makes an entrance and will be more prominent in southwest Oklahoma with chances of 80 percent. In northwest Oklahoma, expect a 50 percent chance for rain. Lows will remain above freezing in the mid-to-upper-30s, with temperatures rising to the 40s by very early Friday morning. For Friday, an 80 to 90 percent chance for rain exists in southwest Oklahoma before noon before becoming a lesser chance in the afternoon. In northwest Oklahoma, a 50 percent chance for rain exists before noon. Highs will be in the low-50s in northwest Oklahoma and in the upper-50s in southwest Oklahoma.
PANHANDLE
FREEZING FOG ADVISORY in effect
As you can see, we worked backwards in our region summary today. Patchy freezing fog will pose a threat to the panhandle beginning later this evening and lasting through mid-morning Thursday. This will cause a glazing of ice on surfaces, which could affect travel. Lows will be very cold, dropping down to the mid-teens. After the fog lifts on Thursday, skies will be mostly to partly sunny for the afternoon with highs reaching the low-to-mid-40s.
In contrast to the rest of the state, the approaching low pressure system will not have an affect on the panhandle. The region will remain precipitation-free for the seven-day forecast period. Skies will be partly to mostly cloudy on Thursday night and Friday.
AC
Sources: NWS, Mesonet, Tim Mogill/Google Images (photo)
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